Mixed solvent based on the fusel oil

 

(57) Abstract:

The invention relates to the production of mixed solvent on the basis of fusel oil, which is the waste product of ethanol from starch-containing raw material containing an alcohol component, using the esterification reaction of an alcohol components of fusel oil with acetic acid in the presence of a catalyst is sulfuric acid using all included in fusel oil components. When this mixed solvent has the following composition, wt. %: acetate esters (ethyl acetate, propyl, isobutyl acetate, isoamylase) 69,7 - 79,1; aliphatic alcohols (ethanol, propanol, Isobutanol, isoamyl) 19,1 - 29,2; impurity fusel oil of 1.1 to 1.8. The result is a mixed solvent which has good solvent properties. table 2.

The invention relates to the alcohol industry, and in particular to methods of disposing of waste generated during the production of alcohol from starch-containing raw materials.

The technical problem of the invention is to obtain a mixed solvent of fusel oil, which is a waste product of the food ethyl alcohol, using all of the included components is istihaada fact, what a mixed solvent of fusel oil, which is the waste product of ethanol from starch-containing raw materials, using all of its components of the following composition, wt.%:

Esters of acetate type (ethyl acetate, propyl, isobutyl acetate, isoamylase) - 69,7 - 79,1

Aliphatic alcohols (ethanol, propanol, Isobutanol, isoamyl) - 19,1 - 29,2

Impurities fusel oil - 1,1 - 1,8

get the esterification reaction, in which the alcohol components used fusel oil.

The technical result is expressed in getting ready to use a mixed solvent of fusel oil with all of its constituent components. The solvent has good solvent properties and low cost.

Esters included in the mixed solvent is a good solvent of the film-forming materials, and aliphatic alcohols in a mixture with impurities fusel oil diluents.

Impurities fusel oil included in the composition of the mixed solvent: oil, propionic, valeric acid; izovalerianovoy, isovalerianic esters, ethylformate reaction of esterification consists of the following stages /Lebedev N. N. Chemistry and technology of basic organic and petrochemical synthesis. - M.: Chemistry, 1981/.

1. Spend the reaction of esterification of fusel oil with acetic acid in the presence of concentrated sulfuric acid;

2. Received apiospermum mixture is neutralized;

3. Apiospermum mixture is subjected to azeotropic dehydration;

4. Carry out simple distillation of the mixed solvent.

The method of obtaining the mixed solvent is illustrated by the following examples.

Example 1.

In the reactor load of 26.4 wt.% acetic acid and 0.2 wt.% concentrated sulfuric acid. The mixture is heated to 95oC and add 73,4 wt.% pre-warmed to 40oC fusel oil. The reaction of esterification of fusel oil with acetic acid is conducted for three hours at 95oC. Next, the resulting ether-alcohol mixture is neutralized, is subjected to azeotropic dehydration and distilled at a temperature of 140oC.

Example 2.

Charged to the reactor to 20.9 wt.% acetic acid and 0.2 wt.% concentrated sulfuric acid. The mixture is heated to 95oC and add to 78.9% wt.% pre-warmed to 40oC fusel oil. The rest is as in example 1.

Examples 1-3 are given in table. 1.

The composition of the mixed solvent obtained in examples 1-3 shown in table. 2.

As can be seen from the table. 1-2, when the content in the initial mixture by 73.4 wt.% fusel oil and 26.4 wt.% acetic acid mixed solvent of example 1 contains in comparison with other examples, fewer esters acetate type (69,7 wt.%) and the greatest number of aliphatic alcohols (29,2 wt. %). This gives the resulting mixed solvent properties of the diluent.

When the content in the initial mixture to 78.9% wt.% fusel oil and 20.9 wt.% acetic acid mixed solvent according to example 2 contains 75,0 wt.% esters of acetate type and 23.5 wt.% aliphatic alcohols. This gives the resulting mixed solvent along with the properties of the solvent and good solvent properties.

When the content in the initial mixture 84,4 wt.% fusel oil and 15.4 wt.% acetic acid mixed solvent according to example 3 is compared with other examples of the greatest number of esters of acetate type /7 is Ely excellent solvent properties.

Thus, the proposed method of obtaining a mixed solvent gives the opportunity to:

1. Dispose of fusel oil, which is the waste product of ethanol from starch-containing raw materials;

2. To obtain a mixed solvent with good solubility, low cost and wide application in the paint industry;

3. To vary the properties of the mixed solvent. So, with the increasing content of fusel oil in the mixture increases the amount of acetate esters of the type in the mixed solvent. This gives the resulting mixed solvent of a good solvent properties. On the other hand, with the increasing content of acetic acid in the mixture increases the content of aliphatic alcohols, which gives the resulting mixed solvent properties of the diluent;

4. Mixed solvent is a clear, colorless, without visible inclusions liquid with a pleasant fruity smell, stable during storage, harmless, eco-friendly.

Analogs of the invention are not detected.

Mixed solvent on the basis of fusel oil, which is the waste product of ethanol revoy components of fusel oil acetic acid in the presence of catalyst sulfuric acid using all included in fusel oil components, when mixed solvent has the following composition, wt.%:

Esters of acetate type (ethyl acetate, propyl, isobutyl acetate, isoamylase) - 69,7 - 79,1

Aliphatic alcohols (ethanol, propanol, Isobutanol, isoamyl) - 19,1 - 29,2

Impurities fusel oil - 1,1 - 1,8 do

 

Same patents:

The invention relates to a method of obtaining a product in the liquid carbonylation reaction mixture, in particular relates to a method of regeneration of the carbonylation product from a liquid reaction mixture of the carbonyl process, containing a catalyst of the free or bound for iridium carbonylation
The invention relates to a method for producing n-butyl acetate (NBA) by the esterification of n-butyl alcohol (CHD acetic acid (CA)

The invention relates to a fragrant substances, namely 2,4-diethylacrylamide formula I

CHCH0CH3as a component of perfume compositions
The invention relates to the field of organic chemistry, more specifically to a method of obtaining methylenediamine, which are used as plasticizing agents for polyformaldehyde and antifungal agents
The invention relates to a method for producing esters of fatty acids lower monohydroxy n-alcohols by transesterification of glycerides of fatty acids in the presence of basic catalysts

The invention relates to the field of esters of unsaturated acids, particularly to a method of obtaining alilovic esters of 3,3-dimethylpentan-4-OIC acid of General formula

CH2=CHC(CH3)2CH2CO2R (1), where R is alkyl WITH1-C2

The invention relates to a method for producing esters of fatty acids and/or mixtures of esters of fatty acids lower monohydroxy alcohols with 1-5 C-atoms by the interaction of glycerides of fatty acids with lower alcohols in the presence of basic catalysts

The invention relates to organic chemistry, specifically to a method for producing 2,6-directrories stabilizer (pentaerithrityl-[-(3,5-ditretbutyl-4 oksifenil)] -propionate), which can find application in the polymer industry and agriculture

The invention relates to a method for obtaining complex diesters of alkyl substituted 4-hydroxy-piperidino connection of some complex organic esters, in particular to a method for producing a complex of diesters of alkyl-substituted 4-hydroxy-piperidino compounds of esters of dicarboxylic acids using a catalyst system containing the basic inorganic compound and a polar aprotic organic compound

The invention relates to a method of purification of crude alcohol used in pharmaceutical, food and other industries

-phenethyl alcohols" target="_blank">

The invention relates to the technology of organic synthesis, namely the way the joint production of ethyl and-phenethyl alcohols

The invention relates to methods for processing mixtures of ethanol and water to remove impurities

The invention relates to an improved method for producing acetic acid, which is widely used in chemical, textile and food industry

The invention relates to the field of technology organic chemistry, and in particular to methods of cleaning ethyl synthetic industrial alcohol from impurities of aldehydes and ketones

The invention relates to the field of petrochemical synthesis, and can be used when cleaning ethyl alcohol obtained by the hydration of ethylene

The invention relates to a method of purification of ethanol from carbonyl impurities by treating it with a chemical reagent, rectification and can be used in the production of ethyl alcohol and in the processes of organic synthesis, which uses ethyl alcohol

The invention relates to a method of purifying ethyl alcohol, which finds wide application in the electrical industry and as a solvent when carrying out optical measurements

FIELD: distillery industry; production of a dehydrated ethyl alcohol.

SUBSTANCE: the invention is pertaining to the field of distillery industry, in particular, to the methods of production of a dehydrated ethyl alcohol. The method provides for concentration of the water-alcohol solution purified from impurities by a rectification, its dehydration by adsorption through the molecular sieves and its regeneration by a desorption. Concentration of the water-alcohol solution and its dehydration by adsorption are conducted at the pressure of 105-350 kPa. A part of the formed during the concentration vapors is once more heated up to the temperature of 96-150°C and feed to the stage of desorption, which is realized at the pressure of 5-60 kPa. The rest part of the vapor from the stage of adsorption and a desorption is subjected to condensation and the water-alcohol liquid is fed to the stage of the alcohol concentration with withdrawal of the water from the process. The invention allows to intensify the process of dehydration and to reduce consumption of the heat-power input.

EFFECT: the invention allows to intensify the process of dehydration and to reduce the heat and power inputs.

1 tbl

FIELD: method for production of alcohol-containing solvents based on waste from ethanol production from food-grade raw materials.

SUBSTANCE: claimed method includes reprocessing of etheraldehyde fraction of concentrate containing ethanol main admixtures from starch- and/or sugar-containing raw materials. Process is carried out in rectifier at vapor phase temperature in still of 60-90°C. Nitrosolvent is obtained by mixture sampling at 60-70°C. Degreasing solvent is obtained by mixture sampling at starting temperature in column top of 73°C or more when ethers are detected in distillate. Claimed nitrosolvent (degreasing solvent) contain (mass %): acetate-type ethers 10-30 (0.8-2.9); aliphatic alcohols 51-74 (87-89); acetaldehyde 5-9 (0.2-1.5), and water 8-10 (8-10).

EFFECT: simplified and economy method for reprocessing of waste from ethanol production; enhanced assortment of alcohol-containing solvents.

3 cl, 1 dwg, 3 ex, 3 tbl

FIELD: alcohol production.

SUBSTANCE: method comprises direct distillation of concentrate of top ethyl alcohol impurities or rectification of intermediate ethyl alcohol fraction in presence of an alkali agent selected from sodium and potassium oxide, carbonate, and bicarbonate hydrates, and aqueous ammonia in case of top ethyl alcohol impurities processing and selected from sodium and potassium oxide, carbonate, and bicarbonate hydrates, calcium oxide, and aqueous ammonia in case of intermediate ethyl alcohol fraction rectification at alkali agent concentration 0.01 to 3.0 wt % and vat temperature 80-86°C. Desired processing product is commonly used as a binary mixture component and vat residue obtained in distillation and rectification operation is commonly used as additional component of fuel oil.

EFFECT: achieved wasteless processing of alcohol production wastes and utilization of all processing products.

6 cl

FIELD: industrial organic synthesis and chemical engineering .

SUBSTANCE: invention relates to a process of producing liquid oxygenates, including methanol, C2-C4-alcohols, formaldehyde, lower organic acids, or mixtures thereof, and to installation for implementation the process. Process comprises successively supplying natural gas from complex gas preparation plant to a series of "gas-gas" heat exchangers and into annular space of at least one tubular reaction zone of reactor, wherein natural gas is heated to temperature of the beginning of reaction, whereupon heated gas is passed to the entry of the tubular reaction zone mixer, into which compressed air or oxygen is also injected to provide gas-phase oxidation in reaction zone of reactor. Resulting reaction mixture is discharged from reactor into a series of "gas-liquid" and "gas-gas" heat exchangers, wherein reaction mixture is cooled to ambient temperature and sent to separator, wherefrom liquid phase is passed through lower carboxylic acid recovery vessel to the system of rectification columns to isolate the rest of mixture components, whereas leaving gas is recycled to complex gas preparation plant. More specifically, oxidation is carried out within temperature range 240 to 450°C and pressure from 2 to 10 MPa at residence time of reaction mixture in reactor 2-6 sec and oxidant concentration 2 to 15 wt %. In reactor having mixers hollow and at least one tubular reaction zones, required temperature is maintained constant throughout all length of tubular reaction zone and at entries for compressed air or oxygen in mixers of each of tubular reaction zones and hollow reaction zone. Liquid oxygenate production plant is composed of aforesaid complex gas preparation plant, a series of "gas-gas" heat exchanger to heat natural gas, reactor, a series of "gas-liquid" and "gas-gas" heat exchangers to cool reaction mixture obtained in reactor, gas-liquid separator, lower carboxylic acid recovery vessel, and system of rectification columns to isolate the rest of products.

EFFECT: enabled implementation of the process directly near gas and gas condensate deposits, increased conversion of methane per one passage through reactor, and increased yield of oxygenates due to improved design of plant.

6 cl, 1 dwg, 1 tbl

Up!