Rapid mixing equipment for ethylene and oxygen

An ethylene and oxygen technology, applied in the directions of gas and gas/vapor mixing, mixer, mixing method, etc., can solve the problem of unsatisfactory mixing effect of olefin and oxygen, and achieve simple structure, reduced flow cross section and increased pressure drop. Effect

Active Publication Date: 2020-10-16
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 mixing effect of olefins and oxygen in the prior art, and a new rapid mixing device for ethylene and oxygen is provided

Method used

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  • Rapid mixing equipment for ethylene and oxygen
  • Rapid mixing equipment for ethylene and oxygen
  • Rapid mixing equipment for ethylene and oxygen

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] An online mixing equipment for ethylene and oxygen, such as figure 1 , 2 As shown, it includes ethylene main pipeline, oxygen pipeline, and mixing chamber. The end of the ethylene main pipeline is connected to the mixing chamber. Several spiral distribution pipes are arranged in the mixing chamber. Mix exactly.

[0023] The structural parameters of the online mixing equipment mixer are as follows:

[0024] use figure 1 and figure 2 For the mixer of ethylene and oxygen shown, the inner diameter of the olefin main pipeline is DN1100, the diameter of the oxygen pipeline is DN150, the diameter of the spiral distribution pipe is DN80, the number of spiral distribution pipes is 3, and the inlets of the distribution pipes are evenly distributed on the cross-section of the main olefin pipeline. The included angle between adjacent spiral distribution pipes is 120 degrees, the average flow velocity in the distribution pipes is 12m / s, each spiral distribution pipe has 36 smal...

Embodiment 2

[0038] According to the conditions and steps described in embodiment 1, the structural parameters of the online mixing equipment mixer are as follows:

[0039] The structural parameters of the online mixing equipment mixer are as follows:

[0040] use figure 1 and figure 2 For the mixer of ethylene and oxygen shown, the inner diameter of the olefin main pipeline is DN1100, the diameter of the oxygen pipeline is DN150, the diameter of the spiral distribution pipe is DN65, the number of spiral distribution pipes is 5, and the inlets of the distribution pipes are evenly distributed on the cross-section of the main olefin pipeline. The included angle between adjacent spiral distribution pipes is 72 degrees, the average flow velocity in the distribution pipes is 11m / s, each spiral distribution pipe has 21 small holes with a diameter of 11mm, the nozzle speed is 45m / s, 5 The ends of the helical distribution tubes meet in the center of the mixing chamber.

[0041] The intake volu...

Embodiment 3

[0054] According to the conditions and steps described in embodiment 1, the structural parameters of the online mixing equipment mixer are as follows:

[0055] The structural parameters of the online mixing equipment mixer are as follows:

[0056] use figure 1 and figure 2 For the ethylene and oxygen mixer shown, the inner diameter of the olefin main pipeline is DN500, the diameter of the oxygen pipeline is DN50, the diameter of the spiral distribution pipe is DN32, the number of spiral distribution pipes is 2, and the inlets of the distribution pipes are evenly distributed on the cross-section of the main olefin pipeline. The included angle between adjacent spiral distribution pipes is 180 degrees, the average flow velocity in the distribution pipes is 9m / s, each spiral distribution pipe has 18 small holes with a diameter of 7mm, the nozzle speed is 32m / s, 2 The ends of the helical distribution tubes meet in the center of the mixing chamber.

[0057] The intake volume is ...

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Abstract

The invention relates to a rapid mixing device for ethylene and oxygen, which mainly solves the problem of unsatisfactory mixing effect of olefin and oxygen in the prior art. The present invention adopts a kind of rapid mixing equipment of ethylene and oxygen, comprising ethylene main pipe and mixing chamber, the end of ethylene main pipe is connected to the mixing chamber, a number of oxygen spiral distribution pipes are arranged in the mixing chamber, the plane of the spiral distribution pipe is perpendicular to the flow direction of ethylene, A number of oxygen nozzles are evenly distributed on each spiral distribution pipe. The direction of the nozzles is consistent with the flow direction of ethylene. The oxygen feed pipe is divided into several branch distribution pipes in the main pipe and enters the main pipe of ethylene, so that the ethylene entering from the main channel and the nozzle of the spiral distribution pipe are sprayed. The technical scheme of rapid mixing of the oxygen produced in the mixing zone solves the above problems well, and can be used in the mixing of ethylene and oxygen.

Description

technical field [0001] The invention relates to a rapid mixing device 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 metho...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01F3/02B01F5/02B01F23/10
CPCB01F23/10B01F25/21
Inventor 裴凯凯刘肖肖陈迎江继峰张翼张艺
Owner SINOPEC SHANGHAI ENG
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