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Method and device for removing organic sulfur in gas by using compound ionic liquid desulfurizer

An ionic liquid and desulfurization device technology, which is applied in the field of compound ionic liquid desulfurizers, can solve problems such as poor organic sulfur removal effect, and achieve excellent organic sulfur removal effect.

Pending Publication Date: 2021-12-21
SOUTHWEST PETROLEUM UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to overcome the disadvantages of the existing sulfone amine method on the removal of organic sulfur in sulfur-containing feed gas, and to provide a method and device for removing organic sulfur in gas with a compound ionic liquid desulfurizer

Method used

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  • Method and device for removing organic sulfur in gas by using compound ionic liquid desulfurizer
  • Method and device for removing organic sulfur in gas by using compound ionic liquid desulfurizer
  • Method and device for removing organic sulfur in gas by using compound ionic liquid desulfurizer

Examples

Experimental program
Comparison scheme
Effect test

Embodiment A

[0032] Configuration comparative example 1-3 and embodiment 1-3 desulfurizer, adopt such as figure 1 The shown desulfurization device performs organic sulfur treatment on a certain sulfur-containing natural gas at 30°C and 0.5 MP. The sour gas components of the sulfur-containing natural gas are mainly common organic Sulfur, with a total sulfur content of 357 mg / m³.

[0033] The result of the operation is as follows:

[0034]

[0035]Note: Among them, [N2222][Gly] is tetraethylamine glycinate, [BMIM][L-Ala] is 1-butyl-3-methylimidazolium L-alanine salt, [EMIM][β-Ala] For 1-ethyl-3-methylimidazole β-alanine salt.

[0036] It can be seen from the results in the above table that compared with the traditional sulfone amine solvent, the desulfurization effect of amino acid ionic liquid is significantly improved, and in the composite desulfurizer, with the increase of the proportion of amino acid ionic liquid, the desulfurization effect continues to improve.

[0037] In the tra...

Embodiment B

[0039] Configure comparative example 2 and embodiment 5-9 desulfurizer, adopt such as figure 1 The shown desulfurization device treats the associated gas of a sulfur-containing oilfield with organic sulfur at 30°C and 0.5MP. The sour gas component contains 9.2% CO 2 In addition, it is mainly common organic sulfur such as methyl mercaptan, ethanethiol, propylene mercaptan, and carbonyl sulfide, with a total sulfur content of 370 mg / m³.

[0040] The result of the operation is as follows:

[0041]

[0042] Although amino acid ionic liquids can desulfurize gases better than traditional sulfone amine solvents, when the gas contains CO 2 , due to CO 2 Reaction with desulfurization agent will interfere with desulfurization effect. right without CO 2 When the desulfurization of sulfur-containing raw gas is carried out, the desulfurization effect is continuously improved with the increase of the proportion of amino acid ionic liquids, but when carbon dioxide exists, the desulfur...

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Abstract

The invention discloses a method and device for removing organic sulfur in gas by using a compound ionic liquid desulfurizer, and relates to the technical field of sulfur-containing gas treatment. The desulfurizer is formed by mixing amino acid ionic liquid and organic solvents such as amine, alcohol amine and sulfolane according to a certain proportion. Organic sulfur in sulfur-containing gases such as shale gas, natural gas, oilfield associated gas, condensate gas field gas and mine gas and other industrial sulfur-containing waste gases is removed. For raw material gas with low carbon content, the removal efficiency of organic sulfur is obviously superior to that of a traditional sulphone amine solution, and especially under a low-pressure condition, the method has a great desulfurization advantage; and for raw material gas with relatively high CO2 content, the amino acid ionic liquid disclosed by the invention has a relatively high organic sulfur removal effect compared with pure amino acid ionic liquid.

Description

technical field [0001] The invention relates to the technical field of sulfur-containing gas treatment, in particular to a method and a device for removing organic sulfur in gas using a compound ionic liquid desulfurizer. Background technique [0002] Organic sulfur in sulfur-containing gases is mainly composed of mercaptans (RSH), carbonyl sulfide (COS), carbon disulfide (CS 2 ), sulfide (RSR) and disulfide (RSSR) and other components exist, among which mercaptan (RSH) and carbonyl sulfide (COS) are the main ones. The existence of organic sulfur in shale gas, oilfield associated gas, condensate gas, mine gas and other gases will not only endanger people's health, but also cause problems such as pipeline, equipment, instrument corrosion and catalyst poisoning during use, especially in natural gas During the liquefaction (LNG) process, organic sulfur compounds become solid before reaching the methane liquefaction temperature of -162°C, causing blockage of equipment and pipel...

Claims

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Application Information

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IPC IPC(8): B01D53/78B01D53/48
CPCB01D53/78B01D53/48B01D2257/306
Inventor 李爱蓉康洛铭
Owner SOUTHWEST PETROLEUM UNIV
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