Evaluation of FGD (flue gas desulfurization) dry-injection sorbents and additives. Volume 1. Development of high reactivity sorbents. Final report, January 1986-December 1987

Technical Report · Mon May 01 04:00:00 EDT 1989

OSTI ID:5573301

Jozewicz, W; Chang, J C.S.

This report discusses recent work addressing lime enhancement by slurrying with siliceous materials and testing in a laboratory packed-bed reactor, as part of EPA's efforts to develop low-cost, retrofit flue-gas-cleaning technology, including the development of highly reactive sorbents. The solids generated from a furnace limestone-injection process were reactivated by slurrying at elevated temperatures. Compared with untreated solids, reactivity toward SO{sub 2} was significantly enhanced by hydration. The SO{sub 2} capture by solids increased with increasing time and temperature of hydration. The dry sorbents produced by slurrying several diatomaceous earths, or montmorillonitic clays, with lime were found to be highly reactive with SO{sub 2}. The most reactive sorbent was generated by slurrying silica/lime at a weight ratio of 1 to 1. The morphology of the developed sorbents was characterized. Several additives were tested to evaluate their potential to promote the lime/silica reaction rate and increase sorbent reactivity.

• Research Organization: Acurex Corp., Research Triangle Park, NC (USA). Environmental Systems Div.
• OSTI ID: 5573301
• Report Number(s): PB-89-208920/XAB
• Country of Publication: United States
• Language: English

Related Subjects

01 COAL, LIGNITE, AND PEAT
010800* -- Coal
Lignite
& Peat-- Waste Management
42 ENGINEERING
424000 -- Engineering-- Pollution Control Equipment-- (1980-1989)
ADDITIVES
ADSORBENTS
AIR POLLUTION CONTROL
ALKALINE EARTH METAL COMPOUNDS
BOILERS
CALCIUM COMPOUNDS
CALCIUM OXIDES
CARBONATE ROCKS
CHALCOGENIDES
CHEMICAL REACTIONS
CONTROL
DESIGN
DESULFURIZATION
DIATOMACEOUS EARTH
DISPERSIONS
DOCUMENT TYPES
EQUIPMENT
FLUE GAS
GASEOUS WASTES
HYDRATION
INDUSTRIAL WASTES
LIMESTONE
MIXTURES
OXIDES
OXYGEN COMPOUNDS
PERFORMANCE
POLLUTION CONTROL
POLLUTION CONTROL EQUIPMENT
POLLUTION SOURCES
PROGRESS REPORT
ROCKS
SCRUBBERS
SEDIMENTARY ROCKS
SILICON COMPOUNDS
SILICON OXIDES
SLURRIES
SOLVATION
STATIONARY POLLUTANT SOURCES
SULFUR COMPOUNDS
SULFUR DIOXIDE
SULFUR OXIDES
SUSPENSIONS
WASTES