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Device for extracting poly-nitrotoluene from acidic wastewater

A technology of acidic wastewater and nitrotoluene, applied in the preparation of organic compounds, chemical instruments and methods, organic chemistry, etc., can solve problems such as manual cleaning and danger

Pending Publication Date: 2019-02-12
HUBEI DONGFANG CHEM IND
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

For the solid form of dinitrotoluene and its derivatives in the sedimentation tank, manual cleaning is required, and the cleaning operation has certain dangers

Method used

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  • Device for extracting poly-nitrotoluene from acidic wastewater
  • Device for extracting poly-nitrotoluene from acidic wastewater
  • Device for extracting poly-nitrotoluene from acidic wastewater

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Embodiment Construction

[0037] The present invention will be described in further detail below in conjunction with specific drawings and embodiments, and the implementation scope of the present invention is not limited thereto.

[0038] Such as figure 1 , figure 2 , image 3 , Figure 4 As shown, a device for extracting polynitrotoluene from acidic wastewater in this embodiment includes cooler A1, cooler B2, separator A3, separator B4, collection tank 5, delivery pump 6, and the delivery pump 6 The output end of the cooler A1 is communicated with the inlet end of the cooler A1, the outlet end of the cooler A1 is communicated with the inlet end of the cooler B2, the outlet end of the cooler B2 is communicated with the inlet end of the separator A3, and the separator A3 is provided with a nitrate outlet port A31, an acidic water outlet port 32, and the separator B4 is provided with a clarified acidic water outlet port 41, a nitrate outlet port B42, and an emulsified acidic water outlet port 43, and...

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Abstract

The invention relates to the technical field of nitrotoluene preparation, in particular to a device for extracting poly-nitrotoluene from acidic wastewater. The device comprises a cooler A, a cooler B, a separator A, a separator B, a collecting tank and a conveying pump; mononitrotoluene, the acidic wastewater, a mixed nitrated compound in the collecting tank and refluent emulsified acidic water are mixed and conveyed to the coolers through the conveying pump to be cooled; then liquid is primarily separated to obtain a mixed nitrated compound and acidic water; the acidic water is secondarily separated to obtain a mixed nitrated compound, clear acidic water and emulsified acidic water; the clear acidic water flows into a wastewater treatment system to be treated; the emulsified acidic waterflows back to be conveyed to the conveying pump; the mixed nitrated compounds obtained by primary separation and secondary separation are stored in the collecting tank; and parts of the mixed nitrated compounds are conveyed to the conveying pump, and the other mixed nitrated compounds are extracted poly-nitrotoluene products. The device is scientific in structure, safe and convenient, and the content of nitro-compounds in the wastewater is decreased.

Description

technical field [0001] The invention relates to the technical field of nitrotoluene preparation, in particular to a device for extracting polynitrotoluene from acidic wastewater. Background technique [0002] Nitrotoluene is one of the ingredients of commonly used explosives. Explosive companies produce a large amount of acidic wastewater containing nitrotoluene and sulfuric acid in the daily nitration production. The nitrotoluene compounds include mononitrotoluene, dinitrotoluene, and trinitrotoluene. , dinitrotoluene and trinitrotoluene are high in content, and all three are toxic and difficult to biodegrade, so they have certain difficulties in wastewater treatment. [0003] At present, the main domestic nitrotoluene wastewater treatment methods include chlorine dioxide oxidation and catalytic oxidation, micro-electrolysis, oxidation, anaerobic, aerobic biochemical treatment, incineration treatment, and vacuum concentration treatment. Among them, QVF vacuum concentration ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C07C201/16C07C205/06
CPCC07C201/16C07C205/06
Inventor 朱学明沈鹏陈云殷安梅王想清
Owner HUBEI DONGFANG CHEM IND
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