title: Operation of a cyclonic preheater in the Ca-looping for CO2 capture.
abstract: Calcium looping is an emerging technology for CO2 capture that makes use of the calcium oxide as a sorbent. One of its main issues is the significant energy consumption in the calciner, where the regeneration of the sorbent takes place. Nevertheless, as a high temperature looping technology, the surplus heat flows may be used to reduce the energy needs in this reactor. The addition of a cyclonic preheater similar to those used in the cement industry is proposed in this work. A calcium looping system was modeled and simulated to assess the advantages and disadvantages of the inclusion of a cyclonic preheater. Despite the negative effect on the maximum average capture capacity of the sorbent, a reduction on the coal and oxygen consumptions and on the extra CO2 generated in the calciner is obtained.
authors.affiliation: CIRCE (Research Centre for Energy Resources and Consumption), Universidad de Zaragoza , Mariano Esquillor 15, 50018 Saragossa, Spain.
authors.forename: Ana
authors.initials: A
authors.lastname: Martínez
authors.forename: Yolanda
authors.initials: Y
authors.lastname: Lara
authors.forename: Pilar
authors.initials: P
authors.lastname: Lisbona
authors.forename: Luis M
authors.initials: LM
authors.lastname: Romeo
mesh_terms: D000327:Adsorption; D000393:Air Pollutants / Q000737:chemistry*; D000397:Air Pollution / Q000517:prevention & control*; D002118:Calcium / Q000737:chemistry*; D002245:Carbon Dioxide / Q000737:chemistry*; D003031:Coal; D010100:Oxygen / Q000737:chemistry; D011210:Power Plants
chemical_list: D000393:Air Pollutants; D003031:Coal; D002245:Carbon Dioxide; D010100:Oxygen; D002118:Calcium