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Title: Staged fluidized bed

The invention relates to oil shale retorting and more particularly to staged fluidized bed oil shale retorting. Method and apparatus are disclosed for narrowing the distribution of residence times of any size particle and equalizing the residence times of large and small particles in fluidized beds. Particles are moved up one fluidized column and down a second fluidized column with the relative heights selected to equalize residence times of large and small particles. Additional pairs of columns are staged to narrow the distribution of residence times and provide complete processing of the material.
Authors:
Publication Date:
OSTI Identifier:
6929142
DOE Contract Number:
W-7405-ENG-48
Resource Type:
Patent
Resource Relation:
Other Information: Portions are illegible in microfiche products
Country of Publication:
United States
Language:
English
Subject:
04 OIL SHALES AND TAR SANDS; CHEMICAL REACTORS; DESIGN; OIL SHALES; RETORTING; FLUIDIZED BED; KINETICS; PARTICLE SIZE; TIME DEPENDENCE; BITUMINOUS MATERIALS; CARBONACEOUS MATERIALS; CHEMICAL REACTIONS; DECOMPOSITION; ENERGY SOURCES; FOSSIL FUELS; FUELS; MATERIALS; SIZE 040402* -- Oil Shales & Tar Sands-- Surface Methods