Condensate demineralization apparatus and condensate demineralization method

A desalination device and technology for condensed water, applied in water/sewage treatment, chemical instruments and methods, water/sludge/sewage treatment, etc. effect of load

Inactive Publication Date: 2016-10-12
EBARA CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the methods proposed so far relate to the purification treatment of radioactive waste liquid of nuclear power plants, and there is no example of purification of condensed water as primary cooling water.

Method used

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  • Condensate demineralization apparatus and condensate demineralization method
  • Condensate demineralization apparatus and condensate demineralization method
  • Condensate demineralization apparatus and condensate demineralization method

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Experimental program
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Effect test

Embodiment 1

[0042] use figure 2 The closed-loop test device shown (in the figure, "P" represents a pump, "DO" represents a dissolved oxygen meter, "FI" represents a flow meter, and "TI" represents a thermometer) circulates into the resin column in the raw water tank ( tank) hydrogen peroxide (H 2 o 2 ) concentration adjusted to 5mg / L, the TOC (total organic carbon) dissolved from the ion exchange resin was concentrated in the system, the concentration of the TOC was measured over time, and the dissolution rate of TOC from the ion exchange resin was measured. evaluate. The measurement of the TOC concentration was performed using a total organic carbon analyzer (TOC-V manufactured by Shimadzu Corporation). The main test conditions are as follows.

[0043] ·Column inner diameter: 25mmΦ

[0044] ·Water linear velocity: 40m / h

[0045] ·Temperature of treated water (pure water): 40°C

[0046] ·Hydrogen peroxide concentration: 5mg / L

[0047] As the resin column, three types of resin col...

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Abstract

A condensate demineralization method for a condensate treatment of a nuclear power generation plant, including: passing condensate at a linear flow rate ranging from 20 m / h to 200 m / h through a condensate demineralization apparatus (6) comprising an ion exchange resin layer filled therein wherein the ion exchange resin layer includes a mixed bed of a strongly acidic cation resin and a strongly basic anion resin and a metal doped resin in a volume ratio ranging from 2% to 50% relative to the mixed bed.

Description

technical field [0001] The present invention relates to a condensed water desalination method and device for nuclear power station equipment, in particular to a condensed water desalination method and device for decomposing and removing oxidation-promoting substances such as hydrogen peroxide contained in condensed water. Background technique [0002] In nuclear power plant equipment, for the purpose of purifying condensed water, a condensed water filtration device using a hollow fiber membrane filter and a desalination device using a granular ion exchange resin are installed. This condensate desalination device is provided for the purpose of reducing the radiation exposure of operators by suppressing corrosion of nuclear reactor constituent materials and removing radioactive substances in nuclear reactor water. [0003] For the condensed water desalination device containing ion exchange resin, the ion exchange resin must be replaced when the capacity of the ion exchange res...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G21F9/20
CPCG21F9/20B01J47/04C02F1/705G21F9/12C02F2101/006C02F2101/10C02F2103/023C02F2303/08G21D1/02B01J39/05B01J41/05C02F1/42Y02E30/00Y02E30/30C02F2001/427C02F2103/18
Inventor 出水丈志出口达也小松诚
Owner EBARA CORP
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