DYNAMIC OPERATION OF WATER GAS SHIFT REACTION IN Pd/Al2O3 MEMBRANE REACTOR USING IRON OXIDE CATALYST

• Main Author: Natanael, Januar
• Format: Theses
• Language: Indonesia
• Subjects: Teknik kimia
• Online Access: https://digilib.itb.ac.id/gdl/view/33432
• Institution: Institut Teknologi Bandung

ABSTRACT DYNAMIC OPERATION OF WATER GAS SHIFT REACTION IN Pd/Al2O3 MEMBRANE REACTOR USING IRON OXIDE CATALYST By: Januar Natanael 23015006 (Chemical Engineering Master Programme) Pd/Al2O3 membrane reactor is a developing technology to integrate water gas shift reactor and hydrogen separation unit into a single unit. This reactor could increase CO conversion compared to conventional reactor. However, a long period of time lag (around 2.5-3.5 hours) regularly occursduring start-up. Dynamic operation is a promising solution to overcome this problem. The aim of this study is to assess the CO conversion and hydrogen of the reactor when operated under dynamic operation with various switching times. In this study, the performance of conventional reactor and Pd/Al2O3 membrane reactor under steady operation were used as comparisons for the membrane reactor under dynamic operation. 0.8 seconds, 1.2 seconds, and 2.3 seconds were used as space time variation, while CO/H2O in feed were 2 and 3. Dynamic operation in this study was perturbation in feed flow which modulated following square wave pattern with various switching times (15 second, 30 second, and 1 minute). The reactor performance was represented by CO conversion, hydrogen recovery, and time lag. Appropriate dynamic operation could improve the Pd/Al2O3 membrane reactor performance. The result showed that dynamic operation could improve the membrane reactor performanceespecially for the feed with H2O/CO 2 and 1.2 second space time. Switching time is an important factor because if the switching time is too long, it will decrease the membrane reactor performance. Keywords : Pd/Al2O3 membrane, process intensification, water gas shift reaction, dynamic operation, switching time