Systems for compressing a gas

Abstract

Systems for efficiently compressing a gas are included. In one embodiment, a system includes a carbonous gas compression system and a vapor absorption chiller (VAC). The carbonous gas compression system comprises a compressor configured to compress the carbonous gas. The VAC is configured to circulate a coolant through at least one coolant path through the carbonous gas compression system. Utilization of the VAC may aid in cooling the carbonous gas, which may allow for less energy to be expended by the compression system.

1 . A system, comprising:
 a carbonous gas compression system comprising a compressor configured to compress the carbonous gas; and   a vapor absorption chiller (VAC) configured to circulate a coolant through at least one coolant path through the carbonous gas compression system.   
     
     
         2 . The system of  claim 1 , wherein the carbonous gas comprises carbon dioxide that is at least approximately 60 percent pure by volume. 
     
     
         3 . The system of  claim 1 , wherein the carbonous gas compression system comprises a heat exchanger in a gas path upstream of the compressor, and the at least one coolant path of the VAC extends through the heat exchanger. 
     
     
         4 . The system of  claim 3 , wherein the heat exchanger upstream of the compressor comprises a heated water heat exchanger. 
     
     
         5 . The system of  claim 3 , wherein the heat exchanger upstream of the compressor comprises a chilled water heat exchanger. 
     
     
         6 . The system of  claim 1 , wherein the carbonous gas compression system comprises a chilled water heat exchanger and a heated water heat exchanger in a gas path upstream of the compressor, and the at least one coolant path of the VAC comprises a chilled temperature coolant path extending through the first chilled water heat exchanger and a heated temperature coolant path extending through the heated water heat exchanger. 
     
     
         7 . The system of  claim 1 , wherein the carbonous gas compression system comprises a first chilled water heat exchanger in a gas path downstream of the compressor, a second chilled water heat exchanger and a heated water heat exchanger in the gas path upstream of the compressor, and the at least one coolant path of the VAC comprises a chilled temperature coolant path extending through the first chilled water heat exchanger and through the second chilled water heat exchanger, and a heated temperature coolant path extending through the heated water heat exchanger. 
     
     
         8 . The system of  claim 1 , wherein the carbonous gas compression system is configured to liquefy the carbonous gas. 
     
     
         9 . The system of  claim 8 , wherein the carbonous gas compression system comprises a liquid pump configured to raise the pressure of the liquefied carbonous gas to a super critical pressure. 
     
     
         10 . The system of  claim 8 , wherein the carbonous gas compression system comprises a plurality of compression stages with respective compressors, the carbonous gas compression system comprises a heat exchanger in a gas path between the plurality of compression stages and the liquid pump, and wherein the at least one coolant path extends through the heat exchanger. 
     
     
         11 . The system of  claim 1 , wherein the VAC comprises an evaporator configured to boil a refrigerant, an absorber configured to generate a refrigerant vapor from the refrigerant, a generator configured to transfer heat to the refrigerant vapor, and a condenser configured to liquefy the refrigerant vapor. 
     
     
         12 . A system, comprising:
 a carbonous gas capture system configured to extract a carbonous gas;   a carbonous gas compression system comprising a compressor configured to receive the carbonous gas from the carbonous gas capture system and to compress and liquefy the carbonous gas;   a vapor absorption chiller (VAC) configured to circulate a coolant through at least one coolant path through the carbonous gas compression system; and   a carbon sequestration system or an enhanced oil recovery (EOR) pipeline configured to receive the carbonous gas compressed and liquefied by the carbonous gas compression system.   
     
     
         13 . The system of  claim 12 , wherein the carbonous gas comprises carbon dioxide that is at least approximately 60 percent pure by volume. 
     
     
         14 . The system of  claim 12 , wherein the carbonous gas compression system comprises a heat exchanger in a gas path upstream of the compressor, and the at least one coolant path of the VAC extends through the heat exchanger. 
     
     
         15 . The system of  claim 12 , wherein the carbonous gas compression system comprises a heat exchanger in a gas path downstream of the compressor, and the coolant path extends through the heat exchanger. 
     
     
         16 . The system of  claim 12 , comprising a liquid pump configured to raise the pressure of the liquefied carbonous gas compressed by the carbonous gas compression system to a supercritical pressure, wherein the carbonous gas compression system comprises a plurality of compression stages with respective compressors and with at least one heat exchanger in a gas path between the plurality of compression stages and the liquid pump, and the at least one coolant path extends through the heat exchanger. 
     
     
         17 . The system of  claim 12 , wherein the at least one coolant path comprises a chilled temperature coolant path extending through a chilled water heat exchanger in a gas path upstream of the compressor, and a heated temperature coolant path extending through a heated water heat exchanger in the gas path upstream of the compressor. 
     
     
         18 . A system, comprising:
 a carbon dioxide (CO 2 ) compression system comprising a compressor configured to compress the CO 2 ;   a vapor absorption chiller (VAC) configured to circulate a coolant through at least one coolant path through the CO 2  compression system; and   a liquid pump configured to raise the pressure of the CO 2 .   
     
     
         19 . The system of  claim 18 , wherein the CO 2  is converted to a supercritical liquid. 
     
     
         20 . The system of  claim 18 , wherein the CO 2  compression system comprises a heat exchanger in a gas path upstream of the compressor, and the at least one coolant path of the VAC extends through the heat exchanger.