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Title: Inclined fluidized bed system for drying fine coal

Abstract

Coal is processed in an inclined fluidized bed dryer operated in a plug-flow manner with zonal temperature and composition control, and an inert fluidizing gas, such as carbon dioxide or combustion gas. Recycled carbon dioxide, which is used for drying, pyrolysis, quenching, and cooling, is produced by partial decarboxylation of the coal. The coal is heated sufficiently to mobilize coal tar by further pyrolysis, which seals micropores upon quenching. Further cooling with carbon dioxide enhances stabilization.

Inventors:
 [1];  [2];  [2]
  1. (Golden, CO)
  2. (Laramie, WY)
Issue Date:
Research Org.:
Western Research Institute (Laramie, WY)
OSTI Identifier:
868166
Patent Number(s):
5087269
Application Number:
07/563,226
Assignee:
Western Research Institute (Laramie, WY) ANL
DOE Contract Number:  
AC21-87MC24268
Resource Type:
Patent
Country of Publication:
United States
Language:
English
Subject:
inclined; fluidized; bed; drying; fine; coal; processed; dryer; operated; plug-flow; manner; zonal; temperature; composition; control; inert; fluidizing; gas; carbon; dioxide; combustion; recycled; pyrolysis; quenching; cooling; produced; partial; decarboxylation; heated; sufficiently; mobilize; tar; seals; micropores; enhances; stabilization; fluidizing gas; carbon dioxide; fluidized bed; combustion gas; position control; fine coal; inclined fluidized; coal tar; heated sufficiently; inert fluidizing; bed dryer; /44/34/

Citation Formats

Cha, Chang Y., Merriam, Norman W., and Boysen, John E. Inclined fluidized bed system for drying fine coal. United States: N. p., 1992. Web.
Cha, Chang Y., Merriam, Norman W., & Boysen, John E. Inclined fluidized bed system for drying fine coal. United States.
Cha, Chang Y., Merriam, Norman W., and Boysen, John E. Tue . "Inclined fluidized bed system for drying fine coal". United States. https://www.osti.gov/servlets/purl/868166.
@article{osti_868166,
title = {Inclined fluidized bed system for drying fine coal},
author = {Cha, Chang Y. and Merriam, Norman W. and Boysen, John E.},
abstractNote = {Coal is processed in an inclined fluidized bed dryer operated in a plug-flow manner with zonal temperature and composition control, and an inert fluidizing gas, such as carbon dioxide or combustion gas. Recycled carbon dioxide, which is used for drying, pyrolysis, quenching, and cooling, is produced by partial decarboxylation of the coal. The coal is heated sufficiently to mobilize coal tar by further pyrolysis, which seals micropores upon quenching. Further cooling with carbon dioxide enhances stabilization.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {1992},
month = {2}
}

Patent:

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