METHOD OF PRODUCING CERAMIC HIGHLY POROUS BLOCK-CELLULAR MATERIALS

FIELD: ceramic industry.SUBSTANCE: invention relates to chemical engineering of ceramic highly porous cellular materials - catalyst supports, sorbents and other mass exchange devices and is intended for use in chemical, petrochemical, nuclear industries, metallurgy, energy and transport, as well as...

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Hauptverfasser: EROKHIN SERGEJ NIKOLAEVICH, POSTERNAK NIKOLAJ VLADIMIROVICH, ZAJTSEVA LADA ALEKSEEVNA, GASPARYAN MIKAEL DAVIDOVICH, BESPALOV ALEKSANDR VALENTINOVICH, POPOVA NELLYA ALEKSANDROVNA, GRUNSKIJ VLADIMIR NIKOLAEVICH, FERAPONTOV YURIJ ANATOLEVICH
Format: Patent
Sprache:eng ; rus
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Zusammenfassung:FIELD: ceramic industry.SUBSTANCE: invention relates to chemical engineering of ceramic highly porous cellular materials - catalyst supports, sorbents and other mass exchange devices and is intended for use in chemical, petrochemical, nuclear industries, metallurgy, energy and transport, as well as to solve environmental problems of cleaning gas and liquid media from hazardous substances. Method for producing highly porous ceramic block of cellular material includes impregnating a polyurethane matrix mesh slip structure, consisting of excipient - electrofusion corundum, particulate powder high-alumina porcelain mass and hardening additives, drying, calcination and impregnation coating method followed by calcination of active composition. Active composition is applied as a slurry with a mass ratio of solid to liquid phase of 40÷50/60÷50%, solid phase is prepared by mixing with kaolin or zeolite NTSVM NHCVM pentasil type at a ratio of 10÷19/90÷81 wt%, and liquid phase is distilled water. After application of each layer of active composition material is dried at 80÷90 °C for 2÷8 hours, and after application of last layer is heat treated in medium of water vapour with flow rate of 100-400 g/h at a temperature of 760÷800 °C for not less than 1 hour.EFFECT: technical result of invention is increase in specific surface area of hydrophobic zeolite active layer to 420-460 m/g and increased sorption capacity for organic compounds (10/100-12/100 g/cmfor toluene vapour) while minimising sorption capacity for water (1/100 g/cm) under dynamic conditions at p/p= 1/10, based on active layer, that allows use of highly porous materials obtained in a wet environment.1 cl, 3 ex Изобретение относится к области химической технологии керамических высокопористых ячеистых материалов-носителей катализаторов, сорбентов и других массообменных устройств и предназначено для использования в технологических процессах химической, нефтехимической, атомной отраслей, металлургии, энергетики и транспорта, а также при решении экологических проблем по очистке газовых и жидких сред от вредных веществ. Способ получения керамических высокопористых блочно-ячеистых материалов включает пропитку полиуретановой матрицы ячеистой структуры шликером, состоящим из инертного наполнителя - электроплавленного корунда, дисперсного порошка высокоглиноземистой фарфоровой массы и упрочняющей добавки, сушку, обжиг и нанесение методом пропитки с последующим прокаливанием активной композиции. Активную композицию нан