Carbonate looping experiments in a 1 MWth pilot plant and model validation

CATEGORY: CARBONATE LOOPING
Fuel, Volume 127, 1 July 2014, Pages 13–22
Fluidized Bed Combustion and Gasification – CO2 and SO2 capture: Special Issue in Honor of Professor E.J. (Ben) Anthony
Carbonate looping experiments in a 1 MWth pilot plant and model validation
Jochen Ströhle, Markus Junk, Johannes Kremer, Alexander Galloy, Bernd Epple
Energy Systems and Technology, Technische Universität Darmstadt, Otto-Berndt-Str. 2, 64287 Darmstadt, Germany
Abstract
Carbonate looping is an efficient post-combustion CO2 capture technology using limestone based sorbents. Researchers designed and constructed a carbonate looping pilot plant consisting of two interconnected circulating fluidized bed (CFB) reactors with a thermal capacity of 1 MWth at Technische Universität Darmstadt.
The pilot plant has been operated for >1500 h in fluidized bed mode, thereof >400 h with CO2 capture. The heat for the endothermic regeneration of CaO in the calciner was provided by combustion of either propane or pulverised coal with O2 enriched air. High CO2 absorption efficiencies in the carbonator were achieved for long periods. Taking the CO2 produced by oxyfuel-combustion in the calciner into account, the pilot plant was operated with total CO2 capture rates above 90%. Researchers developed a process model for the carbonate looping pilot plant with ASPEN PLUS™.
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