Natural gas desulfurization device and desulfurization process applicable to production platform

Abstract

The invention provides a compact natural gas desulfurization device and desulfurization process applicable to a production platform. A buffering pretreatment process and a rich solution degasification process are organically combined and finished together; sedimentation reaction and a chemical regeneration process are organically combined and finished together; and meanwhile, chemical regeneration is designed into a two-stage regeneration process combining a first-stage spiral-flow aeration process and a second-stage regeneration process after sulfur sedimentation, wherein micro spiral-flow sedimentation is used in the sulfur sedimentation stage. Thus, the sedimentation rate is increased, the requirements for the volume of a sedimentation area are effectively reduced, the volume of equipment is reduced, the process flow is shortened, and the desulfurization efficiency is improved. The invention is suitable for popularization and use on marine platforms.

Description

technical field [0001] The invention relates to a compact natural gas desulfurization device and a desulfurization process thereof, and belongs to the technical field of natural gas desulfurization treatment on offshore oil production platforms. Background technique [0002] Offshore oil production platforms will produce a large amount of associated natural gas during the production process. Since many oil production platforms do not have the ability to export natural gas, natural gas is usually used as the fuel for the power generation system of the oil production platform. However, the natural gas produced by many oil production platforms contains a large amount of hydrogen sulfide. If the natural gas is burned without treatment, it will not only cause direct damage to the equipment, but also cause huge damage to the environment when the combustion products are discharged directly into the atmosphere. [0003] The traditional natural gas desulfurization process includes bu...

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Problems solved by technology

[0003] The traditional natural gas desulfurization process includes buffer pretreatment process, rich liquid degassing process, sedimentation control process, and chemical regeneration process. Each process usually requires an independent equipment, so it requires a lot of equipment, making the overall equipment volume Too large, difficult to promote in the narrow space of the platform

In the traditional natural gas desulfurization process, the following problems are often encountered: 1. In the rich liquid degassing process, more natural gas dissolved in the rich liquid is not easy to be precipitated; 2. In the settlement control process, the sedimentation velocity of the rich liquid is not uniform. It is not conducive to the forced settlement of sulfur particles, resulting in a low relative content of solid sulfur in the sulfur-rich liquid; 3. In the process of chemical regeneration, due to the use of one-time chemical regeneration, the loss of chemical is relatively large

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