Fluid sprinkling – spraying – and diffusing – Processes – Including mixing or combining with air – gas or steam
Patent
1978-06-01
1979-10-16
Marbert, James B.
Fluid sprinkling, spraying, and diffusing
Processes
Including mixing or combining with air, gas or steam
239424, A01N 1702, A62C 112
Patent
active
041710916
ABSTRACT:
A two phase sprayer and process are disclosed in which the sprayer has a liquid supply tube surrounded by a coaxial gas or gas mixture supply tube which extends beyond the length of the liquid supply tube where the gas flow surrounds and atomizes the expelled liquid. The sprayer has a unique structure in part characterized by a narrowed taper gas supply tube which converges towards the outlet at an angle of 70.degree.-90.degree. with respect to the sprayer axis. The internally-positioned, coaxial liquid supply tube is chamfered also at a similar 70.degree.-90.degree. angle, the gas and liquid tubes at their outlet being essentially parallel.
The joint of the narrowing part of the gas tube and the outflow channel is rounded.
These sprayers efficiently spray relatively large amounts of liquid at low gas velocities and are particularly adapted for spraying a mixture of urea and ammonia into a bed of reactive, fluidized particles to form melamine without destroying desirable features of the fluidized bed into which the urea/ammonia mixture is sprayed.
REFERENCES:
patent: 3727839 (1973-04-01), Marsh
patent: 3831843 (1974-08-01), Masai
Hendriks Petrus F. A. M.
van Hardeveld Rudolf
Marbert James B.
Stamicarbon B.V.
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