PLANT FOR PRODUCING NICOTINIC ACID Russian patent published in 2006 - IPC B01J8/06 B01J19/00 

FIELD: physical or chemical processes.

SUBSTANCE: plant comprises unit for feeding reagents, pipelines connected to the evaporator unit for contacting, unit for extracting products of contacting provided with the desublimator. The unmovable cylindrical housing of the desublimator is provided with stationary knives and jacket for their cooling. The inner rotating drum is provided with knifes that pass trough the spaces between the stationary knifes in rotation. The unit for extracting products of contacting is additionally provided with the cyclone and filter for catching nicotinic acid, and the desublimator has unmovable cylindrical housing mounted vertically on the hatch of the horizontal collector of crystals. The inner rotating hollow drum is made of a set of hollow conical lenses whose inner and outer diameters are interconnected. The outer surfaces of the disks are provided with knifes made of triangles. The outer cylindrical housing is provided with rhomboid knifes whose front section is set into the hollows between the conical disks of the lenses. The crystal collector receives screw mixer with screw blade. The top section of the crystal collector has a connecting pipe for discharging gases, and the bottom section is provided with the connecting pipe for discharging the crystals of the nicotinic acid.

EFFECT: enhanced efficiency.

4 cl, 3 dwg