Integrated Reactor‐Combustor Recycling System for Safe Operation by Catalytic Removal of Excess O2. Issue 4 (24th February 2021)

• Record Type: Journal Article
• Authors: Lu, Mengke; Zeng, Tao; Zhou, Xinggui; Westermann, Thomas; Mleczko, Leslaw
• Is Part Of: Chemical engineering & technology. Volume 44:Issue 4(2021)
• Page Start: 670
• Page End: 680
• Publication Date: 2021-02-24
• Subjects: Hydrocarbon‐rich reactors -- Microstructured reactors -- O2‐rich reactors -- Pt/Al2O3 catalysts -- Reactor‐combustor recycling systems; Chemical engineering -- Periodicals; Chemical processes -- Periodicals; 660.05
• DOI: 10.1002/ceat.202000567
• Languages: English
• ISSNs: 0930-7516

Abstract

Abstract: A reactor‐combustor recycling system is proposed for safe operation of a hydrocarbon‐ and O2 ‐rich reactor by catalytically combusting excess O2 and recycling generated CO2 for dilution. The Pt/Al2 O3 catalysts are determined as active and stable, and the Mars van Krevelen mechanism is applied for the combustion kinetics. Modeling and simulation of the system involving reactor, heater, combustor, valve, and cooler are performed, where multitubular, monolith, and microstructured reactors are compared for addressing the strong exothermic combustion. The system is highly promising because 99.9 % O2 can be consumed and explosion risk be eliminated via CO2 dilution. The microstructured combustor exhibits the highest potential by considering heat management, pressure drop, and compactness. Abstract : A batch reactor‐combustor recycling system is suggested for safe and sustainable synthesis of active ingredients in a batch reactor by removing excess O2 with catalytic oxidation, followed by recycling‐generated CO2 for dilution. About 99.9 % O2 could be consumed in the combustor and a certain amount of CO2 could be recycled to eliminate the explosion risk in the batch reactor.