Liquid phase load type gas desulfurizing agent

A desulfurizer and load-type technology, which is applied in the field of chemical product preparation, can solve the problems of large investment in equipment, high total operating cost and high energy consumption, and achieve the effects of good desulfurization effect, energy saving and operating cost reduction.

Active Publication Date: 2012-12-19
SHAANXI RES DESIGN INST OF PETROLEUM CHEM IND
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In general, wet desulfurization still has disadvantages such as large equipment investment, high energy consumption and high total operating cost in the actual implementation and application process.

Method used

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  • Liquid phase load type gas desulfurizing agent
  • Liquid phase load type gas desulfurizing agent

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] Sodium carbonate, EDTA iron, sulfonated anthraquinone, octylamine, and water are mixed in a mass ratio of 9:1.2:0.8:4:25 to prepare component A, and the component A is sprayed on the lignite active On the coke (component B), the mass ratio of the two (A, B) is 4:6. After it is completely absorbed, it becomes a high-efficiency desulfurizer and is loaded into the desulfurization tower. The gas to be purified is oilfield associated gas containing hydrogen sulfide 500ppm, the processing capacity is 6000 cubic meters per hour, the desulfurizer is filled with 5 cubic meters, at 40 ℃, the space velocity is 1200 per hour, the working sulfur capacity is 46.7%, and the outlet gas hydrogen sulfide ,20ppm.

[0020] The process conditions are as follows:

[0021] The oilfield associated gas contains macromolecular organic substances such as tar and benzene to prevent these substances from clogging the effective pore size of the desulfurizer. In the pretreatment part of the scheme, ...

Embodiment 2

[0023] Potassium carbonate, sodium carbonate, sodium bisulfite, EDDHA iron, cobalt phthalocyanine, tert-butylamine, and water are mixed in a mass ratio of 4:2:1.6:1.6:0.4:2.4:18 to prepare component A , spray component A on lignite activated coke (component B), the mass ratio of the two (A, B) is 3:7, after it is completely absorbed, it will be a high-efficiency desulfurizer, and it will be loaded into the desulfurization tower . The processing capacity is 8000 cubic meters per hour, the desulfurization agent is filled with 7 cubic meters, and the synthesis gas containing hydrogen sulfide 1700ppm to be purified is at 35°C, the space velocity is 1100-1200 / hour, the working sulfur capacity is 48.3%, and the outlet gas hydrogen sulfide is 30ppm .

[0024] Processing condition is the same as embodiment one.

Embodiment 3

[0026] Take sodium bicarbonate, sodium carbonate, EDDHA iron, sulfonated cobalt phthalocyanine, tert-butylamine, and water according to the mass ratio of 4:5.5:1.3:0.7:3.5:20 and mix together to prepare component A, and spray it On the semi-coke (component B), the mass ratio of the two (A, B) is 3.5:6.5. After it is completely absorbed, it becomes a high-efficiency desulfurizer and is loaded into a desulfurization tower. The gas to be purified is semi-coke furnace tail gas containing 1450ppm hydrogen sulfide, the treatment capacity is 8000 cubic meters per hour, the desulfurizer is filled with 7 cubic meters, at 45 °C, the space velocity is 3000 per hour, the working sulfur capacity is 42.7%, and the outlet gas is vulcanized Hydrogen 40ppm.

[0027] Processing condition is the same as embodiment one.

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Abstract

The invention relates to a liquid phase load type gas desulfurizing agent. The liquid phase load type gas desulfurizing agent comprises two components A and B, wherein the component A consists of absorbent (sodium carbonate and/or potassium carbonate and/or sodium bicarbonate and the like), oxidation catalyst (EDTA (ethylene diamine tetraacetic acid iron) and/or EDDHA (ethylenediamine di(O-hydroxyphenylacetate))-Fe and/or sulfonated cobalt phthalocyanine and the like), phase-transfer catalyst (methylamine or octylamine and the like) and water, and the component B adopts activated coke and/or activated carbon and/or semi coke and/or aluminium oxide and the like. Before packaging and transporting or constructing and loading, the component A is sprayed or sprinkled onto the component B to completely soak the component B or directly mixed with the component B, so the liquid phase load type gas desulfurizing agent is obtained. Compared with the prior art, the liquid phase load type gas desulfurizing agent has the advantages of less investment, high sulfur content, simplicity in operation, low operation cost, low energy consumption, good gaseous hydrogen sulfide removal effect, wide application scope and the like, and is used for effectively solving the problem of gaseous hydrogen sulfide removal during the gas purification process when synthesis gas, coke-oven gas, reservoir gas, shale gas and the like are produced or exploited.

Description

technical field [0001] The invention belongs to the technical field of preparation of chemical products, and relates to a gas purifying agent, in particular to a gas purifying agent containing hydrogen sulfide (H 2 S) Liquid-phase loaded desulfurizer for gas purification process. Background technique [0002] Syngas, coke oven gas, oil layer gas, shale gas and other energy and chemical projects have a large amount of hydrogen sulfide gas that is harmful to the environment and human body during the production or mining process. The removal of hydrogen sulfide gas is a must in the gas purification process. solved problem. [0003] It is currently used in the field to remove H in the process of gas purification 2 The methods of S mainly include dry desulfurization and wet desulfurization. [0004] 1. Dry desulfurization: use desulfurizers such as metal oxides and activated carbon. Metal oxides are mainly absorbed by chemical reactions, while activated carbon is mainly absor...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01D53/52
Inventor 薛群翔齐永红刘彦婷
Owner SHAANXI RES DESIGN INST OF PETROLEUM CHEM IND
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