Natural gas deacidification module

Abstract

The invention discloses a natural gas deacidification module. The natural gas deacidification module comprises an amine absorption tower, an amine liquid flash tank, a fuel gas tank, a first mechanical amine filter, an amine activated carbon filter, a second mechanical amine filter, a lean amine liquid heat exchanger, an amine regeneration tower, an amine buffer tank, an amine backflow collectiontank, a regeneration overhead condenser, a regeneration tower reflux pump, a lean amine liquid booster pump, a lean amine cooler and a tower bottom reboiler. According to the natural gas deacidification module, the technological process is optimized, part of redundant design is removed, so that system complexity and cost are reduced, the number of devices is reduced, besides, the highly integratedskid-mounted process of the module is realized by optimization of the technological process, the floor space is reduced, and production, transportation and field installation of the module are facilitated.

Description

technical field [0001] The invention relates to the field of natural gas liquefaction equipment, in particular to a natural gas deacidification module before natural gas liquefaction. Background technique [0002] The natural gas liquefaction unit includes: natural gas filtration metering dehydration demercury module, natural gas deacidification module, natural gas propane precooling module, natural gas mixed refrigerant module; Mercury, the feed gas is natural gas containing impurities, and the natural gas deacidification module is used to remove CO in the feed gas 2 and H 2 Sour gas such as S, natural gas propane pre-cooling module is used to pre-cool natural gas and mixed refrigerant, natural gas mixed refrigerant module is used to provide mixed refrigerant for deep cooling of natural gas, traditional natural gas deacidification module process system is complicated, there are The redundant design makes the system manufacturing cost higher, and the number of equipment is...

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Problems solved by technology

[0002] The natural gas liquefaction unit includes: natural gas filtration metering dehydration demercury module, natural gas deacidification module, natural gas propane precooling module, natural gas mixed refrigerant module; natural gas filtration metering dehydration demercury module is used for filtering, metering, dehydration Mercury, the feed gas is natural gas containing impurities, and the natural gas deacidification module is used to remove CO in the feed gas 2 and H 2 Sour gas such as S, natural gas propane pre-cooling module is used to pre-cool natural gas and mixed refrigerant, natural gas mixed refrigerant module is used to provide mixed refrigerant for deep cooling of natural gas, traditional natural gas deacidification module process system is complicated, there are Redundant design makes the system manufacturing cost higher, the number of equipment is large, and it cannot be well compact and rationally arranged

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