| abstract |
In a process and apparatus for making grease, saponification in an oil medium takes place in a reactor (16), water produced in the saponification and/or other solvent is removed in an evaporator (17), the grease base is fed into a heat-treatment device (18), optionally together with further oils and/or additives, and then into a cooler and homogenizer (19). One or more of the saponification reactor (16), the heat treatment device (18) and the cooler (19) is a static mixing duct (1) containing separation walls (2) dividing the duct into tapering chambers (I, V and VII), and flaring chambers (II, IV and VIII) into which components are fed. Because of the changing flow cross-sections of the chambers, components fed therein are accelerated or decelerated, and a stream that has passed through a tapering chamber is contacted with a stream that has flowed through a flaring chamber when those streams have unequal flow velocities, thereby bringing about intimate contact of the streams. <IMAGE> |