A spray tower for spraying and trapping carbon dioxide in flue gas, and spray absorption test system and method

Abstract

The invention discloses a jet tower for catching carbon dioxide in smoke gas through spraying, a jet absorption test system and a method. A novel spraying tower used for efficiently catching carbon dioxide in the smoke gas through spraying an alkanolamine solution and a process system are used. The alkanolamine solution in the jet tower is sprayed into the jet tower through an atomization spray nozzle and takes contact reaction with the smoke gas entering the jet tower from the bottom, and an efficient absorption process of the carbon dioxide is realized. The jet tower is connected by a plurality of spray nozzles, and is mainly divided into a liquid storage section, a stabilization section and a pressure expansion section. The jet tower has the advantages that a series of problems of an existing filling tower generated due to the existence of filling materials are avoided; the gas-liquid mass transfer effect is optimized; the liquid-gas ratio operation range is enlarged; the investment cost and the maintenance cost of equipment are reduced. The jet tower realizes an efficient carbon dioxide catching process through alkanolamine solution spraying, and has the characteristics that the structure is simple; the investment cost is low; the mass transfer effect is good; the removal rate is high, and the like.

Description

technical field [0001] The invention belongs to the technical field of flue gas purification, and in particular relates to a spray tower for spraying and collecting carbon dioxide in flue gas, and a spray absorption test system and method. Background technique [0002] Global warming and the greenhouse effect are major challenges to the sustainable development of countries all over the world. Carbon dioxide is the main greenhouse gas, and its contribution to the greenhouse effect is greater than 60%. Therefore, the research on carbon dioxide emission reduction is very important. Flue gas from power plants burning fossil fuels is a major source of carbon dioxide, especially in China, so low or zero emissions are the key to reducing carbon dioxide emissions. At present, commonly used carbon capture and storage (CCS) technologies mainly include pre-combustion capture, oxyfuel combustion, chemical looping combustion and post-combustion capture. Post-combustion capture technolo...

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Problems solved by technology

The disadvantage is that the existing research only focuses on the strengthening of the injection device for the local process, resulting in high cost of the reaction tower system containing the injection device (device)

[0007] Due to the above-mentioned defects, the existing carbon dioxide capture systems of power plants still have a lot of room for development in terms of optimal design, energy saving and consumption reduction, and performance enhancement, and have not yet achieved the goals of low energy consumption, low cost and high efficiency.

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