System and method for high efficiency power generation using a carbon dioxide circulating working fluid
US-10018115-B2 · Jul 10, 2018 · US
Direct-fired supercritical carbon dioxide power generation system and method
US11466618B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-11466618-B2 |
| Application number | US-201917288213-A |
| Country | US |
| Kind code | B2 |
| Filing date | Sep 30, 2019 |
| Priority date | Oct 25, 2018 |
| Publication date | Oct 11, 2022 |
| Grant date | Oct 11, 2022 |
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- Title
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Abstract
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The present invention provides a direct-fired supercritical carbon dioxide power generation system and a power generation method thereof, the system comprising: a combustor for burning hydrocarbon fuel and oxygen; a turbine driven by combustion gas discharged from the combustor; a heat exchanger for cooling combustion gas discharged after driving the turbine, by heat exchange with combustion gas recycled and supplied to the combustor; and an air separation unit for separating air to produce oxygen, wherein a portion of the combustion gas discharged after driving the turbine is branched before being introduced to the heat exchanger and is supplied to the air separation unit.
First claim
Opening claim text (preview).
The invention claimed is: 1. A direct-fired supercritical carbon dioxide power generation system comprising: a combustor for burning hydrocarbon fuel and oxygen; a turbine driven by combustion gas discharged from the combustor; a heat exchanger for cooling combustion gas discharged after driving the turbine, by heat exchange with combustion gas recycled and supplied to the combustor; and an air separation unit for separating air to produce the oxygen, wherein a portion of the combustion gas discharged after driving the turbine is branched before being introduced to the heat exchanger and is supplied directly to the air separation unit without additional heating, wherein the combustion gas discharged after driving the turbine has a temperature of 750° C., wherein the combustion gas discharged from the combustor has a temperature of 1,150° C., and wherein the combustion gas discharged from the combustor has a pressure of about 300 bar. 2. The direct-fired supercritical carbon dioxide power generation system according to claim 1 , wherein the air separation unit is an ion transport membrane unit. 3. The direct-fired supercritical carbon dioxide power generation system according to claim 2 , wherein combustion gas supplied to the air separation unit is used as sweeping gas at an ion transport membrane. 4. The direct-fired supercritical carbon dioxide power generation system according to claim 3 , wherein combustion gas used as the sweeping gas is mixed with the oxygen generated at the ion transport membrane and is supplied to the combustor. 5. The direct-fired supercritical carbon dioxide power generation system according to claim 1 , wherein the turbine is formed of a ceramic matrix composite (CMC). 6. The direct-fired supercritical carbon dioxide power generation system according to claim 1 , wherein the combustion gas discharged after driving the turbine has a pressure of about 30 bar. 7. A direct-fired supercritical carbon dioxide power generation method comprising: burning hydrocarbon fuel and oxygen in a combustor; driving a turbine by combustion gas discharged from the combustor; cooling combustion gas discharged after driving the turbine in a heat exchanger, by heat exchange with combustion gas recycled and supplied to the combustor; and separating air to produce the oxygen in an air separation unit, wherein a portion of the combustion gas discharged after driving the turbine is branched before being introduced to the heat exchanger and is supplied directly to the air separation without additional heating, wherein the combustion gas discharged after driving the turbine has a temperature of 750° C., wherein the combustion gas discharged from the combustor has a temperature of 1,150° C., and wherein the combustion gas discharged from the combustor has a pressure of about 300 bar. 8. The direct-fired supercritical carbon dioxide power generation method according to claim 7 , wherein the air separation unit is an ion transport membrane unit. 9. The direct-fired supercritical carbon dioxide power generation method according to claim 8 , wherein combustion gas supplied to the air separation unit is used as sweeping gas at an ion transport membrane. 10. The direct-fired supercritical carbon dioxide power generation method according to claim 9 , wherein combustion gas used as the sweeping gas is mixed with the oxygen generated at the ion transport membrane and is supplied to the combustor. 11. The direct-fired supercritical carbon dioxide power generation method according to claim 7 , wherein the combustion gas discharged after driving the turbine has a pressure of about 30 bar. 12. The direct-fired supercritical carbon dioxide power generation method according to claim 7 , wherein the turbine is formed of a ceramic matrix composite (CMC).
Assignees
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Classifications
Plural gas-turbine plants; Combinations of gas-turbine plants with other apparatus; Adaptations of gas-turbine plants for special use · CPC title
Gas-turbine plants providing heated or pressurised working fluid for other apparatus, e.g. without mechanical power output (F02C6/18 takes precedence {; for a fluidised-bed combustor F02C3/205}) · CPC title
of working fluid · CPC title
using a special fuel, oxidant, or dilution fluid to generate the combustion products · CPC title
Fuel supply systems · CPC title
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Frequently asked questions
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- What does patent US11466618B2 cover?
- The present invention provides a direct-fired supercritical carbon dioxide power generation system and a power generation method thereof, the system comprising: a combustor for burning hydrocarbon fuel and oxygen; a turbine driven by combustion gas discharged from the combustor; a heat exchanger for cooling combustion gas discharged after driving the turbine, by heat exchange with combustion ga…
- Who is the assignee on this patent?
- Korea Inst Energy Res
- What technology area does this patent fall under?
- Primary CPC classification F02C3/34. Mapped technology areas include Mechanical Engineering.
- When was this patent published?
- Publication date Tue Oct 11 2022 00:00:00 GMT+0000 (Coordinated Universal Time) (B2). Legal status and post-grant events are not shown on this page.
- What related patents are in patentsdb?
- We list 6 related publications on this page (citations in our corpus or others sharing the same primary CPC).