Basf Aktiengesellschaft

Ulrich Block

Gerd Kaibel

Klaus Ditrich

Kaspar Bott

Joachim Wagner

Dieter Wolf

Hartmut Schoenmakers

Rudolf Schmidt

Klaus Nixdorf

Wolf Muff

Method for the production of esters

In apparatuses for the preparation of phthalic anhydride and/or maleic anhydride by catalytic oxidation of naphthalene or o-xylene with air, reduced pressure is generated using liquid-jet pumps, and wash liquid is removed from the exit gas washer as a pump fluid for the liquid-jet pumps and is subsequently recycled to the exit gas washer.

Generation of reduced pressure in apparatuses in the preparation of

The temperature of the exit gas from the gas washer in the preparation of phthalic anhydride by catalytic oxidation of naphthalene or o-xylene with air is increased by a method in which flue gas from the combustion furnace for residues is mixed with the exit gas before the latter emerges into the atmosphere.

Increasing the temperature of the exit gas from the exit gas washer in

Anhydrous or substantially anhydrous formic acid is obtained by hydrolysis of methyl formate, in a process wherein

Production of anhydrous or substantially anhydrous formic acid

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Ludwigshafen, Germany

Ulrich Block