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
·
OSTI ID:659285
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
- OSTI ID:
- 659285
- Report Number(s):
- DOE/FE--0256P; ON: DE92015633; NC: NONE
- Country of Publication:
- United States
- Language:
- English
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