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Title: Process for clean-burning fuel from low-rank coal

Abstract

A process is described for upgrading and stabilizing low-rank coal involving the sequential processing of the coal through three fluidized beds; first a dryer, then a pyrolyzer, and finally a cooler. The fluidizing gas for the cooler is the exit gas from the pyrolyzer with the addition of water for cooling. Overhead gas from pyrolyzing is likely burned to furnish the energy for the process. The product coal exits with a tar-like pitch sealant to enhance its safety during storage. 1 fig.

Inventors:
; ;
Issue Date:
OSTI Identifier:
7295693
Patent Number(s):
5322530 A
Application Number:
PPN: US 7-963793
Assignee:
Western Research Inst., Laramie, WY (United States) PTO; EDB-94-097928
DOE Contract Number:  
FC21-86MC11076
Resource Type:
Patent
Resource Relation:
Patent File Date: 20 Oct 1992
Country of Publication:
United States
Language:
English
Subject:
01 COAL, LIGNITE, AND PEAT; COAL; DRYING; PYROLYSIS; SOLID FUELS; PRODUCTION; COAL RANK; COAL TAR; FIRE HAZARDS; MITIGATION; CARBONACEOUS MATERIALS; CHEMICAL REACTIONS; DECOMPOSITION; ENERGY SOURCES; FOSSIL FUELS; FUELS; HAZARDS; MATERIALS; ORGANIC COMPOUNDS; OTHER ORGANIC COMPOUNDS; TAR; THERMOCHEMICAL PROCESSES; 010300* - Coal, Lignite, & Peat- Preparation- (1987-); 010409 - Coal, Lignite, & Peat- Pyrolysis & Carbonization- (1987-)

Citation Formats

Merriam, N.W., Sethi, V., and Brecher, L.E. Process for clean-burning fuel from low-rank coal. United States: N. p., 1994. Web.
Merriam, N.W., Sethi, V., & Brecher, L.E. Process for clean-burning fuel from low-rank coal. United States.
Merriam, N.W., Sethi, V., and Brecher, L.E. Tue . "Process for clean-burning fuel from low-rank coal". United States.
@article{osti_7295693,
title = {Process for clean-burning fuel from low-rank coal},
author = {Merriam, N.W. and Sethi, V. and Brecher, L.E.},
abstractNote = {A process is described for upgrading and stabilizing low-rank coal involving the sequential processing of the coal through three fluidized beds; first a dryer, then a pyrolyzer, and finally a cooler. The fluidizing gas for the cooler is the exit gas from the pyrolyzer with the addition of water for cooling. Overhead gas from pyrolyzing is likely burned to furnish the energy for the process. The product coal exits with a tar-like pitch sealant to enhance its safety during storage. 1 fig.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {1994},
month = {6}
}