Emissions control for a boiler firing high-sulfur coal and coal/RDF mixtures

Conference · Sun Jan 01 04:00:00 EST 1989

OSTI ID:6436284

Livengood, C D; Huang, H S; Ohlsson, O O

Argonne National Laboratory (ANL) operates a stoker-fired boiler rated at 170,000 lb/h of steam as part of the site heating/cooling system. The flue-gas cleanup (FGC) equipment consists of a spray-dryer/fabric-filter combination, which was the first FGC system of its type to be installed and continuously operated on high-sulfur coal in the United States. Under a combined NO/sub x//SO/sub 2/ research program, changes in operating conditions and the addition of a chemical additive (NaOH) were studied. The results show that,under certain operating conditions, it is possible to achieve significant levels of combined control. Key variables include the spray-dryer exit temperature, the additive concentration, the SO/sub 2/ concentration in the flue gas, and the baghouse filter-cake thickness. A third set of tests involved firing several mixtures of coal and binder-enhanced refuse derived fuel (RDF). Up to 30% RDF (based on Btu content) was used with several different levels of lime binder. No significant operating problems were encountered, all ash samples passed the EP toxicity test, no detectable levels of dioxins or furans were found in the ash or flue gas, and both SO/sub 2/ and NO/sub x/ emissions at the boiler exit were decreased. 8 refs., 7 figs., 2 tabs.

• Research Organization: Argonne National Lab., IL (USA)
• DOE Contract Number: W-31109-ENG-38
• OSTI ID: 6436284
• Report Number(s): CONF-8903105-1; ON: DE89009838
• Country of Publication: United States
• Language: English

Related Subjects

01 COAL, LIGNITE, AND PEAT
010800* -- Coal
Lignite
& Peat-- Waste Management
20 FOSSIL-FUELED POWER PLANTS
200202 -- Fossil-Fueled Power Plants-- Waste Management-- Noxious Gas & Particulate Emissions
ADDITIVES
ALKALI METAL COMPOUNDS
BINDERS
CARBONACEOUS MATERIALS
CHALCOGENIDES
COAL
DRYING
EFFICIENCY
EMISSION
ENERGY SOURCES
EQUIPMENT
FABRIC FILTERS
FILTERS
FLUE GAS
FOSSIL FUELS
FUELS
GASEOUS WASTES
HOT GAS CLEANUP
HYDROGEN COMPOUNDS
HYDROXIDES
MATERIALS
NITROGEN COMPOUNDS
NITROGEN OXIDES
OXIDES
OXYGEN COMPOUNDS
POLLUTION CONTROL EQUIPMENT
PURIFICATION
REFUSE DERIVED FUELS
REMOVAL
SODIUM COMPOUNDS
SODIUM HYDROXIDES
SPRAY DRYING
SULFUR COMPOUNDS
SULFUR DIOXIDE
SULFUR OXIDES
WASTES