第18卷第4期 2018年8月
环境与能源
过程工程学报
The Chinese Journal of Process Engincering
VoL.18 No.4 Aug.2018
DOI: 10.12034/j.issn.1009-606X.217376
Analysis on pyrolysis process and physicochemical properties of charfuels deprivedfromcorncobs
Xingwei YANG',Maoli YANG',Hai AN',Haisheng CHENi-2",Shaopeng ZHANG',Zhisong LIANG 1. National Energy Large Scale Physical Energy Storage Technologies Research & Development Center (Bijie), Bijie, Guizhou 551700, China
2. Institute ofEngineering Thermophysics, Chinese Academy of Sciences, Bejing 100190, China
Abstract: The effect of pyrolysis temperature on the physicochemical properties of com cob char fuel as well as the Pyrolysis mechanism were investigated. Moreover, the biochar fuels were characterized by FT-IR, XRD and SEM, thoroughly analyzing the effect of pyrolysis temperature on chemical components, functional groups' distribution and aromatization degree of corm cob chars.The results showed that the fixed carbon and ash contents increased, volatile matter, moisture content and char yield decreased with increasing pyrolysis temperature. Heat value increased firstly and tended to decline later with the increase of temperature. Carbonyl and aliphatic functional groups were gradually destroyed, crystallinity and aromatization degree of chars increased with increasing pyrolysis temperature. The characterization of chars were heat value above 32 MJ/kg, char yield above 24%, fixed carbon above 80% and ash content of chars below 4% corresponding to the pyrolysis temperature of 50oC. Furthermore, chars obtained under 500'C were endowed with developed porous structures, each index parameter was close to or superior to those of
was characterized by reaction order of 1.5 level. When pyrolysis temperature increased from 233~353C to
353~533°C,the apparent activation energy decreased from 68.15kJ/mol to 37.25kJ/mol,correspondingly. Key words: biomass; pyrolysis; heat value; physicochemical properties; dynamics
玉米芯炭质燃料的理化性能及热解过程分析杨兴卫"，杨茂立"，安海"，陈海生12，张少朋，梁志松1
1.国家能源大规模物理储能技术(毕节)研发中心，费州丰节551700 2.中国科学院工程热物理研究所，北京100190
摘要：研究了农业生物质废弃物玉米芯热解产物炭质燃料的理化性能与裂解温度的关系及热解机理，用FT-IR，XRD，SEM对玉米芯炭进行表征，分析了化学组成、官能团分布、芳构化程度与温度的关系。结果表明，随热解温度升高，热解所得焦炭中固定碳和灰分增加，挥发分和水分减小，产率下降，热值先增加后减少，羰基和脂肪族官能团逐渐被破坏，结晶度和芳构化程度不断增强.500℃时，焦炭热值大于32MJ/kg，产率大于24%，固定碳大于80%，灰分小于4%，且具有发达的孔洞结构，各项指标接近或优于市售燃料炭；233~533℃下玉米芯挥发最剧烈，具有1.5级反应的特征：热解温度从233~353℃上升至353~533C
时，表观活化能从68.15kJ/mol降至37.25kJ/mol. 关键词：生物质：热解；热值：理化性能：动力学
中图分类号：TF821
文献标识码：A
文章编号：1009606X(2018)04085107
收稿：20171020,修回：20171225,网络发表：20180427，Reeived: 20171020,Revised: 2017-1225,Published online: 20180427
基金项目：毕节市科技支撑计划项日(编号：毕科合字[2017]14号)：贵州省大规模物理储能工程技术研究中心项目(编号：醇科合平台人才[2017]5308)
贵州省大规模物理结能工程研究中心项目(编号：黔发改高技No[2017]951号)：费州省大规模物理储能工程技术研究中心补助项目(编号：毕科合平台[2017]07号)
作者简介：杨兴卫(1989-)，男，云南省龙陵县人，硕士研究生，助理工程师，治金工程专业，主要从事生物质炭材料领域研究，E-mail:814589260@q9.com:
陈海生，通讯联系人，E-mail:chen_hs@iet.cn.
引用格式：杨兴卫，杨茂立，安海，等，玉米芯炭质燃料的理化性能及热解过程分析。过程工程学报，2018，18(4)：851-857.
and physicochemical properties of char fuels deprived from corm cobs
fangXW,YangM L,AnH,etal.Analysison
pyrolysis
(in Chinese), Chin J. Process Eng., 2018, 18(4): 851857,DOI: 10.12034jsn.1009606X.217376.
万方数据