Lecture

Particle diameter and pressure drop

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In course

ChE-340: The engineering of chemical reactions

Ce cours applique les concepts de la cinétique chimique et des bilans de masse et d'énergie pour résoudre les problèmes de génie des réactions chimiques, en mettant l'accent sur les applications industrielles. Les étudiants développent leur capacité d'anal ...

Description

This lecture discusses the relationship between particle diameter and pressure drop in catalytic reactions, exploring the impact on conversion and reactivity. It covers the tradeoff between reactivity and pressure drop, the influence of particle size on reaction rates, and the use of MATLAB simulations to analyze these phenomena.

Instructors (3)

Thierry Chappuis

Ardemis Anoush Boghossian

Albert Renken

Teaching & PhD Past EPFL PhD Students Serge Maeder, Jacques Membrez, Stéphane Porchet, Philippe Menoud, Brigitta Frank, Harvey Randall, Wolfgang Zimmerer, Frédéric Van Vyve, Serge Golay, Jianzhong Yang, Stéphane Dubuis, Philippe Warnery, Anders Nattorp, Christian Spühler, Laurent Cavin, Miriam Lorenzi, Bastien Monnerat, André Rouge, Olivier Wolfrath, Peter Stahl, Ralf Maurer, Konrad Geissler, Volker Höller, Benoît Louis, Pierre Reuse, Fabio Rainone, Eric Joannet, Chrystèle Horny Past EPFL PhD Students as co

Official source

Ontological neighbourhood

Energy engineering

Nuclear power: Topics in nuclear power

Related concepts (32)

Molten salt reactor

A molten salt reactor (MSR) is a class of nuclear fission reactor in which the primary nuclear reactor coolant and/or the fuel is a mixture of molten salt with a fissionable material. Two research MSRs operated in the United States in the mid-20th century. The 1950s Aircraft Reactor Experiment (ARE) was primarily motivated by the technology's compact size, while the 1960s Molten-Salt Reactor Experiment (MSRE) aimed to demonstrate a nuclear power plant using a thorium fuel cycle in a breeder reactor.

CANDU reactor

The CANDU (Canada Deuterium Uranium) is a Canadian pressurized heavy-water reactor design used to generate electric power. The acronym refers to its deuterium oxide (heavy water) moderator and its use of (originally, natural) uranium fuel. CANDU reactors were first developed in the late 1950s and 1960s by a partnership between Atomic Energy of Canada Limited (AECL), the Hydro-Electric Power Commission of Ontario, Canadian General Electric, and other companies.

Breeder reactor

A breeder reactor is a nuclear reactor that generates more fissile material than it consumes. These reactors can be fuelled with more commonly available isotopes of uranium and thorium, such as uranium-238 or thorium-232, as opposed to the rare uranium-235 which is used in conventional reactors. These materials are called fertile materials since they can be bred into fuel by these breeder reactors. Breeder reactors achieve this because their neutron economy is high enough to create more fissile fuel than they use.

Reaction rate constant

In chemical kinetics, a reaction rate constant or reaction rate coefficient (k) is a proportionality constant which quantifies the rate and direction of a chemical reaction by relating it with the concentration of reactants. For a reaction between reactants A and B to form a product C, where A and B are reactants C is a product a, b, and c are stoichiometric coefficients, the reaction rate is often found to have the form: Here k is the reaction rate constant that depends on temperature, and [A] and [B] are the molar concentrations of substances A and B in moles per unit volume of solution, assuming the reaction is taking place throughout the volume of the solution.

Reaction mechanism

In chemistry, a reaction mechanism is the step by step sequence of elementary reactions by which overall chemical reaction occurs. A chemical mechanism is a theoretical conjecture that tries to describe in detail what takes place at each stage of an overall chemical reaction. The detailed steps of a reaction are not observable in most cases. The conjectured mechanism is chosen because it is thermodynamically feasible and has experimental support in isolated intermediates (see next section) or other quantitative and qualitative characteristics of the reaction.

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