Process for treating and recycling industrial wastewater of peroxide-2-ethylhexoic acid tertiary butyl ester

A technology for the production of tert-butyl caproate and waste water, which is applied in the fields of sulfur trioxide/sulfuric acid, water/sewage multi-stage treatment, water/sludge/sewage treatment, etc., and can solve the problem of high concentration of organic peroxide waste water and lack of resources. Recycling, no effect and other problems, to achieve the effect of protecting resources and the environment, saving treatment costs, and easy operation

Inactive Publication Date: 2011-06-15
NORTHWEST NORMAL UNIVERSITY
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AI Technical Summary

Problems solved by technology

[0007] The disadvantages of this treatment process are: the concentration of organic peroxide wastewater is high, the organic matter obtained by acidification and separation must be diluted with diesel oil and then incinerated, resources are not recovered, and the waste is serious
In addition, this treatment process is only suitable for the treatment of highly concentrated alkaline wastewater
Organic acid salts with high solubility in alkaline wastewater are converted into organic acids with relatively low solubility after acidification and separated, but have little effect on alcohols with high solubility, and the acidified wastewater still contains a large amount of organic matter

Method used

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Embodiment Construction

[0021] The process for the treatment and resource utilization of wastewater produced by tert-butyl peroxy-2-ethylhexanoate (initiator OT) of the present invention will be described in detail below through specific examples.

[0022] (1) Treatment of strong acid wastewater

[0023] Collect 13 liters of tert-butyl peroxide production waste acid from the blowdown outlet of the production unit. Among them, containing sulfuric acid> 41%, COD cr =84470.16mg / L.

[0024] Add 13 grams of sodium sulfite to the waste acid (1 gram of sodium sulfite per liter of waste water), slowly heat to 35~40°C, stir for 1.5~2.0 hours and then distill under normal pressure. The distillate was condensed and cooled to room temperature and separated into layers, the upper layer was the organic phase and the lower layer was the aqueous phase. Recover the organic phase of the upper layer, and obtain 800ml of a mixture of tert-butanol and tert-butyl peroxide after dehydration by heterogeneous phase separa...

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Abstract

The invention discloses a process for treating and recycling industrial wastewater of peroxide-2-ethylhexoic acid tertiary butyl ester (an initiator OT), belonging to the technical field of industrial wastewater treatment. In the process, the industrial wastewater of peroxide-2-ethylhexoic acid tertiary butyl ester is directly collected from a sewage draining port of a production device and is subjected to stabilization treatment so as to basically eliminate the risk that organic peroxides in the wastewater are heated and severely decomposed, and tertiary butanol-tertiary butyl peroxide mixtures, concentrated sulfuric acid, sodium hydroxide and sodium chloride, which are recyclable, are separated and recycled from the wastewater. The wastewater subjected to removal of most organic matters and recycling of sulfuric phosphate, caustic soda and sodium chloride is subjected to hydrolysis-contact oxidation treatment, and C-Fe is subjected to micro-electrolysis decoloration, so that main water discharge indexes meet the requirements in Discharge Standards of Water Pollutants for Pharmaceutical Industry of Chemical Synthesis Products Category (GB21904-2008) for discharge limits of water pollutants for new enterprises. Therefore, the treatment of the peroxide-2-ethylhexoic acid tertiary butyl ester and the recovering and recycling of pollutants in the wastewater are realized.

Description

technical field [0001] The invention belongs to the technical field of industrial wastewater treatment, and relates to a treatment method and resource utilization technology of organic peroxide production wastewater, in particular to a production wastewater of tert-butyl peroxy-2-ethylhexanoate (initiator OT) Treatment and resource utilization process. Background technique [0002] Tert-butyl peroxy-2-ethylhexanoate (initiator OT) is an organic peroxide initiator. It is used as a polymerization initiator for all vinyl monomers such as vinyl acetate, vinyl chloride, methacrylic acid, styrene, and ethylene. It can also be used as a thermoforming curing catalyst for unsaturated polyester resins. [0003] The production process of tert-butyl peroxy-2-ethylhexanoate (initiator OT) is carried out intermittently, and the quality and quantity of wastewater, organic matter concentration, pH, salt content, BOD / CDO value, etc. vary with the production scale and time, peak and valley ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F9/14C01D3/04C01D1/28C01B17/90
Inventor 胡昌秋胡冰牛克彦丛子晶胡生隆王建民张莉孙振洲刘建业
Owner NORTHWEST NORMAL UNIVERSITY
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