Front-located cation bed cation regenerating column

Abstract

The invention relates to a front-located cation bed cation regenerating column, belonging to the technical field of reclaim equipment for precision processing of power plant condensation water. The front-located cation bed cation regenerating column comprises a housing, wherein two ends of the housing are enclosed by adopting an ellipse head curved surface form; the upper end of the housing is provided with an air inlet-outlet, an order washing water inlet and a manhole; the upper part of the housing is provided with a resin expansion space; the lower part in the housing is a resin layer; thebottom of the housing is provided with a bottom distribution device above which the resin layer is arranged; a distribution and collection device is arranged above the resin layer; the resin expansion space is arranged above the distribution and collection device; the housing of the resin expansion space is provided with a resin inlet; the lower end of the housing is provided with a resin outlet pipe and a back washing outlet; the resin outlet pipe is arranged in center of a lower ellipse head curved surface axis; and the back washing outlet is connected with the bottom distribution device.

Description

technical field [0001] The invention relates to a cation regeneration tower with a front cation bed, and belongs to the technical field of regeneration equipment for condensate polishing treatment in power plants. It is suitable for the resin regeneration application of the condensate polishing exchanger of the nuclear power plant conventional island condensate polishing system and the thermal power condensate polishing system for large flow (single rated flow > 1000 cubic meters per hour). Background technique [0002] PWR nuclear power conventional island condensate polishing system is conventionally equipped with pre-cation bed and high-speed mixed bed. The anode bed also plays the role of filtering the condensed water, so as to minimize the suspended particle impurities in the condensed water. That is to say, the pre-anode bed has this dual function, which provides a high-speed mixed bed for the following good running condition. [0003] The running period of the pr...

AI Technical Summary

Problems solved by technology

However, the traditional resin regeneration equipment mainly has the following deficiencies when used in the conventional island condensate polishing treatment of nuclear power plants: 1. The distribution and collection device is not uniform enough in liquid distribution and drainage, so that the effectiveness of the regeneration equipment cannot be fully exerted; 2. The lower part of the water collection and drainage / The structure of the spherical orifice plate of the backwash bottom distribution device and the distribution mode of the water collection cap are unreasonable, resulting in unreasonable distribution of the bottom water cap distribution drainage and backwash water and low-pressure air scrubbing, which makes the scrubbing and cleaning of the resin and the effect of regeneration is not ideal

It cannot meet the requirements of resin regeneration with large quantity and frequent regeneration frequency

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