Archive for the ‘ News ’ Category

How Activated Carbon Can Lead Us To A Better Future?

Friday, August 3rd, 2018

activated carbon filter - Gopani Product Systems - Filtration Specialist - Mfg Of Filter Cartridges And Filter Systems

The world has always been changing but in this decade we are witnessing the change at an unprecedented rate. It is so apparent that from henceforth every year we’ll be surrounded by newer technologies and services. While this constant evolution has a strong positive impact on our lives, it also increases the consumption of resources. Add to it that the population is also growing consistently, if not rapidly. Whatever products we use need to manufactured in factories which utilize resources like water, fuel, and various types of chemicals. The problem is we don’t have an endless supply of natural resources, and wastage of artificial resources like chemicals lead to pollution and increased costs.

Importance of Recycling and Purification

The old-world approach was to utilize the resources like water, chemicals, and gases in manufacturing and then let them into the atmosphere. With this, we not only pollute the environment, but we also add a negative load on the balance sheets. Even worse we actually end up becoming agents in creating the scarcity of the resources in future. The future with the polluted environment and scarce resources would neither be good for mankind nor for businesses. So, if we want to continue to enjoy the comforts and luxuries offered by the modern technologies, we should look at minimizing the consumption of resources and reducing their adverse impact. In fact, we are already seeing the rise of products and technologies that minimize the wastage and mitigate the impact of effluents on the environment. Industries are taking steps to purify the smoke, gases, and liquid effluents before releasing them. They are also constantly on the look out for solutions to recover the used resources like water and chemicals.

Adsorption by Activated Carbon for Recycling and Purification

By definition, adsorption is a simple process in which atoms, ions, or molecules from a fluid adhere to a solid surface which leads to their removal from the fluid. The study of wrecks of Phoenician trading ships from around 450 BC suggests that onboard they used to have charred barrels for storage of drinking water. Why such barrels? Because the carbon of these barrels would attract the impurities to its surface and hence the crew would get purified water. It has also been found that Egyptians used to utilize charcoal to remove unpleasant odours and cure intestinal ailments.

The primary reason for the utilization of activated carbon in adsorption is its microporosity due to which it has a huge surface area, about 500 to 1500 square meters per gram. Owing to its huge surface area and non-hazardous nature, it is widely used as an adsorber. The best part is, after the adsorption process is over, activated carbon can be made to undergo desorption to remove or recover the adsorbed molecules from its surface. Additionally, activated carbon needs a very minuscule amount of contact time (<1 sec) to perform its job. In contrast to the general separation process, activated carbon is very effective in the removal of impurities or molecules which have a very low weight per volume in the fluid.

Today with the advancement of science and technology, we can utilize the carbon in its activated form. In the activation process, carbon is made to undergo several processes to enhance its adsorption capability. By utilizing activated carbon with modern filtration and purification equipments, several complex issues are being solved. Following are the areas in which adsorption by activated carbon is being utilized and has a proven track record:

1. Water Treatment
2. Wastewater Treatment
3. Chemical Purification
4. Treatment of Industrial Smoke and Gases
5. Vapour Recovery
6. Catalyst Recovery
7. Food and Beverage
8. Pharmaceuticals
9. Automotive Emission Control
10. Natural gas and Biogas Purification
11. Air Purification

How to Select the Right Type of Activated Carbon

As per size and shape, there are three types of activated carbon available in the industry. They are: powdered, granular, and extruded (pellets). But each one of them is available in numerous grades which can be differentiated on the basis of the raw material utilized, and the process used for activation. The porosity of the activated carbon varies depending on the raw material used. So, the right selection can only be done by studying the nature of fluid to be treated and understanding the objective to be accomplished. So, the success of any adsorption project hinges completely on the selection of the right type of activated carbon, the one that is not only impeccable in terms of quality but is also the exact right match for your needs.

How Can Gopani Help You in Recycling and Purification?

Whether you want to purify the air, water, chemicals, or any other fluid or you want to recover the spent resources, we can design and build highly effective adsorption systems for you. We have teamed up with Norit to build world-class adsorption systems. Norit is the most dependable on the planet for activated carbon, nobody knows activated carbon better than them. Gopani has an immense amount of experience in designing and executing filtration projects across a wide spectrum of industries. Together with Norit, our Gopani Team is extremely well poised to solve the problems faced by the industries. At Gopani, our focus is on making this earth a cleaner, a healthier, and a more livable space; and the product portfolios that we are right now working with or expanding into are all aimed at making earth a better planet.

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The Ideal Filtration Process for Catalyst Recovery

Wednesday, June 20th, 2018
Filtration Process - Gopani Product Systems - Filtration Specialist - Mfg Of Filter Cartridges And Filter Systems

While catalysts are vital to various processes, it is equally critical to recover them. When you recover them, the cost of production reduces, which has a cascading effect on your entire pricing and profitability. When you recover catalysts, you also purify the process fluid. Spillage while transporting the catalyst-laden fluid can be hazardous, so the best solution is to treat them within the premises. And if you utilize heterogeneous catalysts, filtration is the way to recover your catalysts.

What is expected of a filtration system for catalyst recovery?

  1. They should be highly efficient. Precise filtration would lead to the higher recovery of catalysts and a more reliable purification of the fluids.
  2. In-situ cleaning should be possible. The changeover of elements or disassembling for cleaning leads to longer downtime and consumption of manhours.
  3. The temperature of the fluids can be high or the chemistry might be harmful to humans. So the systems should be designed in such a way that the operator has least or no exposure to the process fluids.
  4. The filter elements should be highly resistant to high temperatures and extremely reactive fluids. They should also possess excellent mechanical strength to withstand variations in pressure.
  5. The leakages and spillages can be harmful and costly, so the system has to be leak proof.

The Most Efficient Filters for Catalyst Filtration

A host of solutions can be offered for catalyst filtration, but we highly recommend using sintered porous metal tubes for catalyst recovery. These tubes, housed in filter housings, offer precise filtration which results in higher recovery. You can either opt for automatic backwash system, or you can have the provision of in-situ cleaning. The assembly operates for a long duration before it needs any maintenance; hence the downtime and the consumption of man hours is very low. There are absolutely zero chances of any kind of leakage or spillage. So, these systems are: precise, safe, cost-effective, and easy to maintain.

Characteristics of Our Porous Sintered Filter Elements

filter cartridges bag filter system  - Gopani Product Systems

While the systems are designed and produced in our manufacturing facility in India, the sintered porous elements are sourced from Mott Corporation which has set a benchmark in the filtration industry with its quality of sintered porous filter elements. Here are their characteristics:

  1. Produced from an array of high-quality metals and alloys.
  2. Very high filtration efficiency.
  3. Resistant to high temperatures.
  4. Based on their material of construction, many elements are compatible with harsh fluids.
  5. Easily cleanable with in-situ cleaning.
  6. Available in both open-end and closed-end configurations.

Why Should You Choose Us?

We at Gopani have been designing and producing filtration systems since 1993. Today we are amongst the most dependable filtration solution providers. For producing gas filtration and catalyst recovery systems, we have partnered with Mott Corporation (Connecticut, USA), they are a name to be reckoned with when it comes to porous sintered elements. So, we utilize their elements and our expertise in designing and producing filtration systems to offer you the most suitable solution. Our team closely works with you to understand your process parameters so as to design the most efficient system for you.

Note: To talk to us about our solutions and services for vapour recovery, you can either write to us at or you can fill up the inquiry form by clicking here.

An Introduction of Gopani

Our journey started in 1993 with a clear objective of helping solve a range of challenges faced by the industries through our knowledge of filtration. We have produced filtration systems for numerous different applications spread across diverse industries. Even as you read this, there are solutions being designed and produced by our team of experts. Our systems and products can be found operational at various locations across the globe.

When you utilize our expertise, you also get the advantage of our pool of filtration experts and our state-of-the-art manufacturing facilities. Every product of Gopani is meticulously produced to deliver exceptional performance. Today we cater to a big and diverse clientele which comprises of customers like you who do not prefer anything less than the best. Their belief in us and our unrelenting urge for innovation has made us one of the most bankable filtration solution providers.

How to Effectively Recover Vapours in Oil and Gas and Chemical Industries?

Wednesday, June 20th, 2018

Oil and gas and chemical industries have to tackle several challenges related to the environment and safety of the workforce. One of the topmost challenges in oil and gas industry is hydrocarbon vapour emission. A similar challenge in the chemical industry is solvent vapour emission. These vapours of hydrocarbons and solvents can badly affect the atmosphere leading to several non-reversal damages. While it is dangerous for all the living beings, the immediate victims are the workforces on the sites. These vapours, if enter into their bodies, can create respiratory and haematological disorders, and as per studies, these vapours are also carcinogenic in nature.

Financial Losses Due to Vapour Emission

Whether it is hydrocarbon vapours of oil and gas sites or solvent vapours of chemical industries, we can’t just let them dissipate to the atmosphere. Because there are costs associated with them. Losing them would have a negative effect on the balance sheets. So, it is essential to recover the vapours in order to save the environment and contain the associated financial losses.

How To Recover the Vapour?

There are various ways to do this, but the most effective way is to employ an activated carbon-based system. Activated Carbon, due to its unique construction, has an exceptional ability of adsorption. Produced from carbonaceous materials, activated carbon undergoes several chemical and thermal processes due to which it has a huge surface area for interaction and can also be offered with varied pore size distributions. So, it has impressive abilities to adsorb a wide range of molecules. The best part is: just like adsorption, it can also undergo desorption. Hence, you can reverse the process, i.e. you can squeeze the adsorbed compounds out of it and send them back to the process or storage. When you do that you also regenerate the activated carbon which means it gets ready for the next cycle of adsorption.

How Should be the Design of a Vapour Recovery System?

An ideal activated-carbon-based recovery system should be dual-bed. So, while one is running the adsorption cycle, the other can undergo regeneration. This would keep the process continuous. These systems utilize extruded pellets of activated carbon because they have very good mechanical properties.

What Can Gopani Offer?

Innovation is always at the forefront for us. When we create innovative solutions, we focus on two things: challenges faced by you and the preservation of ecology. So, along with being a dependable solution provider, we also want to be an environmentally conscious company. Building world-class ‘Vapour Recovery Systems’ serves both the purposes. The more effective a system is higher are your savings and safer is the atmosphere around us.

Note: To talk to us about our solutions and services for vapour recovery, you can either write to us at or you can fill up the inquiry form by clicking here.

An Introduction of Gopani

Our journey started in 1993 with a clear objective of helping solve a range of challenges faced by the industries through our knowledge of filtration. We have produced filtration systems for numerous different applications spread across diverse industries. Even as you read this, there are solutions being designed and produced by our team of experts. Our systems and products can be found operational at various locations across the globe.

When you utilize our expertise, you also get the advantage of our pool of filtration experts and our state-of-the-art manufacturing facilities. Every product of Gopani is meticulously produced to deliver exceptional performance. Today we cater to a big and diverse clientele which comprises of customers like you who do not prefer anything less than the best. Their belief in us and our unrelenting urge for innovation has made us one of the most bankable filtration solution providers.

UPVC Filter Housings – A Sureshot Solution For Filtering Corrosive Liquids

Wednesday, June 20th, 2018

We have been solving the industrial filtration challenges since 1993. Innovation has always been our core competence. So, we figured out early on that in various applications, you need a non-conventional material. This made us introduce UPVC filter housings in India. The best thing about these housings is their non-corrosive nature. They have exceptional resistance to corrosive fluids like sea-water, brine, electroplating solutions, and numerous chemicals. Today there are numerous installations in India where our UPVC filter housings are relentlessly tackling the fluids.

Features and Benefits of our UPVC Filter Housings (Polyfilt):

High Quality Raw Material: Our Polyfilt brand UPVC Filter Housings are produced from premium quality unplasticized polyvinyl chloride (UPVC).

Corrosion Resistance: This is the salient feature of our UPVC housings, resistance to corrosion is their ingrained quality.

Chemical Compatibility: UPVC as a material is compatible with a wide range of chemicals. So, our housings can be utilized in diverse applications.

Ease of Use: Polyfilt UPVC housings are easy to install. Also the cartridge changeout is very easy.

Designed for Precision: The unique locator and closure design avoids internal bypass.

You can read more about our UPVC filter housings here:

About Gopani:

Our journey started in 1993 with an intention to help solve various challenges in filtration. A humble beginning then, but the deep understanding of the issues brought us to where we are today.

Besides experience of more than two decades, our expertise is also bolstered by the state-of-the-art manufacturing facilities, a pool of filtration experts, and the urge to constantly innovate. Every product of Gopani is carefully produced to deliver exceptional quality. Right from the materials used, to detailed quality checks, to thoughtful improvements, quality is at the core of everything we do.

We manufacture, import, and market an extensive range of filters and filtration systems. Customers see us as one of the most bankable solution providers in the filtration industry. Our clientele comprises of customers like you who do not prefer anything less than the best.

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How a Small Change in Pretreatment Solved a Significant Issue in an Effluent Treatment Plant

Wednesday, June 20th, 2018

One of our clients approached us seeking help to resolve a challenge they were posed with. They own a huge reverse-osmosis-based effluent treatment plant. Supplied by an international EPC contracting company, this plant deals with large volumes of effluent on a daily basis. The smooth operation of this plant is so crucial that even a minor glitch can lead to huge losses.

The Problem

Their manufacturing capacity had increased, so more effluent was being generated. What they noticed was that as the load of the effluent increased, the pretreatment section faced certain upsets and filters started getting clogged in 8-10 hours. This would mean increased spending on consumables and higher downtime. Client was in huge distress and sought our help in resolving the issue.

The Solution

Gopani team was deployed to understand what exactly was the problem. Gopani’s team of experts can analyze the nature of effluent coming in from various points. They can also analyze what’s wrong with the pretreatment, what are the dosing chemicals, and how is the overall chemistry. They can identify the real cause or a set of causes that lead to the rapid clogging of the filters. Once we found out the exact causes behind the issue, we wrote our recommendations for the pretreatment section.

We also found that they were using some low-cost melt blown cartridge filters which was a prominent reason for early choking. The foremost recommendation we gave was to switch to our high efficiency melt blown cartridge filter: RO Protect Extreme. The biggest impact of this change of filters was that the operating life of cartridge filters shot up to one week from a meagre 8-10 hours. Even though RO Protect Extreme is made available at a slightly higher price than the low-cost melt blown, which they were using earlier, the overall cost has come down due to reduced changeouts. Lesser downtime also translates into increased productivity and a substantial saving of man-hours. The earlier filters could withstand differential pressure of about 0.8 to 1 bar, after which they needed to be replaced, whereas our RO Protect Extreme can operate until 2.4 bar.

RO Protect Extreme

We offer a wide range of melt blown cartridge filters, and RO Protect Extreme is one of our high efficiency melt blown filters. These cartridge filters are pretty unique in the sense that not only do they offer high efficiency, but they also possess excellent dirt holding and differential pressure withstanding capabilities. They have a slightly rough outer surface which would avoid formation of a slimy layer that would prematurely choke the cartridge filter. All put together, these are robust cartridge filters that would go a long way in meeting the challenges that had cropped up.

Note: Gopani has a wide range of cartridge filters to recommend and we also develop customized cartridge filters to meet with the unique challenges. This knowledge comes from the fact that Gopani has immense experience in the filtration industry. We are also powered by a pool of highly talented technical experts and the state-of-the-art manufacturing facility.

FRP Filter Housings Available Off-The-Shelf

Wednesday, June 20th, 2018

At Gopani, we are constantly trying to foresee the upcoming challenges in the filtration industry, and based on our analysis we keep coming up with newer solutions. This is an intrinsic part of our day-to-day activities. The latest idea we have been working on is producing standardized FRP (Fibreglass Reinforced Polymer) Filter Housings and making them available off-the-shelf. The news is that we are prepared to launch this product in the month of June this year. Very soon after the launch, we’ll be well-stocked to ship them swiftly.

Why FRP (Fibreglass Reinforced Polymer) Housings?

As the conventional sources of water are depleting fast, there will be an increased dependence on sea water for general human requirements. We have been receiving inquiries for filter housings for sea water desalination since a few decades. More often than not, we were being asked to offer stainless steel duplex or stainless steel super duplex. Sometimes it was FRP filter housings. When it comes to dealing with sea water, stainless steel housings offer a big challenge: they are likely to get corroded. Even a rubber lining isn’t a foolproof solution because the abrasive effect of sea water can create a pin hole which can then get corroded and propagate the corrosion. Besides FRP housings aren’t only non-corrosive, but are light-weight and cost-effective.

Benefits of FRP Housings:

  1. Corrosion resistance is the inherent characteristic of FRP material.
  2. They are robust; they exhibit very good impact and abrasion resistance.
  3. They are much lighter than their stainless steel counterparts.
  4. Since they are lighter in weight, they are easy to transport and install.
  5. When compared with stainless steel housings, FRP housings turn out to be an economical solution.

How We Have Designed our FRP Filter Housings?

We have been asked several times in the past by many of our prestigious clients to offer them off-the-shelf FRP Filter Housings for their sea water desalination projects. After due consideration, we sat down on the drawing board and started conceiving the most optimum designs for our filter housings. Our objective was to create a product that is easy to install and use, robust in construction, and which offers a very long operational life. Concisely speaking, what we want to offer is a high quality product which offers the optimal value for investment.

Salient Features of Our FRP Filter Housings:

  1. Designed as per ASME section 10.
  2. Robust and light-weight.
  3. Designed for 100 cubic meters/hour flow, for higher flows a bank of filter housings can be installed.
  4. Closure bolts are made up of stainless steel super duplex.
  5. Will be made available ex-stock, so there will be no waiting time.

Final Note: We have made all the necessary preparations for the launch. So, from June 2018, we’ll be carrying these housings in our inventory and would be able to serve you promptly for your requirements.

Activated Carbon for Wastewater Treatment

Wednesday, June 20th, 2018

Note: Gopani is an authorized distributor of Cabot (Norit) for their Activated Carbon. While Cabot (Norit) is the world-leader in Activated Carbon, Gopani is one of the largest filtration solution providers in India. So, with the combined expertise we can help you design the most effective system for your challenges.

(If you want to quickly read about the topic, you can check this presentation, else you can scroll down and read the entire article.)

Industrial Wastewater Treatment

Industrial Wastewater Treatment Plants are meant for turning wastewater into an effluent which can be released back to the environment. They remove or reduce the chemical and biological pollutants from the wastewater so as to make the fluid safe for discharge. These plants have to deal with a wide array of organic and inorganic chemical compounds. Of all the processes, it has been found, adsorption by activated carbon tackles the broadest range of contaminants. Activated carbon helps in the process by adsorbing hydrophobic and high molecular weight compounds which industrial wastewaters are riddled with. This leads to a huge reduction in COD (Chemical Oxygen Demand).

Municipal Wastewater Treatment

Municipal Wastewater Treatment Plants have to tackle the sewage generated in the living and commercial spaces. Activated Carbon is used in sewage treatment when the secondary effluent possesses non-biodegradable compounds. These compounds can prove to be lethal for the aquatic life. In such situations GAC (Granular Activated Carbon) is used as a polishing step.

In some installations, they have replaced traditional activated sludge process with PACT (Powdered Activated Carbon Treatment). In this treatment powdered activated carbon is added to aerobic or anaerobic system which results in easier sludge removal.

Activated Carbon For Wastewater Treatment

Our Cabot (Norit) Activated Carbon can be used in both Industrial and Municipal Wastewater Applications. We offer a set of different grades as per the requirements of the process and the quality of the fluid to be treated. With our products you can expect:

  1. Excellent adsorption
  2. High mechanical strength for thermal reactivation
  3. Low pressure drop
  4. A range of particle sizes to meet various backwashing requirements

Granular Activated Carbon (GAC) for Wastewater Treatment

When treating the wastewater with this type, the liquid is made to percolate through a bed of granular activated carbon. Generally the filters (also called contactors) made for using this type of activated carbon are fixed-bed with downflow column – either a steel column or a steel or concrete rectangular tank. Contaminants are adsorbed as the liquid feeded from the top gravitates. Lately new style contactors have come up: expanded bed and moving bed. Regenerability is one of the most significant features of granular activated carbon. The handling is simple and operational costs are lower with this type.

Powdered Activated Carbon (PAC) for Wastewater Treatment

Powdered Activated Carbon is dosed into the stream or in the holding basin either as a dry powder or as an aqueous solution. After the completion of the process, it has to be removed from the effluent. The existing tanks can be utilized for this treatment. Unlike the granular type, the powdered activated carbon cannot be regenerated and has to be disposed to a landfill or an incinerator.


Wound Filters Specifically Designed For Condensate Filtration

Wednesday, June 20th, 2018

We have entered into an era where saving the resources, protecting the environment, and making the processes cost-effective is more important than ever. Hence, today’s power stations have to be super-optimized for cost and efficiency. They should occupy as less space as possible, check the emissions, reduce the consumption of fuel and water, and cut-down the discharge of wastewater. Add to all of these, they have to thrive in the extremely competitive environment. In this scenario the equipments that help optimize the processes are a necessity.

The Importance of Condensate Polishing Units

To reduce the discharge and consumption of water, it is becoming a norm to reuse the steam condensate. Condensate Polishing Units are meant for purification of steam condensate before it re-enters the turbines or boilers. Condensate is often found to contain both suspended and dissolved impurities. Chloride, sodium, silica, etc. are the types of commonly found dissolved impurities. Suspended impurities include iron, copper, nickel, etc. Using such contaminated water for feed can lead to scaling, corrosion, and reduced efficiency of the equipments. Hence condensate polishers are employed to ensure that the water entering the turbines or boilers is devoid of contaminants.

Why to Use Filtration Systems Prior to Condensate Polishing Units?

Condensate polishing units rely on ion exchange technology. Hence their operation is similar to that of water softeners. They comprise of the beds of polymer resins that remove the ionic impurities through exchange of ions. So, their construction is ideal for dealing with dissolved impurities. But the condensate also carries suspended impurities which get trapped within the resin beds thereby increasing the differential pressure. The differential pressure when exceeds the permissible level, the resin needs to be regenerated. Hence, higher the load of suspended solids, more the frequency of regenerations. More regenerations would mean increase in consumption of chemicals and discharge of wastewater. The solution to avoid this scenario is to utilize a filtration system for removal of suspended solids.

Gopani Clarywound CPU Filter

Clarywound CPU is a brand of cartridge filter produced especially for filtration systems of condensate polishing units. It is a string-wound filter that offers true depth filtration, high flow capacity, less pressure drop, and extremely low media migration. Clarywound CPU comes with a stainless steel core which makes it capable of withstanding higher differential pressure, and higher collapse pressure. Gopani has a a state-of-the-art manufacturing facility and a modern, and well-equipped testing facility for wound type cartridge filters.

Advantages of Using Clarywound CPU Filter

  1. All our filters, including Clarywound CPU, are produced from the purest raw material sourced from the world-renowned manufacturers.
  2. Clarywound range of filters are built using continuous winding process. The hundreds of diamond shaped tunnels created due to winding pattern get progressively smaller from outer surface to the core. Hence, they offer true depth filtration.
  3. Their higher dirt holding capacity translates into less changeovers which means less downtimes and reduction in overall costs.
  4. The presence of stainless steel core makes them resistant to higher differential pressure thereby increasing their collapse pressure.
  5. The availability of lengths upto 70 inches means lower space requirement.

Specifications of Gopani Clarywound Filters

  1. Filter Media: Wound Polypropylene on a Steel Core
  2. Length: 60 inch to 70 inch
  3. Filtration Rating: 1, 5, and 10 microns (nominal)
  4. Max. Forward Differential Pressure: 3.0 bar @ 65 degrees C
  5. Temperature Rating: Max. 82 degrees C


Source: Gopani Product Systems




Highly Efficient Pleated Filters for Condensate Polishing Units

Friday, June 22nd, 2018

The biggest challenges modern day power plants have to face are: depleting natural resources, fluctuating demand, reducing land space, and strict emission norms. In numerous facilities today there is an emphasis on clean water chemistry. When we picture this scenario, we deduce that making the processes efficient will be the key. Hence the demand of the ancillary equipments that enhance the efficiency will be on an upward spiral.

Condensate Polishing Units

There are various areas in power plants where optimizations can help save resources, reduce the costs, and increase the equipment life. One such place is where the condensate re-enters the system. In most of the large scale plants, condensate is re-utilized to reduce the need of the make-up water. But it is often found to be contaminated by dissolved and suspended impurities which can scale or corrode the turbines and boilers. The answer to this issue is: Condensate Polishing Units.

The Limitation of Condensate Polishing Units

Condensate Polishing Units, also called Condensate Polishers, are in essence the tanks filled with beds of ion exchange resins. These resins, through ion exchange reactions, remove the dissolved impurities like chloride, sodium, silica, etc. The condensate, along with the dissolved impurities, also comprises of suspended impurities. These suspended impurities are collectively referred to as ‘crud’. The crud when traverses through the vessels of condensate polishers, it gets trapped within the beds of resins. So, while it gets removed, it builds the differential pressure. On hitting the set level of differential pressure, the resin has to be regenerated. So, the presence of crud can increase the frequency of regenerations, which would increase the overall costs and the discharge of wastewater. Hence, there is a need for a system that can handle suspended solids. The most ideal way to deal with this challenge is to opt for a cartridge filter system.

Gopani Clarypleat CPU Filters for Condensate Polishing Units

Clarypleat CPU is a brand of cartridge filter produced especially for filtration systems of condensate polishing units. These are high-efficiency pleated type filters, made up of polypropylene, with larger surface area and higher dirt holding capacity. They don’t contain any surfactants or binders, hence there is no possibility of leachables or media migration. If your need is of a very high efficiency filtration system, these are the filters you are looking for.

Reasons for Employing Gopani Clarypleat CPU Filters for Condensate Polishing Units

  1. They are highly efficient.
  2. Larger surface area allows higher flow rates at reduced pressure loss.
  3. Greater dirt holding capacity leads to reduction in overall costs.
  4. Entirely made up of polypropylene, hence good thermal resistance, and wider chemical compatibility.
  5. Available in a wide range of porosities, 0.2 to 50 microns.
  6. All the components are sealed by advanced thermal welding techniques.

Specifications of Gopani Clarypleat CPU

  1. Filter Media: Pleated Polypropylene
  2. Length: 60 inch and 70 inch
  3. Filtration Rating: 1, 5, and 10 microns (absolute)
  4. Max. Forward Differential Pressure: 3.0 bar @ 65 degrees C
  5. Max. Reverse Differential Pressure: 2.0 bar @ 20 degrees C
  6. Temperature Rating: Max. 82 degrees C

Source: Gopani Product Systems




How to Enhance the Performance and Service Life of Condensate Polishing Units in Power Plants?

Wednesday, June 20th, 2018

Ahmedabad – Gopani Product Systems, a leading manufacturer and supplier of filtration systems, offers pre-filtration systems for condensate polishing units to enhance their performance and service life. We carry with us over 25 years of experience, and hence the expertise, to offer world-class systems for critical filtration needs.

Condensate Polishing Units save your turbines and boilers from scaling and corrosion and hence ensure their efficiency and longer service life. But to enhance the performance and life of your condensate polishing units, you need to protect them from suspended solids. Gopani’s filtration systems are the finest solution for ensuring safety of your polishing units.

What are Condensate Polishing Units (CPU)?

The modern-day power stations are focussed on making the optimum utilization of resources. Hence, the two factors of utmost importance are: efficient performance and longer service life of the equipments. This has lead to the increase in usage of Condensate Polishing Units (CPU). These units purify the condensed water before it re-enters turbines and boilers, thereby saving them from scaling and corrosion. Most of the polishing units have beds of resins that, through ionic reactions, remove the dissolved impurities.

The need of Pre-filters for Condensate Polishing Units (CPU)

While CPUs are good at handling dissolved impurities, they aren’t meant to tackle the suspended solids. More often than not, condensate carries crud along with the dissolved impurities. The suspended impurities coming into water are referred to as crud. These impurities increase the differential pressure across resin bed which leads to premature termination of service cycle. To restart the process, the resin beds need to be regenerated which would take 8-10 hours. Frequent regenerations would lead to higher chemical consumption, higher generation of waste-water, and lower life of resins. All these factors would eventually increase operating costs. The solution to save ourselves from this hassle is pre-filtration.

Pre-filtration Systems for CPU

  1. The advantage of using a pre-filter is the increase in service cycle duration of CPU. Without pre-filtration, the system would rapidly see an upsurge in differential pressure and would shut down for the need of regeneration. But with good quality filtration, we can increase the cycle duration as our filter elements will take the load of suspended solids.
  2. These filtration systems are essentially housing(s) comprising of cartridge filters. The cartridge filter elements can either be wound or pleated.
  3. The filter elements in these systems can be as long as 70 inch. Longer elements would mean compact housings and lesser occupance of area.
  1. In many power plants today, there is an insistence on having clean water chemistry. In such situations the load on CPU is high, which makes it mandatory to have a pre-filtration system for an obstacle-free operation.
  2. Earlier power stations used to operate on base-load basis, but now most of them have shifted towards variable-load operation due to the fluctuating power demand. The latter leads to the generation of more crud which puts more pressure on pre-filters. Add to it, the filtration systems are designed as per the old conditions. To cope up with the new load, they need to be retrofitted.
  3. In areas with water scarcity, the air-cooled condensers are being adopted. These power stations operate at higher condensing temperatures and generate more crud as compared to the water-cooled condensers. So, in those situations, the usage of pre-filters becomes inevitable.

Filter Elements Offered by Gopani

Gopani Clarypleat CPU

  1. Filter Media: Pleated Polypropylene
  2. Length: 60 inch and 70 inch
  3. Filtration Rating: 1, 5, and 10 microns (absolute)
  4. Max. Forward Differential Pressure: 3.0 bar @ 65 degrees C
  5. Max. Reverse Differential Pressure: 2.0 bar @ 20 degrees C
  6. Temperature Rating: Max. 82 degrees C
Gopani Clarywound CPU

  1. Filter Media: Wound Polypropylene on a Steel Core
  2. Length: 60 inch to 70 inch
  3. Filtration Rating: 1, 5, and 10 microns (nominal)
  4. Max. Forward Differential Pressure: 3.0 bar @ 65 degrees C
  5. Temperature Rating: Max. 82 degrees C

Salient Features of Gopani Filters

  1. Gopani filters can be directly installed into your existing housings. No changes are needed. For a new system, we can also build high quality housings.
  2. Up to 70 inch long filters are available. Long elements are a necessity when dealing with high flow or high contaminant application. Longer the element, lesser will be the floor-space requirement.
  3. Compatibility with wide range of chemicals.
  4. Clarypleat CPU comes with a complete polypropylene structure. Its pleated construction offers large surface area.
  5. Clarywound CPU, due to its construction, offers true depth filtration and hence higher particle removal efficiency. Its stainless steel core can withstand higher differential pressure

  Source: Gopani Product Systems