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Di-(2-hydroxyl isopropyl) benzene production method

A technology of hydroxyisopropyl and isopropyl, which is applied in the production of di-benzene, can solve the problems of high consumption of public works and long process flow, and achieve the effects of reducing consumption, simplifying process flow, and good technical effects

Active Publication Date: 2013-02-06
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The technical problem to be solved by the present invention is that the prior art has the problems of long process flow and high consumption of public works, and a new method for producing bis-(2-hydroxyisopropyl)benzene is provided

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0011] With the dicumyl oxidized solution containing 15.33% by weight of two-(isopropyl hydroperoxide)benzene DHP as raw material, at a reaction temperature of 180°C and a reaction pressure of 0.8MPa, two-(isopropyl hydroperoxide) Benzene is reacted with a reducing agent to obtain bis-(2-hydroxyisopropyl)benzene; wherein, the weight ratio of bis-(hydroperoxide isopropyl)benzene to reducing agent sodium thiosulfate is 10:7.

[0012] The public works consumption is: chilled water consumption 40 tons / ton DC, circulating water consumption 280 tons / ton DC, steam consumption 3.1 tons / ton DC, power consumption 375kWh / ton DC.

Embodiment 2

[0014] With [embodiment 1], just reducing agent is potassium sulfide, and the weight ratio of bis-(isopropyl hydroperoxide) benzene and potassium sulfide is 10:8.

[0015] The public works consumption is: chilled water consumption 39 tons / ton DC, circulating water consumption 275 tons / ton DC, steam consumption 3.0 tons / ton DC, power consumption 365kWh / ton DC.

Embodiment 3

[0017] With [embodiment 1], only reaction temperature 120 ℃, reaction pressure 0.7MPa.

[0018] The public works consumption is: chilled water consumption 41 tons / ton DC, circulating water consumption 287 tons / ton DC, steam consumption 3.2 tons / ton DC, power consumption 388kWh / ton DC.

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PUM

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Abstract

The invention relates to a di-(2-hydroxyl isopropyl) benzene production method which mainly solves the problems of long technical process and excessive public project consumption in the prior art. The technical scheme for better solving the problems includes that diisopropylbenzene oxidant solution containing di-(hydrogen peroxide isopropyl) benzene is used as a raw material to obtain the di-(2-hydroxyl isopropyl) benzene by means of reaction of the di-(hydrogen peroxide isopropyl) benzene and reducing agent, wherein the reaction temperature is 40-200 DEG C, the reaction pressure is 0.2-1.0MPa, the reducing agent is selected from at least one of sodium thiosulfate , potassium thiosulfate, potassium sulfide, potassium hydrosulfide, sodium sulfide or sodium hydrosulfide, and the weight ratio of the di-(hydrogen peroxide isopropyl) benzene to the reducing agent is (1-30):(1-20). The di-(2-hydroxyl isopropyl) benzene production method can be used for industrial production of di-(2-hydroxyl isopropyl) benzene.

Description

technical field [0001] The present invention relates to a method for producing bis-(2-hydroxyisopropyl)benzene. Background technique [0002] Bis-(2-hydroxyisopropyl)benzene (DC) is an intermediate product in the production of bis-(tert-butylperoxyisopropyl)benzene (BIPB). The document US7557252 "Process for Producing Dihydroxybenzene and Diisopropylbenzenedicarbinol" discloses that the diisopropylbenzene oxidation solution containing bis-(isopropylhydroperoxide)benzene (DHP) is used as a raw material, and the bis-( Hydroperoxide isopropyl) benzene, and then carry out decomposition reaction, then carry out hydrogenation reduction reaction, and finally obtain bis-(2-hydroxyisopropyl) benzene by crystallization in methyl isobutyl ketone. [0003] However, the process for preparing bis-(2-hydroxyisopropyl)benzene in the above-mentioned documents adopts four unit operation steps of extraction, decomposition, reduction, and crystallization, which have the problems of long proces...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C07C33/26C07C29/132
Inventor 张斌郑晓栋杨建平顾诚彪包志良
Owner CHINA PETROLEUM & CHEM CORP
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