Combustion stabilizing and peak regulating system and combustion stabilizing and peak regulating method

Abstract

The invention provides a stable combustion peak regulation system and method based on ammonia adsorption and desorption reaction. The ammonia adsorption / desorption reaction is used for heat storage / release, the heat storage density is high, the heat storage / release temperature is low, the temperature change is small, and the energy conversion efficiency is high. The stable combustion peak regulation system comprises a boiler, a steam turbine, a condenser, a power generator, a heat storage device and a gas storage tank. Wherein the heat storage device comprises an ammonia adsorption and desorption reaction module, an electric heater for heating the ammonia adsorption and desorption reaction module, and a first heat exchanger for carrying out heat exchange with the ammonia adsorption and desorption reaction module; an inlet of the first heat exchanger is connected with a condensed water outlet of the condenser; the heat storage device is provided with an ammonia gas inlet and an ammonia gas outlet which are communicated with the ammonia adsorption and desorption reaction module; an ammonia gas inlet of the heat storage device is connected with an outlet of the gas storage tank, and an ammonia gas outlet of the heat storage device is connected with an inlet of the boiler.

Description

technical field [0001] The invention relates to the technical field of peak regulation of thermal power plants, in particular to a stable combustion peak regulation system based on ammonia adsorption and desorption reaction and a stable combustion peak regulation method. Background technique [0002] At present, the minimum load for stable operation of thermal power plants is generally 50%. When the load gradually decreases, first, the flue gas temperature at the inlet of the denitrification device will be too low, which will cause the denitration device to fail to work and the problem of substandard pollutant discharge; The further reduction of the flow rate of oil, etc.) will cause uneven mixing in the boiler, and the boiler cannot burn stably; if the load is also reduced, the local temperature in the boiler will eventually be too low, resulting in flameout and serious safety of the black furnace. question. [0003] Under the condition of ensuring the low-load and stab...

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Problems solved by technology

[0004] However, most of these peak-shaving systems use sensible heat storage materials. The heat storage density of sensible heat storage is generally low, and the peak-shaving system occupies a large area. Moreover, the storage / release reaction temperature of sensible heat storage is high, and the temperature changes Higher requirements are placed on the thermal insulation and other structures of the peak shaving system. The cost of heat storage is high. In addition, the energy is simply stored in the form of heat, and a large amount of heat is dissipated during storage, resulting in the overall energy consumption of the peak shaving system. waste

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