CO2 Gasification of Sugar Cane Bagasse: Quantitative Understanding of Kinetics and Catalytic Roles of Inherent Metallic Species
CO2 Gasification of Sugar Cane Bagasse: Quantitative Understanding of Kinetics and Catalytic Roles of Inherent Metallic Species
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甘蔗渣的 CO2 气化：固有金属物质的动力学和催化作用的定量理解
DOI：
10.1021/acs.energyfuels.7b03147
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发表时间：
2018
期刊：
影响因子：
5.3
通讯作者：
Jun-ichiro Hayashi
中科院分区：
文献类型：
--
作者：
Zayda Faizah Zahara;Shinji Kudo;Daniyanto;U.P.M. Ashik;Koyo Norinaga;Arief Budiman;Jun-ichiro Hayashi
对6组甘蔗渣（原厂、水洗厂和酸洗厂）热解所得的18个焦炭在900℃下进行了co2气化，目的是定量描述固有金属种类催化的气化速率，以及气化过程中催化活性及其变化与金属种类组成的相关性。在0-0.999的焦炭转化率范围内，通过假设催化气化和非催化气化平行进行的模型，以及催化前驱体和具有不同活性和失活特性的三到四种催化剂的存在，定量描述了测量的动力学。通过一系列的回归分析，得出了初始催化活性与碳中Na、K、Ca、Fe和Si浓度的线性关系，相关系数r2为0.98。催化剂前驱体主要由水溶性Na、K和Ca. Si组成，热解过程中催化剂失活，气化过程中不失活。初始催化失活率与初始活性呈线性关系（r2> 0.99），而水洗SCBs形成的炭则不存在这种线性关系。这主要是由于水洗scb形成的焦炭中Fe催化剂的失活速度比原始scb形成的焦炭更快。源自水溶性scb的原始scb的碳中的Na和K与Fe催化剂发生化学相互作用，减缓了其失活。
A total of 18 chars from the pyrolysis of six trios of sugar cane bagasses (SCBs; original, water-washed, and acid-washed) were gasified with CO2at 900 °C, aiming at a quantitative description of the rate of gasification catalyzed by inherent metallic species and a correlation of the catalytic activity and its change during the gasification with the metallic species composition. The measured kinetics was described quantitatively over a range of char conversion, 0–0.999, by a model that assumed progress in parallel of the catalytic gasification and non-catalytic gasification, together with the presence of a catalytic precursor and three to four types of catalysts having different activities and deactivation characteristics. A series of regression analyses was scrutinized and reached expression of initial catalytic activity as a linear function of Na, K, Ca, Fe, and Si concentrations in the char with a correlation factor (r2) of >0.98. The catalyst precursor contributed fully by water-soluble Na, K, and Ca. Si was responsible for the catalyst deactivation during the pyrolysis but not during the gasification. The chars produced from original SCBs followed a linear relationship between the initial catalytic deactivation rate and initial activity (r2> 0.99), while such a linear relationship was not valid for those formed from the water-washed SCBs. This was explained mainly by more rapid deactivation of the Fe catalyst in the chars from water-washed SCBs than that in the chars formed from the original SCBs. Na and K in char from the original SCBs, originating from the water-soluble SCBs, chemically interacted with the Fe catalyst, slowing its deactivation.
印度尼西亚甘蔗渣热电联产作为 CDM 项目的经济潜力
影响因子：
9
作者：
Dewi Restuti;A. Michaelowa
通讯作者：
A. Michaelowa
煤性质对CO2煤焦气化本征反应速率的影响
DOI：
10.3775/jie.64.409
发表时间：
1985
期刊：
Journal of the Fuel Society of Japan
影响因子：
--
作者：
S. Takeda;K. Kitano;J. Kubota;J. Kawabata;Shunzo Sato;J. Shih;T. Chiba
通讯作者：
T. Chiba
总压力对煤焦氢气和蒸汽气化率的影响。
DOI：
10.3775/jie.67.9_764
发表时间：
1988
期刊：
Journal of the Fuel Society of Japan
影响因子：
--
作者：
S. Takeda;S. Honma;Y. Tazaki;M. Yumiyama;K. Kitano;J. Kawabata;T. Chiba;N. Takezawa
通讯作者：
N. Takezawa