Method and device for preparing cumene hydroperoxide through cumene oxygenation

A technology of cumene hydroperoxide and diisopropylbenzene hydroperoxide, which is applied in the chemical industry, can solve the problems of large fluctuations in reaction temperature, low production efficiency, and large investment in equipment, so as to maintain the reaction temperature and fast reaction rate , High heat exchange efficiency

Active Publication Date: 2017-04-26
SINOPEC ENG GRP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0012] The first object of the present invention is to provide a method for preparing cumene hydroperoxide by oxidizing cumene, which solves the problems of large reaction temperature fluctuations, low production efficiency, and low yield in traditional processes
[0013] The second object of the present invention is to provide a device for preparing cumene hydroperoxide by oxidizing cumene, which solves the problems of large reaction temperature fluctuations, low production efficiency, low yield, and large equipment investment in traditional devices

Method used

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  • Method and device for preparing cumene hydroperoxide through cumene oxygenation
  • Method and device for preparing cumene hydroperoxide through cumene oxygenation

Examples

Experimental program
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Effect test

Embodiment 1

[0061] Cumene oxidation produces cumene hydroperoxide (CHP) method, and step is as follows:

[0062] A microreactor system assembled by two microreactors in series is adopted, the heat exchange system of the microreactor system is turned on, the temperature of the microreactor is controlled to be 90°C ± 2, and the reaction pressure is 0.5MPa; After the cumene solution of 0.5% diisopropylbenzene hydroperoxide (DCP) is mixed, pass in the first microreactor, the amount that passes into oxygen simultaneously is 40% of required oxygen total amount, and the total amount of oxygen Amount enters 2 times of the cumene mole number in the reactor compared with the same period, and the residence time of the control reactant is 1.0h; The second microreactor is connected in series at the first microreactor outlet, and there is a Oxygen enters the mouth to supplement the oxygen needed for the reaction. The amount of supplemented oxygen is 60% of the total oxygen required to promote the react...

Embodiment 2

[0064] Operation method is the same as embodiment 1, and the concentration of changing dicumylbenzene hydroperoxide (DCP) cumene solution is 0.4%, and the reaction temperature of adjustment microreactor is 100 ℃ ± 2, and reaction pressure 0.4MPa; Control reaction stops The time is 0.8h; the product after the reaction is separated, and the target reaction product and unreacted reactant are obtained respectively.

Embodiment 3

[0066] Operation method is the same as embodiment 1, and the concentration of changing dicumylbenzene hydroperoxide (DCP) cumene solution is 0.4%, and the reaction temperature of adjustment microreactor is 110 ℃ ± 2, and reaction pressure 0.4MPa; The time is 0.5 h; the product after the reaction is separated, and the target reaction product and unreacted reactant are obtained respectively.

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Abstract

The invention provides a method and a device for preparing cumene hydroperoxide through cumene oxygenation. The method is characterized in that in a microreactor group formed by one microreactor or more microreactors connected in series, cumene and an initiating agent are supplied to a first microreactor in the first microreactor group, then a reaction product obtained after oxidizing reaction flows into a second microreactor in the first microreactor group for the oxidizing reaction, continuous flow type oxidizing reaction is carried out sequentially through recurrence till the reaction product finally flows into the last one microreactor for the oxidizing reaction, and purification is carried out finally; in every oxidizing reaction process, oxygen is supplied to all microreactors, and a mole ratio of cumene supplied to the first microreactor to the total oxygen supplied to all microreactors is 0.1:5. The problems that the reaction temperature fluctuation of the traditional technology is large, and the production efficiency and the productivity are low are solved.

Description

technical field [0001] The invention relates to the technical field of chemical industry, in particular to a method and a device for preparing cumene hydroperoxide by oxidizing cumene. Background technique [0002] The cumene method is currently the most important method for producing phenol and acetone in the world, and its production capacity accounts for about 92% of the world's total phenol production capacity. The synthesis and production of phenol by the cumene method is specifically divided into three steps: [0003] The first step reaction is to use gas phase or liquid phase method to make propylene and benzene undergo addition reaction to generate cumene alkylation reaction; the second step reaction is to oxidize cumene to generate cumene hydroperoxide (CHP) Oxidation reaction; The third step is the decomposition reaction of cumene hydroperoxide to phenol and acetone. [0004] The second oxidation reaction is a key reaction in the production of phenol, the purpose...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C07C407/00C07C409/10B01J19/00
CPCB01J19/0093C07C407/00C07C407/003B01J2219/00867C07C409/10Y02P20/582
Inventor 韩海波魏小波
Owner SINOPEC ENG GRP CO LTD
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