Basf Aktiengesellschaft

Horst Schauer

Harald Laas

Lothar Arnold

Peter Tavs

Gerd-Juergen Engert

Rudolf Magin

Franz Nenninger

Klaus De Haas

The yield of 2,5,6-trimethyl-cyclohex-2-en-1-one is increased by reacting diethyl ketyone, in the presence of an alkali, with crotonaldehyde or a compound which is converted to crotonaldehyde under the reaction conditions chose, and working up the reaction mixture by distillation, by a method in which the distillation residue obtained is either

Increasing the yield of 2.5.6-trimethylcyclohex-2-en-1-one

A mechanical process for filling the tubes (3) of tubular reactors with granular solids, e.g. catalysts, wherein two or more streams of material, e.g. of different catalytic activity, can be introduced in a controlled manner into each tube (3) which is to be filled, from two or more stock vessels (1,2) via two or more dispensing devices (MI, MZ) mounted above the upper tube end plate (13). By this process, different thermal/catalytic reaction profiles can be achieved over the length of the tube, or in certain groups of tubes within the tubular reactor, with substantially less time being required for filling the tubes (3).

Process and apparatus for charging tubular reactors with granular

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Mutterstadt, Germany

Horst Schauer