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Static mixer for ethylene and oxygen

A static mixer, ethylene technology, used in fluid mixers, mixers, transportation and packaging, etc., can solve the problems of unsatisfactory mixing effect of olefin and oxygen, and achieve simple structure, increased pressure drop, and uniform speed. Effect

Active Publication Date: 2018-07-20
SINOPEC SHANGHAI ENG +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The technical problem to be solved by the present invention is the unsatisfactory problem of mixing effect of olefin and oxygen in the prior art, and a new static mixer of ethylene and oxygen is provided

Method used

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  • Static mixer for ethylene and oxygen
  • Static mixer for ethylene and oxygen
  • Static mixer for ethylene and oxygen

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] A static mixer of ethylene and oxygen, such as figure 1 , 2 As shown, the olefin enters the mixing zone along the main channel, and the oxygen passes through the wall of the olefin main channel and enters the central oxygen distributor of the mixing chamber. Ethylene mixes quickly and evenly.

[0024] The structural parameters of the online mixing equipment mixer are as follows:

[0025] use figure 1 with figure 2 For the mixer of ethylene and oxygen shown, the internal diameter of the olefin main pipeline is DN1100, the diameter of the oxygen pipeline is DN150, the central oxygen distributor is a sphere with a diameter of 250, the diameter of the spiral distribution pipe is DN80, and the number of spiral distribution pipes is 3, divided into The piping inlets are evenly distributed in the cross-section of the olefin main pipeline, the angle between adjacent spiral distribution pipes is 120 degrees, the average flow velocity in the distribution pipes is 12m / s, and ...

Embodiment 2

[0039] According to the conditions and steps described in embodiment 1, the structural parameters of the online mixing equipment mixer are as follows:

[0040] The structural parameters of the online mixing equipment mixer are as follows:

[0041] use figure 1 with figure 2 For the mixer of ethylene and oxygen shown, the internal diameter of the olefin main pipeline is DN1100, the diameter of the oxygen pipeline is DN150, the central oxygen distributor is a sphere with a diameter of 250, the diameter of the spiral distribution pipe is DN80, and the number of spiral distribution pipes is 5. The pipe inlets are evenly distributed in the cross-section of the olefin main pipe, the angle between adjacent spiral distribution pipes is 72 degrees, the average flow velocity in the distribution pipes is 11m / s, and each spiral distribution pipe has 35 small holes with a diameter of 11mm , the nozzle speed is 45m / s, and the ends of the five spiral distribution pipes converge with the c...

Embodiment 3

[0055] According to the conditions and steps described in embodiment 1, the structural parameters of the online mixing equipment mixer are as follows:

[0056] The structural parameters of the online mixing equipment mixer are as follows:

[0057] use figure 1 with figure 2 For the mixer of ethylene and oxygen shown, the internal diameter of the olefin main pipeline is DN500, the diameter of the oxygen pipeline is DN50, the central oxygen distributor is a sphere with a diameter of 100, the diameter of the spiral distribution pipe is DN32, and the number of spiral distribution pipes is 2, divided into The pipe inlets are evenly distributed in the cross-section of the olefin main pipe, the angle between adjacent spiral distribution pipes is 180 degrees, the average flow velocity in the distribution pipes is 9m / s, and each spiral distribution pipe has 35 small holes with a diameter of 11mm , the nozzle speed is 45m / s, and the ends of the two spiral distribution pipes converge ...

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Abstract

The invention relates to a static mixer for ethylene and oxygen and mainly solves the problem that the mixing effect of olefin and oxygen is not ideal in the prior art. The static mixer for ethylene and oxygen comprises a main ethylene pipeline, wherein the tail end of the main ethylene pipeline is communicated with a mixing chamber, a plurality of spiral oxygen allocating pipes are arranged in the mixing chamber, an oxygen pipeline enters the center of the main ethylene pipeline from the side surface and enters an oxygen allocator, oxygen enters the spiral allocating pipes through the allocator, the plane of the spiral allocating pipes is perpendicular to the flowing direction of ethylene, a plurality of oxygen nozzles are uniformly distributed on each spiral allocating pipe, and the nozzle direction is consistent with the flowing direction of ethylene. By means of the technical scheme, the problem is better solved, and the mixer can be used for mixing ethylene and oxygen.

Description

technical field [0001] The present invention relates to a static mixer for ethylene and oxygen. 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 advantages of the oxygen oxidation method over the air oxidation method, the oxygen oxidation meth...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01F5/04
CPCB01F25/31332
Inventor 裴凯凯江继峰陈迎刘肖肖徐曼张亚男
Owner SINOPEC SHANGHAI ENG
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