![]() ![]() However, newer solidification technologies are being developed involving the use of liquid metal electrocatalysts (for instance, gallium alloy), which enable conversion of the CO 2 to a solid at room temperature. Until recently, liquefaction via compression was the only viableĬCS option. Why is CCS Important to Energy Transition?Īlthough CCS is still expensive and new, it is considered an essential way to mitigate greenhouse gas accumulation from fossil fuel use while the world transitions to cleaner energy sources. Learn more about compression technology and heat recovery The many advantages of Oxyfuel combustion over air include reduced fuel consumption, higher possible flame temperature, less heat loss, greater concentration of CO 2 (making sequestration easier), greater condensability of the flue gas (easing compression separation), ability to capture the heat of condensation, and 75% reduction of overall flue gas. This is the first step in producing blue hydrogen from coal or natural gas.įinally, Oxyfuel technology burns fuel using pure oxygen, or a mixture of oxygen and re-circulated flue gas, instead of air. The carbon dioxide concentration is high and can be separated, leaving hydrogen as fuel. The syngas then undergoes a water-gas shift reaction that converts carbon monoxide and water to hydrogen and carbon dioxide. Here, steam methane reforming or gasification of fuels such as coal or biomass produces syngas. Pre-combustion capture removes the carbon dioxide before combustion. ![]() Post-combustion capture uses absorption-, adsorption-, or membrane-based ‘scrubbing’ to remove CO 2 from the flue gases emitted by fossil fuel combustion. How does Carbon Capture and Storage work?ĬO 2 can be captured at the source via three methods: post-combustion, pre-combustion, and oxyfuel. ![]()
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