A device for removing sulfur dioxide from wine

Abstract

This invention belongs to the field of desulfurization technology, specifically relating to a device for removing sulfur dioxide from wine. The device provided by this invention can remove sulfur dioxide by nitrogen blowing, preventing the oxidation of flavor compounds in the wine. Furthermore, nitrogen is insoluble in wine, leaving no residue and not introducing new substances, complying with the new national standards, and nitrogen is safe and environmentally friendly. The nitrogen blowing method requires no additional manual labor, allows for continuous desulfurization, and greatly improves production efficiency. The nitrogen blowing method also fully utilizes the heat of the distilled mash, improving resource utilization and achieving energy conservation and emission reduction.

Description

Technical Field

[0001] This utility model belongs to the field of desulfurization technology, specifically relating to a device for removing sulfur dioxide from wine. Background Technology

[0002] Before distillation, all wines stored in tanks must have sulfur dioxide removed to prevent it from affecting the quality of the distilled spirit and the distillation equipment. Currently, the method for removing sulfur dioxide is to use hydrogen peroxide, utilizing a redox reaction (SO2 + H2O2 = H2SO4) to oxidize sulfur dioxide into sulfuric acid. However, this method also oxidizes some flavor compounds in the wine, affecting its quality. Furthermore, the redox method is not thorough, resulting in high levels of residual sulfur dioxide in the wine. Secondly, with the release of GB2760-2024, hydrogen peroxide is no longer permitted for use in the wine industry; therefore, there is currently no suitable process for desulfurizing wine. Summary of the Invention

[0003] The purpose of this invention is to provide a device for removing sulfur dioxide from wine. The device provided by this invention can remove sulfur dioxide from wine efficiently while ensuring that the flavor substances in the wine are not oxidized.

[0004] To achieve the above objectives, this utility model provides the following technical solution:

[0005] This utility model provides an apparatus for removing sulfur dioxide from wine, including a heating vessel 1;

[0006] A condensation system 2 connected to the heating vessel 1; the condensation system 2 includes a first condenser 2-1 and a second condenser 2-2 connected in series;

[0007] A heat exchanger 3 is connected to the first condenser 2-1; the heat exchanger 3 is connected to the heating vessel 1;

[0008] Gas-water separator 4 is connected to the second condenser 2-2.

[0009] Preferably, the first condenser 2-1 has a first raw material inlet 2-1-1 on its bottom side and a first raw material outlet 2-1-2 on its top side;

[0010] The second condenser 2-2 has a refrigerant inlet 2-2-1 on its bottom side and a refrigerant outlet 2-2-2 on its top side.

[0011] Preferably, the heating vessel 1 is provided with a nitrogen inlet 1-2 at the top;

[0012] The heating vessel 1 is provided with a discharge port 1-4 and a condensate outlet 1-5 at the bottom; and a steam inlet 1-6 in the middle.

[0013] Preferably, the heat exchanger 3 is a plate heat exchanger; the gas-water separator 4 is a cyclone gas-water separator.

[0014] Preferably, the heat exchanger 3 is provided with a cold medium inlet 3-1 and a hot medium outlet 3-2 at the top; and a hot medium inlet 3-3 and a second raw material outlet 3-4 at the bottom.

[0015] Preferably, the heat exchanger 3 is connected to the first raw material outlet 2-1-2 of the first condenser 2-1 through the top cold medium inlet 3-1; the heat exchanger 3 is connected to the heating vessel 1 through the second raw material outlet 3-4.

[0016] Preferably, the gas-liquid separator 4 is provided with a gas outlet 4-1 at the top and a liquid outlet 4-2 at the bottom.

[0017] Preferably, a packing layer is provided inside the middle part of the heating vessel 1; the packing layer has a mesh structure; the packing in the packing layer is a structured packing; and the packing is stainless steel packing.

[0018] Preferably, the heating vessel 1 is an automatically temperature-controlled heating vessel.

[0019] Preferably, the refrigerant is ethylene glycol.

[0020] This invention provides a device for removing sulfur dioxide from wine, comprising a heating vessel 1; a condensation system 2 connected to the heating vessel 1; the condensation system 2 including a first condenser 2-1 and a second condenser 2-2 connected in series; a heat exchanger 3 connected to the first condenser 2-1; the heat exchanger 3 being connected to the heating vessel 1; and a gas-liquid separator 4 connected to the second condenser 2-2. The device provided by this invention can remove sulfur dioxide by nitrogen blowing, preventing the oxidation of flavor compounds in the wine. Furthermore, nitrogen is insoluble in wine, leaving no residue and not introducing new substances, complying with the new national standards, and nitrogen is safe and environmentally friendly. The nitrogen blowing method requires no additional manual labor, allows for continuous desulfurization, and greatly improves production efficiency. The nitrogen blowing method fully utilizes the heat of the distilled mash, improving resource utilization and achieving energy conservation and emission reduction. Attached Figure Description

[0021] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0022] Figure 1 This invention provides an apparatus for removing sulfur dioxide from wine. Detailed Implementation

[0023] This utility model provides an apparatus for removing sulfur dioxide from wine, including a heating vessel 1;

[0024] A condensation system 2 connected to the heating vessel 1; the condensation system 2 includes a first condenser 2-1 and a second condenser 2-2 connected in series;

[0025] A heat exchanger 3 is connected to the first condenser 2-1; the heat exchanger 3 is connected to the heating vessel 1;

[0026] Gas-water separator 4 is connected to the second condenser 2-2.

[0027] like Figure 1 As shown, the apparatus for removing sulfur dioxide from wine provided by this utility model includes a heating vessel 1.

[0028] In one embodiment of this utility model, the heating vessel 1 is preferably a jacketed heating vessel; the top of the heating vessel 1 is provided with a nitrogen inlet 1-2; a nitrogen metal pipe is introduced into the middle of the wine in the heating vessel from the nitrogen inlet to avoid local purging, ensure uniform dispersion of nitrogen, and avoid "short circuit" phenomenon; the micropore diameter of the aeration head of the nitrogen metal pipe is preferably 1mm; in one embodiment of this utility model, the top of the heating vessel 1 is preferably also provided with a manhole 1-3 to facilitate the replacement of packing and internal inspection.

[0029] In one embodiment of this utility model, a steam inlet 1-6 is provided in the middle of the heating vessel 1 to provide a heat source for the heating vessel 1. In another embodiment of this utility model, the steam inlet 1-6 is connected to an external steam source (such as saturated steam) and indirectly heats the raw materials through a jacket.

[0030] In one embodiment of this utility model, the bottom of the heating vessel 1 is provided with a discharge port 1-4 and a condensate outlet 1-5; in this utility model, the sulfur dioxide-removed wine flows out through the discharge port 1-4. The condensate after steam heating is condensed in the jacket and discharged through the condensate outlet 1-5 to maintain stable heating.

[0031] In one embodiment of this utility model, a packing layer is provided inside the middle part of the heating vessel 1; the packing in the packing layer is preferably a structured packing; the packing is preferably stainless steel packing; the packing layer has a mesh structure, which can increase the gas-liquid contact area, enhance the heat transfer efficiency of the raw material and the mass transfer efficiency between N2 and the raw material, and improve the SO2 removal rate.

[0032] The apparatus for removing sulfur dioxide from wine according to this invention includes a condensation system 2 connected to a heating vessel 1; the condensation system 2 includes a first condenser 2-1 and a second condenser 2-2 connected in series.

[0033] In one embodiment of this invention, the first condenser 2-1 has a first raw material inlet 2-1-1 on its bottom side and a first raw material outlet 2-1-2 on its top side. In another embodiment, the second condenser 2-2 has a refrigerant inlet 2-2-1 on its bottom side and a refrigerant outlet 2-2-2 on its top side; the refrigerant is preferably ethylene glycol; both the first condenser 2-1 and the second condenser 2-2 are coil-type condensers. In this invention, the condensers employ counter-current cooling to improve condensation efficiency.

[0034] The apparatus for removing sulfur dioxide from wine according to this invention includes a heat exchanger 3 connected to a first condenser 2-1; the heat exchanger 3 is connected to the heating vessel 1.

[0035] In one embodiment of this utility model, the heat exchanger 3 is a plate heat exchanger; the top of the heat exchanger 3 is provided with a cold medium inlet 3-1 and a hot medium outlet 3-2; the bottom of the heat exchanger 3 is provided with a hot medium inlet 3-3 and a second raw material outlet 3-4; the heat exchanger 3 is connected to the first raw material outlet 2-1-2 of the first condenser 2-1 through the top cold medium inlet 3-1; the heat exchanger 3 is connected to the heating vessel 1 through the second raw material outlet 3-4; the heat exchanger 3 adopts countercurrent heat exchange to improve heat exchange efficiency.

[0036] The device for removing sulfur dioxide from wine according to the present invention includes a gas-liquid separator 4 connected to a second condenser 2-2. The gas-liquid separator 4 is a cyclone gas-liquid separator. The gas-liquid separator 4 has a gas outlet 4-1 at the top and a liquid outlet 4-2 at the bottom.

[0037] The present invention also provides a method for removing sulfur dioxide from wine using the apparatus described above, comprising the following steps:

[0038] Start the condenser heat exchanger, heating vessel heating, and heat exchanger heat exchanger;

[0039] The wine is fed from the raw material inlet into the first condenser for the first heat exchange, and the raw material after the first heat exchange is obtained.

[0040] The heat-exchanged raw material is passed into a heat exchanger and subjected to a second heat exchange with the distilled mash to obtain a second heat-exchanged raw material; the second heat-exchanged raw material is then passed into a heating kettle for heating treatment while being purged with nitrogen to obtain wine with sulfur dioxide removed and sulfur dioxide removed;

[0041] Nitrogen gas, carrying alcohol and sulfur dioxide, is condensed in the first and second condensers and then enters the gas-liquid separator for gas-liquid separation, yielding a mixed gas and liquid alcohol respectively; the mixed gas includes nitrogen gas and sulfur dioxide.

[0042] In this invention, the method for removing sulfur dioxide from wine preferably includes, before the condenser heat exchange and the heat exchanger heat exchange (i.e., when the wine is first introduced), heating the wine using only a heating vessel while simultaneously performing nitrogen blowing to obtain wine with sulfur dioxide removed. In this invention, the sulfur dioxide-removed wine is subsequently distilled to obtain mash; the mash can be used as the heat medium of the heat exchanger, and its use as a heat source can also save energy and improve economic efficiency.

[0043] This invention enables condenser heat exchange, heating kettle heating, and heat exchanger heat exchange; wine is introduced from the raw material inlet into the first condenser for the first heat exchange, resulting in raw material after the first heat exchange.

[0044] In one embodiment of the present invention, the flow rate of the wine is preferably 2-4 kL / h. In one embodiment of the present invention, the condensation temperature of the first condenser is preferably 15-20°C; in one embodiment of the present invention, the temperature of the raw material after the first heat exchange is 30-35°C.

[0045] After obtaining the first heat-exchanged raw material, the present invention introduces the heat-exchanged raw material into heat exchanger 3 for a second heat exchange with the mash to obtain the second heat-exchanged raw material; the second heat-exchanged raw material is then introduced into a heating kettle for heating treatment while simultaneously blowing with nitrogen. After heating until the wine boils, nitrogen blowing continues for 15-30 minutes to obtain wine with sulfur dioxide removed and sulfur dioxide; nitrogen carrying alcohol and sulfur dioxide is condensed in the first and second condensers and then enters a gas-liquid separator for gas-liquid separation to obtain a mixed gas and liquid alcohol respectively; the mixed gas includes nitrogen and sulfur dioxide.

[0046] In this invention, the first condenser can initially cool the alcohol in the steam obtained after heating in the heating vessel, ensuring maximum alcohol recovery (reducing the alcohol content in the waste gas and improving economic efficiency), while preheating the raw materials, saving energy and reducing consumption. The second condenser can further condense the alcohol in the steam obtained after heating in the heating vessel (the steam flows from bottom to top, and the cooling medium flows from top to bottom, resulting in counter-current heat exchange), while preparing for subsequent gas-liquid separation.

[0047] In one embodiment of the present invention, the temperature of the raw material after the second heat exchange is 60°C.

[0048] In one embodiment of the present invention, nitrogen gas carrying trace amounts of alcohol and sulfur dioxide enters a gas-liquid separator and moves downwards in a swirling, inclined motion. Due to the reduced velocity of the swirling nitrogen gas, the alcohol entrained in it accumulates on the inner wall of the gas-liquid separator under the existing centrifugal force. It is then discharged through an automatic valve, while the dried nitrogen gas, carrying sulfur dioxide, exits from the separator's gas outlet. The gas-liquid separator has high alcohol recovery efficiency; when the gas velocity drops below 13.8 m / s, it can recover more than 99% of the liquid alcohol.

[0049] This invention uses nitrogen blowing to remove sulfur dioxide from wine, preventing the oxidation of flavor compounds. Furthermore, nitrogen is insoluble in wine, leaving no residue and not introducing new substances, complying with new national standards, and is safe and environmentally friendly. Nitrogen blowing requires no additional manual labor, allows for continuous desulfurization, and significantly improves production efficiency. It also fully utilizes the heat from the distilled mash, improving resource utilization and achieving energy conservation and emission reduction.

[0050] To further illustrate this utility model, the following detailed description of the utility model's solution is provided in conjunction with the accompanying drawings and embodiments, but these descriptions should not be construed as limiting the scope of protection of this utility model.

[0051] Example 1

[0052] like Figure 1 As shown, the device for removing sulfur dioxide from wine includes a jacketed heating vessel 1, which is provided with a nitrogen inlet 1-2 and a manhole 1-3 at the top, a discharge port 1-4 and a condensate outlet 1-5 at the bottom, and a steam inlet 1-6 in the middle.

[0053] A first condenser 2-1 is connected to a jacketed heating vessel, and a second condenser 2-2 is connected in series with the first condenser 2-1. A first raw material inlet 2-1-1 is provided on the bottom side of the first condenser, and a first raw material outlet 2-1-2 is provided on the top side of the first condenser.

[0054] The plate heat exchanger 3, which is connected to the first condenser, has a cold medium inlet 3-1 and a hot medium outlet 3-2 at its top;

[0055] The bottom is provided with a hot medium inlet 3-3 and a second raw material outlet 3-4; the top cold medium inlet 3-1 is connected to the first raw material outlet 2-1-2 of the first condenser 2-1; and the second raw material outlet 3-4 is connected to the jacketed heating vessel 1.

[0056] The cyclone gas-liquid separator 4, which is connected to the second condenser, has a gas outlet 4-1 at the top and a liquid outlet 4-2 at the bottom.

[0057] Desulfurization methods:

[0058] Start the condenser heat exchanger, heating vessel heating, and heat exchanger heat exchanger;

[0059] Wine-1 is introduced through the raw material inlet, passes through the first condenser and heat exchanger, and enters the heating kettle for heating. The heated wine vapor enters the first condenser (condensation temperature is 20℃) for the first heat exchange, and the raw material after the first heat exchange is obtained at a temperature of 35℃.

[0060] The heat-exchanged raw material is passed into a heat exchanger and subjected to a second heat exchange with mash (the mash is obtained by distilling wine to remove sulfur dioxide, and the temperature of the mash is 95°C) to obtain a second heat-exchanged raw material at a temperature of 60°C; the second heat-exchanged raw material is then passed into a heating kettle for heating treatment while being purged with nitrogen; after the raw material boils, it is then purged with nitrogen for 30 minutes (the wine after nitrogen purging is tested every 5 minutes, and the residual sulfur dioxide results are shown in Table 1) to obtain wine with sulfur dioxide removed and sulfur dioxide removed;

[0061] Nitrogen gas, carrying alcohol and sulfur dioxide, is condensed in the first and second condensers and then enters a cyclone gas-liquid separator for gas-liquid separation, yielding a mixed gas and liquid alcohol respectively; the mixed gas consists of nitrogen gas and sulfur dioxide.

[0062] Note: Before the wine is recycled, i.e. when it first enters the system, it is directly heated and purged with nitrogen in the heating vessel before the recycling process is completed.

[0063] Example 2

[0064] The only difference from Example 1 is that wine-1 is replaced with wine-2.

[0065] Table 1. Effect of nitrogen blowing desulfurization time on the results

[0066]

[0067] Example 3

[0068] The difference from Example 1 is that the condensation temperature is 10°C.

[0069] Example 4

[0070] The difference from Example 1 is that the condensation temperature is -5°C.

[0071] The effect of condensation temperature on the alcohol content of the wine was tested according to GB15038 in Examples 1 to 3, as shown in Table 2.

[0072] Table 2. Effect of condensation temperature on alcohol content of the wine

[0073]

[0074] Although the above embodiments have provided a detailed description of the present invention, they are only some embodiments of the present invention, not all embodiments. Other embodiments can be obtained based on the present embodiments without creative intent, and these embodiments all fall within the protection scope of the present invention.

Claims

1. An apparatus for removing sulfur dioxide from wine, comprising a heating vessel (1); A condensation system (2) connected to the heating vessel (1); the condensation system (2) includes a first condenser (2-1) and a second condenser (2-2) connected in series; A heat exchanger (3) connected to the first condenser (2-1); the heat exchanger (3) is connected to the heating vessel (1); A gas-liquid separator (4) connected to the second condenser (2-2).

2. The apparatus of claim 1, wherein, The first condenser (2-1) has a first raw material inlet (2-1-1) on its bottom side and a first raw material outlet (2-1-2) on its top side. The second condenser (2-2) has a refrigerant inlet (2-2-1) on its bottom side and a refrigerant outlet (2-2-2) on its top side.

3. The apparatus of claim 1, wherein, The heating vessel (1) is provided with a nitrogen inlet (1-2) at the top; The heating vessel (1) is provided with a discharge port (1-4) and a condensate outlet (1-5) at the bottom; and a steam inlet (1-6) in the middle.

4. The apparatus of claim 1, wherein, The heat exchanger (3) is a plate heat exchanger; the gas-water separator (4) is a cyclone gas-water separator.

5. The apparatus of claim 1, wherein, The heat exchanger (3) is provided with a cold medium inlet (3-1) and a hot medium outlet (3-2) at the top; and a hot medium inlet (3-3) and a second raw material outlet (3-4) at the bottom.

6. The apparatus of claim 5, wherein, The heat exchanger (3) is connected to the first raw material outlet (2-1-2) of the first condenser (2-1) through the top cold medium inlet (3-1); the heat exchanger (3) is connected to the heating vessel (1) through the second raw material outlet (3-4).

7. The apparatus of claim 1, wherein, The gas-liquid separator (4) has a gas outlet (4-1) at the top and a liquid outlet (4-2) at the bottom.

8. The apparatus of claim 3, wherein, The heating vessel (1) has a packing layer inside its middle section; the packing layer has a mesh structure; the packing material in the packing layer is a structured packing material; and the packing material is stainless steel packing material.

9. The apparatus of claim 1, wherein, The heating vessel (1) is an automatic temperature-controlled heating vessel.

10. The apparatus of claim 2, wherein, The refrigerant is ethylene glycol.

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