The unit at eddystone station 1 is a two unit full flow condensate polisher located after the last lp heater and before the deaerator. We can help you determine if powdex is a suitable solution for your. Condensate water polishing system boiler filtration. Us4191644a regeneration of mixed resin bed used for. Feb 10, 2017 chloride content in caustic used for anion regeneration should be compatible with rayon grade a. Each unit treats a condensate flow of 35,568 m3day. Condensate polishing packages sewage treatment reverse. The conesep system is designed to transfer ion exchange resins from the service polishing unit to entirely separate vessels for regeneration. 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 15 years. The intimate mixture of resins provides a perfect environment for removal of dissolved ionic contaminants.
Presented by zohaib hassan khokhar sabir munir wahla 4 basics of power production 5 basics of power production 6 basics of power production the burning of fuels in the furnace of a boiler produces heat in turn heats up the water in. This fertilizer plant is located in nigeria, africa. Filter elements are precoated with ion exchange resin to provide the dual function of ion exchange and filtration a unique solution in condensate polishing. This is condensate produced from steam reboilers heat exchangers. It can also be applied to condensed steam from any steam system being returned to the boiler. 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. Condensate polishing with separix external regeneration water technologies why polish condensate. Condensate polisher ion exchange resin regeneration. A highly important safety net for more efficient plants process eliminates the need for costly sensors or specialty chemicals to identify and separate.
As you will see, the equipment and installation roi was less than 10 months. Wigen is a recognized leader in the design and fabrication of condensate polishing systems for industrial, power and steam utility applications. Chloride content in caustic used for anion regeneration should be compatible with rayon grade a. With the mgr movex system, exhausted ion exchange resins are moved into special vessels where a high degree of regeneration without contamination is. In an alternative embodiment cation resin fines are physically separated from the anion resin cut. This condensate polishing is the unsung hero of efficient plant operations, as it can remove impurities, prevent leaks, and avert shutdowns. Pdf dow guide condensate polishing free download pdf.
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. Externally regenerated condensate polishing technology key. 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. This is particularly important with 3700 series units, where there is a suction lift. Condensate polishing systems for other applications typically feature insitu regeneration using conventional equipment. This article explores the advantages of condensate polishing systemspart of a robust industrial water treatment solution that helps prolong equipment life, boost efficiencies, and reduce water, energy, and chemical consumption in power generation and other industrial applications that involve highpressure, hightemperature boilers, improvements in the water treatment process can. As you will see, the equipment and installation roi was less than. Mixed bed polishing is a well understood ionexchange based polishing technology and comprises a resin bed of cation and anion resins, intimately mixed, housed within a cylindrical vessel. 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. The process is reversed when the resin is fully regenerated, transferring it back into the service unit. Condensate polishing technologies for combined cycle.
Condensate polisher gea engineering for a better world. 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. Where polishing and filtration are required due to suspended solids in the condensate, powdex may be the solution. 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.
Dow liquid separations dowex ion exchange resin guide to. Condensate system hvac pump free 30day trial scribd. These systems are used to maintain a high quality of water by removing impurities from condensate return streams. Condensate polishing technologies for combined cycle power. 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 for the power industry purolite. Description download dow guide condensate polishing free in pdf format. Powdex systems have been designed with condensate flow capacities up to 33,000 gpm 7,500 m3hr for a single installation. Both cation and anion resin quantities are to be made up to the design quantities so as to maintain their interface level in resin separation unit.
Presented by zohaib hassan khokhar sabir munir wahla 4 basics of power production 5 basics of power production 6 basics of power production the burning of fuels in the furnace of a boiler produces heat in turn heats up the water in the boiler and converts it. This is the most economical and efficient system yet devised to provide both filtration and ion exchange capabilities. Nov 11, 2010 presented at globalspecs august 2010 industrial processing virtual tradeshow. The system is designed to treat 445 gpm of condensate and is replacing. The ultimate goal of condensate polishing is to remove all soluble impurites and protect the high.
Some plants used ultrasonic resin cleaners to remove the particulate iron oxides and then return the resins. Condensate unit article about condensate unit by the. No ion exchange resin regeneration system will be provided. In large power stations, the flow rate through each condensate polishing unit is often 600 to m 3 h. Proper maintenance of water chemistry helps in minimizing corrosion, deposition, and scaling problems in boiler and turbine and prevents costly shutdown and material replacement. Although early bwr deep bed plants included regeneration systems, none are operable today and only a few were ever operated. A process is disclosed in which a spent mixed anioncation exchange resin bed is hydraulically separated into cation, anion and interface resin cuts.
Mixed resin is transferred to the cation regeneration unit. Larger autoclaves with integral or standalone steam generators and water cooling systems use a lot more water per cycle. The system treats plant return condensate to produce 9355 gpm of polished condensate. The cation regeneration unit features an optimized dished nozzleplate design with little or no solids removal required within this vessel, while still. The touchclaver and touchclavelab f from lte scientific, oldham, uk, use as little as 4 l of water per cycle thanks to their inchamber heating, fan cooling system and aircooled condensate units. The interface resin cut is further classified by various physical separation techniques. These units are usually designed for a high specific flow rate 80 to 120 bed volumes per hour. Condensate polishing system shipped to university in. 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 polishing unit for alkhalij power plant, libya was executed in the year 2011.
The exchange of ions is achieved through the use of resin beds contained in two or more separate vertical pressure vessels. Operation, maintenance and installation manual condensate. Both cation and anion resin quantities are to be made up to the design quantities so as. When the exchange capacity of the resins are exhausted, the spent resin is transferred to an external system for regeneration. The powdex condensate polishing system consists of a vessel containing precoatable filter septa. Condensate polishing can improve bottom line by reducing the losses or damages caused by corrosion and deposits. The conesep technology isolates and transfers ion exchange resins from the condensate polishing unit to external vessels for separation and regeneration. In large power stations, the flow rate through each condensate polishing unit is often 200 to 800 m 3 h.
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 unit at eddystone station 1 is a twounit full flow condensate polisher located after the last lp heater and before the deaerator. Presented at globalspecs august 2010 industrial processing virtual tradeshow. 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.
For existing condensate polishing plants in which these systems are in need of replacement or extensive overhauls or in some cases where new plants are built without this equipment, offsite regeneration is the solution. Box 1608, 1414 east linden avenue, linden, nj 07036, usa received december 1996. The system is designed to treat 445 gpm of condensate and is replacing an existing unit which had reached the end of its life. Process condensate shall be generated at mp and lp. Jan 25, 2018 this article explores the advantages of condensate polishing systemspart of a robust industrial water treatment solution that helps prolong equipment life, boost efficiencies, and reduce water, energy, and chemical consumption in power generation and other industrial applications that involve highpressure, hightemperature boilers, improvements in the water treatment process can yield. 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. 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. Both systems also include dedicated acid and caustic regeneration skids. Evoqua water technologies evoqua is a worldwide leader in resin regeneration services. Resin bed regeneration guide in water treatment processes. 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. Powdered resin for condensate polishing sciencedirect. Condensate polishing treatment process boustead salcon.
Role of water chemistry is very crucial for safe and efficient operation of vital components in feedwatersteam circuit. Download as ppt, pdf, txt or read online from scribd. An introduction to condensate polishing condensate polishinga 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. A common neutralization system including tanks and pump skid is provided to neutralize the regeneration waste water prior to site outfall unit. The ex tended lifetime of ion exchange resin led to the reduction in the amount of regenerant used and regeneration waste produced. 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. In order to promote public education and public safety, equal justice for all, a better informed citizenry, the rule of law, world trade and world peace, this legal document is hereby made available on a noncommercial basis, as it is the right of all humans to know and speak the laws that govern them. Condensate polishing for nuclear and super critical power. We offer the worlds most complete, durable, highperformance solutions for combined cycle cp and filtration needs. Condensate polishing system shipped to university in massachusetts a triple all stainless steel condensate polisher was shipped to a university in cambridge, massachusetts.
Condensate from evaporation plants is used as boiler feed water, process, cooling, and rinsing water or is directly discharged into a drainage ditch. Pdf eta recovery process with ion exchange and evaporation. Condensate polishing unit aqua designs offers condensate polishing unit having collaboration with italian technology provider who has more than 15 installations in europe. Resin bed regeneration in water treatment processes analytical applications. Low level conductivity monitoring of the process water using type 462025 transmitters and associated conductivity cells. Condensate polishing normally applies to the treatment of condensed steam from turbines operating in the power industry. In a passive alwr plant, properly designed condensate polishers will maintain water chemistry within specified limits, assuming a condenser tube leak of 0. Condensate polishing custom water treatment systems. Condensate polishing unit the condensate polishing unit will treat the. Condensate polishing systems must produce high purity effluent satisfying the following requirements. Better industrial water treatment with condensate polishing.