NOx and N2O Emissions During Fluidized Bed Combustion of Leather Wastes
NOx and N2O Emissions During Fluidized Bed Combustion of Leather Wastes
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DOI：
10.1115/1.2126986
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发表时间：
2003
影响因子：
3
通讯作者：
A. Bahillo;L. Armesto;A. Cabanillas;J. Otero
中科院分区：
文献类型：
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作者：
A. Bahillo;L. Armesto;A. Cabanillas;J. Otero
将生皮（动物皮）转化为皮革是一个复杂的过程，在此过程中产生大量废物。流化床燃烧已被推广到燃烧各种废物，这些废物的处置有问题，这表明其技术上是可行的。考虑到皮革废料的特性，特别是其热值（12.5-21 MJ/kg），是一种相当好的燃料。此外，皮革废料具有与其他生物质类似的高挥发性物质（65%）和不寻常的高氮含量（14%）。这项工作的第一个目标是研究流化床燃烧的皮革废料提出的实验结果，关于NOx和N2 O的排放量。在流化床中试装置上进行了一系列的实验，以了解操作参数如炉膛温度、气体中的氧含量、分级燃烧和停留时间对NOx和N2 O排放水平的重要性。尽管具有高的氮含量，低的N-燃料转化为NOx和N2 O在燃烧过程中测量的皮革废料在BFB。床层温度和氧含量是影响N2 O排放的最重要的单一参数，只有氧含量对NOx排放有显著影响。皮革废弃物具有很大的NOx/O2趋势，NOx随氧浓度的降低而降低，燃烧温度对NOx的影响不明显。分级燃烧不会减少NOx。版权所有© 2003 ASME
Transformation of hide (animal skins) into leather is a complicated process during which a significant amounts of wastes are generated. Fluidized bed combustion has been extended to burn different wastes that have problems with their disposal showing its technical feasibility. Considering the characteristics of the leather waste, especially the heating value (12.5–21 MJ/kg), it is a fairly good fuel. Moreover, leather waste has a high volatile matter, 65%, similar to other biomasses and an unusual high nitrogen content, 14%. The first objective of this work is to study the fluidized bed combustion of leather wastes presenting experimental results regarding NOx and N2 O emissions. A series of experiments have been carried out in a fluidized bed pilot plant to understand the importance of operating parameters such as furnace temperature, oxygen content in gases, staged combustion and residence time on the NOx and N2 O emission level. Despite having high nitrogen content, low conversion of N-fuel to NOx and N2 O was measured during the combustion of leather waste in BFB. Bed temperature and oxygen content were found as the most important single parameters on N2 O emission and only oxygen content has a significant influence on NOx emission. Leather waste exhibits a great NOx/O2 trend; NOx decreases as the oxygen concentration decreases and the effect of the combustion temperature on NOx is insignificant. Staged combustion does not give a reduction in NOx.Copyright © 2003 by ASME