Pressure gradient passivation of carbonaceous material normally susceptible to spontaneous combustion
Abstract
This invention is a process for the passivation or deactivation with respect to oxygen of a carbonaceous material by the exposure of the carbonaceous material to an oxygenated gas in which the oxygenated gas pressure is increased from a first pressure to a second pressure and then the pressure is changed to a third pressure. Preferably a cyclic process which comprises exposing the carbonaceous material to the gas at low pressure and increasing the pressure to a second higher pressure and then returning the pressure to a lower pressure is used. The cycle is repeated at least twice wherein the higher pressure may be increased after a selected number of cycles.
- Inventors:
- Issue Date:
- Research Org.:
- Albany Research Center (ARC), Albany, OR (United States)
- Sponsoring Org.:
- USDOE - Office of Fossil Energy (FE)
- OSTI Identifier:
- 923477
- Patent Number(s):
- 6146432
- Application Number:
- Patent application 09/354051; TRN: US200804%%1253
- Assignee:
- U.S. Patent and Trademark Office The United States of America as represented by the United States Deparment of Energy, Washington, DC (US)
- DOE Contract Number:
- None cited
- Resource Type:
- Patent
- Resource Relation:
- Patent File Date: 1999 Jul 15
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 36 MATERIALS SCIENCE; CARBONACEOUS MATERIALS; DEACTIVATION; INVENTIONS; OXYGEN; PASSIVATION; PRESSURE GRADIENTS; SPONTANEOUS COMBUSTION
Citation Formats
Ochs, Thomas L, Sands, William D, Schroeder, Karl, Summers, Cathy A, and Utz, Bruce R. Pressure gradient passivation of carbonaceous material normally susceptible to spontaneous combustion. United States: N. p., 2002.
Web.
Ochs, Thomas L, Sands, William D, Schroeder, Karl, Summers, Cathy A, & Utz, Bruce R. Pressure gradient passivation of carbonaceous material normally susceptible to spontaneous combustion. United States.
Ochs, Thomas L, Sands, William D, Schroeder, Karl, Summers, Cathy A, and Utz, Bruce R. Tue .
"Pressure gradient passivation of carbonaceous material normally susceptible to spontaneous combustion". United States. https://www.osti.gov/servlets/purl/923477.
@article{osti_923477,
title = {Pressure gradient passivation of carbonaceous material normally susceptible to spontaneous combustion},
author = {Ochs, Thomas L and Sands, William D and Schroeder, Karl and Summers, Cathy A and Utz, Bruce R},
abstractNote = {This invention is a process for the passivation or deactivation with respect to oxygen of a carbonaceous material by the exposure of the carbonaceous material to an oxygenated gas in which the oxygenated gas pressure is increased from a first pressure to a second pressure and then the pressure is changed to a third pressure. Preferably a cyclic process which comprises exposing the carbonaceous material to the gas at low pressure and increasing the pressure to a second higher pressure and then returning the pressure to a lower pressure is used. The cycle is repeated at least twice wherein the higher pressure may be increased after a selected number of cycles.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {Tue Jan 29 00:00:00 EST 2002},
month = {Tue Jan 29 00:00:00 EST 2002}
}
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