A 50-month gasifier mechanistic study and downstream unit process development program for the pressurized ash-agglomerating fluidized-bed gasification system

Technical Report · Wed Mar 01 04:00:00 EST 1989

DOI:https://doi.org/10.2172/5395230· OSTI ID:5395230

Haldipur, G. B.; Schmidt, D. K.; Smith, K. J.

This technology development program scope included studies of those processes and components necessary to convert coal, oxidant and steam into a clean fuel gas. The configuration of the processes and components constitutes a Gasifier Island which is a key concept in the application of the KRW gasification and cleanup technologies. This Gasifier Island typically consists of process units that perform the following functions: feedstock preparation, gasification, desulfurization, heat recovery, particulate removal, and solid waste treatment. The processing has been conducted in a variety of gasifier operating modes including air-blown and oxygen-blown, both with and without in-bed desulfurization which includes injection of limestone or dolomite sorbent. Process configurations downstream of the gasifier have included recycle and non-recycle cyclones, sintered filters, and zinc ferrite fixed beds. Because of the developmental nature of the KRW technology program and the flexibility of the pilot plant itself, a wide range of gasifier-cleanup process configurations has been investigated. The KRW pilot plant program evaluated a system comprised of the following major process elements: gasifier and in-bed desulfurizer, particulate cleanup train, external sulfur polishing bed, and solid waste disposal system.

• Research Organization: KRW Energy Systems, Inc., Madison, PA (USA)
• Sponsoring Organization: DOE/FE
• DOE Contract Number: AC21-84MC21063
• OSTI ID: 5395230
• Report Number(s): DOE/MC/21063-2740-Vol.1; ON: DE89011704
• Country of Publication: United States
• Language: English

Related Subjects

01 COAL, LIGNITE, AND PEAT
010404* -- Coal
Lignite
& Peat-- Gasification
010800 -- Coal
Lignite
& Peat-- Waste Management
AGGLOMERATING ASH PROCESS
CHARS
CHEMICAL REACTIONS
COAL GASIFICATION
CRYSTAL STRUCTURE
DESULFURIZATION
DOCUMENT TYPES
FILTERS
FLUIDIZED BEDS
FUNCTIONAL MODELS
GASIFICATION
HOT GAS CLEANUP
MANAGEMENT
MICROSTRUCTURE
PROCESS DEVELOPMENT UNITS
PROGRESS REPORT
PURIFICATION
PYROLYSIS PRODUCTS
THERMOCHEMICAL PROCESSES
WASTE MANAGEMENT