Process and apparatus for the separation of a gaseous mixture
OwnerArthur Darde, Bao Ha +1inventors
InventorsArthur Darde, Bao Ha, Jean-Pierre Tranier
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Abstract
A process for separating carbon dioxide from a compressed, dried and cooled carbon dioxide containing fluid comprises separating the fluid into at least a carbon dioxide enriched stream, and a carbon dioxide depleted stream, expanding at least part of the carbon dioxide lean stream in an expander, compressing a process stream wherein the power for the compression step is at least in part provided by the power generated by the expander.
Claims14
A process for separating carbon dioxide from a compressed, dried, and cooled carbon dioxide containing fluid comprising the steps of:
- i) separating the fluid into at least a carbon dioxide enriched stream, and at least a carbon dioxide depleted stream;
- ii) expanding at least part of the carbon dioxide depleted stream in an expander;
- and
- iii) compressing a stream chosen from the group comprising the fluid upstream of step i) and at least part of one of the streams of step i),
- wherein the power for the compression step iii) is at least in part provided by the power generated by the expander of step ii).
The process of claim 3, wherein the carbon dioxide depleted stream is richer in carbon dioxide than another stream separated in step i).
An apparatus for separating carbon dioxide from a flue gas comprising:
- i) a separation unit for separating the flue gas into at least a carbon dioxide enriched stream, and at least a carbon dioxide depleted stream;
- ii) an expander and a conduit for sending at least part of the carbon dioxide depleted stream in the expander to be expanded;
- and
- iii) a compressor and a conduit for sending at least part of one of the streams of step i) to the compressor wherein the compressor is coupled to the expander.
Dependencies are inferred from the claim text.