Multi-zone conversion process and reactor assembly for heavy hydrocarbon feedstocks

Patent · Tue Oct 18 00:00:00 EDT 1983

OSTI ID:5382470

Liss, B; Calderon, M; Rakow, M S

A multi-zone fluidized bed hydrocarbon conversion process and apparatus are disclosed for producing gas and distillable liquid products from heavy hydrocarbon feedstocks. The feedstock is introduced into an upper fluidized bed primary cracking zone maintained at temperature of 850/sup 0/-1400/sup 0/ F. for cracking reactions therein, and resulting tars and coke are deposited on and within a particulate carrier material contained therein. The carrier material containing said tars and coke descends successively through a stripping zone to remove tars and an interim controlled temperature zone for secondary cracking against an upflowing hot reducing gas, then descends into a lower fluidized bed gasification zone. The gasification zone is maintained at temperature of 1600/sup 0/-1900/sup 0/ F. by oxygen-containing gas and steam introduced therein to gasify the coke deposits and produce the reducing gas. The stripping zone contains a stationary packing material such as coarse particulate packing which is supported by a refractory apertured grid, or an ordered array of multiple structural members. The decoked hot particulate carrier material is recirculated upwardly through a transfer conduit to the upper fluidized bed primary cracking zone by a transport gas. Hydrocarbon liquid and gas products are withdrawn from the upper cracking zone.

• Assignee: HRI, Inc.
• Patent Number(s): US 4410420
• OSTI ID: 5382470
• Resource Relation: Patent File Date: Filed date 15 Jan 1982; Other Information: PAT-APPL-339277
• Country of Publication: United States
• Language: English

Related Subjects

02 PETROLEUM
FLUIDIZED BED REACTORS
DESIGN
PETROLEUM RESIDUES
CONVERSION
GASIFICATION
COMBUSTION
CRACKING
OXYGEN
STEAM
CHEMICAL REACTIONS
DECOMPOSITION
ELEMENTS
ENERGY SOURCES
FOSSIL FUELS
FUEL DISPERSION REACTORS
FUELS
HOMOGENEOUS REACTORS
NONMETALS
OXIDATION
PETROLEUM
PETROLEUM FRACTIONS
PYROLYSIS
REACTORS
THERMOCHEMICAL PROCESSES
020400* - Petroleum- Processing