PowerChip{reg_sign} gypsum: A new commercial product from the combustion of high sulfur coals and Orimulsion{reg_sign}
- Pure Air, Allentown, PA (United States)
- H. Colijn and Associates, Inc., Pisgah Forrest, NC (United States)
In order to meet with the SO{sub 2} reduction provisions of the 1990 Clean Air Act Amendments, US utilities are faced with several compliance options. One of these is the installation of flue gas desulfurization facilities which produce either a by-product calcium sulfite sludge which must be landfilled, or a forced oxidized industrial gypsum. This gypsum can be difficult and time consuming to unload from railcars or trucks due to the fact that it has poor flowability. After 5 years of development, a technology now exists and is being commercially demonstrated which agglomerates industrial FGD gypsum into a physical form which may be directly compatible with the currently installed equipment traditionally used to handle natural rock gypsums in wallboard and cement plants. This technology uses pressure roll forced compaction to agglomerate the wet finely divided powder gypsum into a durable chip form of industrial gypsum. This novel technology known as PowerChip{reg_sign} gypsum has been developed and patented by Pure Air of Allentown, Pennsylvania, US. A pilot commercialization and demonstration is ongoing at Pure Air`s Bailly Plant in Chesterton, Indiana. The results, data and performance of the product from this demonstration unit will be discussed. Flowability tests were undertaken to evaluate handling properties of the Powder-Chip gypsum and suggestions for handling equipment will be discussed and compared to the traditional powder form or wet filter cake gypsum and natural gypsum rock. In essence, current FGD technology enables continued burning of high sulfur coal, or Orimulsion{reg_sign} in compliance with environmental regulations, while producing an industrial gypsum product.
- OSTI ID:
- 458501
- Report Number(s):
- CONF-960322-; ISBN 0-932066-21-6; TRN: IM9717%%287
- Resource Relation:
- Conference: 21. international technical conference on coal utilization and fuel systems, Clearwater, FL (United States), 18-21 Mar 1996; Other Information: PBD: [1996]; Related Information: Is Part Of Proceedings of the 21. international technical conference on coal utilization and fuel systems; Sakkestad, B.A. [ed.]; PB: 859 p.
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
01 COAL, LIGNITE, AND PEAT
04 OIL SHALES AND TAR SANDS
GYPSUM
WASTE PRODUCT UTILIZATION
FOSSIL-FUEL POWER PLANTS
AGGLOMERATION
COAL
BITUMENS
MATERIALS HANDLING
FLUE GAS
DESULFURIZATION
FUEL SLURRIES
SOLIDS FLOW
CHEMICAL PROPERTIES
PHYSICAL PROPERTIES
MECHANICAL PROPERTIES