Apparatus for oil shale retorting

Patent · Wed Jan 01 00:00:00 EST 1986

OSTI ID:866034

Lewis, Arthur E ^[1]; Braun, Robert L ^[2]; Mallon, Richard G ^[2]; Walton, Otis R ^[2]

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1. Los Altos, CA
2. Livermore, CA

A cascading bed retorting process and apparatus 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.

• Research Organization: Lawrence Livermore National Laboratory (LLNL), Livermore, CA (United States)
• DOE Contract Number: W-7405-ENG-48
• Assignee: United States of America as represented by United States (Washington, DC)
• Patent Number(s): US 4619738
• OSTI ID: 866034
• Country of Publication: United States
• Language: English

Related Subjects

apparatus
oil
shale
retorting
cascading
bed
process
cold
raw
crushed
enters
middle
retort
column
mixer
stage
rapidly
mixed
hot
recycled
heated
pyrolysis
temperature
mixture
passes
pyrolyzer
resides
sufficient
time
complete
occur
spent
recirculated
burner
residual
char
burned
heat
retorting process
pyrolysis temperature
shale retort
oil shale
sufficient time
spent shale
shale retorting
bed retorting
residual char
mixer stage
rapidly mixed
retort column
shale enters
recycled shale
raw crushed
cold raw
heated mixture
hot recycled
cascading bed
crushed shale
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