Production method of dicumyl peroxide

A technology of dicumyl peroxide and cumene hydroperoxide, which is applied in the chemical field, can solve problems such as low yield, low DCP selectivity, and huge fluctuations in process parameters, so as to shorten the production process, save production costs, The effect of reducing environmental pollution

Inactive Publication Date: 2017-11-24
江苏道明化学有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In the DCP production process, the traditional process technology has the problems of low DCP selectiv

Method used

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Examples

Experimental program
Comparison scheme
Effect test

specific Embodiment 1

[0017] A kind of production method of dicumyl peroxide, concrete operation is as follows:

[0018] (1) Raw material pretreatment: mix the raw material containing cumene and the lye in a mixer in a ratio of 1:0.9 by weight, and perform alkali washing. The temperature of the alkali washing is 20° C., and the time is 1 h. The pH value of cumene in the oxidation feed material obtained after the reaction is controlled at 6;

[0019] (2) generate cumene hydroperoxide: the processed cumene and air are delivered to oxidation tower together to generate cumene hydroperoxide CHP;

[0020] (3) Purification of cumene hydroperoxide: transport cumene hydroperoxide CHP to a special water washing tower with a pump, use water as a cleaning agent, and oxidize liquid as a cleaning medium for washing. Mixing at a weight ratio of 1.8:1 to remove water-soluble impurities doped in the oxidizing solution, the washing temperature is 22°C, and the washing time is 2h, to finally obtain the cumene hydrop...

specific Embodiment 2

[0024] A kind of production method of dicumyl peroxide, concrete operation is as follows:

[0025] (1) Raw material pretreatment: mix the raw material containing cumene and the lye in a mixer in a ratio of 1:1.1 by weight, and perform alkali washing. The temperature of the alkali washing is 28° C., and the time is 3 hours. The pH value of cumene in the oxidation feed material obtained after the reaction is controlled at 7;

[0026] (2) generate cumene hydroperoxide: the processed cumene and air are delivered to oxidation tower together to generate cumene hydroperoxide CHP;

[0027] (3) Purification of cumene hydroperoxide: transport cumene hydroperoxide CHP to a special water washing tower with a pump, use water as a cleaning agent, and oxidize liquid as a cleaning medium for washing. Mixing at a weight ratio of 2.2:1 to remove water-soluble impurities doped in the oxidizing solution, the washing temperature is 28°C, and the washing time is 4h, to finally obtain the cumene hy...

specific Embodiment 3

[0031] A kind of production method of dicumyl peroxide, concrete operation is as follows:

[0032] (1) Raw material pretreatment: mix the raw material containing cumene and the lye in a mixer in a ratio of 1:1.0 by weight, and perform alkali washing. The temperature of the alkali washing is 26° C., and the time is 2 hours. The pH value of cumene in the oxidation feed material obtained after the reaction is controlled at 6;

[0033] (2) generate cumene hydroperoxide: the processed cumene and air are delivered to oxidation tower together to generate cumene hydroperoxide CHP;

[0034] (3) Purification of cumene hydroperoxide: transport cumene hydroperoxide CHP to a special water washing tower with a pump, use water as a cleaning agent, and oxidize liquid as a cleaning medium for washing. Mixing at a weight ratio of 2.1:1 to remove water-soluble impurities doped in the oxidizing solution, the washing temperature is 24°C, and the washing time is 3h, to finally obtain the cumene hy...

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PUM

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Abstract

The invention discloses a production method of dicumyl peroxide. The production method comprises the following specific operating steps: (1) pretreating raw materials; (2) producing cumyl hydroperoxide; (3) purifying the cumyl hydroperoxide; (4) producing an intermediate product benzyl alcohol; (5) refining the benzyl alcohol; (6) performing a condensation reaction. By the production method, the defects of DCP production in the conventional technology are overcome, the production process is shortened, the production cost is reduced and the environment pollution is lowered.

Description

technical field [0001] The invention belongs to the field of chemistry, and in particular relates to a production method of dicumyl peroxide. Background technique [0002] Industrial-scale production of DCP is based on cumene as raw material, which is converted into cumene hydroperoxide CHP through the oxidation reaction of cumene, and part of CHP is reduced to generate dimethyl benzyl alcohol DMCA, and then DMCA is processed with another part of CHP The condensation reaction generates DCP, and finally the DCP product is crystallized and refined to obtain the final product. [0003] In the DCP production process, the traditional process technology has the problems of low DCP selectivity, low yield, huge fluctuation of process parameters, and difficulty in large-scale industrial application. Contents of the invention [0004] Purpose of the invention: in order to solve the deficiencies in the prior art, the invention provides a kind of production method of dicumyl peroxide...

Claims

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Application Information

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IPC IPC(8): C07C407/00C07C409/16
CPCC07C407/00C07C29/132C07C409/16C07C409/10C07C33/20
Inventor 刘宏光林定多万浥尘阎洛成沈大伟
Owner 江苏道明化学有限公司
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