Concept

Continuous stirred-tank reactor

Publications associées (116)

Enzymic reaction in a three-phase liquid-liquid-solid catalyst system. Application to the optical resolution of phenylalanine

The development of a phasic system for the enzymic resoln. of racemic phenylalanine (I) up to benchtop pilot plant scale is described. The principle is based upon the hydrolysis of racemic Pr ester of I with immobilized a-chymotrypsin (II) in which only th ...

1991

Direct Visual Observation of Powder Dynamics in Rf Plasma-Assisted Deposition

Christoph Hollenstein, Alan Howling

Contamination due to particles generated and suspended in silane rf plasmas is investigated. Powder is rendered visible by illumination of the reactor volume. This simple diagnostic for global, spatio-temporal powder dynamics is used to study particle form ...

1991

Simple and accurate shortcut procedure to account for axial dispersion in countercurrent separation columns

Urs von Stockar, Xiaoping Lu

A method is proposed of correcting the design of countercurrent sepn. columns for the impact of axial-dispersion effects. After computing the required no. of transfer units (NTU) employing conventional procedures based on the plug-flow assumption, the meth ...

1991

Transesterification of phenylalanine by means of chymotrypsin in a continuous fixed bed reactor

Albert Renken

An enzymic transesterification was carried out in a continuously operated fixed bed reactor. The reaction system consisted of immobilized a-chymotrypsin catalyzing the transfer of the L-phenylalanine radical from the racemic Pr ester to 1,4-butanediol, yie ...

1991

Transient behavior of catalytic reactions with stop-effect

Albert Renken

The transient behavior of a heterogeneous catalytic process described by a 2-site adsorption-desorption model was studied. After a stop on the supply of reactant, a temporary increase in the prodn. rate is predicted. Anal. solns. to describe the instantane ...

1990

Practical guidelines for the determination of oxygen transfer coefficients (KLa) with the sulfite oxidation method

Urs von Stockar

The sulfite oxidn. method was reinvestigated to establish a procedure for the measurement of O2 transfer coeff. (KLa). Co ion catalyzed oxidns., using buffered Na2SO3 solns., were conducted in an aerated, baffled tank which was fitted with a turbine impell ...

1985

Engineering Aspects of Fluidized Bed Reactor Operation Applied to Lactose Treatment of Whole Whey

Albert Renken

An interesting possibility for the use of lactoserum in human nutrition is the hydrolysis of lactose to glucose and galactose, sugars which exhibit a better digestibility, a higher solubility, and which have a greater sweetening power than lactose. The hyd ...

1985

Engineering Aspects of Fluidized Bed Reactor Operation Applied to the Lactose Treatment of Whole Whey

Albert Renken

1985

Periodic operating mode of continuous chemical reactors

Albert Renken

In a review with 50 refs., use of controlled oscillations of the process parameters in continuous chem. reactors (e.g., throughput, temp., initial concn. of reactants in the feed) is described. Use of dynamics of the individual reaction steps for process o ...

Verlag Chemie1983

The thermal bulk polymerization of styrene in a tubular reactor - reactor behavior and product properties

Albert Renken

Thermal, bulk polymn. of styrene [100-42-5] in a pilot plant composed of a recycle tubular reactor for prepolymn. and a tubular reactor, entirely filled with static mixer elements, is discussed. Conversion in the prepolymn. reactor was 0-60% and at the out ...

1983

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