CN110860176A - Device and process for recycling mixed gas in wine fermentation process - Google Patents
Device and process for recycling mixed gas in wine fermentation process Download PDFInfo
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- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/002—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by condensation
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- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
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- B01D53/22—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by diffusion
- B01D53/228—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by diffusion characterised by specific membranes
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Abstract
The invention discloses a device and a process for recovering mixed gas in a wine fermentation process, wherein the mixed gas comprises fragrant substance gas and carbon dioxide, the device comprises a fermentation tank, a condenser communicated with the fermentation tank, an organic substance permeable membrane separator communicated with the condenser, a fragrant substance storage tank communicated with the condenser and a carbon dioxide collection tank communicated with the organic substance permeable membrane separator, the condenser is arranged between the fermentation tank and the organic substance permeable membrane separator, fragrant substance gas is condensed by the condenser to form fragrant substance liquid and is collected into the fragrant substance storage tank, the uncondensed mixed gas enters the organic substance permeable membrane separator, and the mixed gas which does not permeate the organic substance permeable membrane separator is collected into the carbon dioxide collection tank. The device and the process for recovering the mixed gas in the wine fermentation process can effectively recover the mixed gas in the wine fermentation process, ensure the aroma quality of the wine and reduce the production cost.
Description
Technical Field
The invention relates to the technical field of metabolite separation in a wine fermentation process, in particular to a device and a process for recovering mixed gas in the wine fermentation process.
Background
Wine aroma substances are one of the main factors influencing the quality of wine, and play an important role in the aspects of style, personality and quality of the wine. At present, more than 800 kinds of flavor substance components are known in the wine, the content is 1 mug/L-100 mg/L, the complex components are generated and changed continuously in the whole process of 'grape → grape juice → wine → aging', and the flavor quality of the wine depends on the kinds and the concentrations of the compounds.
In order to protect the quality of wine and avoid oxidation in the production process of a winery, protective gases such as nitrogen or carbon dioxide are often needed to be filled into a wine storage tank or a fermentation tank, and higher production cost is needed for self-making nitrogen or purchasing liquid carbon dioxide. A large amount of carbon dioxide gas can be generated in the fermentation process of the wine, the carbon dioxide gas is usually directly discharged into the air from a fermentation tank without being utilized, the carbon dioxide gas is not reasonably utilized, waste is caused, and meanwhile volatile fragrant substance gas in the wine can be carried away in the process of discharging the carbon dioxide gas, and the fragrance of the wine is finally influenced.
Disclosure of Invention
The invention aims to provide a device and a process for recovering mixed gas in the wine fermentation process, aiming at the defects in the prior art, so that the mixed gas in the wine fermentation process can be effectively recovered, the aroma quality of the wine is ensured, and the production cost is reduced.
In order to realize the aim of the invention, the invention provides a device for recovering mixed gas in the fermentation process of wine, the mixed gas generated in the fermentation process comprises fragrant substance gas and carbon dioxide, the device comprises a fermentation tank, a condenser communicated with the fermentation tank, an organic substance permeable membrane separator communicated with the condenser, a fragrant substance storage tank communicated with the condenser and a carbon dioxide collecting tank communicated with the organic substance permeable membrane separator, the condenser is arranged between the fermentation tank and the organic matter permeable membrane separator, the fragrant substance gas is condensed by the condenser to form fragrant substance liquid and is collected into the fragrant substance storage tank, the uncondensed mixed gas enters the organic matter permeable membrane separator, and the mixed gas which does not permeate the organic matter permeable membrane separator is collected into the carbon dioxide collection tank.
Further, the condenser comprises a gas inlet, the organic matter permeable membrane separator comprises a permeation side, the permeation side is communicated with the gas inlet, a vacuum pump is arranged between the permeation side and the gas inlet, and mixed gas permeating through the organic matter permeable membrane separator is returned to the condenser through the vacuum pump.
Further, the organic matter permeable membrane separator is composed of a plurality of membrane modules which are connected in series and/or in parallel, and the membrane modules comprise organic matter permeable membranes.
Further, the organic matter permeable membrane is formed by compounding one or more of polydimethylsiloxane, polytrifluoropropylmethylsiloxane, a perfluoroacrylate polymer, polytetrafluoroethylene, hydrophobic nano white carbon black or inorganic ceramic.
Further, the condenser also comprises a gas outlet and a liquid outlet, the fermentation tank is communicated with the gas inlet, the organic matter permeable membrane separator is communicated with the gas outlet, and the fragrance substance storage tank is communicated with the liquid outlet.
Further, the organic matter permeable membrane separator further comprises a retentate side and a separator inlet, the gas outlet is communicated with the separator inlet, and the carbon dioxide collection tank is communicated with the retentate side.
Furthermore, the concentration of the aroma substances in the mixed gas generated in the fermentation process is 0.5-2 wt.%, and the aroma substances comprise alcohols and esters. Alcohols include ethanol, 3-methyl-1-butanol, phenethyl alcohol, hexanol and 2-methyl-1-propanol; esters include ethyl octanoate and ethyl acetate.
After condensation by the condenser, the concentration of the aroma substances in the uncondensed mixed gas is 0.1-0.5 wt.%.
After separation by an organic matter permeable membrane separator, the concentration of the aroma substances in the mixed gas on the permeation side is 2-8 wt.%, and the mass concentration of the aroma substances in the mixed gas on the permeation side is 0.01-0.05 wt.%.
On the other hand, the application also provides a process for recovering mixed gas in the wine fermentation process, which comprises the following steps:
the mixed gas generated in the wine fermentation process enters the condenser for condensation, and the aroma substance gas in the mixed gas is condensed to form aroma substance liquid which is collected into the aroma substance storage tank;
and the mixed gas which is not condensed enters the organic matter permeable membrane separator, the aromatic substance gas in the mixed gas selectively permeates the organic matter permeable membrane, and the mixed gas at the permeation side is collected into the carbon dioxide collecting tank.
Further, the process also comprises the following steps:
and returning the mixed gas at the permeation side to the condenser through a vacuum pump, and continuously recovering the mixed gas and the mixed gas generated in the fermentation process.
Further, the operating pressure of the vacuum pump is 4-20 kPa, and the condensing temperature of the condenser is-5 to-30 ℃.
Compared with the prior art, the invention has the advantages that:
(1) the combination of condensation and membrane separation technologies is adopted, mixed gas in the wine fermentation process can be effectively recovered, specifically, fragrant substances and carbon dioxide in the mixed gas can be effectively recovered, the fragrant substances can be used for wine blending, and the carbon dioxide collection tank can be used as food-grade carbon dioxide for protective gas in the fermentation process, so that the aroma quality of the wine is ensured, and meanwhile, the production cost is reduced.
(2) The organic substance permeable membrane has high selectivity on the fragrant substances, can efficiently enrich the low-concentration fragrant substances, and reduces the energy consumption of the condenser.
Drawings
FIG. 1 is a schematic view showing the structure of an apparatus for recovering a mixed gas in a wine fermentation process according to the present invention.
Detailed Description
The present invention will be described in further non-limiting detail with reference to the following preferred embodiments and accompanying drawings.
As shown in FIG. 1, the apparatus for recycling mixed gas in wine fermentation process according to a preferred embodiment of the present invention comprises a fermentation tank 1, a condenser 2 in communication with the fermentation tank 1, an organic substance permeable membrane separator 3 in communication with the condenser 2, a flavor material storage tank 4 in communication with the condenser 2, and a carbon dioxide collection tank 5 in communication with the organic substance permeable membrane separator 3.
Wherein, condenser 2 includes gas inlet 21, gas outlet 22 and liquid outlet 23, and fermentation cylinder 1 communicates with gas inlet 21, and organic matter permeable membrane separator 3 communicates with gas outlet 22, and is provided with fan 7 between fermentation cylinder 1 and the gas inlet 21, and fragrant smell material storage tank 4 communicates with liquid outlet 23. The organic matter permeable membrane separator 3 comprises a retentate side 31, a permeate side 32 and an organic matter permeable membrane separator inlet (33), the gas outlet 22 is communicated with the organic matter permeable membrane separator inlet (33), the carbon dioxide collecting tank 5 is communicated with the retentate side 31, the permeate side 32 is communicated with the gas inlet 21, and a vacuum pump 6 is arranged between the permeate side 32 and the gas inlet 21.
Specifically, the organic-permeable membrane separator 3 is composed of a plurality of membrane modules connected in series and/or in parallel, and the membrane modules include organic-permeable membranes. The organic matter permeable membrane is formed by compounding one or more of polydimethylsiloxane, polytrifluoropropylmethylsiloxane, perfluoroacrylate polymer, polytetrafluoroethylene, hydrophobic nano white carbon black or inorganic ceramic, and the type of the organic matter permeable membrane comprises a tubular type, a flat plate type, a hollow fiber type or a roll type. The mixed gas comprises carbon dioxide and aromatic substance gas, and the aromatic substance gas comprises alcohols and esters. Wherein the alcohols include ethanol, 3-methyl-1-butanol, phenethyl alcohol, hexanol, and 2-methyl-1-propanol; esters include ethyl octanoate and ethyl acetate. In the metabolites produced in the wine fermentation process, particularly in the mixed gas of the aromatic substance gas and the carbon dioxide, volatile organic compounds such as ester and alcohol are more easily dissolved, diffused and permeated through the organic substance permeable membrane than the carbon dioxide, so that the aromatic substance gas (volatile organic component) of the mixed gas can be enriched according to the characteristic of preferential permeation of the organic substance permeable membrane.
Correspondingly, the invention provides a process for recovering mixed gas in the wine fermentation process, which comprises the following steps:
feeding mixed gas generated in the fermentation process of the wine into the condenser 2 through the fan 7 for condensation, wherein the concentration of aroma substances in the mixed gas generated in the fermentation process is 0.5-2 wt%; the aroma gas in the mixed gas is condensed to form aroma liquid, and the aroma liquid is collected in the aroma storage tank 4. Wherein the operation pressure of the fan 7 is 110-140 kPa, and the condensation temperature of the condenser is-5 to-30 ℃. Compared with carbon dioxide, the aroma substance gas in the fermentation tank is easier to condense, the condensation temperature of the carbon dioxide is-79 ℃, and the temperature set by the condenser is far higher than the range, so that the condenser can condense the aroma substance gas in the mixed gas into aroma substance liquid, and the mixed gas is separated out firstly.
The concentration of the aroma substances in the non-condensed mixed gas is 0.1-0.5 wt%, the mixed gas enters an organic matter permeable membrane separator 3, the permeation side of the organic matter permeable membrane separator is vacuumized to enable the aroma substances in the mixed gas to selectively permeate the organic matter permeable membrane, after the mixed gas is separated by the organic matter permeable membrane separator 3, the concentration of the aroma substances in the mixed gas at the retentate side 31 is 0.01-0.05 wt%, and the mixed gas is directly collected into a carbon dioxide collecting tank 5. .
The concentration of the aroma substances in the mixed gas at the permeation side 32 is 2-8 wt.%, the mixed gas is returned to the condenser 2 through the vacuum pump 6, the mixed gas and the mixed gas generated in the fermentation process are continuously recycled, and the operation pressure of the vacuum pump 6 is 4-20 kPa.
The aroma liquid obtained from the aroma storage tank 4 can be used as wine and carbon dioxide in the carbon dioxide collection tank 5 can be used as food grade carbon dioxide.
The first embodiment is as follows:
the organic-permeable membrane separator 3 is composed of a plurality of membrane modules connected in series and/or in parallel according to the properties and flow rate of the mixed gas in the fermentation tank. In this embodiment, the membrane module comprises an organic permeable membrane in the form of a tube. The organic matter permeable membrane is prepared by compounding polydimethylsiloxane, perfluorinated acrylate polymer, inorganic ceramic and hydrophobic nano white carbon black.
In this embodiment, the mixed gas containing the fragrant substances includes carbon dioxide, alcohols, and esters, wherein the concentration of the fragrant substance gas is 2 wt.%, and the specific process for recovering the fragrant substances by using the recovery device includes:
the mixed gas generated in the fermentation process of the wine is sent into the condenser 2 through the fan 7 and then sent into the condenser 2 for condensation, and the aroma substance gas in the mixed gas is condensed to form aroma substance liquid which is collected into the aroma substance storage tank 4.
The mixed gas which is not condensed (the concentration of the aroma substance gas is 0.5 wt.%) enters the organic matter permeable membrane separator 3, so that the aroma substance gas in the mixed gas selectively permeates the organic matter permeable membrane, and after the mixed gas is separated by the organic matter permeable membrane separator 3, the mixed gas at the retentate side 31 is collected into a carbon dioxide collecting tank 5, wherein the concentration of the aroma substance in the carbon dioxide collecting tank 5 is 0.05 wt.%.
The mixed gas (aroma gas concentration of 8 wt.%) at the permeate side 32 is returned to the condenser 2 by the vacuum pump 6, and the recovery operation is continued together with the mixed gas generated during the fermentation.
Through detection, the average content of the total fragrant substances (organic volatile substances) in the fragrant substance storage tank 4 is 1500mg/L, and the main components are alcohols and esters, including ethanol, 3-methyl-1-butanol, phenethyl alcohol, hexanol, 2-methyl-1-propanol, ethyl caprylate and ethyl acetate. Wherein the average content of ethanol is 26 wt.%.
Example two:
in the second embodiment, the same recycling apparatus as in the first embodiment is used, except that in this embodiment, the mixed gas containing the aromatic substances includes carbon dioxide, alcohols, esters, ketones, and acids, wherein the concentration of the aromatic substance gas is 1.5 wt.%. The membrane module comprises an organic matter permeable membrane, and the type is a roll type. The organic matter permeable membrane is prepared by compounding multiple materials of poly (trifluoropropylmethyl siloxane), perfluoroacrylate polymer, polytetrafluoroethylene and hydrophobic nano white carbon black. The specific process for recovering the fragrant substances by utilizing the recovery device comprises the following steps:
the mixed gas generated in the fermentation process of the wine is sent into the condenser 2 through the fan 7 and then sent into the condenser 2 for condensation, and the aroma substance gas in the mixed gas is condensed to form aroma substance liquid which is collected into the aroma substance storage tank 4.
The non-condensed mixed gas (the concentration of the aroma substance gas is 0.3%) enters the organic substance permeable membrane separator 3, so that the aroma substance gas in the mixed gas selectively permeates the organic substance permeable membrane, after the aromatic substance gas is separated by the organic substance permeable membrane separator 3, the mixed gas at the retentate side 31 is collected into the carbon dioxide collecting tank 5, wherein the concentration of the aroma substance gas in the carbon dioxide collecting tank 5 is 0.04%.
The mixed gas (3.2% by mass of the flavor substance gas) on the permeate side 32 is returned to the condenser 2 by the vacuum pump 6, and the recovery operation is continued together with the mixed gas generated during the fermentation.
The detection shows that the average content of total fragrant substances (organic volatile substances) in the fragrant substance storage tank 4 is 1300mg/L, and the main components are alcohols, esters, ketones and acids, including ethanol, 3-methyl-1-butanol, phenethyl alcohol, hexanol, 2-methyl-1-propanol, ethyl caprylate, ethyl acetate, β -damascenone and caprylic acid, wherein the average content of ethanol is 25 wt.%.
The device and the process for recovering the mixed gas in the wine fermentation process adopt the combination of condensation and membrane separation technologies, can effectively recover the mixed gas in the wine fermentation process, particularly the fragrant substances and the carbon dioxide in the mixed gas, the fragrant substances can be used for blending wine, the carbon dioxide collection tank (5) can be used as food-grade carbon dioxide for protective gas in the fermentation process, and the production cost is reduced while the fragrance quality of the wine is ensured; the used organic substance permeable membrane has high selectivity on the fragrant substances, can efficiently enrich the fragrant substances with low concentration, and reduces the energy consumption of the condenser; the preferable organic matter permeable membrane is mainly applied to separation of an organic matter-water system or separation of an organic matter-organic matter system, and has the advantages of low energy consumption, simple process equipment, high recovery rate, simple operation, high safety and the like compared with other separation modes such as rectification, extraction, adsorption and the like.
It should be noted that the above-mentioned preferred embodiments are merely illustrative of the technical concepts and features of the present invention, and are intended to enable those skilled in the art to understand the contents of the present invention and implement the present invention, and not to limit the scope of the present invention. All equivalent changes and modifications made according to the spirit of the present invention should be covered within the protection scope of the present invention.
Claims (10)
1. A device for recovering mixed gas in the fermentation process of wine, the mixed gas generated in the fermentation process comprises fragrant substance gas and carbon dioxide, and is characterized in that: the device includes fermentation cylinder (1), with condenser (2) of fermentation cylinder (1) intercommunication, with pass through organic matter membrane separator (3) of condenser (2) intercommunication, with fragrant smell material storage tank (4) of condenser (2) intercommunication and with pass through carbon dioxide collection tank (5) of organic matter membrane separator (3) intercommunication, condenser (2) set up between fermentation cylinder (1) and the organic matter membrane separator (3), fragrant smell material gas passes through form fragrant smell material liquid and collect after condenser (2) condensation in fragrant smell material storage tank (4), the mist that is not condensed gets into pass through organic matter membrane separator (3), does not permeate the mist that passes through organic matter membrane separator (3) is collected to in carbon dioxide collection tank (5).
2. The apparatus for recovering a mixed gas in a wine fermentation process according to claim 1, wherein: the condenser (2) comprises a gas inlet (21), the organic matter permeable membrane separator (3) comprises a permeation side (32), the permeation side (32) is communicated with the gas inlet (21), a vacuum pump (6) is arranged between the permeation side (32) and the gas inlet (21), and mixed gas permeating through the organic matter permeable membrane separator (3) is returned to the condenser (2) through the vacuum pump (6).
3. The apparatus for recovering a mixed gas in a wine fermentation process according to claim 1, wherein: the organic matter permeable membrane separator (3) is formed by connecting a plurality of membrane modules in series and/or in parallel, and the membrane modules comprise organic matter permeable membranes.
4. An apparatus for recovering a gas mixture in a wine fermentation process according to claim 3, wherein: the organic matter permeable membrane is formed by compounding one or more of polydimethylsiloxane, polytrifluoropropylmethylsiloxane, a perfluoroacrylate polymer, polytetrafluoroethylene, hydrophobic nano white carbon black or inorganic ceramic.
5. The apparatus for recovering a mixed gas in a wine fermentation process according to claim 2, wherein: the condenser (2) further comprises a gas outlet (22) and a liquid outlet (23), the fermentation tank (1) is communicated with the gas inlet (21), the organic substance permeable membrane separator (3) is communicated with the gas outlet (22), and the fragrance substance storage tank (4) is communicated with the liquid outlet (23).
6. The apparatus for recovering a mixed gas in a wine fermentation process according to claim 5, wherein: the organic matter permeable membrane separator (3) further comprises a retentate side (31) and a separator inlet (33), the gas outlet (22) is communicated with the separator inlet (33), and the carbon dioxide collection tank (5) is communicated with the retentate side (31).
7. The apparatus for recovering a mixed gas in a wine fermentation process according to claim 1, wherein: the concentration of aroma substances in the mixed gas generated in the fermentation process is 0.5-2 wt.%, the aroma substances comprise alcohols and esters, and the alcohols comprise ethanol, 3-methyl-1-butanol, phenethyl alcohol, hexanol and 2-methyl-1-propanol; esters include ethyl octanoate and ethyl acetate.
8. A process for recovering mixed gas in the fermentation process of wine is characterized by comprising the following steps:
mixed gas generated in the fermentation process of the wine enters the condenser (2) for condensation, and after the aroma substance gas in the mixed gas is condensed, aroma substance liquid is formed and collected into the aroma substance storage tank (4);
the mixed gas which is not condensed enters the organic matter permeable membrane separator (3), the aroma substance gas in the mixed gas selectively permeates the organic matter permeable membrane, and the mixed gas on the permeation side (31) is collected into the carbon dioxide collecting tank (5).
9. The process for recovering a gas mixture in a wine fermentation process as set forth in claim 8, wherein: the process further comprises the following steps:
the mixed gas at the permeation side (32) is returned to the condenser (2) through a vacuum pump (6) and continues the recovery operation together with the mixed gas generated in the fermentation process.
10. The process for recovering a gas mixture in a wine fermentation process as set forth in claim 9, wherein: the operating pressure of the vacuum pump (6) is 4-20 kPa, and the condensing temperature of the condenser is-5 to-30 ℃.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN112552145A (en) * | 2020-10-30 | 2021-03-26 | 新疆中信国安葡萄酒业有限公司 | Method for collecting, concentrating and enriching volatile aroma and alcohol in wine fermentation process |
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