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 carbonate material, the method comprising:
introducing a divalent cation source into a flowing aqueous bicarbonate and/or carbonate containing liquid comprising a seed structure to produce a composite structure of a non-slurry solid phase carbonate material and the seed structure in the flowing aqueous bicarbonate and/or carbonate containing liquid, wherein the non-slurry solid phase carbonate material is a reaction product of divalent cations from the divalent cation source and bicarbonate or carbonate anions from the aqueous bicarbonate and/or carbonate containing liquid and is present in a depression of the seed structure.
2. The method according to claim 1 , wherein the liquid is a bicarbonate containing liquid.
3. The method according to claim 2 , wherein the method further comprises producing the bicarbonate containing liquid.
4. The method according to claim 2 , wherein the bicarbonate containing liquid comprises an amine.
5. The method according to claim 2 , wherein the bicarbonate containing liquid is a liquid produced by combining a CO 2 containing gas with an aqueous medium.
6. The method according to claim 5 , wherein the CO 2 containing gas is a multi-component gaseous stream.
7. The method according to claim 6 , wherein the multi-component gaseous stream is a flue gas.
8. The method according to claim 1 , wherein the non-slurry solid phase carbonate material is freshwater stable.
9. The method according to claim 1 , wherein the seed structure is a particulate composition.
10. The method according to claim 9 , wherein the particulate composition comprises particles ranging from 0.01 to 1,000,000 μm.
11. The method according to claim 1 , wherein the seed structure is a porous and permeable aggregate material.
12. The method according to claim 1 , wherein the method is carried out in a continuous reactor.
13. The method according to claim 12 , wherein the composite structure is produced in a fluidized bed subunit of the continuous reactor.
14. The method according to claim 1 , wherein the method further comprises separating the composite structure from the liquid.
15. The method according to claim 3 , wherein the bicarbonate containing liquid is produced by contacting a CO 2 containing gas with an aqueous medium.
16. The method according to claim 1 , wherein the method further comprises producing a building material from the composite structure.
17. The method according to claim 16 , wherein the building material comprises an aggregate or roofing granules.