Study on co-combustion characteristics and kinetics of mixing fuel of sludge and coal

MENG Tao; XING Xiaolin; CHEN Chuanheng; ZHANG Jie; YANG Kun; ZHANG Tao

doi:10.19666/j.rlfd.202008261

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Study on co-combustion characteristics and kinetics of mixing fuel of sludge and coal

更新时间：2025-09-28

- Study on co-combustion characteristics and kinetics of mixing fuel of sludge and coal
- Thermal Power Generation Vol. 50, Issue 5, Pages: 87-93(2021)
- 作者机构：
  
  1. 安徽平圩发电有限责任公司
  2. 上海发电设备成套设计研究院有限责任公司
- 作者简介：
- 基金信息：
- DOI：10.19666/j.rlfd.202008261
  CLC： X703;TM619
- Published：2021
- 稿件说明：
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MENG Tao, XING Xiaolin, CHEN Chuanheng, et al. Study on co-combustion characteristics and kinetics of mixing fuel of sludge and coal[J]. Thermal power generation, 2021, 50(5): 87-93.
DOI：

MENG Tao, XING Xiaolin, CHEN Chuanheng, et al. Study on co-combustion characteristics and kinetics of mixing fuel of sludge and coal[J]. Thermal power generation, 2021, 50(5): 87-93. DOI： 10.19666/j.rlfd.202008261.

摘要

将污泥与煤以一定的比例掺混燃烧

有望提高混合燃料的燃烧特性

从而促进污泥的无害化处理和资源化利用。本文通过热重实验

研究了3种含水量较高的湿污泥与淮南煤直接掺烧时的燃烧特性

并通过2种典型的多重扫描速率方法计算了直接掺烧时的动力学参数。污泥在混合样品中的比例分别为10%、30%和50%(以质量计)。结果表明:污泥与煤掺烧时的失重主要发生在200℃之前和400～1 000℃之间;污泥比例越高

掺混样品在400～1 000℃之间的失重峰越窄;当污泥比例为10%时

掺混样品的失重行为与煤相似;煤单独燃烧以及煤与污泥等比例掺烧时的表观活化能均随着转化率的增加而减小

在相同的转化率下

后者的数值总是大于前者。

Abstract

Co-combustion of sludge with coal is expected to improve the combustion characteristics of fuel

which can promote the innocent treatment and resource utilization of sludge. In this work

the co-combustion characteristics of Huainan coal and three types of wet sludge with high moisture content were investigated by temperature-programmed thermogravimetric experiment. Two typical iso-conversional methods

Flynn-WallOzawa method and Kissinger-Akahira-Sunose method

were used to obtain the kinetic parameters during the cocombustion process. The proportions of sludge in blended samples are 10%

30% and 50%(by mass). The experimental results show that

the weight loss of the blended sample mainly occurs at lower than 200 ℃ and 400～1 000 ℃. The weight loss of the blended sample between 400～1 000 ℃ becomes more insignificant as the sludge proportion increases. When the sludge mass proportion accounts for 10%

the weight loss of the blended sample is similar to that of coal. The apparent activation energy of the individual coal combustion and cocombustion of sludge with coal decreases with the increasing conversion ratio. The latter is always higher than the former at the corresponding conversion ratio.

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