Dynamic analysis on methanation reactor using a double-input-multi-output linearized model

doi:10.1016/j.cjche.2014.11.007

›› 2015, Vol. 23 ›› Issue (2): 389-397.DOI: 10.1016/j.cjche.2014.11.007

• 催化、动力学与反应工程 • 上一篇下一篇

Dynamic analysis on methanation reactor using a double-input-multi-output linearized model

Xingxing Li¹, Jiageng Li¹, Bolun Yang¹, Yong Zhang²

1 Department of Chemical Engineering, State Key Laboratory of Multiphase Flow in Power Engineering, Xi'an Jiaotong University, Xi'an 710049, China;
2 Northwest Research Institute of Chemical Industry, Xi'an 710049, China

收稿日期:2013-05-19 修回日期:2013-08-13 出版日期:2015-02-28 发布日期:2015-03-01
通讯作者: Bolun Yang
基金资助:
Supported by the Major Research plan of the National Natural Science Foundation of China (91334101), the National Basic Research Program of China (2009CB219906) and the National Natural Science Foundation of China (21276203).

Dynamic analysis on methanation reactor using a double-input-multi-output linearized model

Xingxing Li¹, Jiageng Li¹, Bolun Yang¹, Yong Zhang²

1 Department of Chemical Engineering, State Key Laboratory of Multiphase Flow in Power Engineering, Xi'an Jiaotong University, Xi'an 710049, China;
2 Northwest Research Institute of Chemical Industry, Xi'an 710049, China

Received:2013-05-19 Revised:2013-08-13 Online:2015-02-28 Published:2015-03-01
Supported by:
Supported by the Major Research plan of the National Natural Science Foundation of China (91334101), the National Basic Research Program of China (2009CB219906) and the National Natural Science Foundation of China (21276203).

摘要/Abstract

摘要： A double-input-multi-output linearized system is developed using the state-space method for dynamic analysis of methanation process of coke oven gas. The stability of reactor alone and reactor with feed-effluent heat exchanger is compared through the dominant poles of the systemtransfer functions.With single or double disturbance of temperature and COconcentration at the reactor inlet, typical dynamic behavior in the reactor, including fast concentration response, slow temperature response and inverse response, is revealed for further understanding of the counteraction and synergy effects caused by simultaneous variation of concentration and temperature. Analysis results showthat the stability of the reactor loop ismore sensitive than that of reactor alone due to the positive heat feedback. Remarkably, with the decrease of heat exchange efficiency, the reactor system may display limit cycle behavior for a pair of complex conjugate poles across the imaginary axis.

关键词: Coke oven gas methanation, Synthetic natural gas, Double-input-multi-output linearized system, Dynamic analysis, Limit cycle behavior

Abstract: A double-input-multi-output linearized system is developed using the state-space method for dynamic analysis of methanation process of coke oven gas. The stability of reactor alone and reactor with feed-effluent heat exchanger is compared through the dominant poles of the systemtransfer functions.With single or double disturbance of temperature and COconcentration at the reactor inlet, typical dynamic behavior in the reactor, including fast concentration response, slow temperature response and inverse response, is revealed for further understanding of the counteraction and synergy effects caused by simultaneous variation of concentration and temperature. Analysis results showthat the stability of the reactor loop ismore sensitive than that of reactor alone due to the positive heat feedback. Remarkably, with the decrease of heat exchange efficiency, the reactor system may display limit cycle behavior for a pair of complex conjugate poles across the imaginary axis.

Key words: Coke oven gas methanation, Synthetic natural gas, Double-input-multi-output linearized system, Dynamic analysis, Limit cycle behavior

Xingxing Li, Jiageng Li, Bolun Yang, Yong Zhang. Dynamic analysis on methanation reactor using a double-input-multi-output linearized model[J]. , 2015, 23(2): 389-397.

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Dynamic analysis on methanation reactor using a double-input-multi-output linearized model

Dynamic analysis on methanation reactor using a double-input-multi-output linearized model

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