化学
非线性系统
能量转换效率
体积流量
空间速度
变频调速
机械
调制(音乐)
能量转换
稳态(化学)
巴(单位)
连续流动
控制理论(社会学)
核工程
分析化学(期刊)
催化作用
热力学
物理化学
物理
选择性
计算机科学
气象学
色谱法
声学
控制(管理)
生物化学
量子力学
人工智能
工程类
电气工程
作者
Robert Currie,Daliborka Nikolić,Menka Petkovska,David S. A. Simakov
标识
DOI:10.1002/ijch.201700134
摘要
Abstract Conversion of CO 2 into synthetic CH 4 via thermocatalytic hydrogenation (the Sabatier reaction), has recently gained increasing interest as a possible route for CO 2 utilization and energy storage pathway. Herein, we analyze the possibility of increasing the CO 2 conversion through periodic operation of the reactor. The analysis is performed by using the Nonlinear Frequency Response (NFR) method, a recently developed analytical technique, suitable for fast evaluation of periodic reactor operations. The NFR analysis predicts a significant conversion gain (up to 50 %) for certain frequencies of the feed flow rate modulation. This prediction is validated by numerical simulations with a reaction rate expression obtained by CO 2 conversion experiments using a Ni/Al 2 O 3 catalysts. Both the NFR analysis and numerical simulations predict that it is possible to obtain 70 % CO 2 conversion at 500 K, 5 bar, and average space velocity of 7600 h −1 by a periodic modulation of the feed flow rate, as compared to the corresponding steady state CO 2 conversion of 43 %.
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