Device for processing dimethylamine exhaust gas and wastewater

Abstract

The invention discloses a device for processing dimethylamine exhaust gas and wastewater. A fan is respectively connected with a plurality of shower nozzles on the bottoms of a plurality of blowing oxidation cans; the bottom of each blowing oxidation can is externally connected with a water pump; the water pump is connected with an atomizing shower nozzle arranged in a spray tower on the upper part; the lower part of the blowing oxidation can is a dimethylamine solution cavity; the dimethylamine solution is discharged from the outlet on the top of the blowing oxidation can after being blown off by air; after the dimethylamine solution is cooled by a condenser and separated by a moisture separator, mixed gas enters a low-temperature plasma purifier to carry out purification and deodorization; and the purified air is discharged from a chimney via an induced draft fan. The device has the advantages that removal effect is above 90%, and the content of the discharged dimethylamine exhaust gas is low, thereby saving energy, reducing emission, and causing low energy consumption.

Description

technical field [0001] The invention relates to a waste gas and waste water treatment device, in particular to a dimethylamine waste gas and waste water treatment device. Background technique [0002] Synthetic leather is also known as artificial leather. In the production process, dimethylformamide DMF is widely used as a solvent in the surface treatment of synthetic leather and the wet transfer film surface treatment process of two-layer leather. Since DMF is only used as a carrier solvent without chemical reaction, all of which enter the production wastewater. Most of the rectification methods are currently used to recover DMF, but in the recovery process, DMF will react with water to generate dimethylamine and formic acid. In addition, DMF itself will decompose at high temperature to generate dimethylamine and carbon monoxide. Dimethylamine has a low boiling point, is volatile, easily soluble in water, and has a strong stench. At present, domestic synthetic leather en...

AI Technical Summary

Problems solved by technology

At present, domestic synthetic leather enterprises basically do not treat dimethylamine, and directly discharge it into the atmosphere, causing environmental pollution

Even if it is treated, the dimethylamine gas is condensed and sent to the boiler for combustion, but the equipment, technology and process are immature and cannot meet the requirements of environmental protection. There is a problem of its transfer to another form of pollutant, which also causes deteriorating air quality

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