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

Technical Report · Sat Sep 01 04:00:00 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

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
54 ENVIRONMENTAL SCIENCES
540120 -- Environment
Atmospheric-- Chemicals Monitoring & Transport-- (1990-)
CHALCOGENIDES
CONTROL
DEMONSTRATION PROGRAMS
DISPERSIONS
DROPLETS
ENVIRONMENTAL POLICY
FLUE GAS
GASEOUS WASTES
GOVERNMENT POLICIES
MIXTURES
OXIDES
OXYGEN COMPOUNDS
PARTICLES
POLLUTION CONTROL
RETROFITTING
SLURRIES
SORBENT INJECTION PROCESSES
SULFUR COMPOUNDS
SULFUR DIOXIDE
SULFUR OXIDES
SUSPENSIONS
US CLEAN COAL TECHNOLOGY PROGRAM
WASTES