A continuous catalytic hydrogenation process, in which a reaction mixture
containing the substance to be hydrogenated, the hydrogenation product,
hydrogen and the hydrogenation catalyst suspended in the reaction mixture
is recirculated in a reactor. Part of the hydrogenation product is removed
from the reactor and the substance to be hydrogenated and hydrogen are fed
into the reaction. In this process the substance to be hydrogenated and
the hydrogen are mixed before entering the reactor. A venturi nozzle is
particularly suitable as the mixing device.
