Parameters affecting thermal risk through a kinetic model under adiabatic condition: Application to liquid-liquid reaction system

Leveneur, Sébastien; Pinchard, Maxime; Rimbault, Antoinette; Shadloo, Mostafa Safdari; Meyer, Thierry

doi:10.1016/j.tca.2018.05.024

Cited by 32 publications

(25 citation statements)

References 55 publications

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“…125 Many studies have focused on controlling the reaction under benign conditions and classied the safety parameters required to avoid the runaway reaction in view of kinetic modeling. [126][127][128][129][130] To diminish the side reactions, many types of research have been carried out to search various catalysts and to optimize reaction parameters such as H 2 O 2 concentrations, acetic acid to ethylenic unsaturation, and solvent systems. In general, an 80% conversion rate for plant oils can be done with epoxidation in the presence of peracid under boosted conditions 131,132 while the epoxidation of fatty acid esters gave much higher yield.…”

Section: Homogeneous Catalytic Systemmentioning

confidence: 99%

Catalytic developments in the epoxidation of vegetable oils and the analysis methods of epoxidized products

et al. 2019

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Section: Homogeneous Catalytic Systemmentioning

confidence: 99%

Catalytic developments in the epoxidation of vegetable oils and the analysis methods of epoxidized products

et al. 2019

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“…Even with acetic acid, some precaution is needed. There have been several publications recently relating to the thermal safety of the vegetable epoxidation process [90][91][92][93][94], discussing in detail the thermal risks present in the Prilezhaev system and providing a kinetic model under adiabatic conditions to estimate for instance, the important time-to-maximum rate parameter. The safety issues were also studied and modeled by the Italian group of Di Serio, who have epoxidized soybean oil with performic acid and both sulphuric acid and solid acid catalysts [95].…”

Section: Classical Prilezhaev Epoxidation Methodsmentioning

confidence: 99%

The Lord of the Chemical Rings: Catalytic Synthesis of Important Industrial Epoxide Compounds

et al. 2021

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The epoxidized group, also known as the oxirane group, can be considered as one of the most crucial rings in chemistry. Due to the high ring strain and the polarization of the C–O bond in this three-membered ring, several reactions can be carried out. One can see such a functional group as a crucial intermediate in fuels, polymers, materials, fine chemistry, etc. Literature covering the topic of epoxidation, including the catalytic aspect, is vast. No review articles have been written on the catalytic synthesis of short size, intermediate and macro-molecules to the best of our knowledge. To fill this gap, this manuscript reviews the main catalytic findings for the production of ethylene and propylene oxides, epichlorohydrin and epoxidized vegetable oil. We have selected these three epoxidized molecules because they are the most studied and produced. The following catalytic systems will be considered: homogeneous, heterogeneous and enzymatic catalysis.

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“…The medium rate reactions are simultaneously limited by the heat/mass transfer rate and reaction rate, and usually take tens of minutes to several hours. For example, the Prileschajew epoxidation of oils is a liquid–liquid exothermic reaction and widely used in the plasticizer industry 12–15 . It takes about 10 h in a stirred‐tank reactor as the limitation of the heat/mass transfer rate and reaction rate 16–19 .…”

Section: Introductionmentioning

confidence: 99%

Hydrodynamics and droplet size distribution of liquid–liquid flow in a packed bed reactor with orifice plates

Cai

Wang

et al. 2021

AIChE Journal

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A packed bed reactor with orifice plates (PBR@OP) was designed by adding orifice plates periodically in packed beds. Hydrodynamics and droplet size distribution in PBR@OP were experimentally investigated using fatty acid methyl esters (FAME)/water as the model liquid–liquid system. In PBR@OP, the flow pattern was close to plug flow. Droplets with Sauter mean diameter (d32) of 150–550 μm were generated. The pressure drop of orifice, flow velocity and plate spacing were key parameters to control the droplet size. The reactor performance was evaluated by analyzing a FAME epoxidation process. At the same d32 and residence time, the length and total pressure drop of PBR@OP were about 1/3 and 1/4 of those of PBR without orifice plates, respectively. Furthermore, a semi‐empirical correlation describing the d32 change in PBR@OP was developed, revealing a relative mean deviation of 8.64%. PBR@OP presents a cost‐effective option for the intensification of liquid–liquid medium rate reactions.

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Parameters affecting thermal risk through a kinetic model under adiabatic condition: Application to liquid-liquid reaction system

Cited by 32 publications

References 55 publications

Catalytic developments in the epoxidation of vegetable oils and the analysis methods of epoxidized products

Catalytic developments in the epoxidation of vegetable oils and the analysis methods of epoxidized products

The Lord of the Chemical Rings: Catalytic Synthesis of Important Industrial Epoxide Compounds

Hydrodynamics and droplet size distribution of liquid–liquid flow in a packed bed reactor with orifice plates

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