| 摘要 |
FIELD: chemistry. ^ SUBSTANCE: initial mixture 2 of the reaction gas which contains propylene and molecular oxygen, as well as molecular nitrogen and propane as inert gases - diluents, in which molar ratio of molecular oxygen to propylene O2:C3H6ëÑ1, at high temperature is passed through a fixed catalyst bed, the active mass of which is at least one polymetallic oxide containing Mo, Fe and Bi, in which the initial mixture 2 of the reaction gas, per total volume, contains 7-9 vol. % propylene, 9.8-15.5 vol. % molecular oxygen, 10.5-15.5 vol. % propane and 40-60 vol. % molecular nitrogen, provided that the molar ratio V1 of propane contained in the initial mixture 2 of the reaction gas to propylene contained in the initial mixture 2 of the reaction gas is between 1.5 and 2.2, molar ratio V2 of molecular nitrogen contained in the initial mixture 2 of the reaction gas to molecular oxygen contained in the initial mixture 2 of the reaction gas is between 3.5 and 4.5, and molar ratio V3 of molecular oxygen contained in the initial mixture 2 of the reaction gas to propylene contained in the initial mixture 2 of the reaction gas is between 1.4 and 2.14. ^ EFFECT: improved method of lowering flash point temperature of a fixed catalyst bed during synthesis of acrolein or acrylic acid or mixture thereof through heterogeneously catalysed gas-phase partial oxidation of propene. ^ 27 cl, 1 dwg, 3 tbl, 3 ex |
