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Title: Oil shale loss from a laboratory fluidized bed

The rate of loss of dust from a laboratory-scale fluidized bed of Greenriver oil shale has been measured. The rate of loss of dust form raw shale in the bed was approximately 1%/min for the first few minutes and then decreased. The loss rate for retorted or burnt shale was 5 to 10 times higher. The rates for retorted and burned shale were nearly the same. The time required for a 10 wt% loss of mass was approximately 3 min for processed shale and 1 hour for raw shale. Particles left in the bed during fluidization lost sharp corners, but kept the original elongation. Dust lost by the bed has a very wide range of sizes and demonstrated a strong bimodal distribution of sizes. The bimodal distribution of particles is interpreted as resulting from two mechanisms of dust generation; fracture and wear.
Authors:
;  [1]
  1. (Lawrence Livermore National Lab., CA (USA))
Publication Date:
OSTI Identifier:
6776594
Report Number(s):
CONF-8904193--
Journal ID: CODEN: OSSPD
DOE Contract Number:
W-7405-ENG-48
Resource Type:
Conference
Resource Relation:
Journal Name: Oil Shale Symposium Proceedings; (USA); Journal Volume: 22; Conference: 22. annual oil shale symposium, Golden, CO (USA), 19-20 Apr 1989
Country of Publication:
United States
Language:
English
Subject:
04 OIL SHALES AND TAR SANDS; OIL SHALES; DUSTS; FLUIDIZED BEDS; IN-SITU RETORTING; PARTICLE SIZE; SCALE MODELS; BITUMINOUS MATERIALS; CARBONACEOUS MATERIALS; CHEMICAL REACTIONS; DECOMPOSITION; ENERGY SOURCES; FOSSIL FUELS; FUELS; IN-SITU PROCESSING; MATERIALS; PROCESSING; RETORTING; SIZE; STRUCTURAL MODELS 040401* -- Oil Shales & Tar Sands-- In Situ Methods, True & Modified; 041000 -- Oil Shales & Tar Sands-- Environmental Aspects; 040403 -- Oil Shales & Tar Sands-- Refining