Continuous carbon sequestration material production methods and systems for practicing the same
Methods of producing solid CO 2 sequestering carbonate materials are provided. Aspects of the methods include introducing a divalent cation source into a flowing aqueous liquid (e.g., a bicarbonate rich product containing liquid) under conditions sufficient such that a non-slurry solid phase CO 2 sequestering carbonate material is produced. Also provided are systems configured for carrying out the methods.
1. A method of producing a solid CO 2 sequestering carbonate material, the method comprising:
introducing a divalent cation source into a flowing aqueous bicarbonate and/or carbonate containing liquid under conditions sufficient such that a non-slurry solid phase CO 2 sequestering carbonate material is produced in the flowing aqueous bicarbonate and/or carbonate containing liquid.
2. The method according to claim 1 , wherein the liquid is a bicarbonate containing liquid.
3. The method according to claim 2 , wherein the bicarbonate containing liquid is a liquid produced from a CO 2 containing gas.
4. The method according to claim 3 , wherein the CO 2 containing gas is a multi-component gaseous stream.
5. The method according to claim 4 , wherein the multi-component gaseous stream is a flue gas.
6. The method according to claim 2 , wherein the method further comprises producing the bicarbonate containing liquid.
7. The method according to claim 1 , wherein the non-slurry solid phase CO 2 sequestering carbonate material is freshwater stable.
8. The method according to claim 1 , wherein the non-slurry solid phase CO 2 sequestering carbonate material is a particulate composition.
9. The method according to claim 8 , wherein the particulate composition has a mean particle diameter of 30 microns or greater.
10. The method according to claim 1 , wherein the method is carried out in a continuous reactor.
11. The method according to claim 10 , wherein the solid phase CO 2 sequestering carbonate material is produced in a fluidized bed subunit of the continuous reactor.
12. The method according to claim 1 , wherein the method further comprises separating the non-slurry solid phase CO 2 sequestering carbonate material from the liquid.
13. The method according to claim 6 , wherein the bicarbonate containing liquid is produced by contacting a CO 2 containing gas with an aqueous medium.
14. The method according to claim 1 , wherein the method further comprises producing a building material from the non-slurry solid phase CO 2 sequestering carbonate material.
15. The method according to claim 14 , wherein the building material comprises an aggregate.
16. The method according to claim 14 , wherein the building material comprises roofing granules.