Experimental and kinetic study on pyrolysis and combustion characteristics of sugar tar waste liquid (STWL): Effects of water contents and O<sub>2</sub> concentrations

Luo Junwei; Yang Long; Zhang Zewu; Li Feixiang; Zha Xiaojian; Jiang Qiaoyun; Luo Cong; Zhang Liqi

doi:10.1016/j.cjche.2025.09.010

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Experimental and kinetic study on pyrolysis and combustion characteristics of sugar tar waste liquid (STWL): Effects of water contents and O₂ concentrations

Updated：2026-05-14

- Experimental and kinetic study on pyrolysis and combustion characteristics of sugar tar waste liquid (STWL): Effects of water contents and O₂ concentrations
- Experimental and kinetic study on pyrolysis and combustion characteristics of sugar tar waste liquid (STWL): Effects of water contents and O₂ concentrations
- 中国化学工程学报（英文） 2026年90卷第2期页码：59-70
- Affiliations：
  
  State Key Laboratory of Coal Combustion, School of Energy and Power Engineering, Huazhong University of Science and Technology, Wuhan 430074, China
  Wuhan Boiler Energy Engineering Co., Ltd, Wuhan 30200, China
  Hubei Special Equipment Inspection and Testing Institute, Wuhan 430074, China
- Author bio：
  
  Corresponding author. E-mail address: zwzhang@hust.edu.cn (Z. Zhang).
- Funds：
  
  The authors are grateful for the financial support from the Key Research and Development Program of Hubei Province(2023BAB038);the Foundation of State Key Laboratory of Coal Combustion
- DOI：10.1016/j.cjche.2025.09.010
  中图分类号：
- 收稿：2025-03-09，
  
  修回：2025-07-01，
  
  录用：2025-09-27，
  
  网络首发：2025-10-08，
  
  纸质出版：2026-02
- Accepted：
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Luo Junwei, Yang Long, Zhang Zewu, 等. Experimental and kinetic study on pyrolysis and combustion characteristics of sugar tar waste liquid (STWL): Effects of water contents and O₂ concentrations[J]. 中国化学工程学报（英文）, 2026,90(2):59-70. DOI: 10.1016/j.cjche.2025.09.010.

Luo Junwei, Yang Long, Zhang Zewu, et al. Experimental and kinetic study on pyrolysis and combustion characteristics of sugar tar waste liquid (STWL): Effects of water contents and O₂ concentrations[J]. Chinese Journal of Chemical Engineering, 2026, 90(2): 59-70. DOI: 10.1016/j.cjche.2025.09.010.
Luo Junwei, Yang Long, Zhang Zewu, 等. Experimental and kinetic study on pyrolysis and combustion characteristics of sugar tar waste liquid (STWL): Effects of water contents and O₂ concentrations[J]. 中国化学工程学报（英文）, 2026,90(2):59-70. DOI: 10.1016/j.cjche.2025.09.010. DOI：

Luo Junwei, Yang Long, Zhang Zewu, et al. Experimental and kinetic study on pyrolysis and combustion characteristics of sugar tar waste liquid (STWL): Effects of water contents and O₂ concentrations[J]. Chinese Journal of Chemical Engineering, 2026, 90(2): 59-70. DOI: 10.1016/j.cjche.2025.09.010. DOI：

摘要

Abstract

In this study

the pyrolysis and combustion characteristics of sugar tar waste liquid (STWL) affected by different water contents and oxygen concentrations are studied by using a Thermogravimetric analysis

and the kinetic parameters of the pyrolysis and combustion are obtained by the Coats-Redfern integral method. The results show that both the pyrolysis process and the combustion process of the STWLs are divided into two stages under the different water contents and oxygen concentrations. The low and high temperature ranges for pyrolysis and combustion process are below 420℃ and 420—500℃ and below 400℃ and 400 -500℃

respectively. As the water contents increase

the pyrolysis initial temperature

gradually decreases and the comprehensive pyrolysis characteristic index

also decreases for the pyrolysis process. The

increases from 224℃ to 350℃

and the index

decreases from 3.30×10

-4

to 0.811×10

-4

·min

-2

·℃

-3

. The combustion ignition temperature

c increases and the comprehensive combustion characteristic index

decreases. When the oxygen concentration increases

the ignition temperature and the burnout temperature remain almost constant

with variations of 3.6% and 2.0%

respectively. Besides

the pyrolysis and combustion process of the STWL obeys the stochastic nucleation and subsequent growth model

i.e.

[-ln(1 -α)

]

. These results are expected to provide some valuable guidance for organic waste liquid incineration treatment.

关键词

Keywords

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Experimental and kinetic study on pyrolysis and combustion characteristics of sugar tar waste liquid (STWL): Effects of water contents and O2 concentrations

Experimental and kinetic study on pyrolysis and combustion characteristics of sugar tar waste liquid (STWL): Effects of water contents and O2 concentrations

DOI：10.1016/j.cjche.2025.09.010

摘要

Abstract

关键词

Keywords

references

Experimental and kinetic study on pyrolysis and combustion characteristics of sugar tar waste liquid (STWL): Effects of water contents and O₂ concentrations

Experimental and kinetic study on pyrolysis and combustion characteristics of sugar tar waste liquid (STWL): Effects of water contents and O₂ concentrations