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A treatment method for refinery waste gas

A treatment method and technology for waste gas, which are applied in gas treatment, gaseous effluent wastewater treatment, separation methods, etc., can solve the problems of sulfur purity and sulfur foam flotation, and achieve the effect of avoiding adverse effects and efficient removal.

Active Publication Date: 2021-05-28
山东京博众诚清洁能源有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Although the above method can realize the desulfurization of refinery waste gas and recover sulfur, since the refinery waste gas from the refinery contains a certain amount of light hydrocarbon components, it has a defoaming effect as oil, which will affect the flotation of subsequent sulfur foams. selection, which in turn has a certain impact on the purity of the sulfur product

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0047] A treatment method for refinery waste gas, comprising the following steps:

[0048] 1) Mix coconut shell activated carbon, bamboo activated carbon and coal-based activated carbon according to the mass ratio of 1:0.3:1.5 to obtain mixed activated carbon; then mix 7kg of mixed activated carbon, 4L of octadecanoyl chloride and 2L of triethylamine in 50L of dichloro mixed in methane, and reacted at room temperature for 4 hours; then the reacted activated carbon was washed; finally, the washed activated carbon was dried at 120° C. for 18 hours to obtain hydrophobic activated carbon.

[0049] 2) Filling an appropriate amount of hydrophobic activated carbon into the degreaser, which is a container provided with an air inlet, an air outlet and an absorption medium feeding port.

[0050]3) Refinery waste gas (in waste gas: H 2 The volume concentration of S is 61%, and the volume concentration of light hydrocarbons is 1%). out of the air outlet. During the above process, the r...

Embodiment 2

[0059] A treatment method for refinery waste gas, comprising the following steps:

[0060] 1) Mix coconut shell activated carbon, bamboo activated carbon, coal-based activated carbon and sludge-based activated carbon according to the mass ratio of 1:0.3:1.5:3 to obtain mixed activated carbon; then mix 7kg of mixed activated carbon, 4L of octadecanoyl chloride and 2L of three Ethylamine was mixed in 50 L of dichloromethane, and reacted at room temperature for 4 hours; then the activated carbon after the reaction was washed; finally, the washed activated carbon was dried at 120° C. for 18 hours to obtain hydrophobic activated carbon.

[0061] 2) Filling an appropriate amount of hydrophobic activated carbon into the degreaser, which is a container provided with an air inlet, an air outlet and an absorption medium feeding port.

[0062] 3) Refinery waste gas (in waste gas: H 2 The volume concentration of S is 65%, and the volume concentration of light hydrocarbons is 1.5%). out ...

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Abstract

The invention belongs to the field of petrochemical industry, and in particular relates to a method for treating waste gas from a refinery. The treatment method comprises the following steps: a) passing the waste gas from a refinery through an adsorption medium to obtain deoiled waste gas; the adsorption medium includes hydrophobic activated carbon; the Hydrophobic activated carbon is made of activated carbon raw materials after hydrophobic modification, and the activated carbon raw materials include coconut shell activated carbon, bamboo activated carbon and coal-based activated carbon; b) contacting the deoiled waste gas with desulfurization absorption liquid to obtain desulfurized waste gas and desulfurized rich liquid . The present invention can efficiently remove light hydrocarbons in the refinery waste gas by pretreating the refinery waste gas in an adsorption medium composed of specific activated carbon materials, thereby effectively avoiding the adverse effects of the presence of light hydrocarbons on the subsequent treatment of the waste gas. Experimental results show that: after adopting the method provided by the invention to treat refinery exhaust gas, the removal rate of light hydrocarbons in the exhaust gas is as high as 99%.

Description

technical field [0001] The invention belongs to the field of petrochemical industry, in particular to a method for treating waste gas from a refinery. Background technique [0002] Refinery exhaust gas is the exhaust gas produced during the operation of coking, catalysis, hydrogenation, diesel cracking, sewage stripping and other refinery units. The hydrogen sulfide content is as high as 60%, and the poison and smell are very strong. If the torch is directly set, it will inevitably It will affect the surrounding environment and cannot meet the national environmental protection requirements, so desulfurization treatment must be carried out. [0003] In order to improve the economy of refinery waste gas desulfurization, some researchers have proposed a process for desulfurizing refinery waste gas and recovering sulfur. This process first uses sodium carbonate solution to absorb hydrogen sulfide in the waste gas to generate sodium bicarbonate solution; The solution is regenera...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01D46/00B01D53/14B01D53/18C02F1/24C01B17/05C02F103/18
CPCB01D46/0036B01D53/1468B01D53/18B01D2253/102B01D2258/02C01B17/05C02F2103/18
Inventor 苏怀兴栾波
Owner 山东京博众诚清洁能源有限公司
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