Publication

Characterization of segregation in a tubular polymerization reactor by a new chemical method

Albert Renken, Thierry Meyer
1990
Journal Articles

Abstract

Micromixing in a tubular polymn. reactor is characterized by the mol. wt. of polystyrene obtained in the presence of a chain transfer agent. Monomer and the transfer agent are fed sep. into the reactor. For const. overall inlet concns., the mean mol. wt. produced is strongly dependent on mixing intensity. Expts. were carried out in a pilot plant loop tubular reactor of different configurations and monomer conversions ?80%. The degree of segregation as a function of energy dissipation and the characteristic reaction time can be described by an empirical correlation. It could be shown that the design of the mixer can change considerably the micromixing efficiency. [on SciFinder (R)]

Official source

https://infoscience.epfl.ch/entities/publication/73e3d3b2-22a9-49a5-84f6-1ceb23f78e5c

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Albert Renken, Thierry Meyer
1990
Journal Articles

Abstract

Official source

https://infoscience.epfl.ch/entities/publication/73e3d3b2-22a9-49a5-84f6-1ceb23f78e5c

About this result

Related concepts (32)

Chain transfer

Chain transfer is a polymerization reaction by which the activity of a growing polymer chain is transferred to another molecule. P• + XR' → PX + R'• Chain transfer reactions reduce the average molecular weight of the final polymer. Chain transfer can be either introduced deliberately into a polymerization (by use of a chain transfer agent) or it may be an unavoidable side-reaction with various components of the polymerization.

Nuclear reactor

A nuclear reactor is a device used to initiate and control a fission nuclear chain reaction or nuclear fusion reactions. Nuclear reactors are used at nuclear power plants for electricity generation and in nuclear marine propulsion. Heat from nuclear fission is passed to a working fluid (water or gas), which in turn runs through steam turbines. These either drive a ship's propellers or turn electrical generators' shafts. Nuclear generated steam in principle can be used for industrial process heat or for district heating.

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.

Related publications (21)

Characterization of segregation in a tubular polymerization reactor by a new chemical method

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