Process and apparatus for carbon dioxide and carbonyl sulfide capture via ion exchange resins
A process for the reduction of carbon dioxide and carbonyl sulfide from various types of gas emitting sources containing carbon dioxide and/or gas or liquid emitting sources containing carbonyl sulfide, using ion exchange resin.
1. A process for removing carbonyl sulfide from a carbonyl sulfide containing fluid stream, the process comprising:
contacting the carbonyl sulfide containing fluid stream and a benzyl amine-co-polystrene based ion exchange resin,
sorbing at least a portion of the carbonyl sulfide from the carbonyl sulfide containing stream by the on exchange resin, thereby forming a carbonyl-sulfide-form ion exchange resin, and
desorbing the attached carbonyl sulfide from the carbonyl-sulfide-form ion exchange resin by one of: heat, or heat and vacuum, thereby increasing the capacity of the resin to re-adsorb carbonyl sulfide.
2. The process according to claim 1 , wherein the carbonyl sulfide stream is a gaseous stream.
3. The process according to claim 2 , wherein the gaseous stream is from a synthesis gas stream or a light hydrocarbon gas stream.
4. The process according to claim 3 , wherein the light hydrocarbon gas stream is a propane, propylene, ethane, and/or ethylene gas stream.
5. The process according to claim 1 , wherein the carbonyl sulfide stream is a liquid stream.
6. The process according to claim 5 , wherein the liquid stream is a liquefied petroleum gas stream.
7. The process according to claim 6 , wherein the liquefied petroleum gas stream is a propane, propylene, ethane, and/or ethylene liquefied stream.
8. The process accordingly to claim 1 , wherein the benzyl amine-co-polystrene based resin is produced by a phthalimide addition process.
9. The process according to claim 1 , wherein the carbonyl sulfide sorbing and desorbing steps are primarily thermal swing driven operation steps.
10. The process according to claim 1 , wherein the carbonyl sulfide sorbing and desorbing steps are driven by a thermal swing operation in combination with a pressure swing operation.
11. The process according to claim 1 , wherein said ion exchange resin has a water content between about 1% by weight and 25% by weight, based on the total weight of the resin.
12. The process according to claim 1 , wherein said ion exchange resin has a water content of greater than about 5% by weight and less than about 15% by weight, based on the total weight of the resin.
13. The process according to claim 1 , wherein the on exchange resin comprises beads having a mean particle size of approximately 10 to 1000 μm.
14. The process according to claim 1 , wherein the on exchange resin comprises beads having a mean particle size of approximately 100 to 1000 μm.
15. The process according to claim 1 , wherein the ion exchange resin comprises beads having a mean particle size of approximately 100 to 700 μm.
16. The process according to claim 1 , wherein the ion exchange resin comprises beads haying a uniformity coefficient of the distribution less than or equal to 1.2.