Alstom Technology Limited

General Electric Technology Gmbh

Michael Koch

Joseph Paul Naumovitz

Peter Ulrich Koss

Jon K Bockman

A system () for removing carbon dioxide (CO2) from a gas stream by bringing the gas stream into contact with a circulating ammoniated solution stream such that CO2 is absorbed in said ammoniated solution, characterized in that the system comprises a membrane purifier (), said membrane purifier having a first compartment () and a second compartment (), wherein said first and second compartment are separated by a semipermeable membrane (), a method for removing carbon dioxide (CO2) from a gas stream by bringing the gas stream into contact with a circulating ammoniated solution stream such that CO2 is absorbed in said ammoniated solution, said method comprising the step of separating trace components from a circulating solution using a semipermeable membrane, and the use of a membrane purifier having a first and a second compartment, wherein said first and a second compartments are separated by a semipermeable membrane, for reducing the trace component and/or water content of a circulating solution stream in a method or system for removing carbon dioxide (CO2) using a circulating ammoniated solution.

Trace component removal in CO2 removal processes by means of a semipermeable membrane

A method for reducing energy requirements of a COcapture system comprises: contacting a flue gas stream with a COlean absorbent stream in an absorber, thereby removing COfrom the flue gas and providing a COrich absorbent stream; heating a first portion of the COrich absorbent stream using heat from the COlean absorbent stream, and providing the heated first portion of the COrich absorbent stream to a regenerator; providing a second portion of the COrich absorbent stream to the regenerator, wherein the heated first portion is hotter than the second portion and the heated first portion is provided to the regenerator at a lower elevation in the regenerator relative to that of the second portion.

[object Object]

A system is arranged to remove carbon dioxide (CO2) from a gas stream by bringing the gas stream into contact with a circulating ammoniated solution stream such that CO2 is removed from the gas stream by the ammoniated solution stream. A method of removing non-volatile compounds from the circulating ammoniated solution stream includes: introducing a portion of the circulating ammoniated solution stream into a gas-liquid separating device; and separating the introduced ammoniated solution into an ammonia rich gas phase and a liquid phase comprising the non-volatile compounds; and reintroducing the ammonia rich gas phase into the circulating ammoniated solution stream.

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Oslo, Norway

Michael Koch