Operating and regenerating control method of one-stage ion demineralization equipment

Abstract

The invention belongs to the technical field of nuclear power plant demineralization water production, and particularly relates to an operating and regenerating control method of one-stage ion demineralization equipment. The method is used for the control of the one-stage ion demineralization equipment of a nuclear power plant, and comprises: S1.1, opening a first gas discharge valve; S1.2, opening a first water inlet valve after receiving the opening feedback of the first gas discharge valve; S1.3, opening a first bottom water discharge valve after delayed waiting; S1.4, closing the first gasdischarge valve after the opening signal of the first bottom water discharge valve is triggered; S1.5, detecting the effluent of a cation exchanger, and opening a second gas discharge valve after theconductivity of the effluent of the cation exchanger is qualified; S1.6, opening a second water inlet valve; S1.7, opening the first water outlet valve; S1.8, closing the first bottom water dischargevalve; S1.9, opening a second bottom water discharge valve after delayed waiting; S1.10, closing the second gas discharge valve; S1.11, detecting the effluent of an anion exchanger, and opening a second water outlet valve after the conductivity of the effluent of the anion exchanger is qualified; and S1.12, closing the second bottom water discharge valve. According to the present invention, withthe method, the operation process is simplified, and the regeneration efficiency of the cation exchanger and the anion exchanger is increased.

Description

technical field [0001] The invention belongs to the technical field of desalinated water production in nuclear power plants, and in particular relates to a method for controlling the operation and regeneration of primary ion desalination equipment. Background technique [0002] The demineralized water production system (i.e. SDA system) is an important water supply system for nuclear power plants. Users include nuclear islands, conventional islands and various auxiliary systems, and the pipelines are spread throughout the plant. The production of qualified desalinated water plays a non-negligible role in the equipment life and process control of downstream users, especially nuclear-grade desalinated water, which has stricter water quality requirements. SDA system design output is 2×120m 3 / h, a total of 3 water treatment stages are designed to meet the amount of desalted water required by the power plant under various working conditions, such as start-up, shutdown, long-ter...

AI Technical Summary

Problems solved by technology

[0012] Aiming at the common problem of low automation of primary ion desalting equipment and the waste of materials for debugging and operation, the purpose of the present invention is to provide a method for controlling the operation and regeneration of primary ion desalting equipment, which can be used in modules The first-level ion desalination equipment is operated in an efficient way, mainly in the cation exchanger (positive bed), anion exchanger (yin bed), various turning machines, valves, instruments, etc., which can be put into operation or withdrawn in sequence according to the operating conditions of the main equipment.

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