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Method for recovering and purifying waste gas during crude benzene hydrogenation refining production

A technology for hydrorefining and waste gas recovery, applied in chemical instruments and methods, separation methods, gas fuels, etc., can solve problems such as air pollution, waste of chemical raw materials, etc., to reduce pollution, realize comprehensive recycling, and achieve safe and stable operation. Effect

Active Publication Date: 2013-03-27
YUNNAN COAL & ENERGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Therefore simple discharge has the following disadvantages: on the one hand, a large amount of nitrogen dioxide (NO2) produced by combustion 2 ), sulfur dioxide (SO 2 ), it will cause serious pollution to the atmosphere, and on the other hand, it will make the useful components in the exhaust gas such as methane, hydrogen, carbon monoxide (CO) and other good fuel resources, as well as valuable chemical raw materials such as ammonia, sulfur, and benzene substances. wasted

Method used

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  • Method for recovering and purifying waste gas during crude benzene hydrogenation refining production

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Experimental program
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Effect test

Embodiment 1

[0017] A. Send the analytical gas in the crude benzene hydrorefining production 1 to the conventional gas storage tank 3, buffer and store the analytical gas through the gas storage tank 3, and then use 300m 3 The amount of / h is mixed with the gas from the coke oven 5;

[0018] B. Send the vented gas from crude benzene hydrofining production 1 to the conventional closed horizontal storage tank 2, mix and collect the vented gas through the closed horizontal storage tank 2, and control the temperature of the vented gas to 35°C to collect Condensed benzene substances, after 70m 3 The amount of / h is mixed with the gas from the coke oven 5;

[0019] C. Send the hydrogen sulfide waste gas in the crude benzene hydrofining production 1 to the conventional closed horizontal storage tank 4, buffer and store the hydrogen sulfide waste gas through the closed horizontal storage tank 4, and initially separate the entrained hydrogen sulfide in the waste gas After the droplet, at 10m 3 T...

Embodiment 2

[0025] A. Send the analytical gas in the crude benzene hydrorefining production 1 to the conventional gas storage tank 3, buffer and store the analytical gas through the gas storage tank 3, and then use the 600m 3 The amount of / h is mixed with the gas from the coke oven 5;

[0026] B. Send the vented gas from crude benzene hydrofining production 1 to the conventional closed horizontal storage tank 2, mix and collect the vented gas through the closed horizontal storage tank 2, and control the temperature of the vented gas to 35°C to collect Condensed benzene substances, after 100m 3 The amount of / h is mixed with the gas from the coke oven 5;

[0027] C. Send the hydrogen sulfide waste gas in the crude benzene hydrofining production 1 to the conventional closed horizontal storage tank 4, buffer and store the hydrogen sulfide waste gas through the closed horizontal storage tank 4, and initially separate the hydrogen sulfide waste gas After the entrained droplet, at 30m 3 The...

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Abstract

The invention provides a method for recovering and purifying waste gas during crude benzene hydrogenation refining production, which is characterized by comprising the following steps: sending desorbed gas during the crude benzene hydrogenation refining production into a desorbed gas buffer, and then mixing with coke oven gas with the amount of 300-600m<3. / hour; sending dispersing gas in the crude benzene hydrogenation refining production to a dispersing and collecting tank, controlling the temperature of the dispersing gas at 35 DEG C, collecting and recovering condensed benzene substances, and then mixing with the coke oven gas with the amount of 70-100<3> / hour; sending hydrogen sulfide in the crude benzene hydrogenation refining production into the buffer, collecting and recovering liquid drops in the hydrogen sulfide, then mixing with the coke oven gas with the amount of 10-30m<3> / hour, performing purification treatment together, and never burning the waste gas during the crude benzene hydrogenation refining production any more, thereby not only realizing comprehensive recycling of resources, reducing the environmental pollution caused by burning of the waste gas, and improving the environment of a factory, but also recovering ammonia, sulfur, benzene substances and other precious chemical raw materials in the waste gas, and being a favorable way for enabling an enterprise to realize clean production, energy conservation, consumption reduction, pollution reduction and synergy.

Description

technical field [0001] The invention relates to a waste gas recovery and purification method, especially a method for recovering, purifying and utilizing waste gas such as analytic gas, degassed gas and hydrogen sulfide in the crude benzene hydrogenation refining production in the coal chemical industry, which belongs to industrial waste gas treatment technology field. Background technique [0002] During the crude benzene hydrorefining process produced by coking, a large amount of exhaust gas such as analytic gas and vent gas will be produced, and these exhaust gases contain methane (CH 4 ), hydrogen (H 2 ), carbon monoxide (CO), carbon dioxide (CO 2 ), nitrogen (N 2 ), hydrogen sulfide (H 2 S), benzene (C n h m ) substances and so on. The treatment method in the prior art is: send these analytical gases and vented gases to the venting main pipe in a centralized manner, and then lead them to the flare system with a certain safety distance from the production area thr...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01D53/90B01D53/52B01D53/58C01C1/24C01B17/05C07C15/04C07C7/04C10L3/10
CPCY02A50/20
Inventor 张鸿明黄明宗张国庆张丕祥杨明富杨勇
Owner YUNNAN COAL & ENERGY