Process for oil shale retorting using gravity-driven solids flow and solid-solid heat exchange

Patent · Wed Sep 21 00:00:00 EDT 1983

OSTI ID:7149041

Lewis, A E; Braun, R L; Mallon, R G; Walton, O R

A cascading bed retorting process and apparatus are disclosed in which cold raw crushed shale enters at the middle of a retort column into a mixer stage where it is rapidly mixed with hot recycled shale and thereby heated to pyrolysis temperature. The heated mixture then passes through a pyrolyzer stage where it resides for a sufficient time for complete pyrolysis to occur. The spent shale from the pyrolyzer is recirculated through a burner stage where the residual char is burned to heat the shale which then enters the mixer stage.

• DOE Contract Number: W-7405-ENG-48
• Assignee: Dept. of Energy
• Application Number: ON: DE84011289
• OSTI ID: 7149041
• Resource Relation: Other Information: Portions are illegible in microfiche products
• Country of Publication: United States
• Language: English

Related Subjects

04 OIL SHALES AND TAR SANDS
OIL SHALES
RETORTING
SPENT SHALES
COMBUSTION
EQUIPMENT
HEAT TRANSFER
PYROLYSIS
BITUMINOUS MATERIALS
CARBONACEOUS MATERIALS
CHEMICAL REACTIONS
DECOMPOSITION
ENERGY SOURCES
ENERGY TRANSFER
FOSSIL FUELS
FUELS
MATERIALS
OXIDATION
THERMOCHEMICAL PROCESSES
040402* - Oil Shales & Tar Sands- Surface Methods
040600 - Oil Shales & Tar Sands- Products & By-Products