Apparatus for the separation of fluid cracking catalyst particles from gaseous hydrocarbons

Patent · Tue Sep 08 00:00:00 EDT 1987

OSTI ID:5826819

Parker, W A; Dewitz, T S; Hinds, Jr, G P; Gwyn, J E; Bilgie, A H; Hardesty, D E

This patent describes an apparatus for separating suspensions of catalyst particles and gaseous hydrocarbons and for stripping hydrocarbons from the catalyst particles after traversing a riser conduit. It consists of: (a) an upright hollow housing having a lower portion, a middle portion, and an upper portion, a gaseous hydrocarbon vortex outlet with a diameter in the upper portion of the housing for removing clean gaseous hydrocarbons, and a stripped catalyst outlet means in the lower portion of the housing for removing stripped catalyst. The housing has a tangential inlet means in the upper portion to form a swirl zone wherein suspensions of catalyst particles and gaseous hydrocarbons entered through the inlet means form a fluid vortex; (b) a vortex stabilizer means having a perimeter and coaxially mounted in the middle portion of the housing and having a diameter of at least the diameter of the gaseous hydrocarbon vortex outlet and positioned a distance from the gaseous hydrocarbon vortex outlet means to define a cyclone zone. The catalyst particles are separated from gaseous hydrocarbons to form a clean fluid. The vortex stabilizing means stabilizes and centers the vortex to minimize reentrainment of the particles into the clean gaseous fluid; (c) means for supporting a fluidized catalyst bed below thee vortex stabilizer means near the bottom of the hollow housing and having a fluidized bed of catalyst being supported and defining, intermediate the fluidized catalyst support means and the vortex stabilizer means; (d) means for injecting stripping gas into the fluidized catalyst to minimize adsorbed hydrocarbons on the catalyst particles.

• Assignee: Shell Oil Co., Houston, TX
• Patent Number(s): US 4692311
• OSTI ID: 5826819
• Resource Relation: Patent File Date: Filed date 10 Feb 1984
• Country of Publication: United States
• Language: English

Related Subjects

37 INORGANIC
ORGANIC
PHYSICAL AND ANALYTICAL CHEMISTRY
CATALYSTS
RECOVERY
SEPARATION PROCESSES
HYDROCARBONS
CATALYTIC CRACKING
SEPARATION EQUIPMENT
DESIGN
ADSORPTION
FLUIDIZED BEDS
OPERATION
PARTICULATES
SUSPENSIONS
CHEMICAL REACTIONS
CRACKING
DECOMPOSITION
DISPERSIONS
ORGANIC COMPOUNDS
PARTICLES
PYROLYSIS
SORPTION
THERMOCHEMICAL PROCESSES
400201* - Chemical & Physicochemical Properties