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学者姓名：张济宇
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Abstract ：
With sodium carbonate and sodium dodecyl benzene sulfonate used as the catalysts respectively, the steam gasification kinetic experiments of Fujian Jianxin and Chuanghong anthracites were conducted in an atmospheric thermal balance, and the effects of catalyst loading amount (0%~15%) and gasification temperature (850~950 ) were examined. The experimental data were fitted by shrinking core model. Meanwhile, the kinetic parameters were obtained. The results show that both sodium carbonate and sodium dodecyl benzene sulfonate can significantly increase the gasification rate and reduce the activation energy of gasification reaction of the two anthracite samples. Because the loading process of catalyst LAS can make the sodium ions being dispersed more evenly, even with low concentration of Na+, the carbon conversion can be improved significantly and the gasification reaction time is reduced too. The experiments prove that it is a new way for the application and development of LAS in catalytic steam gasification of Fujian anthracite. ©, 2014, Science Press. All right reserved.
Keyword ：
Activation energy Activation energy Anthracite Anthracite Benzene Benzene Catalysts Catalysts Gasification Gasification Metal ions Metal ions Sodium Carbonate Sodium Carbonate Sodium compounds Sodium compounds
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| GB/T 7714 | Chen, Yan , Zhang, Ji-Yu , Feng, Yun-Fei . Effects of dispersion of sodium ions on catalytic Fujian anthracite gasification [J]. | Journal of Fuel Chemistry and Technology , 2014 , 42 (11) : 1302-1308 . |
| MLA | Chen, Yan 等. "Effects of dispersion of sodium ions on catalytic Fujian anthracite gasification" . | Journal of Fuel Chemistry and Technology 42 . 11 (2014) : 1302-1308 . |
| APA | Chen, Yan , Zhang, Ji-Yu , Feng, Yun-Fei . Effects of dispersion of sodium ions on catalytic Fujian anthracite gasification . | Journal of Fuel Chemistry and Technology , 2014 , 42 (11) , 1302-1308 . |
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Abstract ：
分别以Na2 CO3和十二烷基苯磺酸钠（ LAS）为催化剂，利用常压热分析天平对福建省建欣和创宏两种无烟煤进行了水蒸气气化动力学实验。在850～950℃测定了催化剂加载量为0～15％（质量分数）时转化率随气化反应时间的变化。进而采用缩核模型对实验数据拟合，给出相应的动力学参数，实验结果表明，Na2 CO3和LAS催化剂对提高气化速率及降低反应活化能具有明显作用。由于LAS催化剂的加载过程可使钠离子实现更充分和均匀的分散，即使在很小的Na＋基准浓度状态下，也可实现催化气化的高效转化与缩短气化反应时间的目的，这为LAS催化剂的应用与开发提供了新的方向。
Keyword ：
催化气化 催化气化 十二烷基苯磺酸钠 十二烷基苯磺酸钠 无烟煤 无烟煤
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| GB/T 7714 | 陈彦 , 张济宇 , 冯云飞 . 钠离子分散度对福建高变质无烟煤催化气化特性的影响 [J]. | 燃料化学学报 , 2014 , (11) : 1302-1308 . |
| MLA | 陈彦 等. "钠离子分散度对福建高变质无烟煤催化气化特性的影响" . | 燃料化学学报 11 (2014) : 1302-1308 . |
| APA | 陈彦 , 张济宇 , 冯云飞 . 钠离子分散度对福建高变质无烟煤催化气化特性的影响 . | 燃料化学学报 , 2014 , (11) , 1302-1308 . |
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基于福建建欣无烟煤添加不同量Na2CO3时热天平850℃的水蒸气气化实验,考察了热解气化进程中Na2CO3的自身分解及与碳反应的失重变化。比表面分析仪测定了不同转化率煤样的吸脱等温线的演变规律,在低Na2CO3含量及低转化率时呈现为一端封闭的窄狭缝型微孔结构为主的微孔吸附Ⅰ型特征,高Na2CO3含量及高转化率时转变为有两端开口的开放性中孔和大孔吸附的Ⅱ型特征,超过12%Na2CO3饱和度时显示出裂隙孔和墨水瓶孔表面的H4型回线特征。BET及T-plot模型计算表征了不同量Na2CO3及不同转化率时的比表面积及孔径分布特性,所有比表面积均呈现随转化深度先增后减的变化,Na2CO3催化剂的加入及分...
Keyword ：
催化剂装载饱和度 催化剂装载饱和度 吸脱等温线 吸脱等温线 水蒸气催化气化 水蒸气催化气化 煤比表面积 煤比表面积 转化率 转化率
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| GB/T 7714 | 陈彦 , 张济宇 . 福建无烟煤Na_2CO_3催化气化过程的比表面变化特性 [J]. | 化工学报 , 2012 , 63 (08) : 2443-2452 . |
| MLA | 陈彦 等. "福建无烟煤Na_2CO_3催化气化过程的比表面变化特性" . | 化工学报 63 . 08 (2012) : 2443-2452 . |
| APA | 陈彦 , 张济宇 . 福建无烟煤Na_2CO_3催化气化过程的比表面变化特性 . | 化工学报 , 2012 , 63 (08) , 2443-2452 . |
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Using sodium carbonates as a catalyst, the steam gasification kinetics of Jianxin high metamorphosed anthracite was studied by isothermal thermo-gravimetric analysis under ambient pressure in this paper. The reaction activity of anthracite loaded with different sodium carbonate concentrations(0-18%) was investigated within the temperature range from 800-950°C.The loading saturation level of the sodium carbonate in catalysts under experimental conditions was determined. The catalytic steam gasification reaction could be well fitted by the shrinking-core model and the kinetic parameters were determined. Results show that sodium carbonate remarkably reduces the activation energy of gasification reaction. It is exhibited that compensation effect exists clearly in catalytic gasification kinetics in the kinetic analysis. The compensation effect is expressed by ln, A0=8.66×10-5 E-0.282, 7, and the isokinetic temperature is 1389 K.
Keyword ：
Activation energy Activation energy Anthracite Anthracite Carbonation Carbonation Catalysts Catalysts Gasification Gasification Gravimetric analysis Gravimetric analysis Kinetics Kinetics Sodium Carbonate Sodium Carbonate Sodium compounds Sodium compounds Thermogravimetric analysis Thermogravimetric analysis
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| GB/T 7714 | Yu, Run-Guo , Chen, Yan , Lin, Cheng et al. Catalytic gasification kinetics and compensation effect of high metamorphosed anthracite [J]. | Journal of Combustion Science and Technology , 2012 , 18 (1) : 85-89 . |
| MLA | Yu, Run-Guo et al. "Catalytic gasification kinetics and compensation effect of high metamorphosed anthracite" . | Journal of Combustion Science and Technology 18 . 1 (2012) : 85-89 . |
| APA | Yu, Run-Guo , Chen, Yan , Lin, Cheng , Zhang, Ji-Yu . Catalytic gasification kinetics and compensation effect of high metamorphosed anthracite . | Journal of Combustion Science and Technology , 2012 , 18 (1) , 85-89 . |
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Abstract ：
Based on the steam gasification experiments of 'Fujian Jianxin' anthracite with different catalyst loadings of Na2CO3 in the thermal balance at 850°C, decomposition of Na2CO3 itself and mass loss arising from the reaction of Na2CO3 with carbon in coal were examined. Also, the change of adsorption-desorption isotherms of coal samples at different conversions were measured with the specific surface area analyzer. Type I adsorption-desorption of a narrow slit micropore configuration with a close end was mainly shown at a lower Na2CO3 loading and lower conversions, while type II adsorption-desorption of open mesopores and macropores with two-end opening holes was formed at a higher Na2CO3 loading and higher conversions. H4-type hysteresis loop with slit and ink-bottle pore surface appeared at and beyond the catalyst saturation loading of 12% Na2CO3. The specific surface area and pore-size distribution at different Na2CO3 loadings and conversions were calculated using BET equation and T-plot model. These calculation indicated that all of specific surface area appeared to be increasing at first then decreasing with increasing conversion extent of coal. The split and crosslinking of more micropores and the reduction of micropore specific surface area were the result of the increase of active sites of carbon and gasification rate due to the loading and dispersing of Na2CO3 catalyst. The change of specific surface area with increasing at first then decreasing became more smooth with more loading of Na2CO3. At the catalyst saturation loading of 12% Na2CO3, the sufficient filling and uniform dispersion of catalyst led to increase of active sites on micro-crystalline structure surface of more inert carbon and the split and crosslinking expansion of more micropores in the gasification process. However, at the termination gasification reaction with deep conversion, all of specific surface area were close to zero, clearly showing maximum conversion of coal and uniform gasification at catalyst saturation loading. © 2012 All Rights Reserved.
Keyword ：
Adsorption Adsorption Adsorption isotherms Adsorption isotherms Anthracite Anthracite Bottles Bottles Carbon Carbon Catalyst activity Catalyst activity Desorption Desorption Gasification Gasification Microporosity Microporosity Pore size Pore size Ship conversion Ship conversion Sodium Carbonate Sodium Carbonate Sodium compounds Sodium compounds Specific surface area Specific surface area
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| GB/T 7714 | Chen, Yan , Zhang, Jiyu . Variation of specific surface area in catalytic gasification process of Fujian anthracite with Na2CO3 catalyst [J]. | CIESC Journal , 2012 , 63 (8) : 2443-2452 . |
| MLA | Chen, Yan et al. "Variation of specific surface area in catalytic gasification process of Fujian anthracite with Na2CO3 catalyst" . | CIESC Journal 63 . 8 (2012) : 2443-2452 . |
| APA | Chen, Yan , Zhang, Jiyu . Variation of specific surface area in catalytic gasification process of Fujian anthracite with Na2CO3 catalyst . | CIESC Journal , 2012 , 63 (8) , 2443-2452 . |
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The steam gasification kinetics of Chuanghong anthracite by using sodium dodecyl-benzenesulfonate and sodium citrate as catalysts was investigated in an isothermal thermo-gravimetric analyzer under ambient pressure. The relationships between coal conversion and reaction time at different catalyst concentrations (0-15%) was studied within the temperature range of 850-950°C. The catalytic steam gasification reaction was well fitted by the shrinking-core model and the kinetic parameters were obtained. The research results showed that both catalysts can greatly improve gasification rate and remarkably reduce the activation energy of gasification reaction. Sodium dodecylbenzenesulfonate has the same catalytic effect as sodium carbonate and better catalytic effect than sodium citrate on gasification rate, so it is a good catalyst for catalytic gisification of anthracite.
Keyword ：
Activation energy Activation energy Anthracite Anthracite Catalysts Catalysts Gasification Gasification Kinetics Kinetics Sodium Carbonate Sodium Carbonate Sodium compounds Sodium compounds Thermogravimetric analysis Thermogravimetric analysis
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| GB/T 7714 | Jiang, You-Hua , Chen, Yan , Lin, Cheng et al. Kinetics of catalytic gasification of anthracite by using organic sodium as catalysts [J]. | Journal of Combustion Science and Technology , 2012 , 18 (6) : 539-544 . |
| MLA | Jiang, You-Hua et al. "Kinetics of catalytic gasification of anthracite by using organic sodium as catalysts" . | Journal of Combustion Science and Technology 18 . 6 (2012) : 539-544 . |
| APA | Jiang, You-Hua , Chen, Yan , Lin, Cheng , Zhang, Ji-Yu . Kinetics of catalytic gasification of anthracite by using organic sodium as catalysts . | Journal of Combustion Science and Technology , 2012 , 18 (6) , 539-544 . |
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The catalytic effect of different catalysts, i.e., 3% Ca, 5% Na–BL, and 3% Ca+5% Na–BL catalysts, on relative amount of harmful sulfur-containing gasses have been investigated qualitatively by thermogravimetry in steam gasification under temperature of 700–900°C at ambient pressure for two Pakistani Lakhra and Thar lignite chars. The hazardous pollutants such as SO2and H2S produced by char and black liquor (BL) itself in steam gasification are captured by the existence of Ca mixed with BL to form CaSO3and CaS on char matrix and successfully assist in the completion of the desulfurization process, but this action is more effective at temperatures less than 900ºC. © 2012 Springer-Verlag/Wien.
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| GB/T 7714 | Jaffri, G.R. , Zhang, J.-Y. . Catalytic effect of BL and BL+Ca mixed catalyst on sulfur-containing gasses of Pakistani lignite chars [M] //[Jaffri, G.R., Zhang, J.-Y.] 编 Springer-Verlag Vienna . |
| MLA | Jaffri, G.R. et al. "Catalytic effect of BL and BL+Ca mixed catalyst on sulfur-containing gasses of Pakistani lignite chars" [Jaffri, G.R., Zhang, J.-Y.] 编 Springer-Verlag Vienna . |
| APA | Jaffri, G.R. , Zhang, J.-Y. . Catalytic effect of BL and BL+Ca mixed catalyst on sulfur-containing gasses of Pakistani lignite chars [Jaffri, G.R., Zhang, J.-Y.] 编 Springer-Verlag Vienna . |
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以十二烷基苯磺酸钠和柠檬酸三钠为催化剂,利用常压热分析仪对福建省创宏无烟煤进行了水蒸气气化动力学实验.在850~950,℃下测定了催化剂加载量为0~15%时,转化率随气化时间的变化;并采用缩核模型对实验数据进行拟合,给出相应的动力学参数.结果表明,十二烷基苯磺酸钠和柠檬酸三钠均能明显提高反应的气化速率,降低气化反应活化能;表面活性剂十二烷基苯磺酸钠的催化效果优于络合剂柠檬酸三钠,且与碳酸钠催化效果相当,是一种良好的煤催化气化催化剂.
Keyword ：
催化气化 催化气化 十二烷基苯磺酸钠 十二烷基苯磺酸钠 无烟煤 无烟煤 柠檬酸三钠 柠檬酸三钠
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| GB/T 7714 | 蒋友华 , 陈彦 , 林诚 et al. 有机钠催化剂对无烟煤的催化气化动力学 [J]. | 燃烧科学与技术 , 2012 , (6) : 539-544 . |
| MLA | 蒋友华 et al. "有机钠催化剂对无烟煤的催化气化动力学" . | 燃烧科学与技术 6 (2012) : 539-544 . |
| APA | 蒋友华 , 陈彦 , 林诚 , 张济宇 . 有机钠催化剂对无烟煤的催化气化动力学 . | 燃烧科学与技术 , 2012 , (6) , 539-544 . |
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以碳酸钠为催化剂,利用热天平研究了福建建欣高变质无烟煤常压下水蒸气气化反应动力学,在800～ 950℃测定了碳酸钠加载量从0～18％时该无烟煤气化反应特性,确定了实验条件下碳酸钠催化剂加载饱和浓度,结果表明,加载催化剂后建欣无烟煤气化反应活化能大幅降低.得到了建欣无烟煤与水蒸气气化反应动力学缩芯模型,并给出相应的动力学参数.分析表明,该催化气化反应体系活化能E与频率因子A0之间存在动力学补偿效应,得出其补偿效应方程为(I)n A0=8.66×10-5E- 0.2827,等动力学温度为1 389 K.
Keyword ：
催化气化 催化气化 无烟煤 无烟煤 碳酸钠 碳酸钠 补偿效应 补偿效应
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| GB/T 7714 | 余润国 , 陈彦 , 林诚 et al. 高变质无烟煤催化气化动力学及补偿效应 [J]. | 燃烧科学与技术 , 2012 , 18 (1) : 85-89 . |
| MLA | 余润国 et al. "高变质无烟煤催化气化动力学及补偿效应" . | 燃烧科学与技术 18 . 1 (2012) : 85-89 . |
| APA | 余润国 , 陈彦 , 林诚 , 张济宇 . 高变质无烟煤催化气化动力学及补偿效应 . | 燃烧科学与技术 , 2012 , 18 (1) , 85-89 . |
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针对石雕复杂型面的切割与磨削加工,提出五轴联动控制算法。通过分片切割石雕型面,利用切面外廓曲线的型值点进行椭圆拟合,得出雕像的椭圆曲线集合,建立了磨削切片与石雕工件相对位置的五轴联动控制模型。该模型适合于国产QSJ改进型桥式石材磨削切机的五轴联动控制加工,实现了磨削切片的空间运动轨迹的插补进给,能较精确地包络出石雕型面上的椭圆曲线。仿真与实际加工测试证明,该控制算法模型能实现石雕复杂型面的自动化磨切加工控制,具有明显的高精度、高效率、高重复性。
Keyword ：
五轴联动 五轴联动 型面磨削 型面磨削 控制算法 控制算法 石雕 石雕 计算机数控 计算机数控
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| GB/T 7714 | 陈为旭 , 张济宇 . 石雕形廓五轴联动磨削控制算法研究 [J]. | 中国机械工程 , 2011 , 22 (12) : 1406-1413 . |
| MLA | 陈为旭 et al. "石雕形廓五轴联动磨削控制算法研究" . | 中国机械工程 22 . 12 (2011) : 1406-1413 . |
| APA | 陈为旭 , 张济宇 . 石雕形廓五轴联动磨削控制算法研究 . | 中国机械工程 , 2011 , 22 (12) , 1406-1413 . |
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