Oil shale project run summary large retort run L-4

Technical Report · Thu Nov 05 04:00:00 EST 1981

OSTI ID:6103973

Raley, J H; Campbell, J H; Sandholtz, W A; Ackerman, F J; Mallon, R G; Ott, L L; Ronchetto, J J

L-4 was a simulated MIS experiment carried out in the 6-metric ton oil shale retort on October 22 to 24, 1979. An oil yield of 87% FA was achieved at a retorting rate of 2.8 to 3.0 m/day with a shale bed of -30 +0.001 cm particle size range and including a nearly two-fold step change in grade. Temperature control was maintained by varying the steam/air ratio and injection gas rate. Oil yield, front position and retorting rate, as predicted in real time during the run from offgas data, agreed reasonably well with directly measured counterparts. Pre-run model calculations reliably predicted operating conditions for both inert gas pre-ignition and combustion retorting phases of the run. Pre-run steam logging predicted the degree of horizontal uniformity of the retorting front. Ultrasonic reflectometry, gas-releasing capsules and differential pressure measurements were shown to be promising methods for temperature measurement. Passage of the retorting front through the grade change was signalled by changes in offgas composition.

• Research Organization: Lawrence Livermore National Lab., CA (USA)
• DOE Contract Number: W-7405-ENG-48
• OSTI ID: 6103973
• Report Number(s): UCID-19238; ON: DE82003627
• Country of Publication: United States
• Language: English

Related Subjects

04 OIL SHALES AND TAR SANDS
040401* -- Oil Shales & Tar Sands-- In Situ Methods
True & Modified
BITUMINOUS MATERIALS
CARBONACEOUS MATERIALS
CHEMICAL REACTIONS
COMBUSTION
CONTROL
DATA
ENERGY SOURCES
EXPERIMENTAL DATA
FOSSIL FUELS
FUELS
INFORMATION
KINETICS
MATERIALS
MODIFIED IN-SITU PROCESSES
NUMERICAL DATA
OIL SHALES
OIL YIELDS
OXIDATION
SIMULATION
TEMPERATURE CONTROL
TEMPERATURE MEASUREMENT
THERMOCHEMICAL PROCESSES
YIELDS