One such approach is to use limestone sorbents to capture CO 2 from the gas mixture. Integrated CO 2 capture designsĪ number of the integrated carbon capture technologies are designed and built around existing or new energy conversion systems (e.g., H2 production from fossil fuels). Capture technologies will likely improve in the coming years, thereby improving economics. Major technical and cost challenges need to be overcome before retrofit of existing power plants with post-combustion capture systems becomes an effective mitigation option. In addition, a large amount of energy is required to release the CO 2 from solvents or solid adsorbents after separation. The high capital costs for installing post-combustion separation systems to process the large volume of flue gas is a major impediment to post-combustion capture of CO 2. These methods can be used on a range of industrial processes however, their use for removing CO 2 from high-volume, low-CO 2 concentration flue gases, such as those produced by coal-fired power plants, is more problematic. Other novel technologies include ionic liquids, Nanoparticle organic hybrid materials, and chemical looping sorbents.Physical and chemical solvents, particularly monoethanolamine (MEA).Methods currently used or developed for CO 2 separation include but not limited to: Both post-combustion CO 2 capture and oxy-combustion technology provide retrofit options for existing coal-fired power plants. Technologies for capturing CO 2 from gas streams have been used for many years to produce a pure stream of CO 2 from natural gas or industrial processing for use in food processing and chemical industries.
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