Apparatus, components and operating methods for circulating fluidized bed transport gasifiers and reactors
Abstract
The improvements proposed in this invention provide a reliable apparatus and method to gasify low rank coals in a class of pressurized circulating fluidized bed reactors termed "transport gasifier." The embodiments overcome a number of operability and reliability problems with existing gasifiers. The systems and methods address issues related to distribution of gasification agent without the use of internals, management of heat release to avoid any agglomeration and clinker formation, specific design of bends to withstand the highly erosive environment due to high solid particles circulation rates, design of a standpipe cyclone to withstand high temperature gasification environment, compact design of seal-leg that can handle high mass solids flux, design of nozzles that eliminate plugging, uniform aeration of large diameter Standpipe, oxidant injection at the cyclone exits to effectively modulate gasifier exit temperature and reduction in overall height of the gasifier with a modified non-mechanical valve.
- Inventors:
- Publication Date:
- Research Org.:
- Southern Company Services, Inc., Birmingham, AL (United States)
- Sponsoring Org.:
- USDOE
- OSTI Identifier:
- 1171097
- Patent Number(s):
- 8,961,629
- Application Number:
- 12/969,997
- Assignee:
- Southern Company Services, Inc. (Birmingham, AL)
- DOE Contract Number:
- FC21-90MC25140
- Resource Type:
- Patent
- Resource Relation:
- Patent File Date: 2010 Dec 16
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 22 GENERAL STUDIES OF NUCLEAR REACTORS
Citation Formats
Vimalchand, Pannalal, Liu, Guohai, and Peng, Wan Wang. Apparatus, components and operating methods for circulating fluidized bed transport gasifiers and reactors. United States: N. p., 2015.
Web.
Vimalchand, Pannalal, Liu, Guohai, & Peng, Wan Wang. Apparatus, components and operating methods for circulating fluidized bed transport gasifiers and reactors. United States.
Vimalchand, Pannalal, Liu, Guohai, and Peng, Wan Wang. 2015.
"Apparatus, components and operating methods for circulating fluidized bed transport gasifiers and reactors". United States. https://www.osti.gov/servlets/purl/1171097.
@article{osti_1171097,
title = {Apparatus, components and operating methods for circulating fluidized bed transport gasifiers and reactors},
author = {Vimalchand, Pannalal and Liu, Guohai and Peng, Wan Wang},
abstractNote = {The improvements proposed in this invention provide a reliable apparatus and method to gasify low rank coals in a class of pressurized circulating fluidized bed reactors termed "transport gasifier." The embodiments overcome a number of operability and reliability problems with existing gasifiers. The systems and methods address issues related to distribution of gasification agent without the use of internals, management of heat release to avoid any agglomeration and clinker formation, specific design of bends to withstand the highly erosive environment due to high solid particles circulation rates, design of a standpipe cyclone to withstand high temperature gasification environment, compact design of seal-leg that can handle high mass solids flux, design of nozzles that eliminate plugging, uniform aeration of large diameter Standpipe, oxidant injection at the cyclone exits to effectively modulate gasifier exit temperature and reduction in overall height of the gasifier with a modified non-mechanical valve.},
doi = {},
url = {https://www.osti.gov/biblio/1171097},
journal = {},
number = ,
volume = ,
place = {United States},
year = {Tue Feb 24 00:00:00 EST 2015},
month = {Tue Feb 24 00:00:00 EST 2015}
}
Works referenced in this record:
Heat recovery process in coal gasification
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- Arisaki, Kenji
- US Patent Document 4,464,183
Method for recovering hydrocarbons from solids
patent, April 1986
- Duncan, Dennis A.; Woebeke, Herman
- US Patent Document 4,585,543
Pseudoisothermal Ammonia Process
patent-application, July 2008
- Strait, Richard B.
- US Patent Application 12/048596; 20080161428