Factors determining the element behavior in municipal solid waste incinerators. 1. Field studies
Factors determining the element behavior in municipal solid waste incinerators. 1. Field studies
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DOI：
10.1021/es991078m
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发表时间：
2000-06-15
影响因子：
11.4
通讯作者：
Moench, H
中科院分区：
文献类型：
--
作者：
Belevi, H;Moench, H
本文研究了垃圾焚烧炉中元素行为的影响因素。该方法主要基于全尺寸焚烧炉的现场测量。物流分析是在焚烧炉中进行的。主要焦点放在炉子里的过程上。以下主变量决定元素向炉内原料气的转移行为：(I)输入废物中元素的存在和分布；(Ii)温度、氧化还原条件和炉床中除氧和氯以外的反应伙伴的氯含量；以及(Iii)炉床中的停留时间和混合条件。29种元素根据它们向炉内粗煤气和炉底灰分的转移行为被分为两类。结果表明，硅、铁、钴、铬、锰、镍、磷、铝、钙、镁、钠、铍、锂、钛、钾等元素主要通过夹带转移到原料气中。这些元素在输入废物中的存在和分布主要决定了它们的转移系数。蒸发是剩余元素向原料气转移的主要过程。F、铜、钼、铅、锡、锌、溴、锑、碳、S、氯、砷、镉、汞等元素之间的迁移行为不同，除元素在废物中的赋存和分布外，物理化学条件和动力学因素也是主要因素。
This paper investigates the factors determining element behavior in municipal solid waste incinerators. The method is based primarily on field measurements in full-scale incinerators. Material flow analyses are carried out in an incinerator. The main focus is placed on the processes in the furnace. The following master variables determine element transfer behavior to the raw gas in the furnace: (i) occurrence and distribution of the elements in the input waste; (ii) temperature, redox conditions, and content of chlorine and of reaction partners other than oxygen and chlorine in the furnace bed, and (iii) residence time and mixing conditions in the furnace bed. Twenty-nine elements are divided into two groups with respect to their transfer behavior to the raw gas and to the bottom ash in the furnace. The results indicate that the elements Si, Fe, Co, Cr, Mn, Ni, P, Al, Ca, Mg, Na, Be, Li, Ti, and K are transferred mainly to the raw gas by entrainment. Occurrence and distribution of these elements in the input waste determine primarily their transfer coefficients. Evaporation is the main transfer process for the remaining investigated elements to the raw gas. In addition to the occurrence and distribution of the elements in the input waste, physical and chemical conditions as well as kinetics are the main factors responsible for the different transfer behaviors between the elements F, Cu, Mo, Pb, Sn, Zn, Br, Sb, C, S, Cl, As, Cd, and Hg.