Condensate polishing unit reliability engineering boiler scribd. The regeneration process offered by the bidder shall be of proven design and shall. Condensate polishers add operating reliability and flexibility. There are many condensate polishing, mixed bed regeneration systems operating with. Condensate polishing systems must produce high purity effluent satisfying the following requirements. Ultralow chloride content water production for corrosion control. Sepraeight two vessel bottom transfer regeneration system.
Capacity is defined as the amount of exchangeable ions a unit quantity of resin will. Condensate polishing is a proven method of producing high purity demineralized water from recovered boiler condensate. This paper provides a brief history and timeline of condensate polishing from the 1950s to the present. Doc condensate polishing training manual eli salem. 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. Condensate polishing unit and its uses in power plant. Successful condensate polishing maintains control of ionic and particulate impurity transport in the fossil plant and allows the unit to operate more reliably. 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. If you continue browsing the site, you agree to the use of cookies on this website. What links here related changes upload file special pages permanent link. Improvements in regeneration, resin separations, resin residuals. Condensate polishing systems for other applications typically feature insitu regeneration using conventional equipment. It then discusses the equipment, designs, process strategies, and operating techniques that. 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.
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. 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. Condensate polishing unit free ebook download as pdf file. Recommended operating conditions for mixed bed ion. These keywords were added by machine and not by the authors.
As you will see, the equipment and installation roi was less than. The deep bed cation resin condensate polisher is regenerated with 15 lb of. The increased corrosion products that result from air intrusion occurring in cycles that use aircooled condensers. The decision to polish return condensate for reuse is purely economical. Mixed resin is transferred to the cation regeneration unit. Condensate polishing for nuclear and super critical power plants. This is condensate produced from steam reboilers heat exchangers. Presented at globalspecs august 2010 industrial processing virtual tradeshow. Condensate polishing with separix external regeneration water technologies why polish condensate. Availability of offsite regeneration of deep bed resins cuts initial. Condensate polishing resin offsite regeneration reduce operating costs with improved manpower utilization and reduced regeneration frequency, improve onsite and personnel safety with the elimination of chemical storage and handling and limit environmental liability associated with wastewater discharge.
Condensate treatment is ideal for new combined cycle and cogeneration plants for treating. A condensate polisher is a device used to filter water condensed from steam as part of the. Condensate polishers are used to maintain a proper quality of water by removing impurities from return condensate. At millstone unit 2, seven 300 ft3 polisher vessels and eight, 200 ft3 resin charges are. This report will assist utilities in reducing the overall cost of condensate polishing by the use of offsite regeneration of the resins. Condensate polishing for nuclear and super critical power.
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