PROBLEM TO BE SOLVED: To provide a water-alcohol separation system and a water-alcohol separation method for producing highly pure alcohol, which achieves energy saving as a whole process. A plurality of separation membrane modules connected in series, A decompression device for decompressing the ...
This paper introduces some methods that separate azeotropic water/IPA mixtures, which not only includes traditional azeotropic distillation,but also includes some new technologies,such as:adsorptive distillation,extraction distillation,pervaporization,adding salt extraction-azeotropic distillation and distillation-...
Graphene oxide (GO) membranes have been investigated as very promising candidates for water filtration and/or separation membranes [1], [2]. Recently, experimental evidence has shown that in the aqueous phase, water molecules can permeate through GO membranes while blocking the passage of ions [3...
Methods: Oral liquid was made by steam distillation, alcohol abstraction method, water abstraction and alcohol precipitation. 方法:分别采用水蒸气蒸馏法、醇提法、水提醇沉法制成口服液; www.chemyq.com 4. Crude polysaccharides were prepared from powered Spirulina platensis by hot water extraction, alcohol...
Method for separation and recovery of propargyl alcohol The present invention provides a method for separating and recovering propargyl alcohol from a product mixture containing a solvent, water and propargyl alcohol, which alleviates the problems of prior art and which can separate and recov... H ...
PVA (polyvinyl alcohol)-based water-containing gel having a large difference in the amount of adsorption of an organic material between at a lower and higher temperature than its phase transition temperature, an adsorptive separating agent consisting of the same and a method of adsorptive separation...
Hydrogen transfer biocatalysts to prepare optically pure alcohols are in need, especially when it comes to sterically demanding ketones, whereof the bioreduced products are either essential precursors of pharmaceutically relevant compounds or constitute
which form a different azeotrope mixture with ethanol and water. Distillation of this mixture eventually yields absolute alcohol, which contains <1% water and trace amounts of the separation agent. Absolute alcohol is not intended for human consumption. It is mainly used as solvent for laboratory ...
Alcohol-free beer - a new method of production. FIELD: organic chemistry, beer. SUBSTANCE: method implies production of must at the first stage by mixing of brewing water, hop and carbohydrate source. At the second stage must is boiled and at the third stage must is fermented, before,......
METHOD OF PURIFYING METHYL-ISOBUTYLCARBINOL BY AZEOTROPIC DISTILLATION WITH WATER Methyl-isobutyl carbinol containing mesityl oxide as impurity is purified by fractionally distilling the crude carbinol with introduction of water into the distillation system so that the mesityl oxide is distilled off. Prefera...