Journal
ENERGY SOURCES PART A-RECOVERY UTILIZATION AND ENVIRONMENTAL EFFECTS
Volume 36, Issue 2, Pages 212-221Publisher
TAYLOR & FRANCIS INC
DOI: 10.1080/15567036.2010.536830
Keywords
coal; combustion; fluidized bed combustor; polycyclic aromatic hydrocarbons
Funding
- China Postdoctoral Science Foundation [20090460934]
- Foundation of State Key Laboratory of Coal Combustion [FSKLCC1114]
- Youth Scientist Dawn Foundation of Wuhan Government [201050231047]
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The emission characteristic of polycyclic aromatic hydrocarbons during coal combustion was studied in a fluidized bed combustor. The reaction temperature range was 750-850 degrees C and oxygen concentration studied was 3-12%. The experimental results demonstrated that the maximum amount of polycyclic aromatic hydrocarbons in flue gas occurred at 800 degrees C; above this temperature, polycyclic aromatic hydrocarbons concentration was decreased with the temperature increase. Contrary to temperature, the high oxygen content has a positive effect on suppressing the formation of polycyclic aromatic hydrocarbons. The amount of total polycyclic aromatic hydrocarbons reduced from 0.115 to 0.032 g/L as the oxygen content rose from 3 to 12%. Moreover, it was also found that the total toxic equivalent quantity of polycyclic aromatic hydrocarbons was dominated by the five-ring's polycyclic aromatic hydrocarbons, especially the Benzo (a) pyrene, Benzo (b) fluoranthene, and Benzo (k) fluoranthene.
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