Liquid heaters and vaporizers – Cleaning
Patent
1994-03-18
1996-04-09
Bennet, Henry A.
Liquid heaters and vaporizers
Cleaning
122390, 122392, 122405, F22B 3718
Patent
active
055051634
ABSTRACT:
A nozzle for a sootblower is used to project a cleaning agent against the internal surfaces of a boiler for removing fireside deposit. The nozzle of the present invention incorporates a passageway having a convergent segment between its entrance end most narrow point, the throat. Extending from the throat to the nozzle's exit is an expansion chamber in which the cleaning fluid passing therein expands and drops in pressure to substantially ambient pressure. The flow streams of the jet of the cleaning agent discharged from the nozzle is essentially parallel to the center axis of the nozzle. Additionally, the nozzles can be mounted diametrically opposed or spaced along the longitudinal axis of the lance tube. Moreover, the nozzles mounted in a lance tube can be mounted flush with the outside surface of the lance tube, contoured to its shape.
REFERENCES:
patent: 4492187 (1985-01-01), Hammond
patent: 4565324 (1986-01-01), Rebula et al.
patent: 5063632 (1991-11-01), Clark et al.
patent: 5241723 (1993-09-01), Garrabrant
patent: 5271356 (1993-12-01), Kling et al.
patent: 5375771 (1994-12-01), Jameel et al.
Kuno Foelsch, "The Analytical Design of an Axially Symmetric Laval Nozzle for a Parallel and Uniform Jet" Jrnl. of the Aeronautical Sciences, Mar., 1949.
Bennet Henry A.
Ohri Siddharth
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