Process for purifying organic waste gas and reclaiming organic solvent

Abstract

The invention discloses a process for purifying organic waste gas and reclaiming an organic solvent, which comprises the following steps of: delivering the pre-treated waste gas containing the organic solvent to an active carbon fiber adsorption/desorption device to perform adsorption, desorption, dehumidification, temperature reduction, filling of inert gas and the like, reclaiming the organic solvent in the waste gas layer by layer to perform cyclic utilization, and discharging the purified waste gas reaching the standard. Compared with the prior art, the method has the advantages that: the process of filling the inert gas is added in the active carbon fiber adsorption/desorption process flow so as to remove oxygen in the active carbon fiber waste gas adsorption/desorption device, avoid explosive gas produced when a dried adsorber enters a next working cycle to perform adsorption and eliminate the potential safety hazards such as spontaneous combustion, flash explosion and the like of mixed gas of the organic solvent and the oxygen. Meanwhile, a part of waste water on the lower layer of a mixed solution demixing tank is introduced into a water washing tower of the pre-treatment process to serve as washing water so as to save the water resource.

Description

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AI Technical Summary

Benefits of technology

Technologies described are improvements for removing harmful substances (organics) from exhaust gases produced through various industrial methods such as thermal power plants or steel mills. These techniques involve adding nitrogen oxide-releasing agents called ammonia into the flue stream before it enters the stack after being treated. By replacing air with this agent, there will be fewer dangerous chemical compounds released due to ignition sources like coal burning fires. Additionally, these systems have simplified procedures compared to traditional treatments involving acid mist neutralization and scrubbing them afterwards. Overall, they improve environmental quality standards and reduce costs associated with pollution control measures.

Problems solved by technology

This patented technical problem addressed by these inventors relates to finding ways to safely recycle or dispose of harmful substances from industrial sources such as manure that may contain potentially dangerous chemical compounds like pesticides (pesticide) residues).

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