STEAM-ATOMIZING BURNER Russian patent published in 2002 - IPC

FIELD: furnace units in petrochemical and chemical industries and metallurgy. SUBSTANCE: steam-atomizing burner has body with tip and injector where steam pipe union with threaded cone and spool valve plug is fitted. Steam-atomizing burner is additionally provided with shield secured with tip; cross section of shield in upper portion is outlined with arc at radius R₁ = (1/3-1/2)•0,7•h with center located at distance S₁ = 0,7•(h-R₁)-R₁ from central axis of shield at height H₁ = R₁, drawn from upper edge of shield; in lower portion, section is outlined with arc at radius R₂ = h-R₁ with center located at distance S₂ = 0,7•(h-R₁)-R₂ from central axis of shield at height H₂ = R₁, drawn from upper edge of shield; upper and lower arcs of cross section are conjugated; diameter of shield in outlet section is found from the following relationship: where d_amb is diameter of embrasure; h is height of shield cavity; lower portion of shield has holes; total area of these holes is equal to area of outlet hole of shield. EFFECT: reduced yield of nitric oxides due to turbulent motion of entire fuel mixture in furnace space by 60%. 1 dwg