Systems, Methods and Devices for Geologic Storage of CO2 from Modular Point Sources
Methods, systems and devices for the subsurface storage of CO 2 from a modular industrial point source. In an embodiment the CO 2 is from a modular cement plant. In an embodiment the CO 2 from a point source is dissolved in saline/brine solution and pumped into a subterranean storage space.
1 - 28 . (canceled)
29 . A system for geologic storage of CO 2 , the system comprising:
a CO 2 enrichment unit;
the CO 2 enrichment unit comprising:
an inlet for receiving a flow of a brine solution;
an inlet for receiving a flow of gaseous CO 2 ; and,
an outlet for removing an outflow from the enrichment unit;
wherein the outlet is in fluid communication with a borehole in the earth;
wherein the CO 2 enrichment unit is configured whereby the flow of gaseous CO 2 is in direct contact within the flow of the brine solution; and,
wherein the outflow comprises a CO 2 -rich brine, and the outflow is not a super critical fluid.
30 . The system of claim 29 , wherein the borehole extends less than 1,000 m below a surface of the earth into a reservoir.
31 . The system of claim 29 , comprising a second borehole in the earth extending into a reservoir, wherein the reservoir contains the brine solution, and the second borehole is in fluid communication with the inlet for receiving the flow of the brine solution.
32 . The system of claim 29 , wherein the CO 2 -rich brine comprises H 2 CO 3 (carbonic acid).
33 . The system of claim 29 , wherein the CO 2 -rich brine comprises one or more of the species H + , HCO 3 1− and CO 3 2− .
34 . The system of claim 29 , wherein the enrichment unit is a semi-open system.
35 . The system of claim 29 , wherein the enrichment unit is a semi-open system comprising one or more of a bubbler, a mixer, a falling brine solution, a brine sprayer, a CO 2 gas blanket, and a counter flow system.
36 . The system of claim 29 , wherein the inlet is for receiving a flow of the brine solution from a reservoir in the earth.
37 . The system of claim 29 , wherein the CO 2 is generated from a source.
38 . The system of claim 29 , wherein the source of CO 2 is a cement plant.
39 . The system of claim 29 , wherein the enrichment unit is a semi-open system.
40 . A method for geologic storage of CO 2 generated from a source, the method comprising:
flowing a brine solution from a brine source into a semi-open CO 2 enrichment system;
flowing a gaseous CO 2 from the source into the semi-open CO 2 enrichment system;
bringing the gaseous CO 2 into direct contact with the brine solution; whereby a CO 2 -rich brine is formed;
removing the CO 2 -rich brine from the brine semi-open CO 2 enrichment system; and
injecting the CO 2 -rich brine into a reservoir below the surface of the earth.
41 . The method of claim 40 , wherein the CO 2 -rich brine is a liquid, and is not a super critical fluid.
42 . The system of claim 40 , wherein the borehole extends less than 1,000 m below a surface of the earth.
43 . The system of claim 40 , wherein the brine solution is pumped from the reservoir, through a second borehole in the reservoir.
44 . The methods of claim 40 , wherein the CO 2 -rich brine comprises H 2 CO 3 (carbonic acid) and/or one or more of the species H + , HCO 3 1− and CO 3 2− .
45 . The methods of claim 40 , wherein the source of CO 2 is a cement plant.
46 . A method for geologic storage of CO 2 from modular point source emissions comprising:
pumping brine water from a permeable reservoir;
dissolving a CO 2 stream in brine water; and
injecting the CO 2 into a storage aquifer to store the CO 2 .
47 . The method of claim 46 , wherein the CO 2 is not a supercritical fluid.
48 . The method of claim 46 , wherein the shallowest point of the aquifer is less than 800 m below a surface of the earth.