System and method for improving resin separation degree of mid-extraction method in-vitro regeneration process

Abstract

The invention discloses a system and a method for improving the resin separation degree of a mid-extraction method in-vitro regeneration process. The device comprises a high-speed mixed bed spent resin pipeline, a separation / positive regeneration tower, a positive tower negative resin outlet valve, a negative regeneration tower, a positive tower mixed resin outlet valve, a mixed resin tower, a positive tower positive resin outlet valve, a storage tower, a mixed resin outlet valve of the mixed resin tower, a negative tower negative resin outlet valve, a storage tower resin outlet valve, a regenerated resin output pipeline and primary valves of the storage tower to the positive tower, according to the system and the method, the separation degree of the in-vitro regeneration process of the middle-extraction method can be improved, and the regeneration requirement of high-speed mixed bed hydrogen type operation is met.

Description

technical field [0001] The invention relates to a system and method for resin separation degree, in particular to a system and method for improving resin separation degree in in vitro regeneration process of medium pumping method. Background technique [0002] In order to avoid the danger of regeneration fluid leaking into the thermal system, the high-speed mixed bed for condensate polishing in power plants adopts an in vitro regeneration process. As an early in vitro regeneration process, the pumping method is still used in many domestic power plants. [0003] The in vitro regeneration process of the pumping method is composed of separation / positive regeneration tower, negative regeneration tower, fat mixing tower, storage tower and other equipment. After the separation / yang regeneration tower completes the cation and anion resin layering, the anion resin is transported to the anion regeneration tower from the anion outlet on the side, and the fat-mixing layer resin is tra...

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Problems solved by technology

[0005] The separation / positive regeneration tower has a large diameter, and the anion resin and mixed fat are conveyed from the side, which is easy to produce a conveying slope;

[0006] The positions of the anion outlet and the mixed fat outlet of the separation / yang regeneration tower are fixed, and the distance is very close, resulting in a very thin mixed fat layer;

[0007] The characteristics of the middle pumping method determine that the ratio of positive and negative resins cannot be adjusted, which cannot meet the current production needs

[0008] The above-mentioned problems in the middle pumping method lead to low resin separation, which cannot meet the regeneration requirements of high-speed mixed bed hydrogen operation, and cannot guarantee the effluent water quality of high-speed mixed bed

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