System and method for hydrogen production and peak regulation by electrolyzing concentrated water in thermal power plant

Abstract

The invention discloses a system and a method for hydrogen production and peak regulation by electrolyzing concentrated water in a thermal power plant. The system comprises concentrated water storage equipment, a hydrogen production system, a hydrogen storage system, an oxygen storage system and a combustion regulation system. Large-scale hydrogen production equipment is used for electrolyzing concentrated water or circulating water blow-off water of chemical water production, and the produced hydrogen or oxygen is used for assisting a boiler to achieve stable combustion, so that the minimum load of the boiler is reduced, and finally the output power of a generator is reduced. On one hand, emission reduction of the waste water of the thermal power plant is facilitated, zero emission of the waste water of the thermal power plant is facilitated, on the other hand, the peak regulation effect of the thermal power plant on the power utilization side and the power generation side is enhanced, larger peak regulation depth of the thermal power plant is facilitated, the flexibility of the thermal power plant is improved, and the profitability of the thermal power plant is improved.

Description

technical field [0001] The invention belongs to the technical field of hydrogen production by electrolysis of concentrated water in thermal power plants, and in particular relates to a system and method for peak regulation of hydrogen production by electrolysis of concentrated water in thermal power plants. Background technique [0002] During the production process of thermal power plants, the concentrated water of chemical water production and the sewage of circulating water have high salt content, so they can only be used for coal yard flushing, limestone pulping and other systems, and the remaining concentrated water is discharged outside the plant as sewage. In gas-fired power plants, since there are no coal yards and other places that consume a large amount of low-quality water, almost all such concentrated water is discharged outside, and a large amount of sewage discharge fees needs to be paid. In order to achieve zero discharge of wastewater, the existing technologi...

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Problems solved by technology

In order to achieve zero discharge of wastewater, the existing technologies include the flue evaporation and crystallization wastewater zero discharge system and the MVR concentrated evaporation and crystallization system, all of which use heat to evaporate the wastewater to achieve discharge, which consumes a lot of energy and reduces the economy.

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