Spray paint organic solvent exhaust gas recovery device and organic solvent recovery method

Abstract

The invention discloses a spray paint organic solvent exhaust gas recovery device and a method for recovering an organic solvent by the use of the device. The device provided by the invention comprises a paint mist removal device, a blower fan, an adsorption pot, a condenser and an oil-water separator which are connected in order. The paint mist removal device comprises an air collector which is used for temporary storage of organic solvent exhaust gas, a cyclone dust collector and a cloth bag deduster. The air collector, the cyclone dust collector and the cloth bag deduster are connected in order. According to the recovery device, parts are connected reasonably and compactly, dedusting efficiency is high, paint mist is efficiently removed, and the trouble of frequently replacing filter cotton is saved. The invention also discloses a method for recovering the organic solvent by the use of the device. The method successively comprises steps of: removal of the paint mist, adsorption, water vapour desorption, condensation and oil-water separation, wherein the paint mist removal step is to change the paint mist into a paint powder and effectively remove the paint powder. In comparison with the present technologies, the method provided by the invention is more reasonable and compact and is labor-saving.

Description

technical field [0001] The invention relates to the technical field of recovery of waste gas from spray paint organic solvents, in particular to a device for recovery of waste gas from paint spray organic solvents and a method for recovering organic solvents using the device. Background technique [0002] The painting process is widely used in machinery, electrical equipment, home appliances, automobiles, ships, furniture and other industries. Raw materials for spray paint—the coating is composed of non-volatile and volatile components. The non-volatile components include film-forming substances and auxiliary film-forming substances. The volatile components refer to curing agents and diluents. And the added liquid substance with good miscibility with the resin, the addition of curing agent is to promote the rapid drying of the paint, increase the adhesion and strength of the paint surface, and improve the chemical stability of the paint. Paint spray exhaust gas is mainly co...

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Problems solved by technology

[0005] The present invention provides an organic solvent exhaust gas recovery device, the purpose of which is to overcome the low efficiency of demisting, premature failure of activated carbon and the need for frequent replacement in the prior art Defects such as filter cotton

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