C - Chemistry – Metallurgy – 01 – B
Patent
C - Chemistry, Metallurgy
01
B
23/384, 23/62
C01B 25/30 (2006.01) B01D 1/18 (2006.01) B01J 19/26 (2006.01) C01B 25/41 (2006.01) C01B 25/42 (2006.01)
Patent
CA 1186131
PROCESS AND DEVICE FOR MAKING ALKALI METAL PHOSPHATES BY SPRAYING ALKALI METAL PHOSPHATE SOLUTIONS OR SUSPENSIONS ABSTRACT OF THE DISCLOSURE: The disclosure relates to a process for making alkali metal phosphates, especially alkali metal polyphosphates, from alkali metal phosphate solutions or suspensions. To this end the solutions or suspensions are forced to flow through a plurality of single opening nozzle structures under a pressure of 6 to 66 bars and sprayed inside a tower through a flame zone produced by a plurality of burners arranged in annular fashion.The disclosure also relates to a device for carrying out the process, wherein a cylindrical spray tower (1) having a tapered lower end and being closed by means of a cover (2) has a solvent feed pipe (5) terminating in a spray means (6) centrally passed through the cover, and wherein a plurality of burners is passed through the cover (2), concentrically around the solvent feed pipe (5). The spray means (6) is comprised of a feed pipe (15) and at least one spray head (12), which has a plurality of single opening nozzle structures (17) disposed in its terminal surface area (13). At least one pressure-increasing pump (7) is disposed in the solvent feed pipe (5).
407701
Damman Ben
de Witte Paul
Drijver Jan
Kinneging Hans
Scheffer Hans
Fetherstonhaugh & Co.
Hoechst Aktiengesellschaft
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