Process and apparatus for mixing a gas with a liquid

摘要

To mix a gas with a liquid, in particular with a reaction component for the production of foams based on polyurethane, an eddying motion is generated in the liquid by the rotary motion of a central stirring tool (2) guided into the vessel (1) from the top and gas situated on the surface of the liquid is introduced into the liquid. The liquid-gas mixture is exposed to local pressure variations by means of a dispersion element (3) which is eccentrically arranged in relation to the vessel axis and rotates at a frequency of 1000 to 7000 min to the power -1. In this manner, a particularly homogeneous liquid-gas mixture can be produced with high gas contents. <IMAGE>