Treating method of high-ammonia-nitrogen mother liquor wastewater in MCP (methyl cyclopentenolone) production

A kind of methylcyclopentenol ketone, treatment method technology, applied in water/sewage multi-stage treatment, water/sludge/sewage treatment, chemical instruments and methods and other directions

Inactive Publication Date: 2014-12-10
ANHUI JINGHE IND
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  • Abstract
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  • Claims
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Problems solved by technology

[0003] The purpose of the present invention is to solve the problem of high ammonia nitrogen mother liquor wastewater treatment in the production of methylcyc...

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  • Treating method of high-ammonia-nitrogen mother liquor wastewater in MCP (methyl cyclopentenolone) production

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Embodiment 1

[0015] A treatment method for high ammonia nitrogen mother liquor wastewater in the production of methylcyclopentenolone (MCP), characterized in that it comprises the following steps:

[0016] a. Send the high ammonia nitrogen mother liquor produced by the production station into the mother liquor tank for metering, and the volume of the mother liquor is 1m 3 , use the mother liquid pump to pump into the extraction kettle, add 250L of extractant (chloroform), stir for 30 minutes, let stand for 3 hours, separate the layers, and separate the aqueous phase and the organic phase;

[0017] b. Pump the organic phase into the distillation pot for vacuum distillation, keep the pressure at -0.092-0.096MPa, and keep the temperature at 40-45°C to recover the extractant. The distilled extractant (chloroform) is condensed and then put into the recovery tank It can be recycled, and the residue is further extracted and utilized;

[0018] c. Add 150L of mother liquor to the distillation...

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Abstract

The invention provides a treating method of high-ammonia-nitrogen mother liquor wastewater in MCP (methyl cyclopentenolone) production. A water phase and an organic phase are separated from high-ammonia-nitrogen mother liquor through an extraction agent; the extraction agent can be recycled and MCP can be recovered through distillation and condensation of the organic phase; dimethylamine hydrochloride can be recovered and continuously put into production for use through decolorization and distillation crystallization treatment of the water phase, and steam used for distillation is waste heat tail gas. With the adoption of the method, MCP crude products can be effectively recovered, meanwhile, the waste heat tail gas is used for evaporating the wastewater, and the dimethylamine hydrochloride is recovered, so that multiple effects of cleanness, environmental pollution and recycling of resources are realized.

Description

technical field [0001] The invention relates to a treatment method for high ammonia nitrogen mother liquor wastewater in the production of methylcyclopentenolone. Background technique [0002] Methylcyclopentenolone is a kind of food spice, but a large amount of high-salt and high-ammonia-nitrogen wastewater will be produced in the production. At present, the treatment of high-salt and high-ammonia-nitrogen wastewater is a worldwide problem. Most of the current sewage treatment plants adopt the biological treatment method after dilution. It is far from meeting the needs of chemical industry production. Another method is evaporation treatment, which can meet the needs of a certain scale of chemical production, but the energy consumption in the process is too high, the cost is too high, and the waste residue produced is also difficult to handle, causing secondary pollution. Contents of the invention [0003] The purpose of the present invention is to solve the problem of t...

Claims

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Application Information

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IPC IPC(8): C02F9/10C07C49/707C07C45/78C07C209/86C07C211/04
Inventor 程光锦赵金刚郑学连
Owner ANHUI JINGHE IND
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