05.07.2009
The fine particles contained in the gases that are released when coal is burned. A fine, light gray powder made up of glassy spheres from sub-micron to more than 100 microns in size.
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 In FCCUs the spent catalyst can be withdrawn from the system and fresh catalyst can be loaded to maintain the catalytic activity and get the desired yield pattern.