Comprehensive report to Congress Clean Coal Technology Program. Micronized coal reburning demonstration for NO[sub x] control on a 175-MWe wall-fired unit: A project proposed by Tennessee River Valley Authority

Technical Report · Mon Jun 01 04:00:00 EDT 1992

OSTI ID:7199191

This project will provide a full-scale demonstration of Micronized Coal Reburn (MCR) technology for the control of NO[sub x] on a wall-fired steam generator. This demonstration is expected to reduce NO[sub x] emissions by 50 to 60%. Micronized coal is coal that has been very finely pulverized (80% less than 325 mesh). This micronized coal, which may comprise up to 30% of the total fuel fired in the furnace, is fired high in the furnace in a fuel-rich reburn zone at a stoichiometry of 0.8. Above the reburn zone, overfire air is injected into the burnout zone at high velocity for good mixing to ensure complete combustion. Overall excess air is 15%. MCR technology reduces NO[sub x] emissions with minimal furnace modifications, and the improved burning characteristics of micronized coal enhance boiler performance.

• Research Organization: USDOE Assistant Secretary for Fossil Energy, Washington, DC (United States). Office of Clean Coal Technology
• Sponsoring Organization: DOE/FE
• OSTI ID: 7199191
• Report Number(s): DOE/FE-0256P; ON: DE92015633
• Country of Publication: United States
• Language: English

Related Subjects

01 COAL, LIGNITE, AND PEAT
010800 -- Coal
Lignite
& Peat-- Waste Management
014000 -- Coal
Lignite
& Peat-- Combustion
20 FOSSIL-FUELED POWER PLANTS
200200* -- Fossil-Fueled Power Plants-- Waste Management
54 ENVIRONMENTAL SCIENCES
540120 -- Environment
Atmospheric-- Chemicals Monitoring & Transport-- (1990-)
AIR POLLUTION CONTROL
BOILERS
CHALCOGENIDES
CHEMICAL REACTIONS
COMBUSTION
CONTROL
DEMONSTRATION PROGRAMS
ENVIRONMENTAL IMPACTS
NITROGEN COMPOUNDS
NITROGEN OXIDES
OXIDATION
OXIDES
OXYGEN COMPOUNDS
POLLUTION CONTROL
STAGED COMBUSTION
STEAM GENERATORS
THERMOCHEMICAL PROCESSES
VAPOR GENERATORS