METHOD FOR DETERMINING rate constant gas-liquid CHEMICAL REACTIONS

摘要

FIELD: measurement equipment.;SUBSTANCE: invention is related to chemical technology and may be used in development and design of industrial mass-exchange gas-liquid apparatuses, also in study of gas-liquid chemical reactions kinetics. Method includes bringing gas and liquid in contact as single laminar jet with diametre d of liquid is passed through centre of cylindrical reaction chamber with diametre D and length L, which is filled with gas component of reaction supplied in composition of gas mixture, which it sent from output of reaction chamber to measurement cell, and concentrations of reaction gas component are measured in specified mixture n₀ and n before and after jet of liquid is supplied into reaction chamber, accordingly, besides parametres of mediums and plant are selected so that the following inequalities are satisfied: , where is coefficient of mass transfer of gas component from surface to solution under conditions, when ratio n/n₀ does not depend on partial pressure of reaction gas component in reactor; β_g, β₁ are coefficients of mass transfer in gas and liquid accordingly; U is gas velocity; is concentration of liquid component in core of liquid flow; is concentration of gas component in flow core; D_c is coefficient of absorbed component diffusion in liquid; H_c is Henry solubility constant, and constant of liquid phase reaction speed K₁ is calculated from ratio .;EFFECT: improved information value of detection.;4 cl, 1 ex, 1 dwg