Chlorohydrocarbon waste liquid treating method

Abstract

The present invention relates to a chloro hydrocarbon waste liquid treatment method, which comprises the procedures of distillation, incineration, etc,. By adopting a neutralizer to neutralize and a decompress dry distillation technology, the gas phase of the waste liquid breaks away by an organic matter fashion which can be directly incinerated, while the solid phase of the waste liquid is landfilled in a solid waste landfill. The technology of the present invention is capable of effectively solve the problem of waste liquor recovery and discharge, and realizing the innocent treatment of waste liquid; besides, the technology is adapted to the construction of industrialization apparatus and solves the domestic bottleneck problem of freon substitute.

Description

technical field [0001] The invention relates to a treatment method for chlorinated hydrocarbon waste liquid, in particular to a treatment method for waste liquid in the production of pentachloropropane and hexachloropropane. Background technique [0002] 1,1,1,3,3-pentachloropropane (HCC-240), 1,1,1,3,3,3-hexachloropropane (HCC-230) is the production of freon substitute pentafluoropropane (HFC- 245fa) and hexafluoropropane (HFC-236fa), a certain amount of waste liquid will be produced during the rectification of HCC-230 and HCC-240. The main components are chlorinated hydrocarbons, which are slightly acidic and have strong Odor, HCC-230, HCC-240 and other waste liquids are very harmful to the human body and the environment. They cannot be discharged directly and must be treated. However, because the waste liquid contains a certain amount of solid impurities, the physical properties are very viscous. Can not carry out conventional incineration treatment again. [0003] Ther...

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Problems solved by technology

[0002] 1,1,1,3,3-pentachloropropane (HCC-240), 1,1,1,3,3,3-hexachloropropane (HCC-230) is the production of freon substitute pentafluoropropane (HFC- 245fa) and hexafluoropropane (HFC-236fa), a certain amount of waste liquid will be produced during the rectification of HCC-230 and HCC-240. The main components are chlorinated hydrocarbons, which are slightly acidic and have strong Odor, HCC-230, HCC-240 and other waste liquids are very harmful to the human body and the environment. They cannot be discharged directly and must be treated. However, because the waste liquid contains a certain amount of solid impurities, the physical properties are very viscous. Cannot be processed by conventional incineration

[0003] There are no patent declarations, documents, etc. about HCC-230 and HCC-240 waste liquid treatment aspects through patent and open literature retrieval. There is no good treatment method for this type of waste liquid at home and abroad. As US Patent No. 5,792,893 only introduces Components are separated and recycled, and there is no mention of how to deal with heavy components that cannot be recycled

[0004] At present, most units of the above-mentioned waste liquid are mainly directly landfilled, resulting in waste of resources and environmental pollution.

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