Method for spraying starting material particles in continuous hy

Details Method for spraying starting material particles in continuous hy Method for spraying starting material particles in continuous hy

1997-11-20

1999-09-21

Kashnikow, Andres

Fluid sprinkling, spraying, and diffusing

Processes

Including heating or cooling

239128, 239132, 2391321, 2391323, 2394245, 422198, B05B 124, B05B 1500

Patent

active

059542675

ABSTRACT:
A method for spraying starting material particles in a continuous hydrothermal reaction, comprising spraying an aqueous fluid pressurized and heated in excess of the saturated vapor temperature and a starting material slurry pressurized at ordinary temperature. A starting material slurry feed orifice is provided in a central portion of an aqueous fluid spray orifice to spray and mix the aqueous fluid and the staring material slurry. In order to avoid entry of heat into the starting material fluid from the aqueous fluid, a heat-insulating layer is provided between feed paths for the respective two fluids. According to the above method, the starting material slurry is sprayed particularly under subcritical to supercritical conditions beyond the saturated vapor temperature to form fine particles without agglomeration thereof, whereby a hydrothermal reaction can be continuously and efficiently effected.

REFERENCES:
patent: 3601378 (1971-08-01), Hurst
patent: 4946475 (1990-08-01), Lipp et al.
patent: 5346133 (1994-09-01), Bogner et al.
patent: 5503548 (1996-04-01), Franke et al.
patent: 5543126 (1996-08-01), Ota et al.
patent: 5558783 (1996-09-01), McGuinness
patent: 5674405 (1997-10-01), Bourhis et al.
patent: 5843386 (1998-12-01), Makino et al.

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