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126 results about "Alcohol products" patented technology

Pretreatment method and application of aluminum oxide loaded copper oxide-rare earth metal oxide catalyst

The invention discloses a pretreatment method and application of an aluminum oxide loaded copper oxide-rare earth metal oxide catalyst. The pretreatment method comprises the following steps: adding an aluminum oxide loaded copper oxide-rare earth metal oxide catalyst for the reaction of preparing higher alcohol from ethanol into a mixed solution of one or more of C1-C8 alcohols, dipping at 10-90 DEG C for 1-24 hours, filtering to remove redundant alcohols after dipping is completed, and drying in a drying oven at 40-200 DEG C for 1-24 hours to complete the pretreatment of the catalyst. The invention provides the application of the aluminum oxide loaded copper oxide-rare earth metal oxide catalyst treated by the pretreatment method in the reaction of preparing higher alcohol from ethanol. According to the pretreatment method disclosed by the invention, the selectivity of the product higher alcohol is remarkably improved, and the conversion rate of the ethanol is unchanged or slightly improved, so that the problem that the conversion rate and the selectivity are difficult to consider at the same time in the prior art is solved.
Owner:ZHEJIANG UNIV OF TECH

Praseodymium-copper heterogeneous catalyst for synthesizing multi-carbon alcohol product through efficient electroreduction of carbon dioxide and preparation method of praseodymium-copper heterogeneous catalyst

The invention discloses a praseodymium-copper heterogeneous catalyst for synthesizing a multi-carbon alcohol product through efficient electroreduction of carbon dioxide and a preparation method of the praseodymium-copper heterogeneous catalyst. The praseodymium-copper heterogeneous catalyst is a composite material of praseodymium oxide and copper oxide, and praseodymium, copper and oxygen are uniformly distributed in the praseodymium-copper heterogeneous catalyst; the praseodymium oxide is an oxide with the praseodymium-oxygen molar ratio of 6: 11; the molar ratio of praseodymium to copper is not less than 2. The invention provides a method for preparing a multi-carbon alcohol product by electrocatalytic reduction of carbon dioxide, which comprises the following steps: by taking a mercury / mercuric oxide electrode as a reference electrode, a foamed nickel electrode as a counter electrode and a praseodymium-copper heterogeneous catalyst as a working electrode, carrying out electrochemical reduction in a gas diffusion type flowing electrolytic tank to obtain the multi-carbon alcohol product. The praseodymium-copper heterogeneous catalytic material is designed, and the interaction relationship between metal and a carrier and between the metal and the carrier and a reaction intermediate in the catalyst is adjusted by introducing the rare earth element praseodymium, so that the reaction activity and the target product selectivity are improved.
Owner:INST OF CHEM CHINESE ACAD OF SCI

Super-hydrophobic catalyst for catalyzing aqueous phase coupling of ethanol as well as preparation method and application of super-hydrophobic catalyst

The invention discloses a super-hydrophobic catalyst for catalyzing aqueous phase coupling of ethanol as well as a preparation method and application of the super-hydrophobic catalyst, and aims to provide a super-hydrophobic catalyst which can effectively improve the hydrophobic performance of a pure nickel-based catalyst, promote further coupling of low-carbon alcohol to higher alcohol and improve the water phase coupling of ethanol. According to the technical scheme, the preparation method comprises the following steps: adding a nickel-based catalyst and a super-hydrophobic polymer polydivinylbenzene into a ball milling tank according to a mass ratio of 1: (0-4); and carrying out ball milling for 2-10 hours at the rotating speed of 200-600 rpm to obtain the super-hydrophobic catalyst. The catalyst is used for synthesizing high-carbon alcohol from ethanol in a water phase; belongs to the technical field of synthesis.
Owner:GUANGDONG UNIV OF TECH +1

Carbonyl reductase mutant as well as preparation method and application thereof

The invention discloses a carbonyl reductase mutant as well as a preparation method and application thereof, and belongs to the technical field of gene engineering and enzyme engineering. According to the invention, wild-type carbonyl reductase of Stachybotrys chlorohallonata is taken as an evolution template, and a plurality of mutants with catalytic activity, thermal stability and substrate spectrum obviously superior to those of the wild-type carbonyl reductase are obtained through an enzyme engineering technology. The carbonyl reductase mutant can catalyze various prochiral carbonyl compounds to obtain chiral alcohol with high stereoselectivity (ee is greater than 99%). The carbonyl reductase mutant provides a novel, efficient and environment-friendly technical route for industrial production of chiral alcohol products, and has very high industrial application potential.
Owner:PHARMARON NINGBO CO LTD +1

Preparation method of tert-butyl alcohol

The invention discloses a preparation method of tert-butyl alcohol, and relates to the technical field of chemical raw materials. The method comprises the following steps: pretreatment of a catalyst: activating the solid acid catalyst to remove possible impurities and moisture so as to improve the activity and selectivity of the catalyst; hydration reaction: adding the pretreated catalyst into a reaction tower, introducing isobutene gas and water, stirring, and carrying out hydration reaction under the action of the catalyst; and separation and purification: the reacted mixture enters a separator, tert-butyl alcohol and the raw material are separated out, the unreacted raw material isobutene is circulated back to the reaction kettle to continue to participate in the reaction, the separated crude tert-butyl alcohol product enters a rectifying tower to be rectified and purified, and the tert-butyl alcohol product is obtained. Compared with a traditional liquid acid catalyst, the solid acid catalyst has the advantages of being easy to separate, capable of being repeatedly used, small in corrosion to equipment and the like.
Owner:DANDONG KELI CHEM TECH CO LTD

Tool for detecting alcoholic strength of wine product

The utility model discloses a tool for detecting the alcoholic strength of a wine product. The alcoholic strength detection tool for the wine product comprises an alcoholic strength detection mechanism, the alcoholic strength detection mechanism comprises a base, the upper end of the base is fixedly connected with a fixing frame through a screw, the upper end of the interior of the fixing frame is fixedly connected with a servo motor through a bolt, and a threaded lead screw is connected with a moving block in a penetrating mode; by means of the technical scheme, it can be avoided that wine liquid is poured into the positions above the alcohol meter and the thermometer which are covered with residues, inaccurate data of the alcohol meter and the thermometer are prevented, a single pipeline is used for replacing multiple pipelines, the installation space can be saved, and the interior of the container, the alcohol meter and the thermometer can be conveniently washed and cleaned.
Owner:XINJIANG RUITAI QINGLIN LIQUOR CO LTD

Method for preparing secondary alcohol by using Fischer-Tropsch olefin and C5 + secondary alcohol

The invention provides a method for preparing secondary alcohol by using Fischer-Tropsch olefin and C < 5 + > secondary alcohol. The method comprises the following steps: S1, mixing a Fischer-Tropsch olefin raw material and formic acid according to a molar ratio of 1: (0.5-5.0) to obtain a mixed product; s2, introducing the mixed product into a resin catalyst, and carrying out esterification reaction to obtain an ester product; and S3, mixing the ester product with water according to a molar ratio of 1: (1.0-5.0), and carrying out a hydrolysis reaction to obtain the secondary alcohol. According to the method, Fischer-Tropsch olefin is taken as a raw material, formic acid which is easy to recover is introduced as an intermediate substance of reaction, limitation of chemical equilibrium of olefin hydration is broken through, an esterification product is obtained, then hydrolysis reaction is carried out, and a secondary alcohol product is finally prepared with high olefin conversion rate and secondary alcohol selectivity.
Owner:CHINA ENERGY GRP NINGXIA COAL IND CO LTD +1

A fermented mucus lactobacillus YYS-K2 and its application

The present invention relates to the field of microbial technology, and provides a fermented mucus lactobacillus YYS-K2 and an application thereof. The deposit number of the fermented mucus lactobacillus YYS-K2 is CGMCC No.27129. The fermented mucus lactobacillus YYS-K2 can produce ethanol dehydrogenase (ADH), has good ethanol tolerance and degradation ability, can grow in a high-concentration ethanol culture medium, and at the same time, the bacteria has a significant inhibitory effect on α-amylase inhibition, has significant OH and DPPH free radical scavenging ability, and has good reducing ability. The bacteria can provide a new probiotic source for the development of functional products such as hangover products, antioxidant products and weight loss products (α-amylase inhibition functional products), and has important application value.
Owner:XIAMEN YUANZHIDAO BIOTECHNOLOGY CO LTD +1

MTO concentrated water treatment device

The utility model relates to an MTO (Methanol To Olefins) concentrated water treatment device, which comprises a circulating liquid phase hydrogenation unit and a dehydration unit, aldehyde and ketone components in MTO concentrated water are converted into mixed alcohol through circulating liquid phase hydrogenation, and most of water in the mixed alcohol is removed through flash evaporation degassing, azeotropic distillation and zeolite membrane dehydration treatment. According to the MTO concentrated water treatment device, a mixed alcohol product with low water content (about 2wt%) and waste water with low alcohol content (less than 0.2 wt%) are obtained, the technical index of the obtained mixed alcohol product is higher than the national standard of alcohol-based liquid fuel GB16663-1996, and ethanol, isopropanol and 2-butanol products can be obtained through further separation. The additional value is also improved, and the purposes of improving the quality and improving the efficiency are achieved.
Owner:HEFEI JIANGXIN CHEM SCI& TECH CO LTD

Low-alcohol beer-like beverage and method for producing low-alcohol beer-like beverage

The present invention addresses the problem of providing a low-alcohol beer-like beverage that maintains a good flavor for a long period. Provided as a solution to the problem is a low-alcohol beer-like beverage containing a wort fermentation liquid, containing a highly hydrophobic aroma component that has a LogP of 3.0-4.3 at a concentration 150-400 ppb, and having an alcohol concentration of not more than 4 v / v%, wherein: the highly hydrophobic aroma component contains a terpene-based compound and an ester-based compound; the terpene-based compound contains at least one substance selected from the group consisting of linalool and myrcene; the ester-based compound contains ethyl octanoate; and the ratio of the terpene-based compound and the ester-based compound is 0.04-0.2.
Owner:ASAHI GRP HLDG LTD +1

A preparation process of Grignard alcohol

The present invention discloses a preparation process of Grignard alcohol, which uses magnesium and methyl chloride as reaction raw materials, tetrahydrofuran as a solvent, and iodine crystals as an initiator. The Grignard reaction is carried out under nitrogen to generate a Grignard reagent, and then the Grignard reagent reacts with p-chlorobenzophenone by an addition reaction to generate Grignard alcohol. The magnesium includes pre-treated magnesium powder and magnesium strips. By simultaneously using magnesium powder and magnesium strips with specific mass ratios and size ratios and pre-treating them, the present invention can ensure the stable progress of the reaction and improve the reaction yield; in addition, by carrying out the treatment of removing water and peroxides from tetrahydrofuran, while ensuring the process safety, the yield of the Grignard alcohol product can be further improved.
Owner:JIANGXI DONGFU PHARMA CO LTD

Alcohol product dehydrogenation separation device

The utility model discloses an alcohol product dehydrogenation separation device which comprises a reaction kettle, a sliding groove is formed in the inner side surface of the reaction kettle, a driving motor is fixedly connected to the top end of the interior of the sliding groove, the output end of the driving motor is in transmission connection with a threaded lead screw, the surface of the threaded lead screw is in threaded connection with a sliding block, and the sliding block is in threaded connection with the sliding groove. Through the structures such as the driving motor and the threaded screw rod, when alcohol products are dehydrogenated and separated, the threaded screw rod is driven by the driving motor to rotate, so that the sliding block descends, the electric heating rod is driven to descend to the lowest end of the reaction kettle, the reaction is heated by the electric heating rod, and after the reaction is completed, the alcohol products are separated. When the electric heating bar needs to be cleaned, the sealing cover is taken down, the threaded lead screw is driven by the driving motor to rotate, the sliding block is made to ascend to the highest end, then the electric heating bar is rotated through the rotating shaft, the electric heating bar is made to be located outside the reaction kettle, and the electric heating bar is cleaned in a flushing or wiping mode.
Owner:NINGXIA RUIYUAN FINE CHEM CO LTD

Wine Box (Shiwen, Huadian)

ActiveCN309262075SBiotechnologyEngineering
1. The name of the product of this design: wine box (Shiwen, Huadian). 2. Purpose of this design product: used for packaging boxes of alcoholic products. 3. The design key point of this appearance design product lies in the combination of shape and pattern. 4. The picture or photo that best illustrates the key points of the design: Main view of Design 1. 5. Designate Design 1 as the base design.
Owner:SHANXI XINGHUACUN FENJIU WINE FACTORY

Wine Bottle

ActiveCN309098122SWine bottleEngineering
1. The name of the product under this design: wine bottle. 2. Purpose of this design product: packaging bottles for alcoholic products. 3. The design key point of this appearance design product lies in the combination of shape and pattern. 4. The picture or photo that best illustrates the key points of the design: main view.
Owner:GUIZHOU RENHUAI MAOTAI GUZHEN LIQUOR CO LTD

Composite catalyst as well as preparation method and application thereof

The invention relates to a composite catalyst and a preparation method thereof. The composite catalyst can be used for promoting long-chain alpha-olefin and a synthesis gas raw material to be subjected to continuous hydroformylation-hydrogenation reaction in one step to obtain a high-carbon alcohol product. Derived cobalt and graphite-phase carbon nitride in different proportions are compounded, the electronic effect is regulated and controlled, a high-dispersion and high-activity catalytic center is formed, and the composition of a product is effectively changed. The scheme provided by the invention has the advantages of simple preparation, controllable product, high alcohol selectivity and the like, and has a large-scale application and popularization prospect.
Owner:NINGXIA UNIVERSITY

Rosa roxburghii hangover-alleviating beverage and preparation method thereof

The invention belongs to the technical field of functional beverage preparation, and particularly relates to a rosa roxburghii hangover-alleviating beverage and a preparation method thereof.The rosa roxburghii hangover-alleviating beverage is prepared from, on the basis of 100 ml of beverage as the metering standard, 99 ml of rosa roxburghii juice, 20 g of glucose, 0.15 g of B vitamins, 0.15 g of succinic acid, 0.1 g of fumaric acid, 0.1 g of mercaptoalanine, 0.1 g of farnesic acid, 0.18 g of glutamic acid and the balance water. The rosa roxburghii tratt juice production investment and production cost are low, rosa roxburghii tratt nutritional ingredients can be better utilized, and meanwhile, compared with existing anti-alcohol products, the prepared rosa roxburghii tratt anti-alcohol beverage has more beneficial ingredients, is healthier and has a better anti-alcohol effect.
Owner:陈家胜

A process for preparing a product from a carbon-containing gas stream by microorganisms provided on a plurality of trays

The present invention provides a process and apparatus for producing an alcohol product stream from a gas fermentation process. A feed gas stream comprising hydrogen and a carbon oxide is subjected to fermentation to convert at least a portion of the feed gas stream to an alcohol. Fermentation is conducted in a reactor having a plurality of trays.
Owner:SHELL USA INC +1

A method for directly converting synthesis gas into polyols

The present invention provides a method for synthesizing polyols with high selectivity from synthesis gas, wherein the method comprises the following steps: the method comprises the following steps: the method comprises the following steps: the method comprises the following steps: cat ), under the reaction conditions of H2 / CO molar ratio of 0.5 to 10.0, a high-selectivity synthesis of polyols from syngas occurs under the action of an iron-based catalyst. The iron-based catalyst is composed of active metal compounds Fe5C2, Fe2C and Fe3O4. In the method, syngas can be highly selectively converted to generate polyols at 150-210°C, the selectivity of polyols can be controlled to be above 40%, and polyols can account for more than 70% of the alcohol products. The present invention opens up a new route for the high-selectivity conversion of syngas into polyols.
Owner:DALIAN INSTITUTE OF CHEMICAL PHYSICS CHINESE ACADEMY OF SCIENCES

Method for extracting and recovering sec-octanol from tantalum-niobium acid wastewater

The invention discloses a method for extracting and recovering sec-octanol from tantalum-niobium acid wastewater, the tantalum-niobium acid wastewater is acid wastewater generated in the process of extracting tantalum and niobium by using sec-octanol, and the method comprises the following steps: S1, dilution: uniformly mixing odorless kerosene and n-dodecane according to a certain proportion to obtain diluted n-dodecane; s2, extraction: adding the diluted n-dodecane obtained in S1 into the tantalum-niobium acid wastewater to extract the sec-octanol to obtain raffinate and an organic phase containing the sec-octanol, and performing centralized treatment on the raffinate; s3, distillation: distilling the organic phase containing the sec-octanol obtained in the S2 to obtain a sec-octanol product and diluted n-dodecane, and recycling the diluted n-dodecane in the S2. According to the method disclosed by the invention, short-range purification of the sec-octyl alcohol in the acid wastewater and cyclic utilization of n-dodecane are realized, meanwhile, the problem that the taste of the acid wastewater is strong is solved, and resource circulation and high-value utilization of the sec-octyl alcohol are realized. The method has the characteristics of environmental friendliness, high resource utilization rate and simple and feasible process.
Owner:JIANGXI SMART KEGU LOW CARBON TECHNOLOGY CO LTD

Method and device for preparing alcohol by liquid-phase hydrogenation of mixed aldehyde

The invention relates to the technical field of petrochemical engineering, in particular to a method and a device for preparing alcohol through liquid-phase hydrogenation of mixed aldehyde. The method comprises the following steps: mixed aldehyde and hydrogen are subjected to a first liquid phase hydrogenation reaction, and an obtained first hydrogenation product is partially circulated to a raw material inlet of the first liquid phase hydrogenation reaction to be mixed with the mixed aldehyde and the hydrogen; and performing a second liquid phase hydrogenation reaction on the residual first hydrogenation product and hydrogen, partially circulating the obtained second hydrogenation product to a raw material inlet of the second liquid phase hydrogenation reaction to be mixed with the first hydrogenation product and the hydrogen, and discharging the residual second hydrogenation product as a crude alcohol product. According to the method, the mixed aldehyde is subjected to two-step liquid phase hydrogenation, and the liquid phase hydrogenation conditions are controlled in a segmented manner, so that the content of high-boiling residues in the product can be effectively reduced, the loss of the aldehyde is reduced, and the yield of the product alcohol is improved.
Owner:CHINA NAT OFFSHORE OIL CORP +2

Methods for producing higher alcohols from waste plastic pyrolysis oil and the higher alcohols obtained therefrom

A method for producing a higher alcohol from a waste plastic feedstock is disclosed, comprising: (a) providing a hydrocarbon feed stream comprising a pyrolysis oil feed obtained from pyrolysis of plastic waste, wherein the pyrolysis oil comprises at least 20 wt % higher olefins with a carbon number in the range C5-C20, based on its total hydrocarbon content; (b) contacting the hydrocarbon feed stream with synthesis gas under hydroformylation conditions in the presence of a hydroformylation catalyst and recovering a hydroformylation product; (c) subjecting the hydroformylation product to hydrogenation and / or a distillation to recover a higher alcohol product.
Owner:EXXONMOBIL CHEMICAL PATENTS INC

A copper-based catalyst, its preparation method, and a method for synthesizing polyols from CO2 / CO

PendingCN122629515APtru catalystPolyol
The application belongs to the technical field of catalysts, and particularly relates to a copper-based catalyst, a preparation method thereof and a method for synthesizing polycarbon alcohol from CO2 / CO. The preparation method of the copper-based catalyst provided by the application comprises the following steps: loading a copper nanoparticle solution into a high-pressure reaction kettle with a stirring rotor, first performing gas washing treatment by using high-purity CO gas, then filling CO, sealing the high-pressure kettle and transferring the high-pressure kettle to a heating container, performing reaction under stirring and heat preservation, performing pressure relief to normal pressure after the reaction, and performing centrifugal separation and drying treatment to obtain copper nanobands. The method adopts CO to assist in growing the copper-based catalyst, and widens the catalyst system for synthesizing polycarbon alcohol products.
Owner:HUANENG CLEAN ENERGY RES INST

A Ni-Bi bimetallic catalyst and its application in catalyzing the one-step synthesis of high-carbon alcohols from ethanol

The present invention belongs to the technical field of organic synthesis, and in particular to a Ni-Bi bimetallic catalyst and its catalytic one-step synthesis of higher alcohols from ethanol. In order to develop a catalyst capable of improving the yield of C6+ higher alcohols, the present invention provides a Ni-Bi bimetallic catalyst and a preparation method thereof, wherein NiBi is alloyed by introducing bismuth atoms, so that the arrangement of atoms on the nickel surface is reconstructed, the metal Ni electronic environment is regulated, and then the catalytic performance of the catalyst Ni active center is regulated, so that the Ni-Bi bimetallic catalyst has high load, low particle size, and high directional reaction activity for higher alcohols, and is applied in the reaction of catalytic one-step synthesis of higher alcohols from ethanol, showing excellent catalytic efficiency, high reaction activity and high selectivity for high-value C6+ higher alcohol products. In addition, the present invention is simple to prepare, low in cost, and more conducive to its production application.
Owner:GUANGDONG UNIV OF TECH

Wine bottles (6)

ActiveCN309286281SWine bottleEngineering
1. Name of the product of this design: wine bottle (6). 2. Purpose of this design product: used for packaging of alcoholic products. 3. The design key point of this appearance design product lies in the shape. 4. The picture or photo that best illustrates the key points of the design: main view.
Owner:YANTAI GISBELLE WINE

A device and process for switchable production of fine methyl acetate or acetic acid and methanol products

The application discloses a device capable of switching production of refined methyl acetate or acetate and methyl alcohol products, which comprises a fourth rectifying tower capable of switching for separating an aqueous solution of acetate or for rectifying and extracting crude methyl acetate, an eighth rectifying tower capable of switching for removing low-boiling impurities or for evaporating and purifying an extractant and a first rectifying tower capable of switching for extractive rectification of methyl acetate or for removing light components; the fourth rectifying tower is connected with the first rectifying tower, a fifth rectifying tower for refining acetate and a decomposition tower for hydrolyzing methyl acetate respectively; the first rectifying tower is connected with a second rectifying tower for purifying methyl alcohol and a third rectifying tower for removing light components again respectively, and the third rectifying tower is connected with a seventh rectifying tower for removing light components for the third time. The device has two functions, i.e. production of acetate, methyl alcohol and refined methyl acetate can be adjusted in time according to market conditions.
Owner:CHINA PETROLEUM & CHEMICAL CORP +1

Biological resourceful treatment method and system for brine discharge wastewater of retired lithium battery

The invention relates to a biological resourceful treatment method and system for decommissioned lithium battery brine discharge wastewater, and the method comprises the following steps: (1) dividing the pretreated decommissioned lithium battery brine discharge wastewater into a first part of wastewater and a second part of wastewater, inoculating the first part of wastewater with a pre-domesticated salt-tolerant functional flora, hydrolyzing and fermenting organic components to generate fermentation liquor containing short-chain carboxylic acid; and (2) mixing the fermentation liquor with a second part of wastewater, and carrying out carbon chain extension reaction to generate treatment liquor containing medium-chain carboxylic acid and long-chain alcohol products. According to the method, the special pollutant composition and the high-salt characteristic of the discharge wastewater are utilized, the methanogenesis process is inhibited without using expensive chemical agents or treating inoculums at a high temperature and the like, electron donors such as ethanol or lactic acid and the like do not need to be additionally added, the agent or energy consumption cost in the process is greatly reduced while the organic pollutants in the wastewater are subjected to high-value conversion, and the method is suitable for industrial production. The method has the remarkable advantages of simple operation, green process, low cost and the like.
Owner:INSTITUTE OF PROCESS ENGINEERING CHINESE ACADEMY OF SCIENCES

Method for treating mto concentrate water

PendingCN122647037AAlcohol contentFluid phase
The present application relates to a kind of MTO concentrated water processing method, the processing device relied on includes circulating liquid phase hydrogenation unit and dehydration unit, and MTO concentrated water is converted into mixed alcohol by circulating liquid phase hydrogenation in aldehyde, ketone component in it, again by flash evaporation degassing, azeotropic rectification and zeolite membrane dehydration treatment, water in mixed alcohol is mostly removed, obtain low water content (about 2wt%) mixed alcohol product and low alcohol content (<0.2wt%) waste water, the technical index of obtained mixed alcohol product is higher than national standard "alcohol-based liquid fuel GB16663-1996", and further separation can obtain ethanol, isopropanol and 2-butanol product, the processing method of the present application not only solves the problem of MTO concentrated water processing, but also improves its added value, to the purpose of quality improvement and efficiency.
Owner:HEFEI JIANGXIN CHEM SCI& TECH CO LTD

A system and method for repairing alcohol compositions, and repaired alcohol products.

The present invention provides a system and method for removing ethyl acetate from an alcohol composition. [Solution] A system for removing ethyl acetate from an alcohol composition is provided, comprising: a pressure tank 25 defining a pressure-controllable chamber; a liquid inlet port 30 fluidly communicating with the pressure-controllable chamber and configured to receive a certain amount of alcohol composition in the pressure-controllable chamber; a gas outlet port fluidly communicating with the pressure-controllable chamber; a vacuum pump fluidly communicating with the gas outlet port; and a controller configured to operate the vacuum pump to establish a partial pressure in the pressure-controllable chamber for a selected time, and to preferentially remove ethyl acetate from the alcohol composition relative to other homologs in the homologous group to obtain a purified alcohol composition.
Owner:TRUE ESSENCE FOODS INC

Continuous extractive distillation separation method of p-xylene-propanol azeotropic mixture

The invention provides a continuous extractive distillation separation method of a p-xylene-propanol azeotropic mixture, and belongs to the technical field of separation. According to the method disclosed by the invention, any two of dibutyl phthalate, N-methyl pyrrolidone and sulfolane are used as extracting agents. The method comprises the following steps: adding a mixed raw material solution of p-xylene and propanol into an extraction tower, then adding an extraction agent, carrying out extractive distillation, extracting a propanol product from the top of the tower, introducing an extraction tower bottom product containing the extraction agent and p-xylene into a solvent recovery tower, and after distillation, extracting a p-xylene product from the top of the tower and discharging the extraction agent from the bottom of the solvent recovery tower; and introducing the extraction agent into the extraction tower for cyclic utilization. The method provided by the invention realizes the separation of the p-xylene-propanol azeotropic mixture, has high separation efficiency, is easy to regenerate and is environment-friendly, and the mass fraction of p-xylene in the separated propanol can be greater than or equal to 99.9%.
Owner:SINOMA INT ENVIRONMENTAL ENG (BEIJING) CO LTD