METHOD FOR HYDROGENIZING ACETONE IN ISOPROPYL ALCOHOL
FIELD: technological processes.SUBSTANCE: present invention relates to a method for the hydrogenation of acetone to isopropyl alcohol, which is widely used as an octane additive to gasolines, anti-icing fluid, solvent in the production of surfactants, plasticizers, additives to oils, medicines. Hydr...
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Zusammenfassung: | FIELD: technological processes.SUBSTANCE: present invention relates to a method for the hydrogenation of acetone to isopropyl alcohol, which is widely used as an octane additive to gasolines, anti-icing fluid, solvent in the production of surfactants, plasticizers, additives to oils, medicines. Hydrogenation is carried out with a hydrogenating gas, in which hydrogen-containing exhaust gas is used after pyrolysis of a hydrocarbon feedstock and separation of propylene and ethylene, characterized by the following composition and concentration limits of the components, %: hydrogen - 40-90, nitrogen - 7.7-23.5, methane - 27-45, carbon dioxide - up to 1, carbon monoxide - up to 1.5, admixture of olefins - up to 3, diene hydrocarbons - up to 2.5, oxygen - up to 0.5, in the presence of a hydrogenation catalyst on a neutral carrier, the use of copper in the amount of 10-30 wt.%, deposited on a carrier in the form of silica gel granules with a grain size of 2.8-7.0 mm, specific surface area of 290-330 m/g - the rest, which is activated at a temperature of 150-180 °C, in a current of a mixture of hydrogen:nitrogen=1:1 by volume for 2-3 hours, then in a stream of hydrogen for 0.5 hours. Hydrogenation of acetone is carried out at a temperature of 100-195 °C, pressure 20-30 atm, molar ratio hydrogen:acetone=(2-5):1, and hydrogenating gas before mixing with acetone is subjected to precontact preparation at a temperature of 150-250 °C and a pressure of 20-30 atm in the zone of the reactor of precontact preparation filled with the same catalyst.EFFECT: proposed method allows to obtain the target product with a high yield using hydrogen-containing gas with oxygen, olefinic and diene hydrocarbon impurities.1 cl, 3 tbl, 27 ex
Настоящее изобретение относится к способу гидрирования ацетона в изопропиловый спирт, который широко используется в качестве октаноповышающей добавки к бензинам, противообледенительной жидкости, растворителя при производстве поверхностно-активных веществ, пластификаторов, присадок к маслам, медицинских препаратов. Гидрирование осуществляют гидрирующим газом, в качестве которого используют водородсодержащий газ отходящих газов после пиролиза углеводородного сырья и выделения пропилена и этилена, характеризующийся следующим составом и концентрационными пределами компонентов, об.%: водород - 40-90, азот - 7,7-23,5, метан - 27-45, диоксид углерода - до 1, монооксид углерода - до 1,5, примеси олефинов - до 3, диеновых углеводородов - до 2,5, кислорода - до 0, |
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