Results 101 to 110 of about 129 (122)
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Characterisation of mesoscale oscillatory helical baffled reactor—Experimental approach
Chemical Engineering Journal, 2012Abstract A novel mesoscale helical baffled design of oscillatory baffled reactor (OBR) has been constructed and characterised in the net flow laminar regime net flow Reynolds numbers (Re n ) (net flow Reynolds numbers Re n ≤ 10). A high degree of plug flow can be achieved in this design of OBR.
Phan AN, Harvey AP
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Potential uses of oscillatory baffled reactors for biofuel production
Biofuels, 2010The oscillatory baffled reactor (OBR) is a unique design of plug flow reactor consisting of a tube or column fitted with a series of baffle plates. The key feature of OBRs is the combination of a periodic geometry (usually sharp-edged baffles) and a periodically reversing flow in a tube or column.
Harvey AP, Masngut N, Ikwebe J
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Characterization of micromixing in a Continuous Oscillatory Baffled Reactor
2018Micromixing is the limiting step in the progress of fast reactions and fast crystallization processes. Micromixing performance of a Nitech© glass COBR has been characterized using the competing parallel iodide-iodate test reactions. Macromixing length was also qualitatively determined by visualization of a tracer.
Avila, M. +4 more
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Reactive Crystallization of Paracetamol in a Continuous Oscillatory Baffled Reactor
Organic Process Research & Development, 2019In this article, we report, for the first time, a reactive seeded cooling crystallization of paracetamol successfully performed in a continuous oscillatory baffled reactor (COBR). The synthesis of acetaminophen took place in the first part of the COBR and generated the solvent for crystallization via a specific ratio of starting materials.
Meifen Jiang, Xiong-Wei Ni
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Continuous process for the epoxidation of terpenes using mesoscale oscillatory baffled reactors
Chemical Engineering and Processing - Process Intensification, 2022Continuous epoxidation of terpenes with H2O2 was carried out using mesoscale oscillatory baffled reactors (meso-OBRs) in a solvent-free environment. The performance of the new 3D-printed single, tri- and multi-orifice baffles was compared with helical and integral baffles. The performance investigated includes mixing intensity, induction period, steady-
Mohamad Faiz Mukhtar Gunam Resul +4 more
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Scale‐Up of Oscillatory Helical Baffled Reactors Based on Residence Time Distribution
Chemical Engineering & Technology, 2017AbstractFor the first time, the scale‐up of oscillatory helical baffled reactors (OHBR) was studied. Residence time distributions were used to assess the scale‐up over a wide range of net flow Reynolds numbers and oscillation conditions. A simple scale‐up correlation based on oscillation and net flow conditions was established to predict the plug flow ...
Safaa M. R. Ahmed +2 more
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Continuous synthesis of prebiotics in a helical oscillatory baffled reactor
Journal of Industrial and Engineering ChemistryA novel helical oscillatory baffled reactor (HOBR) was utilized for continuous production of prebiotics, using a 3D-printed prototype (4 m in length, 10 mm in diameter). The reactor's performance was evaluated for the synthesis of galactooligosaccharides (GOS) with free enzymes. Continuous operation resulted in high product concentrations, ranging from
Pravilović, Radoslava +5 more
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Development and evaluation of novel designs of continuous mesoscale oscillatory baffled reactors
Chemical Engineering Journal, 2010Abstract Oscillatory baffled reactors (OBRs) are a form of plug flow reactor, ideal for performing long reactions in continuous mode, as the mixing is independent of net flow rate leading to more compact and practical designs. Mesoscale OBRs are currently being developed for laboratory-scale processes.
Phan AN, Harvey A
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Inverse phase suspension polymerization of acrylamide in a batch oscillatory baffled reactor
Journal of Applied Polymer Science, 2000We report, for the first time, our experimental investigation of inverse phase suspension polymerization of acrylamide in a batch oscillatory baffled reactor. In such a reactor, the oscillatory motion is achieved by moving a set of orifice baffles up and down the column at the top of the reactor. The effects of both operational and design parameters on
X. Ni +3 more
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Photooxidation of a model pollutant in an oscillatory flow reactor with baffles
Chemical Engineering Science, 2003The degradation of an organic model pollutant, salicylic acid, by means of heterogeneous photocatalytic oxidation in a pulsed baffled tubular photochemical reactor (PBTPR), has been studied. The studies show that oscillatory flow in the PBTPR can efficiently produce uniform dispersion of catalysts of a wide range of catalyst particle sizes, ranging ...
Gao, Ping +4 more
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