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Method for cumyl-hydroperoxide-propylene-oxide (CHPPO)-based propylene oxide generating device with by-product dicumyl peroxide (DCP)

A technology for the by-production of dicumyl peroxide and propylene oxide, which is applied to the preparation of peroxide compounds, chemical instruments and methods, and the preparation of organic compounds, and can solve problems such as high energy consumption and material consumption, and generation of sulfide wastewater

Active Publication Date: 2015-09-02
SINOPEC SHANGHAI ENG +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0011] The technical problem to be solved by the present invention is the problem of higher energy consumption and material consumption in the prior art and the generation of sulfide wastewater, and a new method for producing dicumyl peroxide DCP by-product of a propylene oxide CHPPO device is provided

Method used

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  • Method for cumyl-hydroperoxide-propylene-oxide (CHPPO)-based propylene oxide generating device with by-product dicumyl peroxide (DCP)
  • Method for cumyl-hydroperoxide-propylene-oxide (CHPPO)-based propylene oxide generating device with by-product dicumyl peroxide (DCP)

Examples

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Embodiment 1

[0027] A method for producing the main product of propylene oxide PO and the by-product of dicumyl peroxide DCP by adopting the steps of oxidation reaction, epoxidation reaction, condensation reaction, hydrogenolysis reaction and the like described in the present invention.

[0028] The operating conditions of the cumene oxidation reactor are: oxidation temperature 90°C, oxidation pressure 0.30MPaG; epoxidation reaction conditions are: epoxidation temperature 60°C, epoxidation pressure 5.5MPaG; condensation reactor operating conditions It is: the condensation temperature is 40°C, the condensation pressure is 0.002MPaG; the hydrogenolysis reaction conditions are: the hydrogenolysis temperature is 185°C, and the hydrogenolysis pressure is 2.2MPaG. Catalyst A is Ti-HMS catalyst; acid catalyst B is perchloric acid catalyst; catalyst C is Pd-Ni-Mg-SiO 2 catalyst. The mass ratio of CHP material to propylene in the epoxidation reaction is 1:1.42; the mass ratio of one CHP material t...

Embodiment 2

[0033] According to the conditions and steps described in Example 1, only the production scale of DCP was changed to 20,000 tons / year. The flow ratio of dimethyl benzyl alcohol CA intermediate product participating in condensation reaction and hydrogenolysis reaction is 1:23.3, the circulation of CA is 224,400 tons / year, and the consumption of hydrogen is 3993 tons / year. As a result, the circulation of CA is reduced by 10,100 tons / year, and the consumption of hydrogen is reduced by 179.3 tons / year; since there is no reduction reaction in the production of DCP, there is no need to consume sulfide reducing agents and no sulfide wastewater is generated.

Embodiment 3

[0037] According to the conditions and steps described in Example 1, only the production scale of DCP was changed to 30,000 tons / year. The flow ratio of dimethyl benzyl alcohol CA intermediate product participating in condensation reaction and hydrogenolysis reaction is 1:15.5, the circulation volume of CA is 219,400 tons / year, and the consumption of hydrogen gas is 3904 tons / year. As a result, the circulation of CA is reduced by 15,100 tons / year, and the consumption of hydrogen is reduced by 268.9 tons / year; since there is no reduction reaction in the production of DCP, there is no need to consume sulfide reducing agents, and no sulfide wastewater is generated.

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Abstract

The invention relates to a method for a cumyl-hydroperoxide-propylene-oxide (CHPPO)-based propylene oxide generating device with by-product dicumyl peroxide (DCP), which mainly aims to solve the problems of high energy consumption, high material consumption, and the generation of sulfide waste water in the prior art. According to the technical scheme of the method for the cumyl-hydroperoxide-propylene-oxide (CHPPO)-based propylene oxide generating device with by-product dicumyl peroxide (DCP), the isopropyl benzene reacts with the air in an isopropyl benzene oxidation reactor to generate the cumyl-hydroperoxide (CHP) material. After that, the CHP material is at least divided into two outputs. One output of the CHP material reacts with propylene during the epoxidation reaction to generate an alpha-cumyl alcohol (CA) intermediate product and a propylene oxide (PO) product. The CA intermediate product is at least divided into two outputs. One output of the CA intermediate product is fed into a condensation reactor together with the other output of the CHP material. Under the effect of an acid catalyst B, a condensation reaction occurs between the CA intermediate product and the CHP material to generate a dicumyl peroxide (DCP) by-product. The other output of the CA intermediate product reacts with the hydrogen material under the effect of a catalyst C during the hydrogenation reaction to generate the isopropyl benzene and the isopropyl benzene can be recycled. In this way, the above problem can be well solved. the method can be applied to the CHPPO-based propylene oxide generating device.

Description

technical field [0001] The invention relates to a method for by-producing dicumyl peroxide DCP in a propylene oxide CHPPO device. Background technique [0002] Propylene oxide PO is the third largest organic chemical product in the production of propylene derivatives after polypropylene and acrylonitrile. PO is used in the production of polyether polyols, propylene glycol, glycerin, nonionic surfactants, oilfield demulsifiers, pesticide emulsifiers and other products. Therefore, PO has a wide range of uses and a huge market demand. [0003] Dicumyl peroxide DCP is an excellent vulcanizing agent for rubber products, an initiator for polymerization, a foaming agent and curing agent for polymers, and a crosslinking agent for copolymers. Therefore, DCP is used in shoemaking, wires, and cables. , Building materials, coatings, paints, rubber, plastics and other industries are widely used, and the demand continues to increase. [0004] PO production technologies mainly include ch...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C07D303/04C07D301/19C07C409/16C07C407/00
CPCC07C407/00C07D301/19C07D303/04C07C409/16
Inventor 杨建平何琨李勇张斌李真泽徐尔玲
Owner SINOPEC SHANGHAI ENG