Flue gas moisture recovery and decarburization system based on concentrating photovoltaic photo-thermal

Abstract

A flue gas moisture recovery and decarbonization system based on concentrating photovoltaic photo-thermal comprises a concentrating photovoltaic photo-thermal subsystem, a flue gas moisture recovery subsystem and a flue gas decarbonization subsystem. According to the system, solar energy is absorbed by adopting the CPV / T (concentrating photovoltaic photo-thermal system), and electric energy and heat energy are more efficiently produced through the reflection effect of a CPC collecting lens; moisture in the flue gas is recovered by adopting a solution absorption method, and a circulating solution (LiCl solution) is regenerated by adopting an electrodialysis method; and membrane method decarburization is adopted, a ceramic membrane combination is selected to form a membrane assembly, and absorption liquid (ethanolamine solution) is regenerated by utilizing waste heat of a solar cell panel, so that gradient utilization and comprehensive utilization of energy are realized. The system provides an efficient, energy-saving and environment-friendly innovative solution for water recovery and decarburization of the flue gas of the power plant, and has great application potential and comprehensive economic benefits in the aspect of flue gas treatment of the coal-fired power plant.

Description

technical field [0001] The invention relates to a flue gas moisture recovery and decarbonization system based on concentrating photovoltaic light heat, and belongs to the technical field of energy saving and emission reduction of power plants. Background technique [0002] my country is the second largest power producer in the world, of which thermal power generation accounts for 75.4% of the total power generation, and thermal power will still be the main power generation in the future. However, the content of carbon dioxide in the flue gas of thermal power plants is 13.7%, which is the main area of ​​carbon dioxide emission in my country. In order to achieve the purpose of reducing emissions, flue gas decarbonization is a key issue that needs to be solved urgently. [0003] At present, power plants mainly adopt PCC carbon capture technology based on liquid absorbents, but there are problems such as high energy consumption, large footprint, equipment corrosion, foam and so...

AI Technical Summary

Problems solved by technology

[0005] At present, power plants mainly use the condensation method for water recovery, but there are problems such as chimney corrosion, bacteria mixed in flue gas, poor recycled water quality, large equipment footprint, and limited by ambient temperature.

For the widely studied membrane separation technology, there are problems of membrane fouling and membrane clogging, and the membrane materials are expensive and the economic cost is high.

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