Condensate polishing unit and its uses in power plant. Inferring ph from conductivity and cation conductivity. Condensate polishing translates to operation savings through the conservation of water and energy. It then discusses the equipment, designs, process strategies, and operating techniques that. Condensate polishing plant cpp, cation polisher cp, mixed bed polisher mbp, offsite regeneration, fresh resin tank, exhausted resin tank. Graver is the largest condensate system supplier in the world with hundreds of installations over the past sixty years and over 40 patents covering various aspects of condensate polishing technology. Condensate polishing system shipped to university in massachusetts a triple all stainless steel condensate polisher was shipped to a university in cambridge, massachusetts. Fossil units equipped with suitable polishing systems have important. Condensate polishing system for pwr nuclear power plant. Ultrapure water, julyaugust 2003, volume 20, number 6 in a well maintained, properly operating boiler system, condensate is a relatively high purity water with low conductivity and minimal dissolved solids. Collects gases discharged from process safety valves and rupture disks. Externally regenerated condensate polishing technology key.
The 2x500mw station of ntpc vindhyachal has deep bed type full flow condensate polishing system supplied by ms driplex. Download limit exceeded you have exceeded your daily download allowance. Oct 28, 2011 condensate polishing system shipped to university in massachusetts a triple all stainless steel condensate polisher was shipped to a university in cambridge, massachusetts. Condensate polishing unit capacity 80m 3 h gangamai industries and construections ltd. Driplex offers a wide range of condensate polishing solutions, from deep bed condensate polishers and powdered resin condensate treatment, to special resin grades and offsite regeneration. The condensate polishing plant consists of two sets of two units per set, each unit capable of 50% flow of 640 m3hr. Polishing condensate reduces the risk of damage to the boiler and the turbine caused by the concentration of soluble impurities that corrode internals which contribute to insoluble impurities such as copper, iron and silica in the recirculating stream. The polisher removes impurities from the condensate return water reducing scale, boosting heattransfer efficiency, reducing damage that impurities can cause to expensive boiler equipment, and increasing the amount of condensate return water that can be reintroduced into the. Polyamine is a term commonly used in the technical and commercial literature to describe both a relatively new class of boiler treatment technology, as well as. These units were retrofitted in the early 1960s into the condensate system specifically to remove copper from the condenser and lp heaters before it could carry over. Graver water, a leading equipment supplier of condensate polishing equipment cp for the power generation market for over 60 years, recently launched a range of stateoftheart standardized and.
Resins are ground to a fine granular form that is appropriate for combining into. Mixed bed polisher mbp and condensate polisher cpp. Condensate from evaporation plants is used as boiler feed water, process, cooling, and rinsing water or is directly discharged into a drainage ditch. A highly important safety net for more efficient plants process eliminates the need for costly sensors or specialty chemicals to identify and separate the resin types. Design, engineering, manufacture, inspection and testing. Chapter 2 describes evaluation of the plant and the determination of features that would be desirable for use with offsite regeneration. Condensate polishing operations rely on ion exchange technology consisting of selective columns that are capable to reliably and consistently produce water with minimal impurities and almost zero leakage. Condensate polisher ready for shipment to chemical plant in louisiana reskem will be shipping a condensate polisher to a chemical plant in louisiana in a two days. At millstone unit 2, seven 300 ft3 polisher vessels and eight, 200 ft3 resin charges are. The unit at eddystone station 1 is a two unit full flow condensate polisher located after the last lp heater and before the deaerator.
Condensate polishing plays a vital role in power plant cycle chemistry. They are thus often used for sea water or brackish water cooled condensers where a leak could cause heavy condensate contamination. Condensate polishers are used to maintain a proper quality of water by removing impurities from return condensate. Ecodyne offers a wide variety of custom designed water treatment equipment, and therefore can be the sole source for all your water treatment needs.
Condensate polishing unit for alkhalij power plant, libya was executed in the year 2011. Condensate polishing typically involves ion exchange technology for the removal of trace dissolved minerals and suspended matter. Contact us today and we can help you choose the proper condensate polisher system to meet your requirements. The powdex condensate polishing system consists of a vessel containing precoatable filter septa. Guide for condensate polishing power plant see other formats k t disclosure to promote the right to information whereas the parliament of india has set out to provide a practical regime of right to information for citizens to secure access to information under the control of public authorities, in order to promote transparency and accountability in the. Condensate polishing treatment process boustead salcon. Doc condensate polishing training manual eli salem. The ultimate goal of condensate polishing is to remove all soluble impurites and protect the high. Condensate polishing unit reliability engineering boiler scribd. When the operating pressure is not too high, cylindrical vessels are used, but at 4 mpa 40 bar or above, spherical vessels are necessary to.
Condensate polishing powers combined cycle operations including ngccs condensate polishing cp is an essential component of combined cycle plant design and operation because high purity condensate maximizes uptime. The units which is cooled by fresh water will be shutdown immediately with 2561h continuous. The decision to polish return condensate for reuse is purely economical. In large power stations, the flow rate through each condensate polishing unit is often 200 to 800 m 3 h. Using a condensate polisher prolongs the service lives of equipment by reducing the rate of corrosion. Condensate polishing unit the condensate polishing unit removes crud mostly consisting of sodium, chloride, silica and carbon dioxide. This project profile illustrates the process for cpu and external regeneration system. These systems are used to maintain a high quality of water by removing impurities from condensate return streams. An introduction to condensate polishing condensate polishing a preventative approach 3 the role of ion exchange in condensate polishing 3 the purpose of this guide 4 the type of condensate polishing operation depends on the operating parameters boiler pressure 4 condensate polishing systems currently used or proposed for operation. The condensate polisher was required to treat a design flow rate of 75 gpm. Thus we propose a condensate polishing unit cpu for our proposed expansion.
Condensate polishers add operating reliability and flexibility. Pay a licensed contractor to pick up and dispose of the used compressor condensate. As a team effort, boustead salcon and boustead projects delivered a 2 x 6,000 m3day condensate polishing system for the 60 mw biomassclean coal plant located at tembusu, jurong island. Powdex systems have been designed with condensate flow capacities up to 33,000 gpm 7,500 m3hr for a single installation. This is the most economical and efficient system yet devised to provide both filtration and ion exchange capabilities. A mixedbed polisher unit will be required if the product water specification is below that achievable from the demineralization plant alone or if a higher degree of safety is required to ensure water quality. Distillery process condensate treatment and sugar cpu condensate polishing unit condensate from distillery unit is having characteristics bod ranging from 2200 to 2500 mgl, cod ranging from 4000 to 4500 mgl, colour less, acidic in nature. Condensate polishing custom water treatment systems.
Condephase 2014 web con phase bro amazon web services. The cation and anion resins in tk3 are now mixed with a blend of. Condensate polisher savings of 23% realized through value. Though cpu is an ion exchange based mixed bed system operating at elevated temperature, external regeneration is a must to avoid cross contamination to achieve stringent. The final contents of ammonia and urea in the treated condensate are such that it can be reused as boiler feed water after treatments in polishing unit. The design of condensate polishing system will be influenced by. Condensate polishing is the unsung hero of efficient plant operations, as it can remove impurities, prevent leaks, and avert shutdowns. Condensate polishing we are experts at condensate polishing. It can also be applied to condensed steam from any steam system being returned to the boiler. An introduction to condensate polishing condensate polishing a preventative approach condensate polishing is an important part of water treatment for any utility or industrial power generating system. Years of experience operating in over 80 installations have demonstrated that the unique design of the.
Design considerations for condensate polishing offsite. From oil and particulate removal within industrial applications to high pressure, pure water systems for nuclear power generation, ovivo has a range of solutions to suit any condensate polishing application. Jan 01, 2017 looking for condensate polishing unit. Slideshare uses cookies to improve functionality and performance, and to provide you with relevant advertising. During the plant normal operation, condensate polishing system is in hot standby, if the. The seller shall not be liable to the buyer, or to any other person, for the loss or damage, directly or indirectly, arising. We offer the worlds most complete, durable, highperformance solutions for combined cycle cp and filtration needs. Condensate polishing packages sewage treatment reverse. In response to this situation, epri established a condensate polishing training program. Condensate polishing can improve bottom line by reducing the losses or damages caused by corrosion and deposits. In large power stations, the flow rate through each condensate polishing unit is often 600 to m 3 h. Condensate polishing is a proven method of producing high purity, which can be economically returned to an ultrapure state by simple polishing rather than using fresh make up process water. International water conference engineers society of western.
Dow liquid separations dowex ion exchange resin guide to. This workshop will combine presentations on recycle water for cooling towers as. A process for converting and operating condensate polishing resins in the. Feb 10, 2017 condensate polishing unit and its uses in power plant. Condensate polishing unit the condensate polishing units are used in refineries and petrochemicals, fertilizer to polish the process condensate and surface condensate for reuse. This system will be used to treat condensate to save water treatment chemical costs, identify process equipment leaks and will likely improve product quality of the chemicals they. Condensate contamination by james mcdonald, pe, cwt originally published. Condensate polishing for nuclear and super critical power. Condensate unit article about condensate unit by the free. This paper provides a brief history and timeline of condensate polishing from the 1950s to the present. Using this knowledge base, a range of standardized mixedbed units for condensate polishing. The condensate can be returned to an ultra pure state by simple polishing rather than using fresh make up process water. Performance of the existing unit, targets for future.
Steam condensate polishing condensate polishing is a proven method of producing high purity, which can be economically returned to an ultrapure state by simple polishing rather than using fresh make up process water. Due to the large mass of resin, the exchange capacity is high. Better industrial water treatment with condensate polishing. One cost effective solution is sodium cycle condensate polishing. Condensate polishing system shipped to university in. Condensate polishing normally applies to the treatment of condensed steam from turbines operating in the power industry. The exchange of ions is achieved through the use of resin beds contained in two or more separate vertical pressure vessels. Condensate polishing technologies for combined cycle. Condensate polishing unit free ebook download as pdf file. This is where a condensate polishing system becomes a vital part of an efficient industrial water treatment system. Condensate polishing cp has a long history in critical, highpressure power generation applications beginning with mixed bed ion exchange demineralizer in the 1950s and followed by the introduction of powdered ion exchange precoat filter demineralizers in the 1960s. If you continue browsing the site, you agree to the use of cookies on this website. Condensate polishing provides a number of advantages in fossil units that include polishers in. Using this knowledge base, a range of standardized mixedbed units for condensate polishing has been created.
Impurities in the condensate can be removed by membrane filtration, in the particular case by reverse osmosis, and high condensate qualities can be achieved. Effluent treatment plants, etp, condensate polishing units. The most common ion exchange system used in condensate polishing is the mixed bed system, where the cation and anion resins are mixed together in a single compartment. Ultralow chloride content water production for corrosion control. Condensate polishing cp is an essential component of. Suppose that the original condensate unit is replaced by a new one, which is identical in all respects to the original except that it has a much larger receiver. It is frequently filled with polymer resins which are used to remove or exchange ions such that the purity of the condensate is maintained at or near that of distilled water. When the operating pressure is not too high, cylindrical vessels are used, but at 4 mpa 40 bar or above, spherical vessels are necessary to keep the shell thickness within reasonable limits. Commonly used as part of a power plants condensate system, it prevents premature chemical failure and deposition within the power cycle which would have resulted in loss of unit efficiency and possible mechanical. Polisher type boiler type sodium sulphate chloride inlet outlet inlet outlet inlet outlet db o. The system is designed to treat 445 gpm of condensate and is replacing an existing unit. Condensate polishing experts part of berkshire hathaway companys marmon water group, graver pioneered highperformance condensate polishing and water treatment for power generators around the globe.
Powdex precoat filter demineralizer graver water systems. Cpu condensate polishing unit we offer stateoftheart, comprehensive solutions for condensate polishing unit for sugar, distilleries, captive and cogen power plant ad process industries condensate polishing units based on anaerobic and aerobic treatment for reuse in processes. Because failure of the model to account for all forms of ionic contamination is a source of error, the most accurate inferred feedwater ph will be found in plants with full condensate polishing. Condensate polishing critical to protecting gasfired. Condensate polishing technologies for combined cycle power. Specifications developed prior to bidding called for a 30 diameter vessel containing 15 ft3 of condensate polishing condensate polisher savings of 23% realized through value engineering reskem corp po box 1059 media, pa 19063 8003231983 6103580717 6103584642 fax. Resin separation is key to condensate polishing system performance.
Each unit treats a condensate flow of 35,568 m3day. The patented conesep system has been supplied as part of the condensate polishing plants cpp to power plants worldwide, and ovivo is proud to continue this heritage. Condensate polishing for the power industry purolite. This process is extremely expensive and inconvenient. Wigen is a recognized leader in the design and fabrication of condensate polishing systems for industrial, power and steam utility applications. Condensate polisher gea engineering for a better world. During the process, the condensate picks up contaminant like iron, copper, oil, silica etc. These units are usually designed for a high specific flow rate 80 to 120 bed volumes per hour. Condensate polishing unit deionized demineralised water. Condensate polishing units are typically installed for super thermal power stations with the main objective of improving the boiler water quality. Rinse water outlet header of each condensatepolishing unit shall be provided with a pressure reducing valve and orifice.
The system is designed to treat 445 gpm of condensate and is replacing an existing unit which had reached the end of its life. The ultimate goal of condensate polishing is to remove all soluble impurites and protect the high pressure boilers. Condensate polishing unit aqua designs offers condensate polishing unit having collaboration with italian technology provider who has more than 15 installations in europe. Condensate polishing for nuclear and super critical power plants.
Whereas condensate from sugar industry is having characteristics, bod from 100150 mgl, cod 250 to 320. This fertilizer plant is located in nigeria, africa. High rate mixed beds use bead type ion exchange resins to polish condensate. Our expertise and trackrecord in the power sector and our proprietary condensate polishing technologies are amongst the best in the world. Current plans are to combine these recommendations with the pwr primary water chemistry guidelines. A condensate polisher is a device used to filter water condensed from steam as part of the steam cycle, for example in a conventional or nuclear power plant powdered resin or deep bed system. Jan 25, 2018 this is where a condensate polishing system becomes a vital part of an efficient industrial water treatment system. This includes power generating facilities using oncethrough steam generators otsg, critical and supercritical steam. High rate mixed beds can be used alone, in combina. Condensate polishing unit manufacturer cpu naranlala. A precoat of powdered ion exchange resin and other materials is placed on the septa and. We supply the north america condensate polishing market with 75% share in powdex and 60% share in deep bed systems north america in the last. Condensate polishers are resinbased ion exchange systems that are. A condensate polisher can be used on these units to reduce the level of contaminants in the steamwater cycle and ensure that chemistry limits do not play a major role in delaying unit startup times.
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