Power station system and method for coupling temperature swing adsorption carbon capture

Abstract

The invention provides a power station system for coupling temperature swing adsorption carbon capture and a method for coupling temperature swing adsorption carbon capture, and relates to the technical field of supercritical carbon dioxide cycle power generation. The power station system adopts supercritical carbon dioxide cycle power generation, and comprises a coal-fired boiler body, a flue, acarbon capture adsorption tower, a power generation turbine system, a working medium compression system and a product gas recycling system, wherein the coal-fired boiler body generates flue gas containing carbon dioxide; the flue gas is discharged through the flue; the carbon capture adsorption tower captures carbon dioxide in the flue gas through a physical temperature swing adsorption method; the flue gas of a medium-temperature section is used as a first desorption heat source; and high-temperature side outlet working medium exhaust gas of a high-temperature heat regenerator is used as a second desorption heat source. According to the power station system and method for coupling temperature swing adsorption carbon capture provided by the invention, through the physical temperature swingadsorption method, low-grade heat is fully utilized, the overall energy utilization rate is increased, the problem that the exhaust gas temperature is too high can be effectively solved, and emissionof the carbon dioxide is reduced on a large scale.

Description

Technical field [0001] The invention relates to the technical field of supercritical carbon dioxide cycle power generation, in particular to a power station system coupled with temperature swing adsorption carbon capture and a method coupled with temperature swing adsorption carbon capture. Background technique [0002] Global warming is a global strategic issue currently facing all countries. China's primary energy source is mainly coal. At the end of 2014, coal power units accounted for about 62% of the power generation units. In 2013, China's emissions of carbon dioxide, sulfur dioxide, nitrogen oxides and soot all ranked first in the world. Among them, the emissions caused by coal-fired boilers The proportion is extremely high, so it is very important to optimize energy conservation and emission reduction for coal-fired boilers. Coal-fired power generation can no longer be an environmentally polluting power generation mode, and carbon dioxide emissions must be reduced on...

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Problems solved by technology

However, this kind of power station system is accompanied by various problems such as flue gas carbon capture consumes net power generation efficiency, carbon capture equipment has a complex structure, is easily corroded, and the cost of absorbents is high.

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