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Production method for dicumyl peroxide (DCP)

A technology for the production of dicumyl peroxide and dicumyl peroxide, which is applied to the preparation of peroxide compounds, chemical instruments and methods, and the preparation of organic compounds, and can solve the problem of low DCP selectivity and difficulty in large-scale industrial application , huge fluctuations in process parameters, etc.

Active Publication Date: 2015-08-26
SINOPEC SHANGHAI ENG +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] The technical problem to be solved by the present invention is the problems of low DCP selectivity, low product yield, huge fluctuation of process parameters and difficulty in large-scale industrial application in the prior art, and a new method for producing dicumyl peroxide is provided

Method used

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  • Production method for dicumyl peroxide (DCP)
  • Production method for dicumyl peroxide (DCP)
  • Production method for dicumyl peroxide (DCP)

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] in such as figure 1In the process flow shown, the cumene raw material first enters the cumene pH regulator for pretreatment, and the air also enters the air pH regulator for pretreatment; the pretreated cumene material and the pretreated air enter respectively In the cumene oxidation reactor, the cumene material and air are in the form of bubbling in the cumene oxidation reactor for gas-liquid two-phase contact, and the cumene material undergoes an oxidation reaction to generate cumene hydroperoxide CHP After the material enters the CHP refining tower for concentration and refining treatment; the refined CHP material is divided into two routes, and one route of CHP material and high-efficiency reducing agent enters the CHP reduction reactor together. Under the action of the high-efficiency reducing agent, the CHP material undergoes a reduction reaction Dimethyl benzyl alcohol CA material is generated, and then the crude CA material enters the CA refining tower for conce...

Embodiment 2

[0037] According to the conditions and steps described in Example 1, the production scale of the commercial process unit was changed to 2000 tons / year. Using cumene pH regulator and air pH regulator, the pH value of cumene raw material and air is controlled at 8.5, the flow ratio of fresh cumene and return circulating cumene is 1:1.5, and the ratio of high-efficiency reducing agent Be 80% potassium sulfide+20% sodium hydrogen sulfide, the proportioning of efficient acid catalyst is 85% perchloric acid+10% sulfuric acid+5% basic ionic liquid; The operation condition of cumene oxidation reactor is: reaction temperature is 105°C, the reaction pressure is 0.45MPaG; the operating conditions of the CHP reduction reactor are: the reaction temperature is 68°C, the reaction pressure is 0.004MPaG; the operating conditions of the CHP refining tower are: the operating temperature is 105°C, and the operating pressure is -0.093MPaG The operating conditions of the CA refining tower are: the ...

Embodiment 3

[0040] According to the conditions and steps described in Example 1, the production scale of the commercial process unit was changed to 20,000 tons / year. Using cumene pH regulator and air pH regulator, the pH value of cumene raw material and air is controlled at 8.5, the flow ratio of fresh cumene and return circulating cumene is 1:1.5, and the ratio of high-efficiency reducing agent It is 80% sodium sulfide+20% sodium hydrogen sulfide, and the proportioning ratio of high-efficiency acid catalyst is 85% perchloric acid+10% phosphoric acid+5% alkaline ionic liquid; the operating condition of the cumene oxidation reactor is: the reaction temperature is 105°C, the reaction pressure is 0.45MPaG; the operating conditions of the CHP reduction reactor are: the reaction temperature is 68°C, the reaction pressure is 0.004MPaG; the operating conditions of the CHP refining tower are: the operating temperature is 105°C, and the operating pressure is -0.093MPaG The operating conditions of ...

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Abstract

The invention relates to a production method for DCP. The production method mainly overcomes the problems of low DCP selectivity, low product yield, great fluctuation of technological parameters and difficulty in large-scale industrial application in the prior art. According to the production method for DCP, a raw material isopropyl benzene and air respectively enter an isopropyl benzene pH adjuster and an air pH adjuster for pretreatment and then enter an isopropyl benzene oxidation reactor to produce cumyl hydroperoxide (CHP) material which enters a CHP refining tower; one path of the refined CHP material and a reducing agent enter a CHP reduction reactor to produce a CA material which enters a CA refining tower; a refined CA material separated from the bottom of the CA refining tower, the other path of the refined CHP material and an acid catalyst enter a condensation reactor together to produce a material containing DCP. Thus, the production method for DCP perfectly overcomes the above-mentioned problems and can be used for production of DCP.

Description

technical field [0001] The present invention relates to a kind of method of producing dicumyl peroxide DCP. Background technique [0002] Dicumyl peroxide DCP is an excellent polymerization initiator, vulcanizing agent for rubber products, foaming agent and curing agent for polymers, and crosslinking agent for copolymers. Among them, after the cross-linking of DCP, the heat resistance, chemical resistance, pressure resistance, crack resistance and mechanical strength of the polymer are all improved, so DCP is widely used in shoemaking, wire and cable, building materials and other industries , and the demand is growing at a rate of more than 5% per year. At the same time, the application fields of DCP are also continuously expanding, and the demand for DCP is also increasing in industries such as coatings, paints, rubber, and plastics. [0003] Patent application number 201110059672.6 designed a method for the preparation of raw materials for the production of dicumyl perox...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C07C409/16C07C407/00
Inventor 李真泽何琨杨建平张斌徐尔玲
Owner SINOPEC SHANGHAI ENG