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Title: Pretreatment of coal during transport

Abstract

Many available coals are "caking coals" which possess the undesirable characteristic of fusing into a solid mass when heated through their plastic temperature range (about 400.degree. C.) which temperature range is involved in many common treatment processes such as gasification, hydrogenation, carbonization and the like. Unless the caking properties are first destroyed, the coal cannot be satisfactorily used in such processes. A process is disclosed herein for decaking finely divided coal during its transport to the treating zone by propelling the coal entrained in an oyxgen-containing gas through a heated transport pipe whereby the separate transport and decaking steps of the prior art are combined into a single step.

Inventors:
 [1];  [2];  [3];  [1]
  1. Pittsburgh, PA
  2. Clairton, PA
  3. Coraopolis, PA
Issue Date:
OSTI Identifier:
862810
Patent Number(s):
4018654
Assignee:
United States of America as represented by United States Energy (Washington, DC)
Patent Classifications (CPCs):
C - CHEMISTRY C10 - PETROLEUM, GAS OR COKE INDUSTRIES C10L - FUELS NOT OTHERWISE PROVIDED FOR
C - CHEMISTRY C10 - PETROLEUM, GAS OR COKE INDUSTRIES C10B - DESTRUCTIVE DISTILLATION OF CARBONAGEOUS MATERIALS FOR PRODUCTION OF GAS, COKE, TAR, OR SIMILAR MATERIALS
Resource Type:
Patent
Country of Publication:
United States
Language:
English
Subject:
pretreatment; coal; transport; available; coals; caking; possess; undesirable; characteristic; fusing; solid; mass; heated; plastic; temperature; range; 400; degree; involved; common; treatment; processes; gasification; hydrogenation; carbonization; unless; properties; destroyed; satisfactorily; process; disclosed; decaking; finely; divided; treating; zone; propelling; entrained; oyxgen-containing; gas; pipe; whereby; separate; steps; prior; combined; single; step; single step; temperature range; finely divided; containing gas; solid mass; treatment process; caking coals; coal entrained; divided coal; treatment processes; caking coal; /201/48/

Citation Formats

Johnson, Glenn E, Neilson, Harry B, Forney, Albert J, and Haynes, William P. Pretreatment of coal during transport. United States: N. p., 1977. Web.
Johnson, Glenn E, Neilson, Harry B, Forney, Albert J, & Haynes, William P. Pretreatment of coal during transport. United States.
Johnson, Glenn E, Neilson, Harry B, Forney, Albert J, and Haynes, William P. Tue . "Pretreatment of coal during transport". United States. https://www.osti.gov/servlets/purl/862810.
@article{osti_862810,
title = {Pretreatment of coal during transport},
author = {Johnson, Glenn E and Neilson, Harry B and Forney, Albert J and Haynes, William P},
abstractNote = {Many available coals are "caking coals" which possess the undesirable characteristic of fusing into a solid mass when heated through their plastic temperature range (about 400.degree. C.) which temperature range is involved in many common treatment processes such as gasification, hydrogenation, carbonization and the like. Unless the caking properties are first destroyed, the coal cannot be satisfactorily used in such processes. A process is disclosed herein for decaking finely divided coal during its transport to the treating zone by propelling the coal entrained in an oyxgen-containing gas through a heated transport pipe whereby the separate transport and decaking steps of the prior art are combined into a single step.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {1977},
month = {4}
}

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