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The effect of the oxygen fraction on volatile organic compound emissions from waste combustion

 

作者: X. J. Zhang,  

 

期刊: Journal of Environmental Science and Health, Part A  (Taylor Available online 1998)
卷期: Volume 33, issue 1  

页码: 147-163

 

ISSN:1093-4529

 

年代: 1998

 

DOI:10.1080/10934529809376723

 

出版商: Taylor & Francis Group

 

关键词: Volatile organic compound (VOC);household refuse;combustion

 

数据来源: Taylor

 

摘要:

Volatile organic compound (VOC) emissions from the combustion of household refuse were investigated in a 20 kW experimental boiler with a stationary grate. Swedish household refuse from kitchens was manually fed into the combustion chamber. The oxygen fraction ranged from 0.068 to 0.136 on dry basis. The gas temperature in the chamber center ranged from 860 to 980 K. The measurements made included volatile organic compounds (VOCs), carbon monoxide and carbon dioxide. The identification and analysis of organic pollutants were performed by thermal desorption Gas Chromatography and Mass Spectrometry (GC/MS) with a Tenax sampling train. The major organic emissions identified were toluene and various benzenes. Total volatile organic compound (TVOC) emissions were between 2.85 and 8.31 mg/Nm3. The concentration of toluene was up to 93.82 μg/Nm3, which corresponded to the lowest oxygen fraction, 0.068, and highest carbon monoxide emission, 606 mg/Nm3on average. In general, the emissions of organic pollutants increase with the decrease in oxygen fraction. This may have been due to oxygen deficiency which results in incomplete combustion. For naphthalene and phenol, the concentration were very low, in a range between 0.12 and 0.60 μg/Nm3. The emission pattern was not so clear and more data are needed.

 

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