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. Chapter 2 describes evaluation of the plant and the determination of features that would be desirable for use with offsite regeneration. Scheme was prefilter, vertical cylindrical condensate polishing unit vessels and its external regeneration system. Feb 10, 2017 condensate polishing unit and its uses in power plant.
Condensate polishing technologies for combined cycle. Condensate polishing custom water treatment systems. These units are usually designed for a high specific flow rate 80 to 120 bed volumes per hour. Condensate polishing for nuclear and super critical power. Condensate polishing typically involves ion exchange technology for the removal of trace dissolved minerals and suspended matter. Condensate polishing units based on anaerobic and aerobic treatment for reuse in. Better industrial water treatment with condensate polishing.
This paper will address deep bed ion exchange cpp and its application in the power industry for once through steam generators otsg, critical and. Slideshare uses cookies to improve functionality and performance, and to provide you with relevant advertising. Some plants used ultrasonic resin cleaners to remove the particulate iron oxides and then return the resins. Challenge in this plant was to design all the equipments on skid so that at site, skid can be just connected to one. Powdex precoat filter demineralizer graver water systems. 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.
Condensate polishers are used to maintain a proper quality of water by removing impurities from return condensate. This paper demonstrates how a condensate polishing unit can be successfully used to treat the feedwater for circulatingtype pressurized water reactors pwrs. Process condensate shall be generated at mp and lp levels and these shall be routed separately to the respective vessels in the condensate recovery system composed by several sections, each one located and dedicated to different process units areas. In large power stations, the flow rate through each condensate polishing unit is often 200 to 800 m 3 h. Condensate polishing for the power industry purolite. How it works condensate polishing differs from regular ion exchange in that ion exchange is only part of the overall process as the condensate is already of high quality and only requires polishing. 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. Design considerations for condensate polishing offsite. The condensate can be returned to an ultra pure state by simple polishing rather than using fresh make up process water. Jan 25, 2018 this is where a condensate polishing system becomes a vital part of an efficient industrial water treatment system. Epri condensate polisher guidelines technical report osti. Doc condensate polishing training manual eli salem.
We offer the worlds most complete, durable, highperformance solutions for combined cycle cp and filtration needs. One unit is always in service, and the other units automatically come online as the flow increases. Dow liquid separations dowex ion exchange resin guide to. If you continue browsing the site, you agree to the use of cookies on this website. Condensate polishing is the unsung hero of efficient plant operations, as it can remove impurities, prevent leaks, and avert shutdowns.
The ultimate goal of condensate polishing is to remove all soluble impurites and protect the high. 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. Scribd is the worlds largest social reading and publishing site. Condensate from evaporation plants is used as boiler feed water, process, cooling, and rinsing water or is directly discharged into a drainage ditch. 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. The benefits of condensate polishing are quicker start up and as a result full load conditions are reached early giving economic benefits. 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. We offer stateoftheart, comprehensive solutions for condensate polishing unit for sugar, distilleries, captive and cogen power plant ad process industries. Condensate polishing for nuclear and super critical power plants. Condensate polishing is a proven method of producing high purity demineralized water from recovered boiler condensate. Condensate polishing technologies for combined cycle power. For the steam generator plant with low steam pressure below 40 kgcm 2, the requirement of a condensate polishing unit is. The decision to polish return condensate for reuse is purely economical. Polisher type boiler type iron total copper total inlet outlet inlet outlet comrec mixed bed regeneration process db bwr 36 9,7 10 2,6 db o.
As the flow rate decreases, units will be removed from service based on the preprogrammed gpm settings. 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. 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. In large power stations, the flow rate through each condensate polishing unit is often 600 to m 3 h. This is the most economical and efficient system yet devised to provide both filtration and ion exchange capabilities.
Condensate polishing unit detail paramount limited. 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. Powdex systems have been designed with condensate flow capacities up to 33,000 gpm 7,500 m3hr for a single installation. 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. Condensate polishing unit free download as pdf file. The condensate polishing units are also used in refineries and petrochemicals, fertilizer to polish the process condensate and surface condensate for reuse.
During the process, the condensate picks up contaminant like iron, copper, oil, silica etc. Condensate polishing unit manufacturer cpu naranlala. This feature provides uninterrupted flow of soft water 247 during. This project profile illustrates the process for cpu and external regeneration system. Condensate polishing unit reliability engineering boiler. Using this knowledge base, a range of standardized mixedbed units for condensate polishing has been created. Each unit treats a condensate flow of 35,568 m3day. Jan 01, 2017 looking for condensate polishing unit. Condensate contamination by james mcdonald, pe, cwt originally published. Condensate polishers add operating reliability and flexibility. Condensate polisher system technology condensate polishing differs from regular ion exchange in that ion exchange is only part of the overall process as the condensate is already of high quality and only requires polishing.
Condensate polisher savings of 23% realized through value. Water chemistry at the salem generating station, a twounit, fourloop westinghouse pwr located in new jersey, is discussed. 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. Performance of the existing unit, targets for future. Swapan basu, ajay kumar debnath, in power plant instrumentation and control handbook, 2015. Condensate polishing unit and its uses in power plant. It can also be applied to condensed steam from any steam system being returned to the boiler. 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. Although early bwr deep bed plants included regeneration systems, none are operable today and only a few were ever operated. Boiler pressure is the key factor for determining the requirement of a cpu system see figure ii3. Condensate polishing units are typically installed for super thermal power stations with the main objective of improving the boiler water quality. Condensate polishing unit for alkhalij power plant, libya was executed in the year 2011. 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.
Multiutilities facility separate bed technology boustead salcon designed and supplied two condensate polishing units for a 2 x 800 mw ultra critical coalfired power plant located in kaohsiung, taiwan. Recovered condensate shall be then routed and treated in the condensate polishing unit cpu. 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 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. Whereas condensate from sugar industry is having characteristics, bod from 100150 mgl, cod 250 to 320 mgl, colour less and ph around 6. 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.
Epri condensate polisher guidelines technical report. Wigen is a recognized leader in the design and fabrication of condensate polishing systems for industrial, power and steam utility applications. Condensate polishing packages sewage treatment reverse. Standardized units reduce time to market, optimize cost, facilitate maintenance and represent proven solutions. Guideline for offsite regeneration of condensate polishing. Message box arial, font size 18 bold condensate polishing unit high speed mixed bed a resin based ion exchange system 3. Impurities in the condensate can be removed by membrane filtration, in the particular case by reverse osmosis, and high condensate qualities can be achieved. The powdex condensate polishing system consists of a vessel containing precoatable filter septa. The system was designed for the shut off head of the condensate extraction pumps as a good engineering practice. Our expertise and trackrecord in the power sector and our proprietary condensate polishing technologies are amongst the best in the world. Mixed bed polisher mbp and condensate polisher cpp. Condensate polishing unit free ebook download as pdf file. Condensate polisher gea engineering for a better world.
Condensate polishing unit distillery process condensate. This includes power generating facilities using oncethrough steam generators otsg, critical and supercritical steam. Condensate polishing unit the condensate polishing unit removes crud mostly consisting of sodium, chloride, silica and carbon dioxide. 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.
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. Aug 03, 2012 ovivos conesep system is a fully automated process for external regeneration of ion exchange resin, used in deep bed ion exchange condensate polishing plant. 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. Cp safeguards highvalue plant assets by reducing startupdowntime, stabilizing cycle chemistry, minimizing corrosion transport and. This fertilizer plant is located in nigeria, africa. For the steam generator plant with low steam pressure below 40 kgcm 2, the requirement of a condensate polishing unit is usually avoided. High rate mixed beds can be used alone, in combina. 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. Condensate polishing normally applies to the treatment of condensed steam from turbines operating in the power industry. This is where a condensate polishing system becomes a vital part of an efficient industrial water treatment system. 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. Condensate polishing treatment process boustead salcon. 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.
The condensate polisher was required to treat a design flow rate of 75 gpm. 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. Introduction condensate polishing plants cpp have been traditionally applied for the treatment of condensed steam from turbines and process use. Condensate polishing unit aqua designs offers condensate polishing unit having collaboration with italian technology provider who has more than 15 installations in europe. These systems are used to maintain a high quality of water by removing impurities from condensate return streams. Water chemistry at the salem generating station, a two unit, fourloop westinghouse pwr located in new jersey, is discussed. High rate mixed beds use bead type ion exchange resins to polish condensate. With the mgr movex system, exhausted ion exchange resins are moved into special vessels where a high degree of regeneration without contamination is. Condensate polishing unit deionized demineralised 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.
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