Accelerated Carbonation Technology (ACT) is a new method for both carbon dioxide sequestration and upgrading of waste materials, through a single process. In this work a fraction of the waste product arising from Municipal Solid Waste Incineration (MSWI), namely Air Pollution Control (APC) residues, has been chosen as the waste material to be upgraded. The work reported here is investigating the suitability of a three-phase fluidised bed system to conduct the process. Experiments on a laboratory scale fluidised bed indicate that defluidisation of the APC residues is a crucial factor. Utilising an aeratable carrier solid has been seen as a possible method to achieve satisfactory fluidisation behaviour. The optimal phase to phase ratios to operate the fluidisation have been elucidated and are reported here.
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