Nuclear power plant GST system demineralizer failure resin treatment method and device thereof
A technology of invalid resin and treatment method, which is applied in the field of nuclear power and can solve the problems of losing exchange capacity and so on
Active Publication Date: 2012-03-28
中广核工程有限公司 +1
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Problems solved by technology
[0006] The technical problem to be solved by the present invention is that, in view of the special failure pattern of the desalter of the GST system in the prior art, when the traditional sodium hydroxide agent is used to separate and regenerate, the cation resin precipitates copper oxide, which blocks the resin pores, and the resin due to It is completely scrapped due to the loss of exchange capacity, and a treatment method for the spent resin of the demineralizer of the nuclear power plant GST system is provided that has good separation effect and greatly improves the regeneration degree of the anion resin, thereby realizing the separation of the cation resin and the anion resin and recycling them.
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[0034] After the resin in the GST demineralizer of the generator stator cooling water system fails, isolate the demineralizer, remove the invalid resin, and replace it with new resin.
[0035] Such as figure 1 As shown, the GST system mixed failure resin separation and TRP process anion resin process schematic diagram, the figure shows the resin separation regeneration tank 1, positive resin cleaning storage tank 2, sodium bicarbonate solution metering box 3, sodium hydroxide solution metering Box 4, ammonium sulfate solution box 5.
[0036]The desalter failure resin treatment device of the GST system of the nuclear power plant includes a resin separation regeneration tank 1, a cation resin cleaning storage tank 2, a sodium bicarbonate solution metering box 3, a sodium hydroxide solution metering box 4, and an ammonium sulfate solution box 5. Among them, the sodium bicarbonate solution metering box 3 and the sodium hydroxide solution metering box 4 are respectively connected ...
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The invention discloses a demineralizer failure resin treatment method for a nuclear power plant GST system, and a device thereof. The method comprises the following steps of: first delaminating the failure resin by a flotation separation method and separating the delaminated resin; washing the separated lower-layer resin for standby application; washing the upper-layer resin, and using sodium bicarbonate solution for transformation firstly, and then using NaOH solution for exchange and generation, and washing; and mixing the upper-layer resin and the lower-layer resin after processing for recycling. The device comprises a resin separation regeneration tank, a cation resin washing and storage tank, a sodium bicarbonate solution measuring tank, an NaOH solution measuring tank and an ammonium sulfate tank, wherein the sodium bicarbonate solution measuring tank and the NaOH solution measuring tank are respectively communicated with the upper part of the resin separation regeneration tankby a delivery pipe; and the ammonium sulfate tank is communicated with the lower part of the resin separation regeneration tank by a delivery pipe provided with a check valve. The method has good separation effect, realizes the respective regeneration of the anion resin and the cation resin and greatly improves the regeneration rate of anion resin; and the device has simple structure and easy operation.
Description
technical field [0001] The invention belongs to the technical field of nuclear power, and relates to a method and a device for treating spent resin, in particular to a method and a device for treating failed resin of a GST system desalter in a nuclear power plant. Background technique [0002] Among the large electrical equipment in nuclear power plants, the generator is an important key equipment, and its safe, stable and economical operation has a great impact on the performance of the power plant. The stator cooling water system GST of the nuclear power generating set adopts the "water-hydrogen-hydrogen" cooling method, and the demineralized water distribution system SED provides cooling demineralized water and supplementary water with pH=7 for the stator winding. Water continuously dissolves carbon dioxide and oxygen in the air during operation, causing corrosion of the copper rods of the stator winding. Corrosion products will deposit and block the cooling water channe...
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IPC IPC(8): C08J11/04
CPCY02P20/143Y02W30/62
Inventor 张春艳汪沛丰
Owner 中广核工程有限公司