Gas separation device
AssigneeMcMaster University
InventorsElena N. Komkova, Alicja M. Mika, Ronald F. Childs
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Abstract
Disclosed is a separation device for the separation of water vapour from a gas stream, comprising a water vapour separation membrane having a porous membrane, whose pores contain a water transfer material, the water transfer material including a first hydrophilic polymer and a second polymer which is interwoven with the first polymer.
Claims54
A separation device for the separation of water vapour from a gas stream, comprising a separation membrane having a porous support whose pores contain a water swellable gel, the gel including a first water absorbent polymer and a second polymer which is interwoven with the first polymer to improve the water absorbing and transfer capability of the gel.
A separation device for the separation of water vapour from a gas stream, comprising:
- a porous support whose pores contain a water transfer gel;
- said water transfer gel including a first polymer and a second polymer which is interwoven with the first polymer;
- the first polymer being different from the second polymer, and each being selected from the group consisting of:
- polycation is selected from the group consisting of poly(2-hydroxypropyl-1-N-methylammonium) salts, poly(2-hydroxypropyl-1,1-N-methylammonium) salts, poly(N-vinylimidazolinum) salts, poly(diallyldimethylammonium) salts, protonated or quaternized poly(N,N-dimethyl-2-aminoethyl methacrylate), poly(N,N-dimethylaminopropyl)-methacrylamide), poly(4-vinylpyridinium) salts, poly(vinylbenzyl ammonium) salts, poly(allylamine) hydrochloride, poly(ethyleneimine), poly(allylamine)poly[N-(dimethylaminoethyl)-acrylamide], poly(allylamine), poly(vinylbenzylamines), and natural polyamines including poly-L-lysine which are protonated in water to form polycations;
- a polyanion selected from acids or salts of poly(acrylic acid), poly(methacrylic acid), poly(styrene sulfonic acid), poly(vinylsulfonic acid) and natural polyacids poly(alginic acid) and chitosan and their salts;
- a neutral polymer selected from poly(vinyl alcohol), poly(ethylene oxide), polyacrylamide, poly(vinylpyrrolidone), cellulose derivatives including cellulose acetate and natural polymers including agar-agar;
- a polymer which can ionize in water to form a polyanion or polycation;
- and
- an amphoteric polymer;
- and
- provided that the first and second polymers do not form a combination of a polyanion and a polycation.
A separation device for the separation of water vapour from a gas stream, comprising a porous support whose pores contain a water transfer material, the water transfer material including a first water absorbent constituent and a second constituent which is interwoven with the first constituent to improve water transfer.
A method of forming a separation device comprising the steps of:
- preparing a water transfer material formulation by blending a first polymer with a second polymer in a solution to effect an entanglement between chains of the first polymer and chains of the second polymer;
- providing a porous support having a plurality of pores;
- filling at least some length of the pores with the formulation;
- and
- subjecting the formulation in the pores to conditions causing the first polymer to cross-link to from a gel.
Dependencies are inferred from the claim text.