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Device and method for acid gas concentration, desalination and separation after regeneration of desulfurization liquid

A separation method and desulfurization liquid technology are applied in the field of desalination and separation devices and acid gas concentration to achieve the effects of reducing construction costs, reducing carbon emissions and increasing enrichment concentration.

Active Publication Date: 2016-04-13
南通东湖国际商务服务有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Process simulation and optimization of solvent regeneration unit [J]. Zhongwai Energy, 2011, 16(9):86-89.) and others have also elaborated on this aspect; this is also a relatively common treatment method for desorbed gas at present , but usually, a large-scale oil and gas field or some small marginal gas fields have more than one set of natural gas desulfurization devices. The desulfurization devices are generally arranged near the main device, but the matching sulfur recovery devices are located The "farther" location and the sulfur recovery process have requirements for the concentration of hydrogen sulfide. High-concentration hydrogen sulfide can not only produce higher-quality sulfur but also save a lot of cost. In addition, the desulfurization liquid has a stable Therefore, it is urgent to develop a sour gas treatment and separation device after desulfurization liquid regeneration that can solve these problems, so as to facilitate the efficient regeneration of desulfurization liquid and subsequent sulfur production

Method used

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  • Device and method for acid gas concentration, desalination and separation after regeneration of desulfurization liquid

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Embodiment Construction

[0012] The implementation of the present invention will be further described below in conjunction with the accompanying drawings.

[0013] As shown in the accompanying drawings, the device of the present invention includes a regeneration tower 1, one-way gas valves 2, 8, 18, water cooler 3, separation tank 4, one-way liquid valves 5, 20, 23, 31, 35, 36, 37. Corrosion-resistant liquid pumps 6, 32, reboilers 7, compressors 9, 29, pressure control valves 10, 11, 30, hydrate reaction units 12, 13, stop valves 14, 15, 17, 27, 28, Slurry pump 16, hydrate decomposition unit 19, filtration unit 21, two-way liquid valve 22, ice making device 24, grinding device 25, water pump 26, refrigerator 33, hydrate and salt separation unit 34, the separation method specifically includes The following aspects.

[0014] (1) After the water passes through the ice making device 24 and the ice making and grinding device 25, it is ground into a mixture of ice and water, and after dosing (300mg / L SDS s...

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Abstract

The invention belongs to the technical field of gas separation and water treatment, in particular to a device and method for acid gas concentration, desalination and separation after doctor solution regeneration. The device comprises a regeneration tower, a one-way gas valve, a water cooler, a knockout drum, a one-way liquid valve, a corrosion-resistant liquid pump, a reboiler, a compressor, a pressure control valve, a hydrate reaction unit, a stop valve, a slurry pump, a hydrate decomposition unit, a filter unit, a two-way liquid valve, an ice-making device, a grinding device, a water pump, a refrigerator and a hydrate and salt separation unit. Two hydrate reactors are adopted to respectively fix hydrogen sulfide or carbon dioxide released after the doctor solution regeneration, the enrichment concentrations of two gases are increased, the quality of subsequent sulphur preparation is improved, and cost is saved; by the utilization of the desalination effect in the hydrate forming process, thermal stable salts generated in the desulfuration and regeneration process of most of the doctor solution can be removed, loss of desulfurizer in the doctor solution is little, and most of the desulfurizer can be recycled.

Description

technical field [0001] The invention belongs to the technical field of gas separation and water treatment, and specifically refers to a device and method for acid gas enrichment, desalination and separation after desulfurization liquid absorbing hydrogen sulfide and carbon dioxide in natural gas is regenerated in a regeneration tower. Background technique [0002] Natural gas extracted from oil and gas fields needs to be desulfurized and deacidified to meet pipeline transportation standards. Currently, the methods used for desulfurization of natural gas mainly include chemical-physical solvent method, direct conversion method, molecular sieve method, membrane separation method, etc. Among them, the chemical-physical solvent method is due to It has the advantages of fast absorption rate, large processing capacity, and high removal rate of hydrogen sulfide and carbon dioxide, and is the most commonly used method in practice. [0003] There are generally two processes for desul...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01D53/96B01D53/74B01D53/52B01D53/62B01D53/00
Inventor 周诗岽余益松吴志敏王树立李恩田何双双
Owner 南通东湖国际商务服务有限公司
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