A tower-type solar-assisted calcium-based absorbent desulfurization and decarbonization system

Abstract

A tower-type solar-assisted calcium-based absorbent desulfurization and decarbonization system, including a boiler system and a flue gas desulfurization and decarbonization system, the flue gas desulfurization and decarbonization system includes a calciner, a vulcanization furnace, a cyclone separator, a carbonization furnace, an air preheating Heaters and chimneys also include a heat collection system and a circulation system, the heat collection system includes a heat absorption tower, a heliostat field and a heat absorber, and the heliostat field is arranged on the heat absorption tower of the tower solar energy Around, the heliostat field is composed of several heliostats, and each heliostat is mechanically driven to constantly reflect the solar radiation towards the same target point, and gather it at the heat absorber at the top of the heat absorption tower , the circulation system includes a cold molten salt storage tank, a hot molten salt storage tank and a molten salt / air heat exchanger, and the tower type solar heat collection system can provide the calciner with high-temperature reaction heat corresponding to the energy level, thereby saving desulfurization and desulfurization The fuel consumption of the carbon process; through the integrated optimization of the system to realize the cascade utilization of various energies.

Description

technical field [0001] The invention relates to the technical field of multi-energy comprehensive utilization system of new energy and coal combustion, in particular to a tower-type solar-assisted calcium-based absorbent desulfurization and decarbonization system. Background technique [0002] my country is a big country of coal production and consumption. In 2019, my country's coal consumption was as high as 2.804 billion tons of standard coal, more than half of which was used for power generation and heating; the installed capacity and power generation of coal power units accounted for 59.2% and 69.6% respectively, And will maintain an absolute dominant position for a long time. Therefore, as the main source of pollutants and greenhouse gas emissions in my country, the energy saving and emission reduction of coal power units is of great significance to the clean utilization and sustainable development of energy in my country. Most of the coal power units currently in servi...

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Problems solved by technology

[0005] However, in the patent No. CN201610028494.3 titled “Invention Patent for Coal-fired Power Generation System Deeply Integrated with Calcium-based Absorbent Sequential Desulfurization and Decarbonization System”, the calcium-based absorbent synergistic desulfurization and decarbonization process and the regeneration process of the calciner are still It needs to consume natural gas, pulverized coal and other fuels and generate additional greenhouse gases, and in order to realize cascaded utilization of energy, it is also necessary to integrate and optimize the system

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