固定床生物油气化反应数学模拟.pdf

第42卷第9期
化学工程
Vol, 42 No 9
2014年9月
CHEMICAL ENGINEERING(CHINA)
p.2014
固定床生物油气化反应数学模拟
刘少敏,陈明强2,杨忠连2,张文涛2,栾中义2
(安徽理工大学1.地球与环境学院;2.化工学院,安徽淮南232001)
摘要:生物油气化对提高生物质能利用和保护环境具有重要意义。生物油气化选择乙酸、丙酮、丙三醇、苯酚、糠醛
组成的混合物作为生物油模型物,在固定床圆柱形管式反应器进行气化模拟,用吉布斯自由能最小化法对其水蒸
气催化重整制氢过程进行热力学分析。应用热动力学方程和质量平衡原理推算反应器模型,估算了反应热力学参
数,通过 Aspen Plus中的 Gibs反应器模拟生物油在不同温度下产物的平衡组成,计算出化学平衡体系的摩尔定压
热容,利用 Runge-Kuta法结合 Matlab软件进行求解得出催化剂床层气化转化率;考察了反应温度对平衡时气体产
物的影响。在固定床圆柱形管式反应器进行气化模拟实验,得出不同反应温度时反应产物气体产率和生物油气化
反应较佳反应温度,通过比较得出实验结果与模拟计算值较一致。
关键词:生物油;固定床反应器;反应动力学;数学模型
中图分类号:TK6
文献标识码:A
文章编号:1005-9954(2014)09-009-05
DOI:10.3969/j.issn.10059954.2014.09.015
Mathematic simulation on gasification of bio-oil in fixed bed reactor
LIU Shao-min CHEN Ming-giang YANG Zhong-lian, ZHANG Wen-tao, LUAN Zhong-y
(1. School of Earth Science and Environmental Engineering; 2. School of Chemical Engineering
Anhui University of Science and Technology, Huainan 232001, Anhui Province, China)
Abstract: The gasification of io-oil is impor ant in mproving the utilization of biomass energy and the
environmental protection. The mixtures of acetic acid, glycerol, urfural and phenol were selected as bio-oil model
compounds. The thermodynamic analysis was carried out to understand the steam catalytic reforming hydrogen
production process. Using thermal dynamic equation and mass balance principle to calculate reactor model, the
mathematical model of bio-oil was studied in a fixed bed reactor. Based on Aspen Plus, the R-gibbs reactor was
selected to simulate the product equilibrium compositions of pyrolysis of bio-oil and thereby calculate the molar heat
capacity. A mathematical model was established with the thermodynamic equations and mass balance principle, and
the conversion rate of gasification at the catalyst bed was calculated by combining the Runge-kutta method with the
Matlab software. The effect of reaction temperature on gaseous components of the molecular balance was
investigated. The gasification experiment was performed with bio-oil compounds
I scale tubular fixed b
reactor, obtaining the conversion rate of gasification and the favorable reaction temperature at the catalyst bed. The
experimental results illustrate that the calculation result of the established model agrees well with the experimental
resuts
Key words bio-oil; fixed bed reactor; reaction kinetics; mathematic model
生物油是由生物质快速裂解液化过程产生的有氢/碳比的富氢合成气,通过进一步纯化可获得
机液体混合物(即由生物质3种主要成分,纤维素、氢气2?。
半纤维素和木质素的解聚和裂解反应形成的液
近几年已研究了多种生物油催化气化反应器
体)。生物油可通过气化或催化裂解制取较高催化反应器的设计除了涉及物质传递与混合,反应
收稿日期:2014-0127
基金项目:国家自然科学基金资助项目(21376007);国家科技支撑计划(2014BADO2BO3);安徽省教育斤自然科学基金重点项目
KJ2012A070)
作者简介:刘少敏(1972-),男,博士,副教授,主要从事生物质能源方面的研究,E-mail: shamil(@aust.edu,cno