Patent ID: 9272912
Filing Date: 2016-03-01
CPC Classification: B01J,C01B,C01F,C04B,Y02P

Claim Text:
1. A method for recovering carbon dioxide comprising: (a) providing wet lime mud sufficiently near a bubbling fluid bed calciner and a spray dryer or flash dryer such that the calciner and flash dryer or spray dryer operate in counter/current gas/solids flow wherein exiting calciner gases substantially dry the wet lime mud and the resulting dry lime mud is fed to the calciner; (b) feeding substantially dry lime mud to the fluid bed calciner wherein the fluid bed calciner is thermally linked by moving media heat transfer (MMHT) to a circulating fluid bed combustor by a heat transfer media wherein said media moves between the calciner and the combustor wherein MMHT provides heat input for calcination; (c) recycling the heat transfer media from the calciner to the combustor; (d) recovering excess energy from the process of c) generating superheated high pressure steam; and (e) recovering carbon dioxide and calcined lime mud from the fluid bed calciner.