棉秆炭制备的多目标优化研究

doi:10.3969/j.issn.0253-2417.2017.04.012

林产化学与工业 ›› 2017, Vol. 37 ›› Issue (4): 81-88.doi: 10.3969/j.issn.0253-2417.2017.04.012

棉秆炭制备的多目标优化研究

李勇¹, 李健¹, 刘鹏¹, 闫树军¹, 李庆², 侯书林^1,3

1. 塔里木大学机械电气化工程学院, 新疆阿拉尔 843300;
2. 西安工程大学环境工程与化学学院, 陕西西安 710000;
3. 中国农业大学工学院, 北京 100083

收稿日期:2016-12-01 出版日期:2017-08-25 发布日期:2017-09-02
通讯作者: 闫树军,讲师,从事农业机械装备与资源利用的研究;E-mail:deyuzhijia@163.com E-mail:deyuzhijia@163.com
作者简介:李勇(1986-),男,内蒙古丰镇人,副教授,硕士,主要从事功能材料研究与应用
基金资助:
公益性行业（农业）科研专项（201503135-19）；塔里木大学校长基金项目（TDZKPY201502）；塔里木大学和中国农业大学联合基金（ZNTDLH1504）

Multi-objective Optimization of Preparation of Cotton Stalk-char

LI Yong¹, LI Jian¹, LIU Peng¹, YAN Shujun¹, LI Qing², HOU Shulin^1,3

1. The Mechanical Engineering College, Tarim University, Alar 843300, China;
2. School of Environmental and Chemical Engineering, Xi'an Polytechnic University, Xi'an 710000, China;
3. China Agricultural University College of Engineering, Beijing 100083, China

Received:2016-12-01 Online:2017-08-25 Published:2017-09-02

摘要/Abstract

摘要： 为了开发生物质棉秆炭，研究了棉秆炭化期间热解的失重过程，测试了棉秆炭的力学和能量指标，分析了其变化规律。研究发现：随着炭化温度和时间的增加，棉秆炭的制炭率和能量得率均下降，棉秆炭的剪切强度、压缩强度、热值和相对能量密度均增加，且炭化参数与棉秆炭品质存在二阶非线性的函数关系。利用极小极大法对棉秆炭各品质指标进行多目标优化，得出332℃炭化3 h 47 min时棉秆炭各品质指标最优，实测其制炭率为39.08%，剪切强度为0.61 MPa，压缩强度为2.22 MPa，热值为25.62 MJ，能量密度为153.79%，能量得率为59.97%，与预测值相差不大。

关键词: 棉秆, 炭化, 温度, 时间, 品质指标

Abstract: Cotton stalk-charcoal was produced from cotton stalk by single step carbonization. According to the analysis of pyroysis reaction of cotton staw in the low temperature, moisture and volatile were released from cotton stalk.During the thermal decomposition reaction, conversion rate decreased with the increment of temperature. The mechanics index decreased at first, then increased with the temperature increase. Different cotton stalk charcoal were synthesized at the temperature range of 300-600℃.Cotton stalk were carbonized at the temperature of 300,400,500,and 600℃,and residence time of 60,120,180,240 min,respectively.The effects of temperature and residence time on the conversion rate,shear strength,compressive strength,calorific value,relatively energy density and energy conversion rate from cotton stalk to carbon were investigated.Results showed that cotton stalk-charcoal of conversion rate and energy conversion rate were investigated. It was found that a nonlinear relationship between all kinds of index and its affected factors.Dynamic performance multiple objective optimization of cotton stalk-charcoal indexs was successful based on the min-max method. Under the optimum performance such as 332℃, residence time 3 h 47 min, the conversion rate of cotton stalk charcoal is 39.08%,shear strength is 0.61MPa,compressive strength is 2.22MPa,calorific value is 25.62 MJ,relatively energy density is 153.79%,energy conversion rate is 59.97%.

Key words: cotton stalk, carbonization, temperature, time, quality index

中图分类号:

TQ35
S216

李勇, 李健, 刘鹏, 闫树军, 李庆, 侯书林. 棉秆炭制备的多目标优化研究[J]. 林产化学与工业, 2017, 37(4): 81-88.

LI Yong, LI Jian, LIU Peng, YAN Shujun, LI Qing, HOU Shulin. Multi-objective Optimization of Preparation of Cotton Stalk-char[J]. Chemistry and Industry of Forest Products, 2017, 37(4): 81-88.

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棉秆炭制备的多目标优化研究

Multi-objective Optimization of Preparation of Cotton Stalk-char

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