METHOD AND NOZZLE FOR FLUID SPRAY Russian patent published in 2013 - IPC B05B7/04 

FIELD: process engineering.

SUBSTANCE: invention relates to fluid spraying and can be used for spraying of growth liquid promoter in boiling bed granulator. In compliance with proposed method gas and fluid are fed via appropriate channels into mixing chamber inside nozzle 1. Gas velocity approximates to sound speed or exceeds it. Fluid speed at mixing chamber inlet is notably lower that that of gas. Mass flow of gas fed into mixing chamber varies from 1 to 10 wt % of fluid mass blow. This produced emulsion of gas and fluid inside pressurized chamber formed by gas bubbles and surrounded by filmy fluid. Sprayed flow results from expansion of emulsion whereat fluid film gets sprayed at nozzle outlet. Proposed nozzle comprises gas and fluid feed channels. Besides, said nozzle includes mixing chamber communicated with said channels via gas and fluid control valves. Said gas and fluid control valves allow formation of high-speed inlet gas flow and low-speed inlet fluid flow for making gas emulsion if fluid. Proposed nozzle can be used in boiling bed granulators.

EFFECT: lower costs, simplified assembly/disassembly.

15 cl, 12 dwg