High-efficiency safe method for mixing oxygen and combustible gas

A technology of gas mixing and oxygen, which is applied in the direction of mixing methods, gas and gas/steam mixing, mixers, etc., can solve the problems of low mixing efficiency and unsafety, and achieve good technical effects

Active Publication Date: 2017-09-29
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The technical problem to be solved by the present invention is the low mixing efficiency and unsafe problem in the prior art, and a new efficient and safe mixing method of oxygen and combustible gas is provided

Method used

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  • High-efficiency safe method for mixing oxygen and combustible gas
  • High-efficiency safe method for mixing oxygen and combustible gas

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] Such as figure 1 As shown, the gas mixing device includes an oxygen inlet and distribution device, a combustible gas inlet, a cylindrical mixing space, a flame arresting device and a mixed gas outlet. Two combustible gas inlet pipes 1 are evenly arranged around the gas mixing space, through which the combustible gas enters the gas mixing space 6 and forms a cross-flow flow with oxygen. The oxygen intake and distribution device comprises an oxygen intake pipe 2, a motor rotating device 3 connected thereto, an oxygen distribution branch pipe 4 and jet holes 5 on the branch pipe, as figure 2 As shown in the top view of the oxygen distribution device, the oxygen distribution branch pipe 4 is arranged at the bottom of the oxygen intake pipe 2 and is perpendicular to it. , Isometric circular hole. Oxygen enters each oxygen distribution branch pipe 4 from the oxygen intake pipe 2, and is sprayed out from the jet hole 5 on the branch pipe. The motor rotating device 3 drives ...

Embodiment 2

[0021] According to the conditions and steps described in Example 1, four combustible gas inlet pipes 1 are evenly arranged around the gas mixing space, and the number of oxygen distribution branch pipes is four. The opening ratio of the oxygen distribution branch pipe is 0.36%. The rotation speed of the motor rotating device is 1200rpm. The fire retardant device is filled with corrugated fire retardant materials. The ratio of the height of the fire retardant zone to the gas mixing space is 0.4. The ratio of the pipe diameter of the mixed gas outlet to the diameter of the gas mixing space is 0.48.

Embodiment 3

[0023] According to the conditions and steps described in Example 1, six combustible gas inlet pipes 1 are uniformly arranged around the gas mixing space, and the number of oxygen distribution branch pipes is six. The opening ratio of the oxygen distribution branch pipe is 0.45%. The rotation speed of the motor rotating device is 1000rpm. The fire retardant device is filled with corrugated fire retardant materials. The ratio of the height of the fire retardant zone to the gas mixing space is 0.2. The ratio of the pipe diameter of the mixed gas outlet to the diameter of the gas mixing space is 0.52.

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Abstract

The invention relates to a high-efficiency safe method for mixing oxygen and combustible gas, and the method mainly solves the problems that the mixing efficiency is low and a mixing method is unsafe in the prior art. According to the invention, the high-efficiency safe method for mixing the oxygen and the combustible gas is adopted, the oxygen enter every distributing branch pipe by an oxygen-intake pipe, sprays out from every small jet hole through the distributing branch pipes in a rotational flow manner, and enters a gas mixing space, and mixed gas in the gas mixing space enters a gas outlet through a fire-resistant area, wherein, the fire-resistant area is filled with fire-resistant materials. The technical scheme well solves the problems, and can be used for mixing of the oxygen and the combustible gas.

Description

technical field [0001] The invention relates to a method for efficiently and safely mixing oxygen and combustible gas. Background technique [0002] The mixing process of oxygen and combustible gas widely exists in oxidation reaction, oxygen-enriched combustion and synthesis of ammonia. For example, in the process of catalytic oxidation of ethylene to ethylene oxide, combustible gases such as ethylene and methane are mixed with oxygen in a certain proportion and enter the reactor. Common combustible gases such as ethylene, methane, etc. have a large explosion limit range in oxygen, and the gas mixing process must pass through the combustible gas explosion limit. If the two gases cannot be mixed quickly and efficiently, there will be ignition when the concentration is too high locally. danger of explosion. [0003] At present, most gas mixing devices adopt jet mixing technology (such as CN101848759A, CN104084065A), that is, oxygen and combustible gas are in parallel or cross...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01F3/02B01F5/00B01F5/02B01F13/04B01F23/10B01F35/60
CPCB01F23/10B01F2025/913B01F25/103B01F25/20B01F35/60B01F2101/501
Inventor 刘静如王振刚张帆徐伟石宁
Owner CHINA PETROLEUM & CHEM CORP
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