Basic refractory and slag management for petcoke carbon feedstock in gasifiers
Abstract
The disclosure provides methods of operating a slagging gasifier using a carbon feedstock having a relatively high V.sub.2O.sub.5 to SiO.sub.2 ratio, such as petcoke. The disclosure generates a combined chemical composition in the feed mixture having less than 25 wt. % SiO.sub.2, greater than 20 wt. % V.sub.2O.sub.5, and greater than 20 wt. % CaO. The method takes advantage of a novel recognition that increased levels of SiO.sub.2 tend to decrease dissolution of the V.sub.2O.sub.3 which forms under the reducing conditions of the gasifier, and utilizes the CaO additive to establish a chemical phase equilibria comprised of lower melting compounds. The method further provides for control based on the presence of Al.sub.2O.sub.3 and FeO, and provides for a total combined chemical composition of greater than about 5 wt. % MgO for use with refractory linings comprised of MgO based refractory brick.
- Inventors:
- Issue Date:
- Research Org.:
- National Energy Technology Laboratory (NETL), Albany, OR (United States)
- Sponsoring Org.:
- USDOE
- OSTI Identifier:
- 1129391
- Patent Number(s):
- 8703021
- Application Number:
- 13/661,170
- Assignee:
- U.S. Department of Energy (Washington, DC)
- Patent Classifications (CPCs):
-
C - CHEMISTRY C10 - PETROLEUM, GAS OR COKE INDUSTRIES C10J - PRODUCTION OF PRODUCER GAS, WATER-GAS, SYNTHESIS GAS FROM SOLID CARBONACEOUS MATERIAL, OR MIXTURES CONTAINING THESE GASES
- Resource Type:
- Patent
- Resource Relation:
- Patent File Date: 2012 Oct 26
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
Citation Formats
Kwong, Kyei-Sing, Bennett, James P, and Nakano, Jinichiro. Basic refractory and slag management for petcoke carbon feedstock in gasifiers. United States: N. p., 2014.
Web.
Kwong, Kyei-Sing, Bennett, James P, & Nakano, Jinichiro. Basic refractory and slag management for petcoke carbon feedstock in gasifiers. United States.
Kwong, Kyei-Sing, Bennett, James P, and Nakano, Jinichiro. Tue .
"Basic refractory and slag management for petcoke carbon feedstock in gasifiers". United States. https://www.osti.gov/servlets/purl/1129391.
@article{osti_1129391,
title = {Basic refractory and slag management for petcoke carbon feedstock in gasifiers},
author = {Kwong, Kyei-Sing and Bennett, James P and Nakano, Jinichiro},
abstractNote = {The disclosure provides methods of operating a slagging gasifier using a carbon feedstock having a relatively high V.sub.2O.sub.5 to SiO.sub.2 ratio, such as petcoke. The disclosure generates a combined chemical composition in the feed mixture having less than 25 wt. % SiO.sub.2, greater than 20 wt. % V.sub.2O.sub.5, and greater than 20 wt. % CaO. The method takes advantage of a novel recognition that increased levels of SiO.sub.2 tend to decrease dissolution of the V.sub.2O.sub.3 which forms under the reducing conditions of the gasifier, and utilizes the CaO additive to establish a chemical phase equilibria comprised of lower melting compounds. The method further provides for control based on the presence of Al.sub.2O.sub.3 and FeO, and provides for a total combined chemical composition of greater than about 5 wt. % MgO for use with refractory linings comprised of MgO based refractory brick.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {Tue Apr 22 00:00:00 EDT 2014},
month = {Tue Apr 22 00:00:00 EDT 2014}
}
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