Comprehensive report to Congress: Clean Coal Technology program: Confined zone dispersion low-NO sub x flue gas desulfurization demonstration

Technical Report · Sat Sep 01 00:00:00 EDT 1990

DOI:https://doi.org/10.2172/6399477· OSTI ID:6399477

This report describes a project selected for funding under the US Clean Coal Technology Program. This project will demonstrate the removal of SO{sub 2} from the flue gas of a utility coal-fired boiler retrofitted with the confined zone dispersion-flue gas desulfurization (CZD-FGD) process. In the CZD-FGD process, a finely atomized slurry of a highly reactive pressure hydrated dolomitic lime is sprayed into the flue gas stream between the boiler air heater(s) and the particulate collection equipment. The lime slurry is injected into the center of the duct and the type and position of the spray nozzles are designed to produce a cone of fine spray. As the cone of spray moves nozzles are designed to produce a cone of fine spray. As the cone of spray moves downstream and expands, the gas within the cone cools and the SO{sub 2} is rapidly absorbed by the liquid droplets. This fast drying time precludes wet particle build-up in the duct and allows carry-over of the dry reaction products and the unreacted lime in the flue gas, which will be removed by the particulate collection equipment. 6 figs., 1 tab.

• Research Organization: USDOE Assistant Secretary for Fossil Energy, Washington, DC (USA). Office of Clean Coal Technology
• Sponsoring Organization: DOE/FE
• OSTI ID: 6399477
• Report Number(s): DOE/FE-0203P; ON: DE91002564
• Country of Publication: United States
• Language: English

Related Subjects

20 FOSSIL-FUELED POWER PLANTS
01 COAL, LIGNITE, AND PEAT
54 ENVIRONMENTAL SCIENCES
FLUE GAS
POLLUTION CONTROL
SULFUR DIOXIDE
DEMONSTRATION PROGRAMS
DROPLETS
ENVIRONMENTAL POLICY
RETROFITTING
SLURRIES
SORBENT INJECTION PROCESSES
US CLEAN COAL TECHNOLOGY PROGRAM
CHALCOGENIDES
CONTROL
DISPERSIONS
GASEOUS WASTES
GOVERNMENT POLICIES
MIXTURES
OXIDES
OXYGEN COMPOUNDS
PARTICLES
SULFUR COMPOUNDS
SULFUR OXIDES
SUSPENSIONS
WASTES
200202* - Fossil-Fueled Power Plants- Waste Management- Noxious Gas & Particulate Emissions
010800 - Coal
Lignite
& Peat- Waste Management
540120 - Environment
Atmospheric- Chemicals Monitoring & Transport- (1990-)