Flue gas washing method and catalytic cracking method

Abstract

The invention relates to a flue gas washing method and a catalytic cracking method. The flue gas washing method includes: guiding flue gas into a flue gas washing tower to contact with absorbing liquid containing an absorber, and enabling the flue gas after contacting with the absorbing liquid to contact with clean water before going out of the tower. The flue gas washing method is simple and easyto implement, flue gas tailing of the wet-process washing tower can be eliminated effectively, and the problem that blue smoke and smoke plume sink is solved.

Description

technical field [0001] The present disclosure relates to a flue gas scrubbing method and a catalytic cracking method. Background technique [0002] In the industrial production process, especially in some production processes containing heat treatment steps (drying, roasting, burning, etc.), waste gases such as tail gas or flue gas containing pollutants will be produced. For example, in the catalytic cracking (FCC) process, part of the sulfur and nitrogen compounds in the raw material enter the coke during the riser reaction process and deposit on the spent catalyst. , Nitrogen compounds are oxidized to produce SO x , NO x and other smoke pollutants. For another example, in inorganic chemical processes such as catalyst production, sulfuric acid salts, nitrate salts, and chloride salts contained in raw materials will produce SO x , NO x , Cl 2 , HCl and other pollutants and harmful gas exhaust. The flue gas and tail gas containing pollutants and harmful gases need to b...

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Problems solved by technology

[0005] The purpose of this disclosure is to provide a flue gas scrubbing method and a catalytic cracking method to solve the flue gas tailing and sinking problems of existing and new wet scrubbing systems, and reduce adverse effects on the factory area and surrounding production and living environments

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