Abstract: An apparatus for producing seed crystals in melts has a vertically oriented, closed vessel having a vessel base and having at least one inlet for the melt and having at least one outlet opening for the inoculated melt provided with seed crystals. A preferably annular region of the vessel wall is constructed as a cooling surface. In the interior of the vessel there is arranged a scraping unit which comprises a motor-driven rotating shaft which extends axially through the vessel as far as a point just short of the vessel base. At its end towards the vessel base, the shaft is provided with at least one scraping arm which, starting from the lower end of the shaft close to the vessel base, extends first in the direction towards the vessel wall and thence substantially parallel to the annular cooling surface and axially parallel to the drive shaft.

Abstract: The apparatus (1) for wet oxidation is pre-assembled with its individual units, namely a high-pressure pump (2), a heat exchanger (3), a reactor (4) for the actual wet oxidation and a compressor (5) for feeding an oxygen/gas mixture, in one or two supporting flames and is accommodated in such a manner that its dimensions and its overall weight allow it to be transported on a road and/or rail vehicle, there advantageously being provided two such supporting flames in the form of standard containers (8 and 9), of which one may contain the reactor (4), divided into individual tube sections (6), and the heat exchanger (3), and the other may contain the remaining units, so that the entire apparatus can be pre-assembled into virtually operational condition and the two containers simply have to be set up, joined together and connected on site. Wet oxidation can thus be carried out even where relatively small quantities of medium are to be purified.

Abstract: A process and an apparatus used to produce a suspension of cyanuric chloride in water, or to react cyanuric chloride with ammonia or with amines. It is possible to produce cyanuric chloride suspensions in water which have a mean particle size of below 20 .mu.m, and a concentration of higher than 20% by weight of cyanuric chloride.

Abstract: The process and the apparatus according to the invention are used to produce a suspension of cyanuric chloride in water, or to react cyanuric chloride with ammonia or with amines. It is possible to produce cyanuric chloride suspensions in water which have a mean particle size of below 20 .mu.m, and a concentration of higher than 20% by weight of cyanuric chloride.

Abstract: The process and the apparatus according to the invention are used to produce a suspension of cyanuric chloride in water, or to react cyanuric chloride with ammonia or with amines. It is possible to produce cyanuric chloride suspensions in water which have a mean particle size of below 20 .mu.m, and a concentration of higher than 20% by weight of cyanuric chloride.