REACTOR-MIXER FOR REALIZATION OF THE PROCESS OF CARBOXYMETHYLATION OF AN ALKALINE CELLULOSE Russian patent published in 2005 - IPC

FIELD: chemical industry; food industry; pharmaceutical industry; perfume-cosmetic industry; construction materials industry.

SUBSTANCE: the invention presents the reactor-mixer used for treatment of the treatment of the caking viscous-fibrous materials and may be applied in chemical industry, food industry, pharmaceutical industry, perfume-cosmetic industry and in production of construction materials. The device contains a body and the bladed feed screws being in engagement with each other. The bladed feed screws are made with a controlled rate of rotation, the blades are removable and are the fragments of the screw surface with a step H from 0.5 up to 1,3 of the diameter, with the central angle φ from 90° up to 270°. The vanes on the shaft are mounted with a step H_l = H· φ / 360° with a shift of φ / 2, mainly in a direction of the screw line of the blades. A direction of the swirl of the screw lines of blades of adjacent feed screws is different and blades are mounted with an angular shift from 0 ° up to 180 °. The invention allows to exclude an excessive axial recycling of the mixture, to average duration of the particles presence in the reactor, to equalize the time of the particles contact with the heat exchange surface.

EFFECT: the invention allows to exclude an excessive axial recycling of the mixture, to average duration of the particles presence in the reactor, to equalize the time of the particles contact with the heat exchange surface.

3 cl, 1 dwg