Adsorption acetone recovery system and recovery method using atmospheric pressure analysis in shoemaking industry

Abstract

The invention discloses a normal pressure analyzing adsorption type acetone recovery system and method of the shoemaking industry. The normal pressure analyzing adsorption type acetone recovery system comprises an acetone gas compression device, an adsorption device, a refrigerator and an acetone liquid storage tank. Acetone gases are compressed to be in the medium pressure state through the compression device and then enter the adsorption device to be adsorbed; after saturation adsorption, the acetone gases are reduced to the normal pressure to be desorbed; the analyzed concentrated acetone gases enter an evaporator of the refrigerator to be cooled and liquefied, and the liquefied acetone gases enter the acetone liquid storage tank to be recovered. The normal pressure analyzing adsorption type acetone recovery system and method solve the problem that the common vacuum pressure swing adsorption acetone recovery devices are low in desorption efficiency or the vacuum pump is high in failure rate which influences use, do not adopt the vacuum pressure swing adsorption system, use a screw type booster compressor to replace the complex vacuum pump, so desorption can be finished at normal pressure, the desorption efficiency is improved greatly, the system cost and failure rate are reduced greatly, and further the efficient, safe and reliable acetone recovery system is provided.

Description

technical field [0001] The invention relates to an adsorption type acetone recovery system and recovery method used for normal pressure analysis in the polyurethane adhesive shoemaking industry, and belongs to the technical field of adsorption type acetone recovery. Background technique [0002] Volatile organic compounds (VOCs) in the shoe industry mainly come from the use of solvent-containing products such as shoe adhesives and treatment agents, and are mainly concentrated in the middle of the molding process. Water-based adhesives can significantly reduce the content of VOCs, but the penetration rate is low. The commonly used oil-based adhesives are the main source of VOCs in the shoe industry. For example, polyurethane adhesives use a large amount of acetone, resulting in a large amount of organic waste emissions such as acetone. Commonly used acetone treatment methods mainly include: catalytic oxidation method, adsorption method, membrane separation method, condensatio...

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Problems solved by technology

[0003] Purpose of the invention: In view of the problem that the desorption efficiency of the vacuum pressure swing adsorption acetone recovery equipment commonly used in the polyurethane adhesive shoemaking industry is not high or the failure rate of the vacuum pump is high, which affects the use, the present invention proposes a new type of adsorption acetone with normal pressure analysis Recovery system and recovery method to improve desorption efficiency and reliability of system operation

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