Carbon dioxide capture using solid sorbents in a fluidized bed with reduced pressure regeneration in a downer. Issue 12 (6th September 2013)

• Record Type: Journal Article
• Authors: Kongkitisupchai, Sunti; Gidaspow, Dimitri
• Is Part Of: AIChE journal. Volume 59:Issue 12(2013:Dec.)
• Page Start: 4519
• Page End: 4537
• Publication Date: 2013-09-06
• Subjects: Chemical engineering -- Periodicals; Génie chimique -- Périodiques; 660.28
• DOI: 10.1002/aic.14215
• Languages: English
• ISSNs: 0001-1541

Abstract

<abstract abstract-type="main"> <title> <x xml:space="preserve">Abstract</x> </title> <p>The most common technology for postcombustion CO₂ capture for existing power plants is the amine solvent scrubber. The energy consumption for capturing CO₂ from flue gases using amine solvent technology is 15 to 30% of the power plant electricity production. Hence, there is a need to develop more efficient methods of removing CO₂. Here, we show a novel design, obtained using multiphase CFD, and of a fluidized‐bed reduced pressure regenerator, coupled with a fluidized‐bed sorber, which has the potential to reduce the energy consumption. The undesirable core‐annular flow regime in the riser‐sorber is eliminated using multiple jet inlets and large particles leading to a shorter height. Up to 88% of the heat liberated in the riser‐sorber is recovered in the downer‐regenerator. © 2013 American Institute of Chemical Engineers <italic>AIChE J</italic>, 59: 4519–4537, 2013</p> </abstract>