气流床煤气化条件下煤(焦)气化反应性评价
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摘要
为了寻求适用于气流床煤气化条件的气化反应性评价方法,利用自行设计的接近现代煤气化环境的气化装置提出了一个评价煤(焦)的气化反应性的指数H_(PO),通过1组典型的煤(焦)样品在该装置上的气化试验数据对比,验证H_(PO)对煤(焦)气化反应性的表征效果。结果表明:利用气化后CO_2浓度或CO_2还原率α不能准确评价煤(焦)的气化反应性,而H_(PO)值可以避免可气化组分含量的干扰,在接近现代煤气化工艺条件下快速并较为准确地评价煤(焦)的气化反应性。
In order to establish a method for evaluating gasification reactivity suitable for entrained flow gasification,an index,H_(PO) ,is proposed with the aid of a gasification apparatus similar to the modern coal gasification process.The validity of H_(PO) on the gasification reactivity of coal/char was verified according to the gasification experimental data of the typical coal/char samples.The results show that the CO_2 concentration after gasification or/and CO_2 reduction ratio are not capable of evaluating the gasification activity of coal/char accurately;whereas the H_(PO) can avoid interference from gasifiable components and quickly and accurately assess the coal/char's gasification reactivity under entrained flow condition.
In order to establish a method for evaluating gasification reactivity suitable for entrained flow gasification,an index,H_(PO) ,is proposed with the aid of a gasification apparatus similar to the modern coal gasification process.The validity of H_(PO) on the gasification reactivity of coal/char was verified according to the gasification experimental data of the typical coal/char samples.The results show that the CO_2 concentration after gasification or/and CO_2 reduction ratio are not capable of evaluating the gasification activity of coal/char accurately;whereas the H_(PO) can avoid interference from gasifiable components and quickly and accurately assess the coal/char's gasification reactivity under entrained flow condition.
引文
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[11]钱卫,解强,杨晓光,等.热解条件对气化水焦浆用半焦性质的影响[J].中国煤炭,2012,38(7):72-76.QIAN Wei,XIE Qiang,YANG Xiaoguang,et al.Effect of pyrolysis parameters on characteristics of derived semi-coke used for water coke slurry for gasification[J].China Coal,2012,38(7):72-76.
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[13]黄于益,钱卫,何璐,等.煤(焦)气化活性指数HCG的解析与应用[J].中国矿业大学学报,2015,44(1):151-155.HUANG Yuyi,QIAN Wei,HE Lu,et al.Coal/char gasification reactivity index HCGand its application[J].Journal of China University of Mining&Technology,2015,44(1):151-155.
[14]冯钰.煤热解半焦气化反应活性和燃烧特性研究[D].大连:大连理工大学,2016:22-33.
[15]朱银惠.煤化学[M].北京:化学工业出版社,2011:185-192.
[2]谢克昌,赵炜.煤化工概论[M].北京:化学工业出版社,2012:141-155.
[3]钱卫,孙凯蒂,解强,等.低阶烟煤热解特征指数的解析与应用[J].中国矿业大学学报,2012,41(2):256-261.QIAN Wei,SUN Kaidi,XIE Qiang,et al.Study of resolution capability of pyrolysis characteristic index of low-rank bituminous coal[J].Journal of China University of Mining&Technology,2012,41(2):256-261.
[4]GB/T 220—2001,煤对二氧化碳化学反应性的测定方法[S].
[5]夏毅.煤质结构及气化活性研究[D].贵阳:贵州大学,2015:51-53.
[6]BASIL BEAMISH B,KAREN J Shaw,RODGERS K A,et al.Thermogravimetric determination of the carbon dioxide reactivity of char from some New Zealand coals and its association with the inorganic geochemistry of the parent coal[J].Fuel Processing Technology,1998,53(3):243-253.
[7]YE D P,AGNEW J B and ZHANG D K.Gasification of a South Australian low-rank coal with carbon dioxide and steam:Kinetics and reactivity studies[J].Fuel,1998,77(11):1209-1219.
[8]WU Youqing,WU Shiyong,GU Jing,et al.Differences in physical properties and CO2gasification reactivity between coal char and petroleum coke[J].Process Safety and Environmental Protection,2009,87(5):323-330.
[9]顾菁,吴诗勇,张晓,等.高温下兖州煤焦/CO2气化反应性[J].煤炭转化,2007,30(4):34-37.GU Jing,WU Shiyong,ZHANG Xiao,et al.CO2gasification reactivity of Yanzhou coal chars at elevated temperatures[J].Coal Conversion,2007,30(4):34-37.
[10]顾菁,李莉,吴诗勇,等.程序升温热重法研究神府高温煤焦-CO2气化反应性[J].华东理工大学学报(自然科学版),2007,33(3):354-358.GU Jing,LI Li,WU Shiyong,et al.Measurement of CO2gasification reactivity for high temperature pyrolyzed coal chars by temperature-programmed thermogravimetry[J].Journal of East China University of Science and Technology(Natural Science Edition),2007,33(3):354-358.
[11]钱卫,解强,杨晓光,等.热解条件对气化水焦浆用半焦性质的影响[J].中国煤炭,2012,38(7):72-76.QIAN Wei,XIE Qiang,YANG Xiaoguang,et al.Effect of pyrolysis parameters on characteristics of derived semi-coke used for water coke slurry for gasification[J].China Coal,2012,38(7):72-76.
[12]钱卫.低阶烟煤中低温热解及热解产物研究[D].北京:中国矿业大学(北京),2012:52-60.
[13]黄于益,钱卫,何璐,等.煤(焦)气化活性指数HCG的解析与应用[J].中国矿业大学学报,2015,44(1):151-155.HUANG Yuyi,QIAN Wei,HE Lu,et al.Coal/char gasification reactivity index HCGand its application[J].Journal of China University of Mining&Technology,2015,44(1):151-155.
[14]冯钰.煤热解半焦气化反应活性和燃烧特性研究[D].大连:大连理工大学,2016:22-33.
[15]朱银惠.煤化学[M].北京:化学工业出版社,2011:185-192.