Drying and gas or vapor contact with solids – Apparatus – With means to treat gas or vapor
Patent
1978-02-23
1980-02-26
Danison, Walter C.
Drying and gas or vapor contact with solids
Apparatus
With means to treat gas or vapor
34 57R, 260112B, A23J 106, F26B 508
Patent
active
041898460
ABSTRACT:
A process for continuously producing dried protein concentrates, namely blood meal, from an aqueous solution of animal blood, in which the solution is atomized in superheated steam at a temperature of about 400.degree. C. The atomization of the solution is accomplished, at least in part, by a centrifugal atomizer that throws the solution radially outward in an extremely thin layer of finely divided droplets having diameters less than 100 microns. The small droplets pass into the stream of superheated steam, which causes the liquid to evaporate, and the dried blood solids to precipitate to the bottom of the collector where they are discharged by a conveyor. The superheated steam, which was cooled to about 200.degree. C. by the drying process, goes to a cyclone separator which removes any entrained solids, and is then returned to the heat exchanger, where it is again heated to about 400.degree. C. for re-use in the process.
REFERENCES:
patent: 3123593 (1964-03-01), Allan et al.
patent: 3450537 (1969-06-01), Filstrup
patent: 3615651 (1971-10-01), Parks
Fiedler Jurgen
Fricke Klaus
Danison Walter C.
GEFI Gesellschaft fur Industriewarme und Verfahrenstechnik mit
Kidder Herbert E.
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