Lawrence Livermore National Laboratory oil shale project quarterly report, July-September 1984. [Moving-bed retort]

Technical Report · Thu Nov 01 04:00:00 EST 1984

OSTI ID:6272414

Lewis, A E ^[1]

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1. ed.

Highlights of progress achieved during the quarter ending September, 1984, are summarized. Additional parameter studies using our moving-bed retort model were completed for an external-combustion, hot gas retort. Previously reported studies focused on effects of variations in the temperature and flow rate of the recycle gas and the dimensions of the retort. More recently, we investigated the effects of variations in shale grade, water content, flow rate, particle size, and bed porosity. We also considered effects of permeability contrast within a retort. The LLNL one-dimensional model for simulating oil shale retorting in an aboveground, moving-bed retort was applied to the indirect mode of operation in which externally heated recycle gas provides the heat required for the retorting process. Variations in recycle-gas temperature and flow rate, shale flow rate, shale grade, water content, particle size distribution, bed porosity, uniformity of porosity, and retort dimensions were studied. We have been evaluating the results for determining hydrogen sulfide and trace sulfur in gases taken from the pyrolysis portion of the retort after leaving the oil condensers, as determined by the triple quadrupole mass spectrometer (TQMS) for the retort runs R-2 through R-7. These runs were conducted in our hot solid retort system consisting of a fluidized bed pyrolyzer, a cascading bed combustor, and recirculating gas and solid streams. Differences had been noted between determinations of the H/sub 2/S by Draeger tubes and the portable on-line mini-quadrupole mass spectrometer (Analog Technology Corp. Automated Trace Gas Monitor Model 2001), and the grab samples run on the TQMS. The error was due to a complex mix of ion gauge response, gas viscosities and pumping speeds.

• Research Organization: Lawrence Livermore National Lab., CA (USA)
• DOE Contract Number: W-7405-ENG-48
• OSTI ID: 6272414
• Report Number(s): UCID-16986-84-3; ON: DE85004986
• Country of Publication: United States
• Language: English

Related Subjects

04 OIL SHALES AND TAR SANDS
040402* -- Oil Shales & Tar Sands-- Surface Methods
BITUMINOUS MATERIALS
CARBONACEOUS MATERIALS
CHALCOGENIDES
CHEMICAL ANALYSIS
CHEMICAL REACTIONS
CHEMICAL REACTORS
DATA
DECOMPOSITION
DISTILLATION EQUIPMENT
ENERGY SOURCES
EQUIPMENT
EXPERIMENTAL DATA
FLOW RATE
FLUIDS
FOSSIL FUELS
FUELS
GASES
HYDROGEN COMPOUNDS
HYDROGEN SULFIDES
INFORMATION
MASS SPECTROSCOPY
MATERIALS
MATHEMATICAL MODELS
NUMERICAL DATA
OIL SHALES
PARTICLE SIZE
POROSITY
RETORTING
RETORTS
SHALE GAS
SIMULATION
SIZE
SPECTROSCOPY
SULFIDES
SULFUR COMPOUNDS
SULFUR CONTENT
TEMPERATURE DEPENDENCE
WASTE HEAT UTILIZATION
WASTE PRODUCT UTILIZATION