Emission control of N{sub 2}O by co-combustion of coal and biomass and narrow pulse corona discharge

Conference · Thu Jul 01 04:00:00 EDT 1999

OSTI ID:20006748

Liu, D C; Wang, J H; Chen, H P; Zhang, S H; Huang, L; Lu, J D

N{sub 2}O and NO{sub x} from coal combustion are the main pollutants that contribute to the acid rain, greenhouse effect and depletion of stratospheric ozone layer. The emission controls of N{sub 2}O and NO{sub x} have been investigated by many researchers in recent years. In order to control the N{sub 2}O, NO{sub x} emissions, co-combustion of coal and biomass in a bench-scale fluidized bed and a series of experiments of pulse corona discharge have been carried out in the National Laboratory of Coal Combustion (NLCC). Co-combustion of coal and biomass was studied to reveal the influences of bed temperature, coal nature and biomass fraction on the emission of N{sub 2}O. The test results indicate that the co-combustion of coal and biomass can reduce the emissions of N{sub 2}O. The higher the nitrogen content is and the lower the volatile matter content of coal is, the more the reduction of emission of N{sub 2}O is. The biomass fraction and the bed temperature also influence the emission of N{sub 2}O. Pulse corona discharge has been developed as a de-NO{sub x}/SO{sub x}/dust method in pulverized coal fired boiler. N{sub 2}O fraction in fluidized bed combustion boiler is much higher in comparison with pulverized coal fired boiler. Narrow pulse corona discharge can decompose N{sub 2}O. The test results reveal that the emission of N{sub 2}O decreases with the increase of voltage and pulse duration.

• Research Organization: Huazhong Univ. of Science and Technology, Wuhan (CN)
• OSTI ID: 20006748
• Report Number(s): CONF-990534--
• Country of Publication: United States
• Language: English

Related Subjects

01 COAL, LIGNITE, AND PEAT
09 BIOMASS FUELS
AIR POLLUTION CONTROL
BIOMASS
COAL
COCOMBUSTION
CORONA DISCHARGES
FLUIDIZED-BED COMBUSTION
NITROUS OXIDE
PARAMETRIC ANALYSIS