基于化学反应动力学煤矸石燃烧优化模型研究

doi:10.11949/0438-1157.20250318

化工学报 ›› 2025, Vol. 76 ›› Issue (12): 6410-6422.DOI: 10.11949/0438-1157.20250318

• 催化、动力学与反应器 • 上一篇下一篇

基于化学反应动力学煤矸石燃烧优化模型研究

李丹¹(), 于秀恒¹, 陈巨辉¹, 苏潼¹, ZHURAVKOV Michael²^,³, LAPATSIN Siarhel²^,³, 姜文锐³

^1.哈尔滨理工大学机械动力工程学院，黑龙江哈尔滨 150080
^2.海空装备齿轮传动国际合作黑龙江省重点实验室，黑龙江哈尔滨 150001
^3.哈尔滨工业大学机电工程学院，黑龙江哈尔滨 150001

收稿日期:2025-03-28 修回日期:2025-09-28 出版日期:2025-12-31 发布日期:2026-01-23
通讯作者: 李丹
作者简介:李丹（1987—），男，博士，副教授，b0222li@126.com
基金资助:
黑龙江省揭榜挂帅项目(2023ZXJ04A02);黑龙江省揭榜挂帅项目(2023ZXJ04A01);黑龙江省重点研发计划(GA21A301)

Research on optimization model of gangue combustion based on chemical reaction kinetics

Dan LI¹(), Xiuheng YU¹, Juhui CHEN¹, Tong SU¹, Michael ZHURAVKOV²^,³, Siarhel LAPATSIN²^,³, Wenrui JIANG³

^1.School of Mechanical and Power Engineering, Harbin University of Science and Technology, Harbin 150080, Heilongjiang, China
^2.Heilongjiang Provincial Key Laboratory for International Cooperation on Gear Transmission of Maritime and Air Equipment, Harbin 150001, Heilongjiang, China
^3.School of Mechatronics Engineering, Harbin Institute of Technology, Harbin 150001, Heilongjiang, China

Received:2025-03-28 Revised:2025-09-28 Online:2025-12-31 Published:2026-01-23
Contact: Dan LI

摘要/Abstract

摘要：

本文针对煤矸石及低热值煤层气燃烧特性，利用煤矸石和煤层气在循环流化床锅炉中混燃方式，基于化学反应动力学方法，对煤矸石与煤层气在流化床内混燃中的热解反应进行优化模拟，得出化学反应动力学优化燃烧模型，将模拟结果与实验数据进行对比验证了模型的正确性和可靠性。对煤矸石和煤层气在循环流化床锅炉中高效混燃的化学反应速率关键参数进行了分析与讨论；模拟得到了不同化学反应动力学参数对化学反应速率的影响。结果表明，优化模型能降低炉膛燃烧区域的化学反应速率误差，优化模拟对于掌握燃烧/反应状况和排放控制尤为关键；且优化组在主反应区具备显著优势，能够帮助进一步提升燃烧效率、准确预测产物浓度、减少能量浪费和污染物生成。反映了炉膛内部工况对优化模型敏感性更高的事实，证明通过优化可进一步提升模型在全高度范围内的适用性和准确度。

关键词: 煤矸石, 化学反应动力学, 优化模拟, 数值模拟

Abstract:

This paper investigates the combustion characteristics of gangue and low-calorific-value coalbed methane. By using the co-combustion mode of gangue and coalbed methane in a circulating fluidized bed (CFB) boiler, and using chemical reaction kinetics, we optimize the pyrolysis reaction of the co-combustion of gangue and coalbed methane in the fluidized bed and derive a chemical reaction kinetics optimization combustion model. The simulation results are compared with experimental data to verify the correctness and reliability of the model. The key parameters of the chemical reaction rate of gangue and coal bed methane in the efficient mixing and burning in circulating fluidized bed boiler are analyzed and discussed; the changes and effects of different chemical reaction kinetics parameters on the chemical reaction rate are simulated. The results show that the optimized model can reduce the error of chemical reaction rate in the combustion region of the furnace, and the optimized simulation is especially critical for the combustion/reaction conditions and emission control; and the optimized group has significant advantages in the main reaction region, which can help to further improve the combustion efficiency, accurately predict the product concentration, and reduce the waste of energy and pollutant generation. Reflecting the fact that the internal conditions of the furnace are more sensitive to the optimization model, it is demonstrated that the applicability and accuracy of the model over the full height range can be further improved through optimization.

Key words: coal gangue, chemical reaction kinetics, optimization simulation, numerical simulation

中图分类号:

TK 229

李丹, 于秀恒, 陈巨辉, 苏潼, ZHURAVKOV Michael, LAPATSIN Siarhel, 姜文锐. 基于化学反应动力学煤矸石燃烧优化模型研究[J]. 化工学报, 2025, 76(12): 6410-6422.

Dan LI, Xiuheng YU, Juhui CHEN, Tong SU, Michael ZHURAVKOV, Siarhel LAPATSIN, Wenrui JIANG. Research on optimization model of gangue combustion based on chemical reaction kinetics[J]. CIESC Journal, 2025, 76(12): 6410-6422.

图/表 14

图1 CFB 三维网格划分

Fig.1 CFB Three-dimensional grid partitioning

图2 计算结果验证

Fig.2 Verification of calculation results

表1 不同温度梯度下煤矸石热解时的活化能

Table 1 Activation energy of coal gangue pyrolysis under different temperature gradients

温度/K	活化能/(kJ/mol)
温度/K	PE1	PE2	PE3	PE4	PE5
800	70.94	71.02	71.87	72.64	73.20
900	78.98	79.10	79.85	80.62	81.23
1000	87.52	87.63	88.20	88.90	89.30
1100	96.30	97.01	97.96	98.60	99.10
1200	107.20	107.90	108.52	109.1	109.96
1300	115.52	116.10	117.22	118.13	119.20

图3 各优化组炉膛中心位置化学反应速率分布

Fig.3 Distribution of chemical reaction rates in the longitudinal section of each optimization group furnace

图4 炉膛中心位置化学反应速率分布

Fig.4 Longitudinal chemical reaction rate distribution

表2 不同温度梯度下煤矸石热解时的频率因子

Table 2 Frequency factors of coal gangue pyrolysis under different temperature gradients

温度/K	频率因子/s^-1
温度/K	PA1	PA2	PA3	PA4	PA5
800	1.00×10⁷	1.00×10⁷	7.13×10⁷	7.93×10⁷	8.30×10⁷
900	1.00×10⁷	1.07×10⁷	8.01×10⁷	8.57×10⁷	9.12×10⁸
1000	1.01×10⁷	1.11×10⁷	2.65×10⁷	1.23×10⁸	9.85×10⁸
1100	1.15×10⁷	3.74×10⁷	6.26×10⁷	1.96×10⁸	7.32×10⁹
1200	2.85×10⁷	9.85×10⁷	1.63×10⁸	7.41×10⁸	8.02×10⁹
1300	9.65×10⁷	1.45×10⁸	7.62×10⁹	2.03×10¹⁰	9.02×10¹⁰

图5 各优化组炉膛中心位置化学反应速率分布

Fig.5 Distribution of chemical reaction rates in the longitudinal section of each optimization group furnace

图6 炉膛中心位置化学反应速率分布

Fig.6 Longitudinal chemical reaction rate distribution

表3 不同温度梯度下煤矸石焦炭反应时的活化能

Table 3 Activation energy of coal gangue coke reaction under different temperature gradients

温度/K	活化能/(kJ/mol)
温度/K	CE1	CE2	CE3	CE4	CE54
800	83.83	84.62	85.20	85.91	86.62
900	84.41	86.32	85.67	86.25	87.83
1000	85.00	85.70	86.80	87.30	88.90
1100	85.63	86.53	87.20	88.10	89.23
1200	86.52	87.63	87.21	87.95	89.65
1300	86.85	87.36	88.52	89.62	90.32

图7 各优化组炉膛中心位置化学反应速率分布

Fig.7 Distribution of chemical reaction rates in the longitudinal section of each optimization group furnace

图8 炉膛中心位置化学反应速率分布

Fig.8 Longitudinal chemical reaction rate distribution

表4 不同温度下煤矸石焦炭反应时的频率因子

Table 4 Frequency factor during gangue coke reaction at different temperatures

温度/K	频率因子/s^-1
温度/K	CA1	CA2	CA3	CA4	CA5
800	—	6.10×10⁶	6.52×10⁶	6.98×10⁶	7.32×10⁷
900	6.19×10⁶	6.62×10⁶	7.02×10⁷	7.42×10⁷	7.95×10⁷
1000	6.59×10⁶	7.00×10⁷	7.53×10⁷	8.01×10⁸	8.54×10⁸
1100	7.13×10⁷	7.62×10⁷	8.06×10⁸	8.63×10⁸	9.12×10⁹
1200	8.00×10⁹	8.51×10⁹	8.95×10⁹	9.42×10⁹	9.95×10⁹
1300	8.52×10⁹	8.95×10⁹	9.51×10⁹	6.55×10⁹	1.35×10¹⁰

图9 各优化组炉膛中心位置化学反应速率分布

Fig.9 Distribution of chemical reaction rates in the longitudinal section of each optimization group furnace

图10 炉膛中心位置化学反应速率分布

Fig.10 Longitudinal chemical reaction rate distribution

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基于化学反应动力学煤矸石燃烧优化模型研究

Research on optimization model of gangue combustion based on chemical reaction kinetics

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