Method and apparatus for treating a gas stream containing an acid gas
AssigneeAlberta Research Council
InventorHongqi Yuan
Life of this patent
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Abstract
A method for treating a gas stream containing an acid gas, including immersing a permeable membrane having a plurality of pores in an absorption liquid containing a reactant chemical, and passing the gas stream through the pores in the permeable membrane so that the gas stream forms gas bubbles which float up through the absorption liquid and so that the acid gas in the gas stream reacts with the reactant chemical in the absorption liquid, thereby separating the acid gas from the gas stream. A gas absorption apparatus, including a housing adapted to hold an absorption liquid containing a reactant chemical, and a permeable membrane having a plurality of pores contained within the housing and adapted to be immersed in the absorption liquid.
Claims30
A method of treating a gas stream containing an acid gas, comprising:
- immersing a permeable membrane having a plurality of pores in an absorption liquid containing a reactant chemical, and passing the gas stream through the pores in the permeable membrane so that the gas stream forms gas bubbles which float up through the absorption liquid and so that the acid gas in the gas stream reacts with the reactant chemical in the absorption liquid, thereby separating the acid gas from the gas stream.
A method of treating a gas stream containing an acid gas, comprising:
- immersing a permeable membrane module in an absorption liquid containing an inorganic solvent as a reactant chemical, wherein the permeable membrane module is comprised of a plurality of hollow membrane loops each defining a permeable conduit, wherein each of the hollow membrane loops has a plurality of pores, filling the hollow membrane loops with the gas stream so that the gas stream passes through the pores to form gas bubbles which float up through the absorption liquid and so that the acid gas in the gas stream reacts with the reactant chemical in the absorption liquid, thereby separating the acid gas from the gas stream, and regenerating the reactant chemical.
A method of treating a gas stream containing carbon dioxide, comprising:
- immersing a permeable membrane module in an absorption liquid containing a reactant chemical comprising an inorganic solvent capable of reacting in a reversible reaction with carbon dioxide, wherein the permeable membrane module is comprised of a plurality of hollow membrane loops each defining a permeable conduit, wherein each of the hollow membrane loops has a plurality of pores, filling the hollow membrane loops with the gas stream so that the gas stream passes through the pores to form gas bubbles which float up through the absorption liquid and so that the carbon dioxide in the gas stream reacts with the reactant chemical in the absorption liquid, thereby separating the carbon dioxide from the gas stream, and regenerating the reactant chemical using a steam regeneration process.
A gas absorption apparatus, comprising:
- (a) a housing adapted to hold an absorption liquid containing a reactant chemical, the housing having a gas inlet and a gas outlet;
- and
- (b) a permeable membrane contained within the housing and adapted to be immersed in the absorption liquid, the permeable membrane comprising a plurality of hollow membrane loops connected with the gas inlet, each defining a permeable conduit and each having two opposed ends, each of the hollow membrane loops having a plurality of pores interposed between the gas inlet and the gas outlet.
Dependencies are inferred from the claim text.