Ethylene and oxygen mixing method

A technology of oxygen and ethylene, which is applied in the field of ethylene and oxygen mixing in the ethylene oxide/ethylene glycol process, can solve the problems such as the unsatisfactory mixing effect of ethylene and oxygen, and achieve enhanced ability to adapt to changes in operating load and good technical effects , to ensure the effect of stability

Active Publication Date: 2014-10-08
SINOPEC SHANGHAI ENG +2
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  • Abstract
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  • Claims
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Problems solved by technology

[0006] The technical problem to be solved by the present invention is that there is an unsatisfactory mixing effect of ethylene and oxygen in the prior art, and a new method for mixing ethylene and oxygen is provided

Method used

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  • Ethylene and oxygen mixing method
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  • Ethylene and oxygen mixing method

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] use figure 1 and figure 2 For the central main pipe oxygen mixer shown, the structural parameters of the oxygen mixer are as follows:

[0031] Main channel inner diameter: 1100mm

[0032] Inner diameter of central main pipe: 100mm

[0033] Number of branch pipes: 13

[0034] Branch pipe inner diameter: 32mm

[0035] Branch spacing: 88.4mm

[0036] Small hole inner diameter: 7mm

[0037] Hole spacing: 90mm

[0038] Number of small holes: 128

[0039] Select the central branch pipe 7 (the number of small holes is 8), and compare the back pressure deviation of each small hole (that is, the deviation between the small hole back pressure and the average value of the back pressure), and investigate the mixing effect of the central main pipe mixer.

[0040] The intake volume is as follows:

[0041] Oxygen flow: 3314kg / hr

[0042] Oxygen temperature: 25°C

[0043] Oxygen pressure: 2647.8KPa G

[0044] Oxygen density: 36kg / m 3

[0045] Oxygen viscosity: 0.021cp

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Abstract

The invention relates to an ethylene and oxygen mixing method which is mainly used for solving the problem of an unsatisfactory mixing effect of ethylene and oxygen in the prior art. According to the technical scheme for solving the problem effectively, ethylene entering from a main runner and oxygen entering from a radially-arranged oxygen distributor are mixed in a mixer; the oxygen distributor comprises a central main pipe and at least one branch pipe; the central main pipe is vertically communicated with the branch pipe; the branch pipes are symmetrically arranged on the two sides of the central main pipe; small holes symmetrically distributed by taking the central main pipe as the center are formed in the branch pipes; the gas flow direction in the small holes is consistent with that in the main runner. The method can be applied to industrial production for producing ethylene oxide with a direct oxidization process.

Description

technical field [0001] The invention relates to a method for mixing ethylene and oxygen, in particular to a method for mixing ethylene and oxygen in an ethylene oxide / ethylene glycol process. Background technique [0002] There are two industrial production methods of ethylene oxide / ethylene glycol (EO / EG), namely chlorohydrin method and ethylene direct oxidation method. Ethylene direct oxidation is further divided into air oxidation and oxygen oxidation. Compared with the air oxidation method, the oxygen oxidation method has a shorter process flow, less equipment, and less investment in plant construction; the selectivity of the catalyst in the oxidation reaction is high, and the reaction temperature is lower than that of the air method, which can prolong the life of the catalyst and maintain the stable operation of production more favorable. Usually the production cost of oxygen oxidation method is about 10% lower than that of air oxidation method. Due to the obvious ad...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01F3/02B01F5/00B01F23/10
Inventor 薛宏庆束忠明陈迎周兴贵李勇臧霞静堵祖荫杨芳
Owner SINOPEC SHANGHAI ENG
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