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Treatment and resource-utilizing technology of tert-butyl peroxy benzoate production wastewater

A technology for the production of tert-butyl peroxybenzoate and waste water, which is applied in the directions of sulfur trioxide/sulfuric acid, water/sewage multi-stage treatment, water/sludge/sewage treatment, etc., and can solve the problems of high concentration of organic peroxide waste water, Resources are not recycled, have no effect, etc., to achieve the effect of resource utilization, saving processing costs, and easy operation

Inactive Publication Date: 2012-07-04
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

[0025] The treatment and resource utilization process of the waste water produced by tert-butyl peroxybenzoate (initiator C) of the present invention will be described in detail below through specific examples.

[0026] (1) Treatment of waste acid produced from tert-butyl peroxybenzoate

[0027] Collect 11.5 liters of waste acid produced from tert-butyl peroxybenzoate from the outfall of the production unit. Which contains sulfuric acid> 40%, COD cr =83460.96mg / L.

[0028] Add 12 grams of sodium sulfite to the waste acid (add 1 gram of sodium sulfite per liter of waste water), slowly heat to 50~60°C, stir for 1.5~2.0 hours, then distill under normal pressure, the distillate is condensed, cooled to room temperature, and separated into layers, the upper layer is organic phase, and the lower layer is the aqueous phase. The organic phase of the upper layer was recovered, and 900ml of a mixture of tert-butanol and tert-butyl peroxide was obtained after distillation and dehydrati...

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Abstract

The invention discloses a treatment and resource-utilizing technology of the production wastewater of tert-butyl peroxy benzoate (initiator is C). The technology is as follows: high concentration production wastewater is collected from the sewage outlet of a production device to perform stabilization treatment, and after the risk that the organic peroxide in wastewater is violently decomposed when heated is basically eliminated, the mixture of tertiary butanol and tert-butyl peroxide, sulfuric acid, benzoic acid and sodium chloride are recycled from wastewater. the mixture of tertiary butanoland tert-butyl peroxide, benzoic acid and sulfuric acid can be used repeatedly in production and sodium chloride is a by-product. After most of tertiary butanol and tert-butyl peroxide are removed and benzoic acid, sulfuric acid and sodium chloride are recycled, the wastewater performs hydrolysis-contact oxidation and C-Fe micro-electrolysis decoloring treatment and the main indexes of dischargedwater meet the requirements of the discharge standard of water pollutants for pharmaceutical industry chemical synthesis products category (GB21904-2008) on the water pollutants emission limits of new business.

Description

technical field [0001] The invention belongs to the technical field of industrial wastewater treatment, and relates to a process for treating and recycling organic peroxide production wastewater, in particular to a process for treating and recycling wastewater produced with initiator tert-butyl peroxybenzoate. Background technique [0002] Tert-butyl peroxybenzoate (initiator C) is one of the commonly used varieties of organic peroxide initiators. It is widely used as an initiator in the polymerization of ethylene, styrene, propylene, vinyl acetate, diallyl phthalate and isobutylene. In the curing process of unsaturated polyester, it is widely used in molding processes such as SMC, BMC, DMC pultrusion, etc. At the same time, it can also be used with some more active two-component curing systems such as MEPK, BPO or TBPO. . [0003] The production process of tert-butyl peroxybenzoate (initiator C) is carried out intermittently, and the quality and quantity of wastewater, or...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C02F9/14C07C63/06C07C51/02C01B17/74C01B17/88C01B17/90C01D3/04C01D3/14
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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