BGL炉煤气化过程建模和模拟

李英泽; 杨路; 王琦; 杨思宇

doi:10.11949/0438-1157.20190840

您当前的位置：

首页 >

文章列表页 >

BGL炉煤气化过程建模和模拟

过程系统工程 | 更新时间：2020-06-24

- BGL炉煤气化过程建模和模拟
- Modeling and simulation of gasification process in BGL furnace
- 化工学报 2020年71卷第3期页码：1174-1188
- 作者机构：
  
  华南理工大学化学与化工学院，广东广州 510000
- 作者简介：
  
  李英泽(1996—)，男，硕士研究生，ceyingzelee@mail.scut.edu.cn
  杨思宇(1980—)，男，博士，副教授，cesyyang@scut.edu.cn
- 基金信息：
  
  国家自然科学基金重点项目(21736004)
- DOI：10.11949/0438-1157.20190840
  中图分类号： TQ 021.8
- 收稿：2019-07-23，
  
  修回：2019-09-10，
  
  纸质出版：2020-03-05
- 稿件说明：
移动端阅览
李英泽, 杨路, 王琦, 杨思宇. BGL炉煤气化过程建模和模拟[J]. 化工学报, 2020, 71(3): 1174-1188

LI Yingze, YANG Lu, WANG Qi, YANG Siyu. Modeling and simulation of gasification process in BGL furnace[J]. CIESC Journal, 2020, 71(3): 1174-1188
李英泽, 杨路, 王琦, 杨思宇. BGL炉煤气化过程建模和模拟[J]. 化工学报, 2020, 71(3): 1174-1188 DOI： 10.11949/0438-1157.20190840.

LI Yingze, YANG Lu, WANG Qi, YANG Siyu. Modeling and simulation of gasification process in BGL furnace[J]. CIESC Journal, 2020, 71(3): 1174-1188 DOI： 10.11949/0438-1157.20190840.

摘要

建立了BGL气化炉的三维非稳态煤气化模型，模型考虑煤炭颗粒的收缩过程，应用收缩核模型集成煤热解模型、气相湍流模型、气固流动模型、气固异相反应模型、气相均相反应模型、能量守恒方程以及相间传热模型等。该模型充分考虑了气化炉内部三维空间的温度和组成分布，通过煤热解段模型化学计量参数优化，得到CO/H

摩尔比在1.59左右，符合BGL炉热解段运行机制；然后对BGL炉气化段过程进行三维非稳态模拟，模拟出口气组成(CO，H

，CO

，CH

，H

O，O

)与文献结果对比，误差均小于4%。证明了BGL模型的准确性。基于该模型，本文对煤气化过程的主要参数进行影响分析。分析结果表明：煤气化效率随汽氧比的增加而提高，当汽氧比确定在1~1.3之间可以满足工艺要求及生产的需要，适合本文研究所用褐煤的特点；氧煤比增加会降低煤气化效率，但合成气中有效气的含量呈现出先增大后减小的趋势，当氧煤比在0.17左右时有效气含量达到峰值；随着煤粒直径的增加，BGL炉内的温度呈降低趋势，最高温度从2536.77 K降到了2047.81 K；同时，煤粒直径增加会减小CO、H

和CH

的生成量，并增大CO

的生成量。

Abstract

A three-dimensional unsteady coal gasification model of BGL gasifier is established in this paper. The model considers the shrinkage process of coal particles

the coal core pyrolysis model

gas phase turbulence model

gas-solid flow model

gas-solid heterogeneous reaction model

gas phase homogeneous reaction model

energy conservation equation and phase-to-phase heat transfer model. This model fully considers the temperature and composition distribution of the three-dimensional space inside the gasifier. Through the optimization of the stoichiometric parameters of the coal pyrolysis section model

the CO/H

molar ratio is about 1.59

which is consistent with the BGL furnace pyrolysis section operating mechanism; The three-dimensional unsteady simulation of the gasification section of the gasifier is used to simulate the composition of the outlet gas (CO

) compared with the literature results

and the error is less than 4%

which proves the accuracy of the BGL model. Based on this model

we analyze the main parameters of the coal gasification process in this paper. The results show that the coal gasification efficiency increases with the increase of steam-oxygen ratio. When the steam-oxygen ratio is determined to be between 1—1.3

it can meet the process and production requirements

which is suitable for the characteristics of lignite used in this paper; the coal gasification efficiency will decrease with the increase of oxygen-coal ratio

but the content of effective gas in syngas shows a trend of increasing first and then decreasing. When the oxygen-coal ratio is around 0.17

the effective gas content will reach a peak value. With the increase of coal particle diameter

the temperature in BGL furnace decreases

the maximum temperature is dropping from 2536.77 K to 2047.81 K; as for the composition

the increase of coal particle diameter will reduce the production of CO

and CH

and increase the amount of CO

关键词

Keywords

references

王玉忠 . 利用褐煤鲁奇炉与BGL炉碎煤加压气化工艺模拟研究 [J]. 化工管理 , 2018 , 2 ( 2 ): 93 - 100 .

Wang Y Z . Simulation study on pressurized gasification process of lignite with lignite Lurgi furnace and BGL furnace [J]. Chemical Enterprise Management , 2018 , 2 ( 2 ): 93 - 100 .

Anthony D B , Howard J B . Coal devolatilization and hydrogasification [J]. AIChE J ., 1976 , 22 ( 4 ): 625 - 656 .

Howard J B . Chemistry of Coal Utilization: Second Supplementary Volume [M]. New York : John Wiley & Sons Inc , 1981 : 665 .

Smoot L D . Fossil Fuel Combustion: A Source Book [M]. New York : John Wiley & Sons Inc , 1991 : 653 .

傅维标 , 张燕屏 , 韩洪樵 , 等 . 煤热解通用模型(Fu-Zhang模型) [J]. 中国科学( A辑) , 1988 , 12 ( 4 ): 1283 - 1290 .

Fu W B , Zhang Y P , Han H Q , et al . General model of coal particle pyrolysis (Fu-Zhang model) [J]. Sci. China Ser .A, 1988 , 12 ( 4 ): 1283 - 1290 .

王国金 , 李术元 , 王剑秋 , 等 . 煤颗粒脱挥发份的数学模型研究 [J]. 燃料化学学报 , 1996 , 24 ( 2 ): 181 - 185 .

Wang G J , Li S Y , Wang J Q , et al . Study on mathematical model of devolatilization of coal particles [J]. J. Fuel Chem. Techno ., 1996 , 24 ( 2 ): 181 - 185 .

田红 , 蔡九菊 , 王爱华 , 等 . 固定床煤气化过程机理模型综述 [J]. 工业加热 , 2005 , 34 ( 2 ): 1 - 4 .

Tian H , Cai J J , Wang A H , et al . Summarization on mechanism models of fixed bed coal gasification [J]. Ind. Heat ., 2005 , 34 ( 2 ): 1 - 4 .

Yoon H , Wei J , Denn M M , et al . A model for moving-bed coal gasification reactors [J]. AIChE J ., 1978 , 24 ( 5 ): 885 - 903 .

Yoon H , Wei J , Denn M M , et al . Transient behavior of moving bed coal gasification reactors [J]. AIChE J ., 1979 , 25 ( 3 ): 429 - 439 .

Yu W C , Denn M M , Wei J . Radial effects in moving bed coal gasifiers [J]. Chem. Eng. Sci ., 1983 , 38 ( 9 ): 1467 - 1481 .

Desai P , Wen C . Computer modeling of the mere fixed bed gasifier [C]// 3th Conference Report of Morgantown Energy Research Center . Morgantown, WV : U .

S. Department of Energy , 1978 , 101 - 132 .

Desai P . Comparison of processes generating electricity from coal via low BTU gas production [D]. West Virginia University , 1975 : 1 - 25 .

Syamlal M . METC gasifier advanced simulation model [R].

Topical Report for the U . S. Department of Energy . Morgantown , WV: Morgantown Energy Techno. Center , 1921 .

彭伟峰 , 钟伟民 , 程辉 , 等 . 水煤浆气化装置水洗过程的建模与优化 [J]. 计算机与应用化学 , 2011 , 28 ( 12 ): 1515 - 1520 .

Peng W F , Zhong W M , Cheng H , et al . Modeling and optimization of scrubbing process of coal-water slurry gasification plant [J]. Computers and Applied Chemistry , 2011 , 28 ( 12 ): 1515 - 1520 .

郭威 , 钟伟民 . 德士古气化炉气化反应过程的数值模拟与特性分析 [J]. 华东理工大学学报(自然科学版) , 2018 , 44 ( 2 ): 155 - 161 .

Guo W , Zhong W M . Numerical simulation and characteristic analysis of the gasification process for a Texaco gasifier [J]. Journal of East China University of Science and Technology (Nature Science Edition) , 2018 , 44 ( 2 ): 155 - 161 .

李小刚 , 李智 , 钟伟民 , 等 . 不同H/C比煤质对水煤浆气化过程的影响分析 [J]. 计算机与应用化学 , 2016 , 33 ( 1 ): 27 - 32 .

Li X G , Li Z , Zhong W M , et al . Analysis on the effect of coal quality with different H/C ratio on coal-water slurry gasification process [J]. Computers and Applied Chemistry , 2016 , 33 ( 1 ): 27 - 32 .

陈金花 , 孔祥东 , 胡贵华 , 等 . 中心氧配比对GE气化炉内冷态流场分布影响的数值模拟研究 [J]. 计算机与应用化学 , 2015 , 32 ( 1 ): 15 - 19 .

Chen J H , Kong X D , Hu G H , et al . Numerical simulation analysis on the effect of the center oxygen ratio on the GE gasification process [J]. Computers and Applied Chemistry , 2015 , 32 ( 1 ): 15 - 19 .

项友谦 . 固定燃料加压气化过程的分析与模拟 [J]. 煤气与热力 , 1987 , 7 ( 1 ): 3 - 12 .

Xiang Y Q . Analysis and simulation of pressurized gasification process of fixed fuel [J]. Gas & Heat , 1987 , 7 ( 1 ): 3 - 12 .

袁渭康 , 韦潜光 . 移动床煤气化器的一维模型性能研究 [J]. 化工学报 , 1984 , 35 ( 4 ): 320 - 327 .

Yuan W K , Wei Q G . The performance of moving bed coal gasifiers under one-dimensional modeling [J]. Journal of Chemical Industry and Engineering(China) , 1984 , 35 ( 4 ): 320 - 327 .

王光德 , 沙兴中 , 任德庆 . 加压移动床煤气化反应器的数学模型 [J]. 煤气与热力 , 1993 , ( 2 ): 14 - 27 .

Wang G D , Sha X Z , Ren D Q . Pressured moving-bed coal gasification modeling [J]. Gas & Heat , 1993 , ( 2 ): 14 - 27 .

张乙明 , 宋耑 . 两段式发生炉气化过程的模拟计算 [J]. 煤气与热力 , 1989 , ( 2 ): 7 - 15 .

Zhang Y M , Song D . Computer simulation of coal gasification process of two-stage gasifier [J]. Gas & Heat , 1989 , ( 2 ): 7 - 15 .

张健 . 褐煤流化床气化特性与动力学研究 [D]. 北京 : 华北电力大学 , 2017 .

Zhang J . Gasification characteristics and kinetic of lignite in a fluidized bed gasifier [D]. Beijing : North China Electric Power University , 2017 .

陈家仁 . 流化床气化的过去现在与将来 [J]. 洁净煤技术 , 1998 , 4 ( 1 ): 8 - 10 .

Chen J R . The development of fluidized bed coal gasification [J]. Clean Coal Tech ., 1998 , 4 ( 1 ): 8 - 10 .

He C , F X , Chu K H . Process modeling and thermodynamic analysis of Lurgi fixed-bed coal gasifier in an SNG plant [J]. Applied Energy , 2013 , 111 ( 11 ): 742 - 757 .

秦丽娜 , 李建伟 , 周安宁 . 煤热解动力学模型的建立 [J]. 洁净煤技术 , 2013 , 19 ( 1 ): 98 - 102 .

Qin L N , Li J W , Zhou A N . Establishment of dynamics model for coal pyrolysis [J]. Clean Coal Tech ., 2013 , 19 ( 1 ): 98 - 102 .

Launder B E , Spalding D B . Lectures in Mathematical Models of Turbulence [M]. London : Academic Press , 1972 .

Spalding D B . A two-equation model of turbulence [J]. VDI-Forshung-sheft , 1972 , ( 549 ): 5 - 16 .

王福军 . 计算流体动力学分析: CFD软件原理与应用 [M]. 北京 : 清华大学出版社 , 2004 : 120 - 132 .

Wang F J . Computational Fluid Dynamics Analysis: Principles and Applications of CFD Software [M]. Beijing : Tsinghua University Press , 2004 : 120 - 132 .

Jones W P , Launder B E . The calculation of low-Reynolds-number phenomena with a two-equation model of turbulence [J]. Int . J . Heat Mass Transfer , 1973 , 16 ( 6 ): 1119 - 1130 .

Daly B J , Harlow F H . Transport equations in turbulence [J]. Phys. Fluids , 1970 , 13 : 2634 - 2649 .

张夜雨 . 干煤粉加压气化反应实验及模拟研究 [D]. 哈尔滨 : 哈尔滨工业大学 , 2010 .

Zhang Y Y . Experiment and simulation for pulverized coal gasification under pressure [D]. Harbin : Harbin Institute of Technology , 2010 .

董涛 . 粉煤气化炉数值模拟及性能优化分析 [D]. 郑州 : 郑州大学 , 2016 .

Dong T . Numerical simulation and performance optimization of pulverized coal gasifier [D]. Zhengzhou : Zhengzhou University , 2016 .

徐振刚 , 刘国海 , 于涌年 . 煤催化气化反应的收缩核模型 [J]. 化工学报 , 1988 , 39 ( 4 ): 488 - 494 .

Xu Z G , Liu G H , Yu Y N . Shrinking unreacted-core model for catalytic steam gasification of Jiaozuo anthracite [J]. Journal of Chemical Industry and Engineering(China) , 1988 , 39 ( 4 ): 488 - 494 .

吴俣 , 周传波 , 李乾军 . 温度对喷动流化床煤气化影响的数值模拟 [J]. 能源研究与利用 , 2009 , ( 4 ): 21 - 25 .

Wu Y , Zhou C B , Li Q J . Numerical simulation of influence of temperature on coal gasification process in pressurized spouted fluidized bed [J]. Energy Research & Utilization , 2009 , ( 4 ): 21 - 25 .

周山明 , 金保升 . 加压喷动流化床煤部分气化数值模型 [J]. 煤炭转化 , 2000 , 23 ( 2 ): 59 - 66 .

Zhou S M , Jin B S . A numerical model for pressurized fluidized bed coal gasifier [J]. Coal Conversion , 2000 , 23 ( 2 ): 59 - 66 .

邓中乙 , 肖睿 , 金保升 , 等 . 加压喷动流化床煤气化数值模拟 [J]. 燃料科学与技术 , 2009 , 15 ( 4 ): 332 - 338 .

Deng Z Y , Xiao R , Jin B S , et al . Numerical simulation of coal gasification in pressurized spout fluid bed [J]. J. Combust. Sci. Technol ., 2009 , 15 ( 4 ): 332 - 338 .

许宏鹏 . 煤气化过程的数值模拟和热力学第二定律评价 [D]. 武汉 : 华中科技大学 , 2016 .

Xu H P . Computation fluid dynamics and second law of thermodynamics analysis for coal gasification [D]. Wuhan : Huazhong University of Science and Technology , 2016 .

管蕾 . 激冷式气流床粉煤气化炉模拟研究 [D]. 上海 : 华东理工大学 , 2016 .

Guan L . Simulation of quench-cooling entrained-flow pulverized coal gasifier [D]. Shanghai : East China University of Science and Technology , 2016 .

赵冬 , 冯霄 , 王东亮 . 煤制天然气过程模拟与 http://html.publish.founderss.cn/rc-pub/api/common/picture?pictureId=11083458&type=small http://html.publish.founderss.cn/rc-pub/api/common/picture?pictureId=11083458&type=middle 75.98799896 40.47100067 分析 [J]. 化工进展 , 2015 , 34 ( 4 ): 990 - 996 .

Zhao D , Feng X , Wang D L . Simulation and exergy analysis of coal to SNG process [J]. Chem. Ind. & Eng. Pro ., 2015 , 34 ( 4 ): 990 - 996 .

杨小丽 , 于戈文 , 程文伟 , 等 . 干粉煤气化过程的 http://html.publish.founderss.cn/rc-pub/api/common/picture?pictureId=11083458&type=small http://html.publish.founderss.cn/rc-pub/api/common/picture?pictureId=11083458&type=middle 75.98799896 40.47100067 分析及其影响因素研究 [J]. 化学工程 , 2018 , 46 ( 10 ): 63 - 68 .

Yang X L , Yu G W , Chen W W , et al . Exergy analysis of pulverized coal gasification and study on the influence factors [J]. Chemical Engineering(China) , 2018 , 46 ( 10 ): 63 - 68 .

Patrick J W , Walker A , Hanson S . The effect coal particle size on pyrolysis and steam gasification [J]. Fuel , 2002 , 81 ( 5 ): 531 - 537 .

霍威 , 钟思青 . 不同粒径褐煤的热解特性及煤焦结构 [J]. 煤炭转化 , 2017 , 40 ( 1 ): 8 - 12 .

Huo W , Zhong S Q . Pyrolysis characteristic and char structures of lignite with different particle sizes [J]. Coal Conversion , 2017 , 40 ( 1 ): 8 - 12 .

浏览量

下载量

CSCD

文章被引用时，请邮件提醒。

提交

工具集

关联资源

融合物理信息的发酵过程时空图卷积网络模型

基于数据分块策略的双流多采样率GRU软测量建模

基于ESO的动作依赖启发式动态规划控制及其在四级连续搅拌釜系统应用

考虑延迟特性的电厂-碳捕集系统优化调度

融合即时学习的深层扩展VAE软测量建模方法