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US 8,475,571 B2Granted
System for gas purification and recovery with multiple solvents
AssigneeGeneral Electric Company
InventorsJudith Pauline Oppenheim, Anindra Mazumdar
Life of this patent
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Abstract
In one embodiment, a gas purification system is provided. The system includes a first solvent section having a first carbon dioxide (CO2) absorber, a hydrogen sulfide (H2S) absorber, and a first solvent path that routes a first solvent through the first CO2 absorber and the H2S absorber. The gas purification system also includes a second solvent section having a second carbon dioxide (CO2) absorber and a second solvent path that flows a second solvent through the second CO2 absorber. The gas purification system has a gas path though the first and second solvent sections, wherein the first and second solvent paths are separate from one another, and the first and second solvents are different from one another.
Claims24
A gas purification system, comprising:
- a first solvent section, comprising:
- a first carbon dioxide (CO2) absorber;
- a hydrogen sulfide (H2S) absorber;
- a first solvent path that routes a first physical solvent through the first CO2 absorber and the H2S absorber;
- and
- a second solvent section, comprising:
- a second carbon dioxide (CO2) absorber;
- a second solvent path that flows a second physical solvent through the second CO2 absorber;
- and
- a gas path through the first and second solvent sections, wherein the first and second solvent paths are separate from one another, and the first and second physical solvents are different from one another,
- wherein the gas path has a gas flow direction sequentially through the H2S absorber, the first CO2 absorber, and the second CO2 absorber.
8 more elements
A gas purification system, comprising:
- a first solvent section comprising a first solvent path and a first gas path, wherein the first solvent path circulates a first solvent to remove hydrogen sulfide (H2S) from the first gas path;
- a second solvent section comprising a second solvent path and a second gas path, wherein the second solvent path is configured to remove carbon dioxide (CO2) and water from the second gas path, wherein the first and second solvent paths are separate from one another, the first and second solvents are different physical solvents, the first gas path leads to the second gas path, and the first and second gas paths collectively comprise a gas flow direction sequentially through an H2S absorber, a first CO2 absorber, and a second CO2 absorber.
A gas purification system, comprising:
- a first solvent section, comprising:
- a first carbon dioxide (CO2) absorber;
- a hydrogen sulfide (H2S) absorber;
- a dimethyl ether of polyethylene glycol (DEPG) path that routes DEPG through the first CO2 absorber and the H2S absorber;
- and
- a second solvent section, comprising:
- a second carbon dioxide (CO2) absorber;
- a methanol path that flows methanol through the second CO2 absorber;
- and
- a syngas path sequentially through the first and second solvent sections, wherein the DEPG solvent path and the methanol solvent path are separate from one another, and wherein the syngas path has a gas flow direction sequentially through the H2S absorber, the first CO2, absorber, and the second CO2 absorber.
7 more elements
A gas purification system, comprising:
- a first solvent section, comprising:
- a first carbon dioxide (CO2) absorber;
- a hydrogen sulfide (H2S) absorber;
- a first solvent path that routes a first solvent through the first CO2 absorber and the H2S absorber;
- and
- a second solvent section, comprising:
- a second carbon dioxide (CO2) absorber;
- a second solvent path that flows a second solvent through the second CO2 absorber;
- and
- a gas path through the first and second solvent sections, wherein the first and second solvent paths are separate from one another, and the first and second physical solvents are different from one another,
- wherein the first solvent path diverges from the first CO2 absorber into a first intermediate path and a second intermediate path, wherein the first intermediate path routes the first solvent sequentially through the H2S absorber, a first flash tank, and a mixing chamber, wherein the second intermediate path routes the first solvent sequentially through a second flash tank, a H2S concentrator, and the mixing chamber.
8 more elements
A gas purification system, comprising:
- a first solvent section, comprising:
- a first carbon dioxide (CO2) absorber;
- a hydrogen sulfide (H2S) absorber;
- a dimethyl ether of polyethylene glycol (DEPG) path that routes DEPG through the first CO2 absorber and the H2S absorber;
- and
- a second solvent section, comprising:
- a second carbon dioxide (CO2) absorber;
- a methanol path that flows methanol through the second CO2 absorber;
- and
- a syngas path sequentially through the first and second solvent sections, wherein the DEPG solvent path and the methanol solvent path are separate from one another, and
- wherein the DEPG path diverges from the first CO2 absorber into a first intermediate path and a second intermediate path, wherein the first intermediate path routes the DEPG sequentially through the H2S absorber, a first flash tank, and a mixing chamber, wherein the second intermediate path routes the DEPG sequentially through a second flash tank, a H2S concentrator, and the mixing chamber, wherein the DEPG path routes the DEPG from the mixing chamber sequentially through a H2S flash tank and a DEPG recovery column.
8 more elements
Dependencies are inferred from the claim text.