Document Detail


Effect of volatile-char interaction on the NO emission from coal combustion.
MedLine Citation:
PMID:  18678004     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
To clarify the effects of volatile-char interaction on the redistribution of fuel-N to N2 during devolatilization and the reduction of NO through gas-solid reactions during combustion, two types of experiments were performed on a novel reactor. The separate combustion of volatile and char and the combustion of entrained pulverized coal, and the formation of NO was examined between 800 and 1100 degrees C by using four typical Chinese coals with different ranks. The effect of volatile-char interaction on fuel-N conversion to NO during combustion was elucidated through comparing the NO emissions from the two types of combustion experiments. The results show that the volatile-char interaction is more important in the redistribution of fuel-N to N2 during devolatilization than in the reduction of NO over 900 degrees C, and a contrary conclusion is obtained below 850 degrees C for all used coals. A specific parameter has been proposed to characterize the relative importance of the volatile-char interaction in the redistribution of fuel-N to N2 during devolatilization to the interaction in the reduction of NO to N2 during simulataneous combustion of volatile and char. The results are of significance for minimizing the NO formation in industrial combustion processes.
Authors:
Mingyu Yao; Defu Che; Yanhua Liu; Yinhe Liut
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Publication Detail:
Type:  Journal Article; Research Support, Non-U.S. Gov't    
Journal Detail:
Title:  Environmental science & technology     Volume:  42     ISSN:  0013-936X     ISO Abbreviation:  Environ. Sci. Technol.     Publication Date:  2008 Jul 
Date Detail:
Created Date:  2008-08-05     Completed Date:  2008-10-09     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  0213155     Medline TA:  Environ Sci Technol     Country:  United States    
Other Details:
Languages:  eng     Pagination:  4771-6     Citation Subset:  IM    
Affiliation:
State Key Laboratory of Multiphase Flow in Power Engineering, School of Energy and Power Engineering, Xi'an Jiaotong University, Xi'an 710049, China.
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MeSH Terms
Descriptor/Qualifier:
Air Pollution / prevention & control*
Charcoal / chemistry*
China
Coal / analysis*
Nitrous Oxide / chemistry*
Oxidation-Reduction
Temperature
Volatilization
Chemical
Reg. No./Substance:
0/Coal; 10024-97-2/Nitrous Oxide; 16291-96-6/Charcoal

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine


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