Abstract The usual vertical reactor vessel of a conventional gas cooler of a fluosolids or other dust-generating system has combined therewith special atomizing spray nozzles constructed and arranged in the reactor vessel to eliminate caking, on interior walls of the reactor vessel, of particulate solids suspended in the entering hot gas, and, thus, the necessity of digging out the caked solids at frequent intervals. The spray nozzles are of acoustic resonance type having respective resonator cups spaced from air-water-mixing nozzle discharge to interrupt, atomize, and disseminate the air-water streams. In accordance with the invention, the space between nozzle discharge and resonator cup of such a nozzle is protected against induction of particulate solids by a cylindrically tubular shield, thereby protecting nozzle parts against abrasion and the air-water stream against entrainment of solids. In contrast to conventional gas coolers, relatively few nozzles of relatively great capacity are positioned in the top only of the reactor vessel, the remainder of the reactor vessel being free of spray nozzles.
An atomizing spray nozzle, comprising a nozzle body defining an air-water mixing zone at the discharge end thereof; passage means for separately supplying air and water to said mixing zone; a resonator cup concentric with said mixing zone and spaced therefrom outwardly of the nozzle body for receiving and interrupting at least part of an air-water stream projected from said mixing zone; means securing said cup to the nozzle body so the area lying between mixing zone and cup is substantially open circumferentially thereof; and an imperforate cylindrically tubular shield surrounding said area between mixing zone and cup in circumferentially spaced relation thereto so as to define an annular discharge orifice for atomized spray approximately flush with and closely surrounding the rim of said cup.
Claim 2
Dependent Claim
125 words
An atomizing spray nozzle, comprising a nozzle body defining an air-water mixing zone at the discharge end thereof; passage means for separately supplying air and water to said mixing zone; a resonator cup concentric with said mixing zone and spaced therefrom outwardly of the nozzle body for receiving and interrupting at least part of an air-water stream projected from said mixing zone; means securing said cup to the nozzle body so the area lying between mixing zone and cup is substantially open circumferentially thereof; and an imperforate cylindrically tubular shield surrounding said area between mixing zone and cup in circumferentially spaced relation thereto so as to define an annular discharge orifice for atomized spray approximately flush with and closely surrounding the rim of said cup.
Claim 3
Dependent Claim
34 words
An atomizing spray nozzle in accordance with claim 1, wherein the means securing the resonator cup to the nozzle body comprises a U-shaped yoke fastened to said cup and to the cylindrically tubular shield.
Claim 4
Dependent Claim
74 words
In combination, a closed, vertical, gas-cooler reaction vessel having an inlet centrally of its top wall for solid-particle-carrying gas to be cooled and an outlet near its bottom for the cooled gas; and a plurality of atomizing spray nozzles in accordance with claim 1 positioned in said top wall so as to discharge atomized air-water spray downwardly within said vessel, said spray nozzles being the only source of cooling water spray in said vessel.