|
OALib Journal期刊
ISSN: 2333-9721
费用：99美元
|
|
|
|
微型流化床与热重测定煤焦-co2气化反应动力学的对比研究
, PP. 407-413
Keywords: 微型流化床,热重,半焦气化,反应动力学,等温反应
Abstract:
？对微型流化床反应分析仪(mfbra)和热重分析仪(tga)测定煤焦与co2的等温气化反应动力学进行了比较.在最小化气体扩散影响的条件下,半焦在mfbra中的气化反应速率比tga中大,且在转化率为0.15时有最大值.缩核模型能很好地描述半焦的气化行为.在760~1000℃,半焦气化分两个阶段:在低温段,利用mfbra和tga求取的反应活化能基本相同,验证了mfbra在求取反应动力学数据方面的有效性和可靠性;在高温段,mfbra测定的反应活化能较大,说明其受扩散的抑制作用较小.相同温度下通过mfbra求取的效率因子明显较大,这同其较快的反应速率相一致.上述差异充分说明了反应器类型对测试的(表观)反应动力学有显著影响.
| [1] | 王俊琪,方梦祥,骆仲泱,岑可法.煤在co2气氛中的热解气化动力学研究[j].热力发电,2010,39(5):46-53.(wangjun-qi,fangmeng-xiang,luozhong-yang,cenke-fa.studyonkineticsofcoalpyrolysisandgasificationinco2atmosphere[j].thermalpowergeneration,2010,39(5):46-53.)
|
| [2] | 任海君,张永奇,房倚天,黄戒介,汪洋.褐煤焦中的矿物质对气化反应动力学的影响[j].化工学报,2010,38(10):132-135.(renhai-jun,zhangyong-qi,fangyi-tian,huangjie-jie,wangyang.effectofmineralsinlignitecharonkineticsofsteamgasification[j].journalofchemicalindustryandengineering,2010,38(10):132-135.)
|
| [3] | 周静,周志杰,龚欣,于遵宏.煤焦二氧化碳气化动力学研究:(i)等温热重法[j].煤炭转化,2002,25(4):66-67.(zhoujing,zhouzhi-jie,gongxin,yuzun-hong.studyongasificationcharacteristicstudyofchar-co2gasification:(i)byisothermalthermogravimetry[j].coalconversion,2002,25(4):66-67.)
|
| [4] | 徐春霞,徐振刚,步学朋,戢绪国.煤焦与co2及水蒸气气化特性研究进展.洁净煤技术,2007,13(6):49-52.(xuchun-xia,xuzhen-gang,buxue-peng,jixu-guo.reviewofstudyongasificationcharacteristicofcoalcharwithcarbondioxideandsteam[j].cleancoaltechnology,2007,13(6):49-52.)
|
| [5] | 李延吉,李润东,冯磊,杨天华,魏砾宏.典型城市固体废物co2气化动力学研[j].热力发电,2008,37(10):14-18.(liyan-ji,lirun-dong,fenglei,yangtian-hua,weili-hong.studyonco2gasification-kineticsoftypicalmunicipalsolidwastes[j].thermalpowergeneration,2008,37(10):14-18.)
|
| [6] | 周志杰,范晓雷,张薇,王辅臣,于遵宏.非等温热重分析研究煤焦气化动力学.煤炭学报,2006,31(2):219-222.(zhouzhi-jie,fanxiao-lei,zhangwei,wangfu-chen,yuzun-hong.chargasificationkineticsusingnon-isothermaltga[j].journalofchinacoalsociety,2006,31(2):219-222.)
|
| [7] | 余剑,朱剑虹,岳君容,孙立鑫,刘新华,许光文.微型流化床反应动力学分析仪的研制与应用[j].化工学报,2009,60:2669-2674.(yujian,zhujian-hong,yuejun-rong,sunli-xin,liuxin-hua,xuguang-wen.developmentandapplicationofmicrokineticanalyzerforfluidizedbedgas-solidreactions[j].journalofchemicalindustryandengineering,2009,60:2669-2674.)
|
| [8] | 刘新华,许光文,高士秋.气固反应动力学参数分析仪:中国,200610171515.3.2006-12-30.(liuxin-hua,xuguang-wen,gaoshi-qiu.parameteranalyzerofgas-solidreactionkinetics:cn,200610171515.3.2006-12-30.)
|
| [9] | yuj,yuej,liuz,dongl,xug,zhuj,duanz,sunl.kineticsandmechanismofsolidreactionsinamicrofluidizedbedreactor[j].aichej,2010,56(11):2905-2912.
|
| [10] | zengx,yinw,jiany,shisw,meiz,sahopx,guangwx.coalpyrolysisinafluidizedbedforadaptingtoatwo-stagegasificationprocess[j].energyfuels,2011,25(3):1092-1098.
|
| [11] | 余剑,李强,段正康,朱剑虹,岳君容,李奡明,许光文.微型流化床中的等温微分反应特性[j].中国科学,2011,41(1):152-160.(yujian,liqiang,duanzheng-kang,zhujian-hong,yuejun-rong,liao-ming,xuguang-wen.isothermaldifferentialcharacteristicsofthereactioninmicrofluidizedbed[j].sciencechinapress,2011,41(1):152-160.
|
| [12] | 余剑,朱剑虹,郭凤,段正康,刘云义,许光文.生物质在微型流化床中热解动力学与机理[j].燃料化学学报,2010,38(6):666-672.(yujian,zhujian-hong,guofeng,duanzheng-kang,liuyun-yi,xuguang-wen.reactionkineticsandmechanismofbiomasspyrolysisinamicrofluidizedbedreactor[j].journaloffuelchemistryandtechnology,2010,38(6):666-672.)
|
| [13] | gómez-bareaa,ollerop,lecknerb.masstransporteffectsduringmeasurementsofgas-solidreactionkinecitsinafluidizedbed[j].chemengsci,2007,62(5):1477-1493.
|
| [14] | 向银花,王洋,张建民,黄戒介,赵建涛.煤气化动力学模型研究[j].燃料化学学报,2010,30(1):21-26.(xiangyin-hua,wangyang,zhangjian-rain,huangjie-jie,zhaojian-tao.astudyonkineticmodelsofchargasification[j].journaloffuelchemistryandtechnology,2010,30(1):21-26.)
|
| [15] | sadhukhanak,guptap,sahark.analysisofthedynamicsofcoalcharcombustionwithignitionandextinctionphenomena:shrinkingcoremodel[j].intjchemkinet,2008,40(9):569-582.
|
| [16] | ishidam,wency.comparisonofkineticanddiffusionalmodelsforsolid-gasreaction[j].aichej,1968,14(2):311-316.
|
Full-Text
|
|
Contact Us
service@oalib.com QQ:3279437679 
WhatsApp +8615387084133
|
|
