Gasification process

Patent · Tue Jan 30 04:00:00 EST 1979

OSTI ID:6379905

Mitchell, D S; Sageman, D R

A continuous process and apparatus are disclosed for the retorting or gasification of hydrocarbon-containing solids such as oil shale, coal, tar sands, etc., wherein the solids are retorted or gasified in a combined entrained and fluidized bed. A solid fluidized heat-transfer material flows downwardly through a conversion zone. Subdivided hydrocarbon-containing solids are introduced into a central portion of the conversion zone, with smaller particles of the solids being entrained and moving upwardly through the conversion zone countercurrent to the flow of the fluidized heat-transfer material, and larger particles of the solids being fluidized and moving downwardly through the conversion zone concurrent with the flow of the heat-transfer material. A fluidizing gas is injected into a lower portion of the conversion zone and a portion of the solids is combusted, providing the necessary heat for the conversion reactions. Substantially plug flow of the heat-transfer solid and the hydrocarbon-containing solids is maintained by including in the converion zone means for impeding back mixing, such as a packing material filling the conversion zone. (official gogette).

• Assignee: Chevron Research Co.
• Patent Number(s): US 4137053
• OSTI ID: 6379905
• Country of Publication: United States
• Language: English

Related Subjects

01 COAL, LIGNITE, AND PEAT
010404* -- Coal
Lignite
& Peat-- Gasification
04 OIL SHALES AND TAR SANDS
040402 -- Oil Shales & Tar Sands-- Surface Methods
BITUMINOUS MATERIALS
CARBONACEOUS MATERIALS
COAL GASIFICATION
ENERGY SOURCES
ENTRAINMENT
EQUIPMENT
FLUIDIZED BED
FOSSIL FUELS
FUELS
GASIFICATION
OIL SANDS
OIL SHALES
RETORTING
THERMOCHEMICAL PROCESSES