Method and device for precisely processing nuclear power station condensation water

Abstract

The invention discloses a method and a device for precisely processing nuclear power station condensation water. The device comprises a prefilter, a cation exchanger, a resin catcher A, a cation and anion exchanger, a resin catcher B, a pipeline inlet and a pipeline outlet, wherein the pipeline inlet, the prefilter, the cation exchanger, the esin catcher A, the cation and anion exchanger, the resin catcher B and the pipeline outlet are successively connected in series; a valve 1 is arranged between the pipeline inlet and the prefilter; a valve 2 and a valve 3 are arranged between the prefilter and the cation exchanger; a valve 4 is arranged between the resin catcher B and the pipeline outlet; the inlet end of the valve 1 is connected with one end of the valve 5; the other end of the valve5 is connected with the inlet end of the valve 3; the outlet end of the valve 2 is connected with one end of a valve 6; and the other end of the valve 6 is connected with the pipeline outlet. According to the method and the device, the advanced treatment requirement on the condensation water under different operation working conditions can be satisfied.

Description

technical field [0001] The invention relates to a method and device for fine treatment of condensed water in nuclear power plants, belonging to the field of industrial water treatment. Background technique [0002] At present, in nuclear power units, the condensed water in the secondary circuit is usually purified by using a cation exchanger, a resin trap, an anion and cation exchanger, and a resin trap in series to complete the water purification. The ammonia and other cations and corrosion products contained in the condensed water to be advanced treatment are removed by the cation resin filler in the cation exchanger, and the ionic salts in the condensed water are further removed by the anion and cation resin fillers in the anion and cation exchanger to reach the depth of the condensate Treatment, because the resin filler filled in the ion exchanger is very sensitive to metal oxides such as iron, the metal oxides and other suspended solids in the condensed water to be furt...

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Problems solved by technology

[0006] The object of the present invention is to provide a method and device for condensate polishing in nuclear power plants, which can effectively remove metal corrosion products and suspended impurities, prolong the operation period of ion exchangers and protect resin fillers, and greatly shorten the time required to meet the requirements of operational ions. The time of the exchanger condition can meet the operation requirements of the condensate purification device under different working conditions, effectively solve the problem of serious waste of water resources, and can effectively intercept the extremely fine particles in the condensate water, and can also improve the economic efficiency. benefit, simplify system piping, improve system reliability and simplify operation

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