Simulation of gas-solid fluidized bed reactor for F-T synthesis  

作　　者：CAI Jin LI Tao SUN Qi-wen YING Wei-yong FANG Ding-ye 

机构地区：[1]Engineering Research Center of Large Scale Reactor Engineering and Technology, Ministry of Education, State Key Laboratory of Chemical Engineering, East China University of Science and Technology, Shanghai 200237, China [2]State Key Laboratory of Coal Liquefaction and Coal Chemical Technology, Shanghai 201203, China

出　　处：《Journal of Coal Science & Engineering(China)》2009年第4期420-425,共6页煤炭学报（英文版）

基　　金：Supported by the Doctoral Foundation of China (20050251006)

摘　　要：Using the lumping method, CH_4, C_3H_8, C_10H_22, and C_22H_44 were chosen as themodel products, and CO as the key component. The mathematical model of a gas-solidfluidized bed reactor was established based on some hypotheses. The consumption kinetic model of CO was investigated, and the parameters were estimated by UniversalGlobal Optimization with the Marquardt method. Residual error distribution and a statisticaltest show that the intrinsic kinetic models are reliable and acceptable. A model of carbonchain growth probability was established in terms of experiments. Coupled with the Ander-son- Schulz-Flory (ASF) distribution, the amount of specific product could be obtained.Large- scale cold model experiments were conducted to investigate the distribution of thegas (solid) phase and determine the function of the voidage with the location of the catalytic bed. The change tendencies of the components in the catalytic bed at different temperatures were computed and figured out. The calculated value computed by the modelestablished for the Fe-based F-T synthesis catalyst fit the experimental value very wellunder the same operating conditions, and all the absolute values of the relative deviationsare less than 5%.Using the lumping method, CH4, C3H8, C10H22, and C22H44 were chosen as the model products, and CO as the key component. The mathematical model of a gas-solid fluidized bed reactor was established based on some hypotheses. The consumption kinetic model of CO was investigated, and the parameters were estimated by Universal Global Optimization with the Marquardt method. Residual error distribution and a statistical test show that the intrinsic kinetic models are reliable and acceptable. A model of carbon chain growth probability was established in terms of experiments. Coupled with the An- der-son- Schulz-Flory （ASF） distribution, the amount of specific product could be obtained. Largescale cold model experiments were conducted to investigate the distribution of the gas （solid） phase and determine the function of the voidage with the location of the catalytic bed. The change tendencies of the components in the catalytic bed at different temperatures were computed and figured out. The calculated value computed by the model established for the Fe-based F-T synthesis catalyst fit the experimental value very well under the same operating conditions, and all the absolute values of the relative deviations are less than 5%.

关 键 词：gas-solid fluidized bed F-T synthesis REACTOR LUMPING 

分 类 号：TQ051.13[化学工程] TQ223.121