Method and apparatus for contacting solid particles and fluid

Details Method and apparatus for contacting solid particles and fluid Method and apparatus for contacting solid particles and fluid

1994-12-22

1996-09-03

Warden, Robert J.

Chemical apparatus and process disinfecting, deodorizing, preser

Chemical reactor

Fluidized bed

422139, 422142, 422147, 208157, F27B 1508, C10G 3500

Patent

active

055521193

ABSTRACT:
A method and apparatus are described for contacting solid particles and fluid. A liquid is sprayed as liquid droplets from the discharge tip of a nozzle into hot solid particles passing upwardly in a vertical pipe. A venturi is formed in the pipe, and the venturi has an entrance portion which is upwardly convergent to the throat and an exit portion which is upwardly divergent from the throat. The tip of the nozzle is so located relative to the venturi that liquid droplets commence vaporization, due to heat transfer from the hot solid particles, no further up stream (relative to the direction of movement of solid particles up the pipe) than the throat of the venturi thereby resulting in a high degree of turbulence which causes good mixing of particles and vapor downstream of the venturi throat. The particles-vapor mixture leaving the exit portion of the venturi is well mixed and particles are substantially uniformly mixed with vapor in radial planes of the pipe downstream of the venturi.

REFERENCES:
patent: 3959401 (1976-05-01), Albright et al.
patent: 4523987 (1985-06-01), Pennick
patent: 4578183 (1986-03-01), Chou et al.
patent: 5053203 (1991-10-01), Mauleon et al.
patent: 5112576 (1992-05-01), Kruse
patent: 5139748 (1992-08-01), Lomas et al.

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