Co-combustion of textile dyeing sludge with cattle manure: Assessment of thermal behavior, gaseous products, and ash characteristics
Co-combustion of textile dyeing sludge with cattle manure: Assessment of thermal behavior, gaseous products, and ash characteristics
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DOI：
10.1016/j.jclepro.2019.119950
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发表时间：
2020-04-20
影响因子：
11.1
通讯作者：
Buyukada, Musa
中科院分区：
文献类型：
--
作者：
Zhang, Junhui;Sun, Guang;Buyukada, Musa
焚烧不仅可以有效地减少废物流，而且还可以提高能源回收率。但印染污泥可燃物含量低、热值低，燃烧性能差。本研究提出通过与牛粪混合燃烧来弥补这一缺陷。共燃烧在350至500摄氏度之间对热降解产生抑制作用，在600至1100摄氏度之间对热降解产生积极作用。最强的增强发生在共混比为1：1时。共燃降低了SO2的最大排放量，并产生更少的气体物种，包括CO2，CO，H2O，酮，醛，和低分子量链烷烃。实验和模拟结果表明，混合灰的矿物组成为SiO2、Fe2O3、CaMgSi2O6、NaAlSiO4、NaAlSi3O8和Na2SO4。混合灰由于形成低温共晶而具有最低的熔融温度。这些发现为控制气体排放、能源回收和灰烬再利用提供了见解，这对开发更清洁和可持续的共燃系统至关重要。(C)2020爱思唯尔有限公司保留所有权利。
Not only can the incineration provide an effective waste stream reduction, but also it enhances the energy recovery. However, the combustion performance of textile dyeing sludge is poor due to its low combustible content and low calorific value. This study proposes to compensate for the defects by its co-combustion with cattle manure. The co-combustion exerted an inhibitive effect between 350 and 500 degrees C and a positive effect between 600 and 1100 degrees C on the thermal degradation. The strongest enhancement occurred with the blend ratio of 1:1. The co-combustion reduced the maximum SO2 emission and produced fewer gas species including CO2, CO, H2O, ketones, aldehydes, and low molecular weight chain-alkanes. The experimental and simulation results about mineral transformations showed that the blend ash consisted of SiO2, Fe2O3, CaMgSi2O6, NaAlSiO4, NaAlSi3O8, and Na2SO4. The blend ash had the lowest fusion temperature due to the formation of a low temperature eutectic. The findings provide insights into controls over gas emissions, energy recovery, and ash reutilization, essential to the development of cleaner and sustainable co-combustion systems. (C) 2020 Elsevier Ltd. All rights reserved.