System for removal of carbon dioxide from a process gas
First Claim
1. A system for removal of carbon dioxide from a process gas, the system comprising:
- an absorption vessel that receives a process gas and an ammoniated solution for contacting the process gas and the ammoniated solution in the absorption vessel such that at least a part of the CO2 of the process gas is captured by the ammoniated solution to provide a CO2 lean process gas and an ammoniated solution rich in CO2 without precipitation;
a first heat exchanger to cool the ammoniated solution rich in CO2 including captured carbon dioxide after it has exited the absorption vessel to precipitate solids from the ammoniated solution rich in CO2;
a separator to remove at least a part of any solids in the cooled ammoniated solution; and
a second heat exchanger to heat the ammoniated solution after it has exited the separator, wherein the heated ammoniated solution is returned to the lower portion of the absorption vessel.
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Accused Products
Abstract
A system for removal of carbon dioxide from a process gas includes an absorption arrangement arranged to allow contact between the process gas and an ammoniated solution within the absorption arrangement such that at least a part of the carbon dioxide of the process gas is captured by the ammoniated solution. The absorption arrangement is arranged to, with regard to the ammoniated solution, only accommodate ammoniated solution without solids. A first heat exchanger is arranged to cool the ammoniated solution including captured carbon dioxide after it has exited the absorption arrangement. A separator is arranged to remove at least a part of any solids in the cooled ammoniated solution. A second heat exchanger is arranged to heat the ammoniated solution after it has exited the separator and returned to the absorption arrangement.
62 Citations
15 Claims
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1. A system for removal of carbon dioxide from a process gas, the system comprising:
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an absorption vessel that receives a process gas and an ammoniated solution for contacting the process gas and the ammoniated solution in the absorption vessel such that at least a part of the CO2 of the process gas is captured by the ammoniated solution to provide a CO2 lean process gas and an ammoniated solution rich in CO2 without precipitation; a first heat exchanger to cool the ammoniated solution rich in CO2 including captured carbon dioxide after it has exited the absorption vessel to precipitate solids from the ammoniated solution rich in CO2; a separator to remove at least a part of any solids in the cooled ammoniated solution; and a second heat exchanger to heat the ammoniated solution after it has exited the separator, wherein the heated ammoniated solution is returned to the lower portion of the absorption vessel. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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12. A system for removal of carbon dioxide from a process gas, the system comprising:
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an absorption vessel that receives a process gas and an ammoniated solution for contacting the process gas and the ammoniated solution in the absorption vessel such that at least a part of the CO2 of the process gas is captured by the ammoniated solution to provide a CO2 lean process gas and an ammoniated solution rich in CO2 without precipitation;
the absorption vessel includes;a first absorption stage arranged to receive the process gas and contact it with a first part of the ammoniated solution; a second absorption stage arranged to receive process gas which has passed the first absorption stage and contact it with a second part of the ammoniated solution; a first sump vessel; and a second sump vessel; wherein said first absorption stage comprises a liquid collection receptacle arranged to collect ammoniated solution from the first absorption stage and deliver it to the first sump vessel, and said second absorption stage comprises a liquid collection receptacle arranged to collect ammoniated solution from the second absorption stage and deliver it to the second sump vessel; a first heat exchanger to cool the ammoniated solution rich in CO2 including captured carbon dioxide after it has exited the absorption vessel to precipitate solids from the ammoniated solution rich in CO2; a separator to remove at least a part of any solids in the cooled ammoniated solution; and a second heat exchanger to heat the ammoniated solution after it has exited the separator, wherein the heated ammoniated solution is returned to the absorption vessel. - View Dependent Claims (13, 14, 15)
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Specification