噴流ガス, 溶鉄間の気相内物質移動に関するモデル実験

概要

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Experimental studies have been made in order to analyze the mass-transfer characteristics in the gas phase in the reactor used for chemical reactions between an impinging jet of gas and an inductively-stirred liquid iron. The methods which have been used for the experimental studies are (a) sublimation of naphthalene into a nitrogen stream, (b) evaporation of pure liquids into a nitrogen stream, and (c) absorption of ammonia from ammonia-nitrogen stream into water. The results obtained are as follows ; 1) Average Sherwood numbers in the region of H/d≤(H/d)_c are correlated by the equation Sh=m(r_s/d)^<-1>Re^<0.66>Sc^<0.5>(m=0.40±0.13), and (H/d)_c is correlated by the equation (H/d)_c=0.00464Re^<0.68>(r_s/d)^<1.5> exp(3.96(d_0/D_T))(exp(S_c))/S_c, where H is the distance from nozzle to diffusing substance, r_s is radius of diffusing substance, d is inside diameter of nozzle, d_0 is outside diameter of nozzle, D_T is inside diameter of vertical wall, Sh=κ_Gd/D, Re=duρ/μ, S_c=μ/ρD, κ_G is mass-transfer coefficient for gas phase, u is average velocity of gas in nozzle, ρ is density of gas, and μ is viscosity of gas. 2) Average Sherwood numbers calculated from published data on the rate of decarburization are correlated by the equation Sh=m'(r_s/d)^<-1>Re^<0.66>Sc^<0.5>(m'=0.23±0.07).
社団法人日本鉄鋼協会の論文
1976-02-01