05.07.2009
Consumes much less electricity and is thus more environmentally friendly
Usually defined as oil/water contact or gas/oil contact
Fluid Catalytic Cracking (FCC) is a major secondary conversion process in a refinery for upgrading low value heavy hydrocarbons into high value light distillates and LPG. The process works in the presence of fine zeolitic catalyst particles in a fluid bed reactor/regenerator system. FCC is a flexible process in terms of loading/unloading and switch over of catalysts/additives. In FCCUs the spent catalyst can be withdrawn from the system and fresh catalyst can be loaded to maintain the catalytic activity and get the desired yield pattern.
Used to remove sulfur dioxide and nitrogen oxide from the gases emitted from the combustion of coal in power stations.
The facilities don’t reduce at all the emissions of carbon dioxide or the particulates and only partially reduce the emissions of sulfur dioxide and nitrogen oxide.
See also wet scrubbers.