Oxidative desulfurization process for continuous regeneration of desulfurizing agent

A technology for oxidative desulfurization and desulfurization agent, applied in chemical instruments and methods, dispersed particle separation, separation methods, etc., can solve the problems of air, water environment and water source pollution, human and environmental hazards, difficulty in waste solvent treatment, etc., to avoid Large fluctuations, no secondary pollution, and the effect of improving service life

Active Publication Date: 2015-04-29
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] Although the waste desulfurizers treated by the above methods can be put into use again, these methods have a large workload and cumbersome operations. The organic solvents used have serious harm to the human body and the environment, and can cause pollution to the air, water environment and water sources. It is also difficult to deal with

Method used

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  • Oxidative desulfurization process for continuous regeneration of desulfurizing agent

Examples

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Embodiment 1

[0039] Properties of desulfurizer: commercially available W701 type iron oxide desulfurizer, Φ3~5×(3~15)mm round bar shape, bulk density 0.8~0.9g / ml, average radial crushing strength / N cm -1 ≥50.

[0040] The distillation range of catalytic cracking diesel oil is 240~260°C; in the solid-liquid separator: the temperature for cooling and separating sulfur is 10°C.

Embodiment 2

[0044] Properties of desulfurizer: Prepare amorphous iron oxyhydroxide desulfurizer according to CN101898108A, containing 97wt% amorphous iron oxyhydroxide, spherical shape of Φ8~10mm, bulk density of 0.9~1.0g / ml, average crush resistance of particle points / N· Pieces ≥ 30.

[0045] The distillation range of catalytic cracking diesel oil is 260~280°C; in the solid-liquid separator: the temperature for cooling and separating sulfur is 8°C.

Embodiment 3

[0049] Desulfurizer properties: commercially available TC-22 zinc oxide desulfurizer, Φ4×(4~10)mm round bar shape, bulk density 0.9~1.1g / ml, average radial crushing strength / N cm -1 ≥40. The distillation range of catalytic cracking diesel oil is 300~330°C; in the solid-liquid separator: the temperature for cooling and separating sulfur is 10°C.

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Abstract

The invention discloses an oxidative desulfurization process for continuous regeneration of a desulfurization agent. The process is characterized by comprising the following steps: hydrogen sulfide-containing gas and oxygen-containing gas are in contact with the desulfurization agent at a desulfurization agent bed layer in a fixed bed reactor for oxidative desulfurization and desulfurization agent regeneration reaction, purified gas is discharged from the top of the reactor, catalytic cracking diesel is introduced in a reaction process for dissolving elemental sulfur generated in the regeneration reaction, and the catalytic cracking diesel in which elemental sulfur is dissolved flows out of the reactor and is subjected to solid-liquid separation for recycling. According to the process, the desulfurization precision is high, the desulfurization agent is long in service life, the operation is simple, and the cost is low.

Description

technical field [0001] The invention relates to an oxidation desulfurization process in which a desulfurizer can be continuously regenerated. Background technique [0002] With the increasing development of the chemical synthesis industry, the consumption of industrial raw gas, various coal gases, natural gas, and synthetic raw material gas has increased significantly, and the environmental protection standards have become increasingly stringent. More stringent requirements have been put forward for various industrial and civil gas sources. Requirements, that is, the process gas must be effectively purified before industrial and civil applications, especially the removal of sulfur-containing gases, among which the removal of hydrogen sulfide is particularly important. [0003] At present, there are many methods for removing hydrogen sulfide at home and abroad, mainly including wet method and dry method. Wet desulfurization is generally suitable for raw materials with high s...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01D53/96B01D53/82B01D53/52
Inventor 刘淑鹤方向晨韩建华程明珠
Owner CHINA PETROLEUM & CHEM CORP
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