Transposition of an Exothermic Reaction From a Batch Reactor to an Intensified Continuous One

Anxionnaz, Zoé; Cabassud, Michel; Gourdon, Christophe; Tochon, Patrice

doi:10.1080/01457630903501153

Cited by 25 publications

(21 citation statements)

References 15 publications

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“…The typical module presents similar characteristics to the Corning Advanced‐Flow TM reactor, with hydraulic diameter of about 2 mm and total process volume of around 15 mL. Fluidic channels exhibit a specific design to ensure significant heat and mass transfer performance, particularly in the case of multi‐phase applications…”

Section: Methodsmentioning

confidence: 99%

Continuous lipase esterification using process intensification technologies

Elgue

Conté

Marty

et al. 2013

J of Chemical Tech & Biotech

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BACKGROUND Nowadays, developing continuous enzymatic processes, especially when a two‐phase medium is required, remains a great challenge. So, there is a need to provide a technical solution for generating highly controlled interfacial area in a small volume. In this study, four types of reactors conventionally used for chemical process intensification and marketed by Corning, Chart Industries, NiTech Solutions and AM Technology, were tested for continuous lipase‐catalysed esterification in two‐phase medium. RESULTS The NiTech oscillating reactor proved to be the more efficient to transform the input mechanical power into mass transfer performance while proposing easily adjustable residence time. Nevertheless, Corning and Chart heat‐exchanger reactors were shown to be very suitable candidates even if mass transfer performances depend on the flow‐rate and therefore are not uncoupled from the residence time. This results in a less convenient choice of operating conditions. The Coflore system was not so convincing but it may be due to the injection device not well adapted to this system. CONCLUSION This work demonstrates that novel technologies, recently proposed for intensification of chemical processes, are indeed very suitable and provide a relevant alternative to conventional processes for enzymatic reactions and therefore for two‐phase reactions limited by the interfacial area value. Also, it has been shown here that the model reaction considered could be a simple way to characterize mass transfer performances of these technologies. © 2013 Society of Chemical Industry

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Section: Methodsmentioning

confidence: 99%

Continuous lipase esterification using process intensification technologies

Elgue

Conté

Marty

et al. 2013

J of Chemical Tech & Biotech

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“…[ 13,[22][23][24][25] Regarding the heat of polymerization, previous data about acrylic acid led to values ≈−77.4 kJ mol −1 .…”

Section: Design Of Continuous Tubular Reactormentioning

confidence: 97%

Continuous Pilot‐Scale Tubular Reactor for Acrylic Acid Polymerization in Solution Designed Using Lab‐Scale Rheo‐Raman data

Chevrel

Hoppe

Meimaroglou

et al. 2016

Macro Reaction Engineering

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A continuous pilot‐scale tubular reactor is designed for the polymerization of acrylic acid in aqueous solution. The reactor is equipped with CSE‐X static mixers from Fluitec which strongly increase heat and mass transfer despite laminar flow. A mathematical model of the reactor is proposed assuming that it is a perfect plug‐flow reactor and using kinetic and rheological equations previously established using a lab‐scale rheo‐Raman device. Calculated values of temperature and polymer concentration profile along the reactor as well as outlet average molar masses and viscosity are in good agreement with experimental results. Provided that the outlet viscosity of reaction medium does not exceed 0.5 Pa s, no reactor fouling occurred. On the contrary, fouling is detected after 6 to 8 h running with higher viscosities. This work is the first demonstration of applicability of CSE‐X static mixer elements in a continuous polymerization process producing high molar mass water‐soluble polymer. In addition, successful scale‐up of polymerization reactor is reported up to pilot‐scale as well as batch to continuous transposition, only on the basis of lab‐scale rheo‐Raman data. The interest of rheo‐Raman device for the acquisition of primary data is established.

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“…Since it is temperature sensitive, i.e. the conversion rate depends on the operating temperature, this reaction is an ideal candidate for case study [4,[24][25][26][27][28].…”

Section: The Oxidation Reactionmentioning

confidence: 99%

“…This device combines the benefits of a large heat transfer performance and a plug-flow regime allowing an intensive radial mixing, as a result of the specific design of process channels [4][5][6][7][8][9]. These geometries generate instabilities even in laminar flow regime (50 < Re < 2000).…”

Section: Introductionmentioning

confidence: 99%

Implementation of ‘chaotic’ advection for viscous fluids in heat exchanger/reactors

Anxionnaz‐Minvielle

Tochon

Couturier

et al. 2017

Chemical Engineering and Processing: Process Intensification

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OATAO is an open access repository that collects the work of Toulouse researchers and makes it freely available over the web where possible. This is an author-deposited version published in : http://oatao.univ-toulouse.fr/ Eprints ID : 17719 A B S T R A C TWhen viscous fluids are involved, laminar hydraulic conditions and heat and mass transfer intensification are conflicting phenomena. A channel geometry based on Split-And-Recombine (SAR) patterns is experimentally investigated. The principle implements the Baker's transformation and 'chaotic' structures are generated to promote heat and mass transfer. This work assesses the energy efficiency of different heat exchanger/reactors integrating these SAR patterns.The heat transfer capacity is assessed and compared with the energy consumption of each mock-up. It is sensitive to the cooling mode and to the number of SAR patterns per length unit as well.The continuous oxidation of sodium thiosulfate with hydrogen peroxide has been implemented. Conversions up to 99% are reached according to the utility fluid temperature and the residence time.Finally, the whole performances of the SAR geometries are compared to a plate-type heat exchanger/ reactor with a corrugated pattern. The more viscous the fluid, the more the energy efficiency of the SAR design increases compared to the corrugated design because of the balance between advection and diffusion mechanisms. The interest in terms of energy efficiency in working with SAR heat exchanger/ reactor appears from Reynolds numbers below 50.

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Transposition of an Exothermic Reaction From a Batch Reactor to an Intensified Continuous One

Cited by 25 publications

References 15 publications

Continuous lipase esterification using process intensification technologies

Continuous lipase esterification using process intensification technologies

Continuous Pilot‐Scale Tubular Reactor for Acrylic Acid Polymerization in Solution Designed Using Lab‐Scale Rheo‐Raman data

Implementation of ‘chaotic’ advection for viscous fluids in heat exchanger/reactors

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