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Isothermal adiabatic reactor for olefin and hydrogen peroxide epoxidation

A hydroperoxide and adiabatic reactor technology, which is applied in chemical instruments and methods, organic chemistry, chemical/physical processes, etc., can solve the problems of large footprint, incomplete reaction of hydroperoxide, and difficult temperature control. Achieve the effects of simplifying the reaction process, improving the service life and overall utilization, and reducing the loss of materials

Pending Publication Date: 2018-03-30
CHANGZHOU RUIHUA CHEM ENG&TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0030] Aiming at the problems that the existing epoxidation reactor occupies a large area, the temperature is difficult to control, and the hydroperoxide cannot be completely reacted, the present invention provides an isothermal adiabatic reactor for the epoxidation of olefins and hydroperoxides. The temperature is easy to control, and the hydroperoxide can react completely in this equipment

Method used

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  • Isothermal adiabatic reactor for olefin and hydrogen peroxide epoxidation
  • Isothermal adiabatic reactor for olefin and hydrogen peroxide epoxidation
  • Isothermal adiabatic reactor for olefin and hydrogen peroxide epoxidation

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Effect test

Embodiment 1

[0048] Such as Figure 1-Figure 3 As shown, the isothermal adiabatic reactor for the epoxidation of olefins and hydroperoxides according to the present invention comprises: a cylindrical shell 1 with an upper head 2 and a lower head 3, and the top of the upper head 2 is provided with The reaction product outlet 4; the cylindrical shell 1 is divided into upper and lower sections; the upper section is an adiabatic catalytic reaction section, which consists of an adiabatic section housing 5, a catalyst pressure plate 6, an adiabatic section catalytic bed 7 and a support plate 8; the lower section is an isothermal catalytic reaction section, and the two ends of the isothermal catalytic reaction section are respectively provided with an upper tube box 9 and a lower tube box 15; the bottom of the lower head 3 is provided with a reaction raw material inlet 17.

[0049] Such as figure 1 with figure 2 As shown: the isothermal catalytic reaction section is divided into a tube side an...

Embodiment 2

[0061] Using the reactor of the present invention, the main structural size data are: the inner diameter is 50mm, the height of the isothermal catalytic reaction section is 1m, the height of the adiabatic catalytic reaction section is 0.2m, and the upper TiO 2 loaded on SiO 2 Carrier catalyst, carried out the experiment of propylene and ethylbenzene hydroperoxide (EBHP), and experimental condition is shown in Table 3; Experimental result is shown in Table 4.

[0062] table 3

[0063] Experimental conditions

index

Reaction temperature, °C

80

Reaction pressure, MPaG

4.5

Propylene / EBHP, mol / mol

6

EBHP heavy hourly space velocity, h-1

0.8

[0064] Table 4

[0065] evaluation item

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Abstract

The invention relates to an isothermal adiabatic reactor for olefin and hydrogen peroxide epoxidation, and is particularly suitable for an epoxidation reaction of propylene and hydrogen peroxide. Thereactor comprises an upper end socket, a lower end socket, an isothermal catalytic reaction section, an upper pipe box, a lower pipe box and an adiabatic catalytic reaction section, wherein the upperpipe box and the lower pipe box are arranged at the two ends of the isothermal catalytic reaction section, and the adiabatic catalytic reaction section is arranged between the upper pipe box and the upper end socket; the adiabatic catalytic reaction section comprises an adiabatic section shell, a catalyst pressing plate and a supporting plate, the catalyst pressing plate and the supporting plate are fixedly connected with the adiabatic section shell, and an adiabatic section catalytic bed layer is arranged between the catalyst pressing plate and the supporting plate. According to the reactor,a traditional reaction process can be greatly simplified, few devices are used, and the process complexity is reduced; the temperature is easy to control, the service life of a catalyst is long, and the hydrogen peroxide can completely react in the equipment.

Description

technical field [0001] The invention belongs to the technical field of chemical and chemical reactors, in particular to an isothermal adiabatic reactor for the epoxidation of olefins and hydroperoxides, and is particularly suitable for the epoxidation reaction of propylene and hydroperoxides. Background technique [0002] Propylene oxide is one of the important intermediates in petrochemical industry. Among the propylene derivatives, propylene oxide is currently the third largest derivative after polypropylene and acrylonitrile. Propylene oxide is mainly used in the industry to prepare polyether polyols, propylene glycol, alcohol amines and various nonionic surfactants, and its derivatives are widely used in petrochemical, construction, home appliances, automobiles, medicine, pesticides, textiles, Japanese chemical and other industries. [0003] The traditional production method of propylene oxide is the chlorohydrin method, which is characterized by relatively short proce...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J8/04C07D303/04
CPCB01J8/04B01J8/0496C07D303/04B01J2208/00168
Inventor 徐志刚吴非克
Owner CHANGZHOU RUIHUA CHEM ENG&TECH
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