Spray process for the recovery of CO 2 from a gas stream and a related apparatus
First Claim
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1. A method for recovering carbon dioxide (CO2) from a gas stream, comprising the following steps:
- a) reacting CO2 in the gas stream with fine droplets of a liquid absorbent, so as to form a solid material in which the CO2 is bound;
b) transporting the solid material to a desorption site;
c) heating the solid material in the desorption site, to release substantially pure CO2 gas; and
d) collecting the CO2 gas.
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Abstract
A method for recovering carbon dioxide (CO2) from a gas stream is disclosed. The method includes the step of reacting CO2 in the gas stream with fine droplets of a liquid absorbent, so as to form a solid material in which the CO2 is bound. The solid material is then transported to a desorption site, where it is heated, to release substantially pure CO2 gas. The CO2 gas can then be collected and used or transported in any desired way. A related apparatus for recovering carbon dioxide (CO2) from a gas stream is also described herein.
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Citations
27 Claims
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1. A method for recovering carbon dioxide (CO2) from a gas stream, comprising the following steps:
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a) reacting CO2 in the gas stream with fine droplets of a liquid absorbent, so as to form a solid material in which the CO2 is bound; b) transporting the solid material to a desorption site; c) heating the solid material in the desorption site, to release substantially pure CO2 gas; and d) collecting the CO2 gas. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26)
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27. A method for recovering carbon dioxide (CO2) from a gas stream which originates at a coal-fired power plant or a gasification plant, comprising the following steps:
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A) reacting the CO2 with fine droplets of a liquid absorbent in a spray tower or in a venturi scrubber, so as to form a solid material in which the CO2 is bound; B) transporting the solid material to a desorption chamber; C) heating the solid material in the desorption chamber, to release substantially pure CO2 gas; and
to regenerate at least a portion of the liquid absorbent;D) collecting the CO2 gas; and E) directing the regenerated liquid absorbent back to the spray tower or venturi scrubber.
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Specification