Device and method for adjusting ratio of anion resin to cation resin in fine treatment high-speed mixed bed of thermal power plant

Abstract

The invention relates to a device and method for adjusting a ratio of anion resin to cation resin in a fine treatment high-speed mixed bed of a thermal power plant. According to a technical scheme in the invention, by adding a resin adjusting box, a resin adding funnel barrel, an ejector and branch anion resin adding pipes connected with corresponding regeneration towers, the quantitative addition of anion resin and cation resin is realized; quantitative reduction of the anion resin and the cation resin is achieved by connecting main resin outlet pipes of the corresponding regeneration towers with branch resin outlet pipelines, so the ratio of the anion resin to the cation resin in the high-speed mixed bed can be adjusted according to actual conditions; and a resin ratio adjusting opportunity and a specific adjusting amount are formulated through the method for adjusting the ratio of the anion resin to the cation resin in the high-speed mixed bed in the invention, so the periodic water production amount and water production efficiency of the high-speed mixed bed are improved, a resin regeneration period is shortened, acid and alkali consumption is reduced, the wastewater amount of the whole plant is reduced, water is saved, emission is reduced, funds are saved, and value is created for the power plant.

Description

technical field [0001] The invention relates to the technical field of condensate polishing treatment in thermal power plants, in particular to a device and method for adjusting the ratio of anion and cation resins in a high-speed mixed bed for finishing treatment in thermal power plants. Background technique [0002] At present, the high-speed mixed bed for condensate polishing in thermal power plants adopts the mixed treatment of anion and yang resins. The total volume of the resin designed for the high-speed mixed bed is fixed, but the ratio of anion and yang resins is not fixed, so it can be adjusted accordingly; when the high-speed mixed bed fails, the yin and yang in the mixed bed The resin is all output, the resin is separated, and then regenerated separately. The main problems at present: (1) The water production volume of the high-speed mixed bed is relatively small, and the general positive resin fails first, but some negative resins do not fail; (2) The acid and a...

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Problems solved by technology

The main problems at present: (1) The water production volume of the high-speed mixed bed is relatively small, and the general positive resin fails first, but some negative resins do not fail; (2) The acid and alkali consumption of resin regeneration is relatively large, the cost is relatively high, and the resulting regeneration There is a lot of waste liquid, which is not conducive to the zero discharge of waste water in the whole plant

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