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

Patent · Wed Sep 21 04:00:00 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
• Patent Number(s): None
• Application Number: ON: DE84011289
• OSTI ID: 7149041
• Country of Publication: United States
• Language: English

Related Subjects

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