Precision filtering device and method for finely processing condensation water from nuclear power station

Abstract

The invention discloses precision filtering device and method for finely processing condensation water from a nuclear power station, relating to the field of nuclear power stations, wherein the precision filtering device is arranged between a condensation water pump and a condensation water booster pump; the precision filtering device comprises a precision filter and a valve; when the nuclear power station runs, water from the condensation water pump passes through a condensation water fine processing system and the precision filter in sequence and finally goes to the condensation water booster pump; and when the nuclear power station is started, water from the condensation water pump passes through the precision filter and the condensation water fine processing system in sequence and finally goes to the condensation water booster pump. A rear precision filter and a front precision filter in the embodiment are the same equipment and are switched by the valve to achieve use in front during starting or use at rear during the normal running, the steam-water quality of the secondary circuit of the nuclear power station is not only improved, the safe and high-level running of the nuclear power station is effectively ensured, but also the start time of the unit is greatly shortened, and the washing water amount at the starting of the unit is reduced.

Description

technical field [0001] The invention relates to the fine treatment of condensed water in nuclear power plants, in particular to a precision filter device and method for the fine treatment of condensed water in nuclear power plants. Background technique [0002] Nuclear power plants, also known as nuclear power plants, are power facilities that use the heat generated by one or several power reactors to generate electricity or generate electricity and heat. [0003] Taking the AP1000 nuclear power plant as an example, the condensate polishing system (including high-speed anode bed and high-speed mixed bed) is installed between the secondary circuit condensate pump and the condensate booster pump, and its basic function is to remove salt impurities in the condensate ( Such as sodium ions and sulfate ions, etc.) and mechanical impurities (mainly iron corrosion products). However, limited by the current structure, in currently operating nuclear power plants in China, it is still...

AI Technical Summary

Problems solved by technology

[0005] In order to solve the problem of excessive sulfuric acid radicals in the condensate polishing system of the prior art, as well as the long start-up time of the unit and the large amount of flushing water, the embodiment of the present invention provides a precision filtration device and method for condensate polishing in a nuclear power plant. It can effectively prevent the broken resin from decomposing into the secondary circuit steam-water system to produce sulfate ions, and at the same time effectively shorten the start-up time of the unit and reduce the amount of flushing water

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