Method for recovering hydrocarbons from solids

Patent · Tue Apr 29 00:00:00 EDT 1986

OSTI ID:5600333

Duncan, D A; Woebeke, H

A process is described for separating hydrocarbons from a finely divided solid that contains hydrocarbons the process comprising: (a) preheating a finely divided entrained hydrocarbon-containing solid; (b) passing the preheated finely divided hydrocarbon-containing solids to a reaction zone where they are contacted with a gaseous stream at a sufficiently high temperature at a residence time of about 0.01 to 1.5 seconds to gasify from 30 to 60% by weight of the hydrocarbon and form a gaseous oil stream that comprises gas, oil and finely divided entrained hydrocarbon-containing solid; (c) passing the gaseous oil stream to a separator where the spent finely divided hydrocarbon-containing solid is separated from the gaseous oil stream; (d) passing the solid material obtained in the separator to a stripper wherein residual gaseous hydrocarbon vapors are removed and stripped hydrocarbon-containing solid is obtained; and (e) dividing the stream of stripped hydrocarbon-containing solid into two streams, a first stream being sent to a cyclone cascade for direct heat exchange with a recycle gas to furnish a hot gaseous stream to the reactor and to the stripper and a second portion passed to a gasifier and then recycled to the reactor.

• Assignee: Stone and Webster Engineering Corp., Boston, MA
• Patent Number(s): US 4585543
• OSTI ID: 5600333
• Resource Relation: Patent File Date: Filed date 9 Mar 1984
• Country of Publication: United States
• Language: English

Related Subjects

02 PETROLEUM
37 INORGANIC
ORGANIC
PHYSICAL AND ANALYTICAL CHEMISTRY
HYDROCARBONS
SEPARATION PROCESSES
CHEMICAL REACTORS
CYCLONE SEPARATORS
GAS FLOW
GASIFICATION
HEATING
HIGH TEMPERATURE
NATURAL GAS
PETROLEUM
QUANTITY RATIO
RECYCLING
STEAM STRIPPING
TEMPERATURE CONTROL
TIME DEPENDENCE
CONCENTRATORS
CONTROL
ENERGY SOURCES
EQUIPMENT
FLUID FLOW
FLUIDS
FOSSIL FUELS
FUEL GAS
FUELS
GAS FUELS
GASES
INERTIAL SEPARATORS
MANAGEMENT
ORGANIC COMPOUNDS
POLLUTION CONTROL EQUIPMENT
PROCESSING
SEPARATION EQUIPMENT
THERMOCHEMICAL PROCESSES
WASTE MANAGEMENT
WASTE PROCESSING
WATER TREATMENT
020400* - Petroleum- Processing
400105 - Separation Procedures