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 coated aggregate material, the method comprising:
providing a continuous reactor comprising a flowing aqueous bicarbonate and/or carbonate containing liquid that comprises seed structure comprising an aggregate; and
introducing a divalent cation source into the flowing aqueous bicarbonate and/or carbonate containing liquid comprising the seed structure comprising an aggregate to produce a solid carbonate coated aggregate comprising 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.
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 1 , wherein the reactor comprises a flow modulator.
7. The method according to claim 1 , wherein the reactor comprises a pressure modulator.
8. The method according to claim 1 , wherein the reactor comprises a temperature modulator.
9. The method according to claim 1 , wherein the seed structure comprises granules.
10. The method according to claim 1 , wherein the seed structure comprises a carbonate material.
11. The method according to claim 1 , wherein the seed structure comprises a non-carbonate material.
12. The method according to claim 1 , wherein the continuous reactor is fluidically coupled to an aqueous bicarbonate containing liquid production unit.
13. The method according to claim 1 , wherein the continuous reactor is operatively coupled to a building material production unit.
14. The method according to claim 1 , wherein the aggregate comprises a material selected from the group consisting of natural aggregate materials, carbonate rocks, sand, natural silica sand, sandstone, gravel, granite, diorite, gabbro, basalt, synthetic aggregate materials, industrial byproduct aggregate materials, blast-furnace slag, fly ash, municipal waste, and recycled concrete.
15. The method according to claim 14 , wherein the solid carbonate coated aggregate comprises a solid carbonate coating having a thickness ranging from 0.1 mm to 25 mm.