| 纸浆黑液和钙混合催化剂进行高变质无烟煤水蒸气气化的研究 |
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| 引用本文： | Gul-e-Rana JAFFRI,张济宇.纸浆黑液和钙混合催化剂进行高变质无烟煤水蒸气气化的研究[J].中国化学工程学报,2008,16(4):575-583. |
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| 作者姓名： | Gul-e-Rana JAFFRI 张济宇 |
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| 作者单位： | Institute of Chemical Engineering and Technology, Fuzhou University, Fuzhou 350002, China |
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| 基金项目： | 国家自然科学基金，福建省科技厅科研项目 |
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| 摘 要： | The catalytic effects of single and mixed catalysts, i.e. single 3%Ca and 5%Na-BL（black liquor） catalysts and mixed 3%Ca＋5%Na-BL catalyst, on carbon conversion, gasification reaction rate constant and activation energy, relative amount of harmful pollutant like sulphur containing gases have been investigated by thermogravimetry in steam gasification under temperature 750℃ to 950℃ at ambient pressure for three high-metarnorphous anthracites （Longyan, Fenghai and Youxia coals in Fujian Province）. The mixed catalyst of 3%Ca＋5%Na-BL increases greatly the carbon conversion and gasification rate constant by accelerating the gasification reaction C＋H2O→CO＋H2 due to presence of alkali surfacecompounds COM], CO2M] and exchanged calcium phenolate and calcium carboxylate （-COO）2. By adding CaCO3 into BL catalyst in gasification, in addition to improving the catalyst function and enhancing the carbon conversion, the effective desulphurization is also achieved, but the better operating temperature should be below 900℃. The homogenous and shrinking core models can be successfully employed to correlate the relations between the conversion and the gasification .time .and to estimate the reaction rate constant, The reaction acUvaUon energy and pre-exponential factor are estimated and the activation energy for mixed catalyst is in a range of 98.72-166.92 kJ·mol^-1, much less than 177.50-196.46 kJ·mol^-1 for non-catalytic steam gasification for three experimental coals.
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| 关 键 词： | mixed catalyst calcium black liquor thermogravimetry steam gasification kinetics sulphur containing gas |
| 收稿时间： | 2007-10-1 |
| 修稿时间： | 2007-10-1
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Investigation on steam gasification of high-metamorphous anthracite using mixed black liquor and calcium catalyst |
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| Gul-e-Rana JAFFRI,ZHANG Jiyu.Investigation on steam gasification of high-metamorphous anthracite using mixed black liquor and calcium catalyst[J].Chinese Journal of Chemical Engineering,2008,16(4):575-583. |
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| Authors: | Gul-e-Rana JAFFRI ZHANG Jiyu |
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| Affiliation: | Institute of Chemical Engineering and Technology, Fuzhou University, Fuzhou 350002, China |
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| Abstract: | The catalytic effects of single and mixed catalysts, i.e. single 3%Ca and 5%Na-BL(black liquor) catalysts and mixed 3%Ca+5%Na-BL catalyst, on carbon conversion,gasification reaction rate constant and activation energy,relative amount of harmful pollutant like sulphur containing gases have been investigated by thermogra-vimetry in steam gasification under temperature 750℃ to 950℃ at ambient pressure for three high-metamorphous anthracites (Longyan, Fenghai and Youxia coals in Fujian Province). The mixed catalyst of 3%Ca+5%Na-BL increases greatly the carbon conversion and gasification rate constant by accelerating the gasification reaction C+H2O→CO+H2 due to presence of alkali surface compounds COM], CO2M] and exchanged calcium phenolate and calcium carboxylate (COO)2. By adding CaCO3 into BL catalyst in gasification, in addition to improving the catalyst function and enhancing the carbon conversion, the effective desulphurization is also achieved, but the better operating temperature should be below 900℃. The homogenous and shrinking core models can be successfully employed to correlate the relations between the conversion and the gasification time and to estimate the reaction rate constant. The reaction activation energy and pre-exponential factor are estimated and the activation energy for mixed catalyst is in a range of 98.72-166.92 kJ·mol-1, much less than 177.50-196.46 kJ·mol-1 for non-catalytic steam gasification for three experimental coals. |
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| Keywords: | mixed catalyst calcium black liquor thermogravimetry steam gasification kinetics sulphur containing gas |
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