(US10343107) Separating carbon dioxide and hydrogen sulfide from a natural gas stream using co-current contacting systems 机翻标题: 暂无翻译,请尝试点击翻译按钮。

源语言标题
(US10343107) Separating carbon dioxide and hydrogen sulfide from a natural gas stream using co-current contacting systems
公开号/公开日
US10343107 US20170157553 / 2019-07-09 2017-06-08
申请号/申请日
US15/433,168 / 2017-02-15
发明人
NORTHROP PAUL SCOTT MART CHARLES J CULLINANE J TIM
申请人
EXXONMOBIL UPSTREAM RESEARCH
主分类号
IPC分类号
B01D-045/16 B01D-053/14 B01D-053/18 B01D-053/62 B01F-003/04 B01F-005/04 C01B-017/04 C01B-017/16 C01B-032/50 C10L-003/10 E21B-043/16 E21B-043/40
摘要
(US10343107)
Systems and methods for separating CO2 and H2S from a natural gas stream are provided herein. The system includes a first loop of co-current contacting systems configured to remove H2S and CO2 from a natural gas stream and a second loop of co-current contacting systems configured to remove the H2S from the CO2.
机翻摘要
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地址
代理人
(US10343107) ExxonMobil Upstream Research Company—Law Department
代理机构
优先权号
2013US-61821618 2014US-14268432 2017US-15433168
主权利要求
(US10343107)
What is claimed is:
1. A system for separating H2S and CO2 from a natural gas stream, comprising: 
 a first loop of co-current contacting systems configured to remove H2S and CO2 from a natural gas stream, the first loop of co-current contacting systems including 
  a first series of co-current contacting systems configured to remove the H2S and the CO2 from the natural gas stream by contacting the natural gas stream with a solvent stream, providing for incorporation of the H2S and the CO2 from the natural gas stream into the solvent stream, and; 
  a second series of co-current contacting systems configured to remove the H2S and the CO2 from the solvent stream, wherein the solvent stream is recirculated to the first series of co-current contacting systems; and 
 a second loop of co-current contacting systems configured to remove the H2S from the CO2, the second loop of co-current contacting systems including 
  a third series of co-current contacting systems configured to remove the H2S from the CO2 by contacting the H2S and the CO2 with an H2S-selective solvent stream, providing for incorporation of the H2S into the H2S-selective solvent stream, and 
  a fourth series of co-current contacting systems configured to remove the H2S from the H2S-selective solvent stream, wherein the H2S-selective solvent stream is recirculated to the third series of co-current contacting systems; 
 wherein each of the co-current contacting systems includes 
 a co-current contactor located in-line within a pipe, the co-current contactor including 
  a mixer, including 
   an annular support ring configured to maintain the mixer within the pipe, 
   a number of radial blades extending from the annular support ring and configured to allow a liquid stream to flow into the mixer, and 
   a central gas entry cone supported by the number of radial blades and configured to allow a gas stream to flow through a hollow section within the mixer, and 
  a mass transfer section downstream of the mixer, 
  wherein the mixer and the mass transfer section provide for efficient incorporation of liquid droplets formed from the liquid stream into the gas stream; and 
 a separation system configured to remove the liquid droplets from the gas stream.
2. The system of claim 1, further comprising: 
 a hollow channel in the annular support ring and the plurality of radial blades, the hollow channel being configured to permit the liquid stream to be flowed therethrough into the mixer; and 
 injection orifices disposed on the plurality of radial blades, the injection orifices being configured to thereby inject the liquid stream into the gas stream.
3. The system of claim 1, further comprising gas exit slots included in the plurality of radial blades, wherein a first portion of the gas stream flows through a hollow section in the central gas entry cone and through the gas exit slots.
4. A system for separating CO2 and H2S from a natural gas stream, comprising: 
 a first series of co-current contacting systems configured to contact a sour natural gas stream comprising CO2 and H2S with a lean solvent stream to generate a sweetened natural gas stream and a rich solvent stream comprising the CO2 and the H2S; 
 a second series of co-current contacting systems configured to contact the rich solvent stream with a stripping gas to regenerate the lean solvent stream and generate a first gas stream comprising the CO2, the H2S, and the stripping gas, wherein the lean solvent stream is recirculated to the first series of co-current contacting systems; 
 a third series of co-current contacting systems configured to contact the first gas stream with a lean H2S-selective solvent stream to generate a rich H2S-selective solvent stream comprising the H2S and a second gas stream comprising the CO2 and the stripping gas; and 
 a fourth series of co-current contacting systems configured to contact the rich H2S-selective solvent stream with a stripping gas to regenerate the lean H2S-selective solvent stream and generate a third gas stream comprising the H2S and the stripping gas, wherein the lean H2S-selective solvent stream is recirculated to the third series of co-current contacting systems; 
 wherein each of the first series of co-current contacting systems, the second series of co-current contacting systems, the third series of co-current contacting systems, and the fourth series of co-current contacting systems includes a number of co-current contacting systems connected in series; and 
 wherein each of the number of co-current contacting systems includes: 
 a co-current contactor located in-line within a pipe, the co-current contactor including: 
  a mixer, including: 
   an annular support ring configured to maintain the mixer within the pipe; 
   a number of radial blades extending from the annular support ring and configured to allow a liquid stream to flow into the mixer; and 
   a central gas entry cone supported by a number of radial blades and configured to allow a gas stream to flow through a hollow section within the mixer; and 
  a mass transfer section downstream of the mixer; 
  wherein the mixer and the mass transfer section provide for efficient incorporation of liquid droplets formed from the liquid stream into the gas stream; and 
 a separation system configured to remove the liquid droplets from the gas stream.
5. The system of claim 4, wherein the separation system comprises a cyclonic separator.
6. The system of claim 4, wherein a downstream portion of the central gas entry cone comprises a blunt ended cone.
7. The system of claim 4, wherein a downstream portion of the central gas entry cone comprises a tapered ended cone.
8. The system of claim 4, wherein the H2S-selective solvent stream comprises a tertiary amine.
9. The system of claim 4, wherein the H2S-selective solvent stream comprises a sterically-hindered amine.
10. The system of claim 4, wherein the stripping gas comprises nitrogen.
11. The system of claim 4, wherein the system comprises a CO2 separation system configured to remove the CO2 from the second gas stream to recover a final CO2 product.
12. The system of claim 11, wherein the stripping gas from the second gas stream is recirculated to the second series of co-current contacting systems.
13. The system of claim 4, wherein the system comprises a H2S separation system configured to remove the H2S from the third gas stream to recover a final H2S product.
14. The system of claim 13, wherein the stripping gas from the third gas stream is recirculated to the fourth series of co-current contacting systems.
15. The method of claim 4, wherein the liquid stream is flowed into the co-current contactor via a hollow channel in the annular support ring and the plurality of radial blades, and further comprising: 
 injecting the liquid stream into the gas stream via injection orifices disposed on the plurality of radial blades.
16. The method of claim 4, wherein a first portion of the gas stream flows through a hollow section in the central gas entry cone and through gas exit slots included in the plurality of radial blades.
法律状态
GRANTED
专利类型码
B2 A1
国别省市代码
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