Self‐Fluidization in an Indirectly Heated Calciner

A promising way to reduce CO2 emissions of fossil-fired power plants is the carbonate looping process with the reversible carbonation-calcination reaction of limestone. The focus is on the gas release in an indirectly heat pipe-heated calciner. Experiments in an electrically heated lab-scale batch calciner demonstrated that transition from a fixed bed to a bubbling fluidized bed is possible without an external fluidization agent only by heating up limestone. Several indirectly heated calciner concepts are presented.

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