Second stage gasifier in staged gasification and integrated process
Abstract
A second stage gasification unit in a staged gasification integrated process flow scheme and operating methods are disclosed to gasify a wide range of low reactivity fuels. The inclusion of second stage gasification unit operating at high temperatures closer to ash fusion temperatures in the bed provides sufficient flexibility in unit configurations, operating conditions and methods to achieve an overall carbon conversion of over 95% for low reactivity materials such as bituminous and anthracite coals, petroleum residues and coke. The second stage gasification unit includes a stationary fluidized bed gasifier operating with a sufficiently turbulent bed of predefined inert bed material with lean char carbon content. The second stage gasifier fluidized bed is operated at relatively high temperatures up to 1400.degree. C. Steam and oxidant mixture can be injected to further increase the freeboard region operating temperature in the range of approximately from 50 to 100.degree. C. above the bed temperature.
- Inventors:
- Issue Date:
- Research Org.:
- Southern Company Services, Inc., Birmingham, AL (United States)
- Sponsoring Org.:
- USDOE
- OSTI Identifier:
- 1222641
- Patent Number(s):
- 9150800
- Application Number:
- 14/102,327
- Assignee:
- Southern Company Services, Inc. (Birmingham, AL)
- Patent Classifications (CPCs):
-
C - CHEMISTRY C01 - INORGANIC CHEMISTRY C01B - NON-METALLIC ELEMENTS
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
- DOE Contract Number:
- NT0000749
- Resource Type:
- Patent
- Resource Relation:
- Patent File Date: 2013 Dec 10
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 42 ENGINEERING
Citation Formats
Liu, Guohai, Vimalchand, Pannalal, and Peng, Wan Wang. Second stage gasifier in staged gasification and integrated process. United States: N. p., 2015.
Web.
Liu, Guohai, Vimalchand, Pannalal, & Peng, Wan Wang. Second stage gasifier in staged gasification and integrated process. United States.
Liu, Guohai, Vimalchand, Pannalal, and Peng, Wan Wang. Tue .
"Second stage gasifier in staged gasification and integrated process". United States. https://www.osti.gov/servlets/purl/1222641.
@article{osti_1222641,
title = {Second stage gasifier in staged gasification and integrated process},
author = {Liu, Guohai and Vimalchand, Pannalal and Peng, Wan Wang},
abstractNote = {A second stage gasification unit in a staged gasification integrated process flow scheme and operating methods are disclosed to gasify a wide range of low reactivity fuels. The inclusion of second stage gasification unit operating at high temperatures closer to ash fusion temperatures in the bed provides sufficient flexibility in unit configurations, operating conditions and methods to achieve an overall carbon conversion of over 95% for low reactivity materials such as bituminous and anthracite coals, petroleum residues and coke. The second stage gasification unit includes a stationary fluidized bed gasifier operating with a sufficiently turbulent bed of predefined inert bed material with lean char carbon content. The second stage gasifier fluidized bed is operated at relatively high temperatures up to 1400.degree. C. Steam and oxidant mixture can be injected to further increase the freeboard region operating temperature in the range of approximately from 50 to 100.degree. C. above the bed temperature.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {2015},
month = {10}
}
Works referenced in this record:
Flash pyrolysis of agglomerating coal
patent, January 1982
- Tyler, Ralph J.; Smith, Ian; Edwards, James H.
- US Patent Document 4,309,270
Fluid bed incineration catalyst
patent, September 1992
- Hirschberg, Eugene H.; Huff, Jr., George A.
- US Patent Document 5,145,826
Method for the gasification of coal and other carbonaceous material
patent, August 1993
- Levin, George B.
- US Patent Document 5,236,470
Conversion of petroleum residua to methane
patent, October 2005
- Nahas, Nicholas C.
- US Patent Document 6,955,695
System and method for converting biomass to ethanol via syngas
patent, January 2012
- Melnichuk, Larry Jack; Kelly, Karen Venita; Davis, Robert S.
- US Patent Document 8,088,832
Processes for hydromethanation of a carbonaceous feedstock
patent, September 2012
- Robinson, Earl T.; Raman, Pattabhi K.; Reiling, Vincent G.
- US Patent Document 8,268,899
Apparatus, Components and Operating methods for Circulating Fluidized Bed Transport Gasifiers and Reactors
patent-application, June 2011
- Vimalchand, Pannalal; Liu, Guohai; Peng, Wan Wang
- US Patent Application 12/969997; 20110146152