3 cat·h; - strengthening of the oxidate (synthesis reaction mass) which is raw glyoxal through vacuum stripping at temperature not above 52°C and residual pressure of 100 mm Hg to obtain commercial grade product containing 40 ± 1.5 or 30 ± 0.8 wt % glyoxal.;EFFECT: proposed method can be used in industrial production.;2 dwg"/> DEVELOPING TECHNOLOGIES INDUSTRIAL SYNTHESIS OF glyoxal mono ethylene glycol (EG) using SEREBRONANESENNOGO on silica-alumina catalyst with the possibility FURTHER MODIFICATION
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首页> 外国专利> DEVELOPING TECHNOLOGIES INDUSTRIAL SYNTHESIS OF glyoxal mono ethylene glycol (EG) using SEREBRONANESENNOGO on silica-alumina catalyst with the possibility FURTHER MODIFICATION

DEVELOPING TECHNOLOGIES INDUSTRIAL SYNTHESIS OF glyoxal mono ethylene glycol (EG) using SEREBRONANESENNOGO on silica-alumina catalyst with the possibility FURTHER MODIFICATION

机译：发展技术在二氧化硅-氧化铝催化剂上使用SEREBRONANESENNOGO工业合成乙二醛单乙二醇（EG）的可能性

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FIELD: chemistry.;SUBSTANCE: present invention relates to a method for synthesis of glyoxal in form of an aqueous solution containing 40 ± 1.5 or 30 ± 0.8 wt % glyoxal which can be used as an emulsifier, bacterial inhibitor, flocculant, preservative, solvent etc. The method involves oxidative dehydrogenation of monoethylene glycol on a domestically produced industrial silver catalyst deposited on aluminosilicate, containing 32-36 wt % silver of the D-53M type, and involves the following successive steps: preparation of a 40-50 wt % aqueous solution of monoethylene glycol on distilled water or steam condensate; preparation of initial reaction mixture by mixing air or nitrogen-air mass, heated in an electrical heater to 260°C or above, and a water-glycol vapour phase obtained in an evaporator and superheated in a "hardening" apparatus using heat of the oxidation reaction mass, taken in respective molar ratios: monoethylene glycol O2=1.0:1.0-1.1; monoethylene glycol: N2=1.0:4.36-7.0; - synthesis of glyoxal in a single- or multiple-shell reactor operating in adiabatic mode, on a catalyst layer at temperature 540-620°C, atmospheric pressure and specific input of ethylene glycol of 1.70-2.3 g/cm3 cat·h; - strengthening of the oxidate (synthesis reaction mass) which is raw glyoxal through vacuum stripping at temperature not above 52°C and residual pressure of 100 mm Hg to obtain commercial grade product containing 40 ± 1.5 or 30 ± 0.8 wt % glyoxal.;EFFECT: proposed method can be used in industrial production.;2 dwg
机译：乙二醛的合成方法技术领域本发明涉及一种以包含40±1.5或30±0.8wt％乙二醛的水溶液形式的乙二醛的合成方法，其可以用作乳化剂，细菌抑制剂，絮凝剂，防腐剂，溶剂。该方法包括在沉积在硅铝酸盐上的，含有32-36重量％的D-53M型银的国产工业银催化剂上单乙二醇的氧化脱氢，并且涉及以下连续步骤：制备40-50重量％单乙二醇在蒸馏水或蒸汽冷凝液上的水溶液;通过混合空气或氮气，在电加热器中加热到260°C或更高，以及在蒸发器中获得并在“硬化”设备中使用氧化热进行过热的水乙二醇蒸气相来制备初始反应混合物反应质量，以各自的摩尔比计：单乙二醇O 2 ＝ 1.0∶1.0-1.1;一乙二醇：N2 = 1.0：4.36-7.0; -在绝热模式下在单壳或多壳反应器中，在温度为540-620°C，大气压和1.70-2.3 g / cm 3的乙二醇的特定输入下的催化剂层上合成乙二醛。 / Sup> cat·h; -通过在不高于52°C的温度和100 mm Hg的残留压力下进行真空汽提来强化粗乙二醛的氧化物（合成反应物料），从而获得含有40±1.5或30±0.8 wt％乙二醛的工业级产品。 ：建议的方法可用于工业生产。; 2 dwg

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