Concentrating evaporators – Processes – Spraying
Patent
1982-07-19
1985-02-26
Bascomb, Wilbur
Concentrating evaporators
Processes
Spraying
159 3, 159 4A, 423305, B01D 118, C01B 2530
Patent
active
045016399
ABSTRACT:
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).
REFERENCES:
patent: 3023083 (1962-02-01), Rodis et al.
patent: 3499476 (1970-03-01), Hartlapp et al.
patent: 3562768 (1971-02-01), Edquist et al.
patent: 3577864 (1971-01-01), Berg
patent: 3607019 (1971-09-01), Herink
patent: 3661514 (1972-05-01), Herink
Damman Ben
de Witte Paul
Drijver Jan
Kinneging Hans
Scheffer Hans
Bascomb Wilbur
Hoechst Aktiengesellschaft
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