Production equipment of epoxypropane

A technology of propylene oxide and production equipment, which is applied in the field of propylene oxide production equipment and can solve the problem of high energy consumption

Active Publication Date: 2016-02-10
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] The technical problem to be solved by the present invention is that there is a problem of ...

Method used

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  • Production equipment of epoxypropane

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] Such as figure 1 As shown, taking a 100,000-ton / year PO plant as an example, the raw material cumene hydroperoxide and fresh propylene react in reactor Ⅰ to produce α,α-dimethylbenzyl alcohol, cumene, and propylene oxide , a liquid phase stream 3 of propylene and propane. Stream 3 is sent to high-pressure propylene recovery tower II for separation, and stream 4 is obtained from the top of the tower, and stream 5 containing α,α-dimethylbenzyl alcohol, cumene, propylene oxide, a small amount of propylene and propane is obtained from the bottom of the tower. Stream 5 is sent to the low-pressure propylene recovery tower III for separation, stream 6 is obtained at the top of the tower, and stream 8 of crude propylene oxide product from which propylene has been removed is obtained at the bottom of the tower. The propylene stream 6 recovered at the top of the low-pressure propylene recovery tower III is divided into two parts, and part of the stream 7 enters the depropanizer IV...

Embodiment 2

[0036] With [embodiment 1], only operating condition changes.

[0037] In liquid stream 3, by weight percentage,

[0038] The content of α,α-dimethylbenzyl alcohol was 26%, the content of cumene was 21.5%, the content of propylene oxide was 10.5%, the content of propylene was 39%, and the content of propane was 2%.

[0039] The operating conditions of the high-pressure propylene recovery tower are as follows: the operating pressure is 1.6MPa, the operating temperature at the top of the tower is 40°C, the operating temperature at the bottom of the tower is 87°C, and the number of theoretical plates is 25.

[0040] The operating conditions of the low-pressure propylene recovery tower are as follows: the operating pressure is 0.2MPa, the operating temperature at the top of the tower is -20°C, the operating temperature at the bottom of the tower is 120°C, and the number of theoretical plates is 20.

[0041] The operating conditions of the depropanizer are as follows: the operatin...

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Abstract

The invention relates to a production equipment of epoxypropane. The production equipment is mainly used for solving a problem of the prior art that energy consumption is high. The production equipment comprises a reactor, a high pressure propylene recovery tower, a low pressure propylene recovery tower, and a depropanizing tower, wherein operation pressure of the high pressure propylene recovery tower ranges from 0.5 to 3.5MPa as gage pressure, and operation pressure of the low pressure propylene recovery tower ranges from 0.1 to 0.4MPa as gage pressure. The production equipment is capable of solving the problem preferably, and can be applied to industrial production of epoxypropane.

Description

technical field [0001] The invention relates to a production equipment of propylene oxide. Background technique [0002] Propylene oxide (PO) is a very important organic chemical raw material. It is the third largest organic chemical product in the output of propylene derivatives after polypropylene and acrylonitrile. It is mainly used in the production of polyether, propylene glycol, isopropanolamine, Non-polyether polyols, etc., and then produce unsaturated polyester resins, polyurethanes, surfactants, flame retardants, etc., which are widely used in chemical industry, light industry, medicine, food, textile and other industries, and have great significance for the development of chemical industry and national economy. profound influence. With the expansion of the use of propylene oxide and the growth of the amount of downstream products, the market demand for propylene oxide is increasing. [0003] The method of industrial production propylene oxide mainly contains chlo...

Claims

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Application Information

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IPC IPC(8): C07D303/04C07D301/19C07D301/32
Inventor 杨卫胜李木金
Owner CHINA PETROLEUM & CHEM CORP
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