Efficient organic recovered solvent purification device and process

Abstract

The invention discloses an efficient organic recovered solvent purification device and process.A feed pump and a feed liquid flow meter are arranged at a feed port of a mixing reactor, a liquid outlet of the mixing reactor is communicated with a pipeline and a reaction mixture circulating pump, the other end of the pipeline is communicated with a feed port of a rotary liquid separator, a reaction opening is formed in the top of the mixing reactor, a three-way valve is arranged at the reaction opening, one channel is an empty channel, and another channel is communicated with a heavy phase circulating liquid outlet of the rotary liquid separator.A pH monitoring instrument is arranged at the heavy phase circulating liquid outlet, a rotary liquid separator light phase outlet is formed in the top of the rotary liquid separator and communicated with an online drying agent replacing device, a liquid removal three-way valve is arranged on the liquid removal pipeline, one channel is a liquid outlet of a de-rectification pipeline, and another channel is communicated with the feed port of the mixing reactor through a pipeline.The device and process are compact in structure, small in size, reasonable in layout, convenient to maintain, efficient and safe.

Description

Technical field: [0001] The invention relates to the technical field of volatile organic compound (VOCs) waste gas treatment and the technical field of chemical organic solvent separation equipment, in particular to a high-efficiency organic recovery solvent purification device and process. Background technique: [0002] Volatile organic compounds (VOCs) are a common type of air pollutants, mainly from petrochemical, printing, electroplating, mining and textile industries. Volatile organic gases have caused great harm to the environment, the growth of animals and plants, and human health. Therefore, they have attracted more and more attention from all over the world. Many countries have promulgated and implemented relevant laws and regulations to limit the emission of VOCs. The treatment of VOCs has become a hot issue in environmental protection. In recent years, extensive and in-depth research has been conducted on this issue at home and abroad. [0003] At present, the ex...

AI Technical Summary

Problems solved by technology

However, most of the organic solvents recovered by these methods have problems such as odor, acidification, and discoloration, so that the recovered solvents cannot be directly recycled, resulting in a waste of resources

[0004] At present, there are relatively few studies on the treatment and reuse of VOCs recovery, and most of them use rectification fractionation or biological methods, but this method cannot completely solve the problems of discoloration, acidification and odor of recovery solvents

Patent CN204485848, utility model name "A device for decolorization, deodorization, deacidification and drying of organic solvents at normal temperature and pressure" discloses a device for recovering solvents for decolorization, decolorization, deodorization and drying, which can effectively purify and recover solvents, but the device is complicated , the treatment process is discontinuous, the treatment efficiency is not high enough, and the desiccant and purification liquid cannot be fully utilized, resulting in a waste of some resources

Images