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US 11,617,981 B1Granted
Method for capturing CO2 with assisted vapor compression
AssigneeSaudi Arabian Oil Company
InventorsMourad Younes, Ammar Alahmed, Abdullah Al Rammah, Aqil Jamal
Life of this patent
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Abstract
The present application provides processes and systems for direct capture of CO2 from an ambient air or a flue gas using large excess of steam and a vapor compression cycle.
Claims54
A method of capturing CO2 from a CO2-enriched gaseous stream, the method comprising:
- (i) contacting the CO2-enriched gaseous stream with a CO2-depleted solid hydrophobic sorbent material at about ambient temperature and at about ambient pressure, to produce a CO2-depleted gaseous stream and a CO2-enriched solid hydrophobic sorbent material;
- (ii) contacting the CO2-enriched solid hydrophobic sorbent material produced in step (i) with a stream of steam at a first pressure and a first temperature, to produce the CO2-depleted solid hydrophobic sorbent material and a CO2-enriched stream of steam;
- wherein the first temperature is greater than the ambient temperature, and the first pressure is equal or below the saturation pressure corresponding to the first temperature;
- (iii) compressing the CO2-enriched stream of steam produced in step (ii) to a second pressure and a second temperature, to produce a hot compressed CO2-enriched stream of steam;
- wherein the second temperature is greater than the first temperature, and the second pressure is greater than the first pressure;
- (iv) condensing the hot compressed CO2-enriched stream of steam produced in step (iii) to produce a stream of gaseous CO2 at about a third temperature, a stream of water at about the first pressure and a fourth temperature, and an amount of thermal energy;
- wherein the second temperature is greater than the third temperature and the fourth temperature, and the first temperature is greater than or about equal to the fourth temperature;
- (v) heating the stream of water produced in step (iv) to produce the stream of steam at the first pressure and the first temperature for use in step (ii) using the thermal energy produced in step (iv);
- and
- (vi) contacting the CO2-enriched solid hydrophobic sorbent material produced in step (i) with the stream of gaseous CO2 produced in step (iv) to produce a stream of gaseous CO2 at a fifth temperature and the CO2-enriched solid hydrophobic sorbent material produced in step (i) at a temperature lower than or equal to the first temperature for use in step (ii);
- wherein the fifth temperature is lower than the third temperature.
8 more elements
A method of capturing CO2 from a CO2-enriched gaseous stream, the method comprising:
- contacting the CO2-enriched gaseous stream with a CO2-depleted solid water-adsorbing sorbent material at about ambient temperature and at about ambient pressure, to produce a CO2-depleted gaseous stream and a CO2-enriched solid water-adsorbing sorbent material;
- (ii) contacting the CO2-enriched solid water-adsorbing sorbent material produced in step (i) with a stream of steam at a first pressure and a first temperature, to produce the CO2-depleted solid water-adsorbing sorbent material and a CO2-enriched stream of steam;
- wherein the first temperature is greater than the ambient temperature, and the first pressure is equal or below the saturation pressure corresponding to the first temperature;
- (iii) compressing the CO2-enriched stream of steam produced in step (ii) to a second pressure and a second temperature, to produce a hot compressed CO2-enriched stream of steam;
- wherein the second temperature is greater than the first temperature, and the second pressure is greater than the first pressure;
- (iv) condensing the hot compressed CO2-enriched stream of steam produced in step (iii) to produce a stream of gaseous CO2 at about a third temperature, a stream of water at about the first pressure and a fourth temperature, and an amount of thermal energy;
- wherein the second temperature is greater than the third temperature and the fourth temperature, and the first temperature is greater than or about equal to the fourth temperature;
- (v) heating the stream of water produced in step (iv) to produce the stream of steam at the first pressure and the first temperature for use in step (ii) using the thermal energy produced in step (iv);
- and
- (vi) contacting the CO2-enriched solid water-adsorbing sorbent material produced in step (i) with the stream of gaseous CO2 produced in step (iv) to produce a stream of gaseous CO2 at a fifth temperature and the CO2-enriched solid water-adsorbing sorbent material produced in step (i) at a temperature lower than or equal to the first temperature for use in step (ii);
- wherein the fifth temperature is lower than the third temperature.
8 more elements
A method of capturing CO2 from a CO2-enriched gaseous stream, the method comprising:
- contacting the CO2-enriched gaseous stream with a CO2-depleted sorbent material at about ambient temperature and at about ambient pressure, to produce a CO2-depleted gaseous stream and a CO2-enriched sorbent material;
- (ii) contacting the CO2-enriched sorbent material produced in step (i) with a stream of steam at a first pressure and a first temperature, to produce the CO2-depleted sorbent material and a CO2-enriched stream of steam;
- wherein the first temperature is greater than the ambient temperature, and the first pressure is equal or below the saturation pressure corresponding to the first temperature;
- (iii) compressing the CO2-enriched stream of steam produced in step (ii) to a second pressure and a second temperature, to produce a hot compressed CO2-enriched stream of steam;
- wherein the second temperature is greater than the first temperature, and the second pressure is greater than the first pressure;
- (iv) condensing the hot compressed CO2-enriched stream of steam produced in step (iii) to produce a stream of gaseous CO2 at about a third temperature, an initially formed stream of water at the second pressure, and an amount of thermal energy;
- (v) decompressing the initially formed stream of water at the second pressured in step (iv) to form a stream of water at about the first pressure and the fourth temperature;
- wherein the second temperature is greater than the third temperature and the fourth temperature, and the first temperature is greater than or about equal to the fourth temperature;
- (vi) heating the stream of water produced in step (v) to produce the stream of steam at the first pressure and the first temperature for use in step (ii) using the thermal energy produced in step (iv);
- and
- (vii) contacting the CO2-enriched sorbent material produced in step (i) with the stream of gaseous CO2 produced in step (iv) to produce a stream of gaseous CO2 at a fifth temperature and the CO2-enriched sorbent material produced in step (i) at a temperature lower than or equal to the first temperature for use in step (ii);
- wherein the fifth temperature is lower than the third temperature.
9 more elements
A method of capturing CO2 from a CO2-enriched gaseous stream, the method comprising:
- (i) contacting the CO2-enriched gaseous stream with a CO2-depleted sorbent material at about ambient temperature and at about ambient pressure, to produce a CO2-depleted gaseous stream and a CO2-enriched sorbent material;
- (ii) contacting the CO2-enriched sorbent material produced in step (i) with a stream of steam at a first pressure and a first temperature, to produce the CO2-depleted sorbent material and a CO2-enriched stream of steam;
- wherein the first temperature is greater than the ambient temperature, and the first pressure is equal or below the saturation pressure corresponding to the first temperature;
- (iii) compressing the CO2-enriched stream of steam produced in step (ii) to a second pressure and a second temperature, to produce a hot compressed CO2-enriched stream of steam;
- wherein the second temperature is greater than the first temperature, and the second pressure is greater than the first pressure;
- (iv) condensing the hot compressed CO2-enriched stream of steam produced in step (iii) to produce a stream of gaseous CO2 at about a third temperature, a stream of water at about the first pressure and a fourth temperature, and an amount of thermal energy;
- wherein the second temperature is greater than the third temperature and the fourth temperature, and the first temperature is greater than or about equal to the fourth temperature;
- (v) heating the stream of water produced in step (iv) to produce the stream of steam at the first pressure and the first temperature for use in step (ii) using the thermal energy produced in step (iv);
- (vi) contacting the CO2-enriched sorbent material produced in step (i) with the stream of gaseous CO2 produced in step (iv) to produce a stream of gaseous CO2 at a fifth temperature and the CO2-enriched sorbent material produced in step (i) at a temperature lower than or equal to the first temperature for use in step (ii);
- wherein the fifth temperature is lower than the third temperature;
- and
- (vii) using a stream of liquid water at the fifth temperature to cool the CO2-depleted sorbent material produced in step (ii) from about the first temperature to about the fifth temperature.
9 more elements
Dependencies are inferred from the claim text.