Cryogenic Carbon Capture™ (CCC) removes CO2 from flue gas in a bolt on retrofittable, cost-effective, and energy-efficient process. The process also provides grid-level energy storage capable of storing and releasing energy at hundreds of megawatt rates at high efficiency and minimal cost beyond the costs of the carbon capture technology. The energy storage can level daily load fluctuations and responds to intermittent power sources on time scales comparable to solar and wind farms. The technology cools flue gases to their condensation (desublimation) point forming solid CO2, separates the solids from the residual gases, pressurizes the solids, and reheats both streams to room temperature. The process produces two nominally ambient-temperature streams: liquid CO2 at about 150 bar and the light gases at ambient pressure. Essentially all of the sensible heating occurs through energy integration. The technology primary advantages include
(a) consumes minimal energy for CO2 capture (appx. 0.7 GJe/tonne CO2 for typical coal flue gas)
(b) costs relatively little (2.5 cents/kWh or less increase in COE)
(c) retrofits existing plants with virtually no upstream modification
(d) removes essentially all other pollutants except CO, including SOx, NOx, Hg, PMxx, and HC;
(e) requires no additional cooling water;
(f) requires no steam or other resources from the process other than electrical power
Fully integrated versions of the technology at up to 1 tonne of CO2/day have operated on fuels including subbituminous coal, bituminous coal, natural gas, biomass, municipal waste and tires and at sites that include utility power plants, cement kilns, heat plants, and pilot-scale research combustors. This presentation summarizes the technology, field test results, and development plans for this technology. Further information is available at www.sesinnovation.com
