Process for treating and recycling di-tertiary-butyl peroxide production waste water

A technology of di-tert-butyl peroxide and waste water production, which is applied in the directions of alkali metal oxide/hydroxide, water/sewage multi-stage treatment, water/sludge/sewage treatment, etc.

Inactive Publication Date: 2012-07-04
NORTHWEST NORMAL UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Di-tert-butyl peroxide is thermally unstable, and it is easy to accelerate decomposition and cause an explosion; di-tert-butyl peroxide dissolved in waste water also decomposes rapidly at high temperature, and there are also potential safety hazards
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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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] (1) Treatment of strong acid wastewater

[0026] Collect 12 liters of waste acid produced by tert-butyl peroxide from the blowdown outlet of the production unit. Which contains sulfuric acid> 40%, COD cr =83460.96mg / L.

[0027] Add 12 grams of sodium sulfite to the waste acid (1 gram of sodium sulfite per liter of waste water), slowly heat to 70°C, stir for 1.5 hours and then distill under normal pressure. phase, and the lower layer is the aqueous phase. The organic phase of the upper layer was recovered, and 1000ml of a mixture of tert-butanol and tert-butyl peroxide was obtained after distillation and dehydration by heterogeneous phase separation technology. The total content was 92.21% through gas chromatography analysis, which could be reused in production. The aqueous phase was refluxed. When the distillate has no stratification at room temperature, continue to distill to separate low-concentration acidic wastewater. The collected low-concentration acidic wast...

Embodiment 2

[0034] (1) Treatment of strong acid wastewater

[0035] With embodiment 1.

[0036] (2) Treatment of di-tert-butyl peroxide alkaline washing wastewater

[0037] Get 23 liters of di-tert-butyl peroxide alkali washing wastewater from the blowdown outlet of the production unit. of which COD cr =5288.16mg / L, containing 13.92% non-volatile solids, pale yellow and turbid.

[0038] Heat di-tert-butyl peroxide alkaline washing wastewater to 70°C, add 23 grams of sodium sulfide (1 gram of sodium sulfide per liter of waste liquid) and stir to generate gas and flocculent precipitates, and filter out flocculent precipitates. The filtrate is distilled under reduced pressure by the water circulation pump to produce low-concentration alkaline wastewater, the pH value of low-concentration alkaline wastewater is 9-10, COD cr =1635.00mg / L, CODcr removal rate 69.01%. After the low-concentration wastewater is neutralized to pH = 7-8, it is discharged after hydrolysis-contact oxidation and 3...

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Abstract

The invention discloses a process for treating and recycling di-tertiary-butyl peroxide (initiator A) production waste water. The process comprises the following steps of: performing stabilization treatment on the production waste water collected at the drain outlet of a production device to basically remove the risk of heating violent decomposition of organic peroxides in the waste water, and then separating and reclaiming tertiary butanol-tertiary butyl peroxide mixture, concentrated sulfuric acid and liquid sodium hydroxide from the waste water. The reclaimed products can be reused in the production. The process realizes reclamation and recycle of pollutants in the di-tertiary-butyl peroxide production waste water. The organic substance, sulfuric acid and sodium hydroxide reclaimed waste water is subjected to hydrolysis-contact oxidation treatment, and the main indexes of the discharge water meet the requirements of Chemical Synthetic Pharmaceutical Industrial Water Pollutant Discharge Standards (GB21904-2008) on newly built enterprise water pollutant discharge limits.

Description

technical field [0001] The invention belongs to the technical field of industrial wastewater treatment, and relates to a waste water treatment and recycling process for organic peroxide initiator production, in particular to a waste water treatment and resource recycling process for initiator di-tert-butyl peroxide production. Background technique [0002] Di-tert-butyl peroxide (initiator A) is one of the most stable and commonly used varieties of organic peroxide initiators. As a crosslinking agent, it can be used in silicone rubber, synthetic rubber and natural rubber, polyethylene, EVA and EPT, etc. As a polymerization initiator, it can be used for polystyrene and polyethylene. It is also an additive for printing and dyeing, grease and food bleach, diesel oil and lubricating oil, and a pour point depressant for transformers. [0003] The production process of di-tert-butyl peroxide (initiator A) is carried out intermittently, and the quality and quantity of wastewater,...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C02F9/14C01D1/28C01B17/90
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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