Efficient catalytic oxidation system based on adsorption and desorption coupling of double-circulating fluidized bed

Abstract

The invention discloses an efficient catalytic oxidation system based on adsorption and desorption coupling of a double-circulating fluidized bed. The system comprises a spiral feeder 1 used for adsorbing particle feed and a discharge outlet 13 used for adsorbing particle discharge. A double-circulating fluidized bed system for adsorption and desorption comprises an adsorption riser 2 for organicwaste gas, an adsorption cyclone separator 3, an adsorption return feeder 4, a desorption riser 5, a desorption cyclone separator 6 and a desorption return feeder 7. A system for catalytic oxidation of organic waste gas comprises a catalytic oxidation device 9 and an emptying valve 10, wherein the spiral feeder 1 is connected with the bottom of the adsorption riser 2, the top of the adsorption riser 2 is connected with the top of the adsorption cyclone separator 3, the bottom of the adsorption cyclone separator 3 is connected with the desorption riser 5 through the adsorption return feeder 4,the top of the desorption riser 5 is connected with the top of the desorption cyclone separator 6, and the bottom of the desorption cyclone separator 6 is connected with the spiral feeder 1 through the desorption return feeder 7.

Description

technical field [0001] The invention relates to a high-efficiency catalytic oxidation system and method based on double-circulation fluidized bed adsorption-desorption coupling, specifically improving the air volume of the catalytic device and the scope of application of the concentration of organic waste gas, reducing the investment cost of equipment, and improving the overall The heat recovery efficiency of the system is a system and method for reducing energy consumption during equipment operation. Background technique [0002] In the field of organic waste gas treatment, due to the complex gas components, the concentration of organic matter and the large changes in the air volume of the waste gas, it brings great challenges to the treatment technology of organic waste gas. Common organic waste gases include toluene, formaldehyde, ethyl acetate, and xylene. The catalytic oxidation device can realize the complete elimination of organic matter in the medium and low tempera...

AI Technical Summary

Problems solved by technology

The common one is the zeolite runner, but due to the high cost and the limited range of applicable air volume, its application is greatly restricted

[0003] In addition, there are currently some problems with the emission of organic waste gas with complex working conditions: (1) the existing treatment equipment is too expensive to be fully promoted; (2) for the emission scenarios of organic waste gas with a wide air volume range, the scope of application of traditional devices is difficult to ensure the removal of organic matter Efficient purification; (3) The cold start efficiency of the original equipment is low during operation

[0004] In view of the above problems, as well as the fact that the composition of the actual application scene is complex, and the air volume and concentration change greatly. Therefore, it is necessary to design the entire adsorption, desorption and catalytic process, and further reduce the initial investment cost and operation under the premise of ensuring safe operation. Low cost, realizing low-cost and efficient purification of organic waste gas under multiple working conditions

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