Low-temperature turbidity prevention and purification device for white spirit

Abstract

The utility model relates to the technical field of white spirit production, in particular to a low-temperature turbidity prevention and purification device for white spirit. The low-temperature turbidity prevention and purification device for the white spirit comprises a macroporous resin adsorber, a molecular sieve carbon filter and a titanium metal filter, an outlet of the macroporous resin adsorber is communicated with an inlet of the molecular sieve carbon filter; an outlet of the molecular sieve carbon filter is communicated with an inlet of the titanium metal filter; a pump is arranged at an inlet of the macroporous resin adsorber; the macroporous resin adsorber is filled with renewable macroporous adsorption resin; and molecular sieve carbon particles are filled in the active carbon filter. The device can be used for purifying white spirit, removing higher fatty acid ester, peculiar smell substances and macroscopic substances in the white spirit and preventing the white spirit from being turbid at low temperature, and the purified white spirit can be prevented from being turbid at low temperature and is good in sensory evaluation.

Description

Technical Field

[0001] The utility model relates to the technical field of liquor production, in particular to a device for preventing low-temperature turbidity and purifying liquor. Background Technique

[0002] Liquor is a distilled liquor made from grain as the main raw material, using daqu, xiaoqu, bran koji, enzyme preparations and yeast as saccharifying and fermenting agents, and is made through steaming, saccharification, fermentation, distillation, aging and blending. Therefore, liquor is a mixture, which may contain main substances such as higher fatty acid esters, acetaldehyde, formaldehyde, etc. that cause low-temperature turbidity of liquor.

[0003] At present, there are various purification devices for preventing low-temperature turbidity of liquor commonly used on the market, but they are mainly divided into two categories: one is a freezing and filtering device, that is, after the liquor is cooled, the substances precipitated at low temperature are removed through a filtering device; the other is a normal-temperature filtering device using a combination of powdered activated carbon and diatomaceous earth. The cost of treating liquor by the freezing and filtering device is relatively high, especially the power consumption is very high, and the input cost and use cost are relatively large. At the same time, the freezing device treats liquor at low temperature, which has a greater impact on the loss of the fragrance of liquor. After the normal-temperature filtering device using the combination of powdered activated carbon adsorption and diatomaceous earth treats liquor, the anti-freezing effect of the liquor is poor. Especially through experimental research, when the alcohol content of the liquor is <50°, after being filtered by powdered activated carbon adsorption and diatomaceous earth, the liquor body will become turbid at about 0°C; in addition, powdered activated carbon and diatomaceous earth are easy to pollute the environment and cannot be recycled.

[0004] In the prior art, Chinese Patent CN116218630A discloses a freezing and impurity-removing process for liquor base liquor, and specifically discloses the freezing and impurity-removing process for liquor base liquor, including the following steps: S1. Rotary evaporation: First, put the liquor base liquor into a rotary evaporator, and perform low-temperature and low-pressure treatment in an environment with a temperature of 45°C and a pressure of 0.098 mpa, and then raise the temperature to 95°C and keep the pressure at 0.098 mpa for high-temperature and low-pressure treatment. This step is mainly to remove methanol, low-boiling-point fusel oil and low-soluble fatty acid esters;

[0005] S2. Freezing and filtration treatment: Transfer the baijiu base liquor after high-temperature and low-pressure treatment in step S1 to a freezing and filtration device, rapidly cool it to a low temperature of -15°C, and maintain for a period of time to cause the ethyl esters of higher fatty acids to flocculate, precipitate, and increase in particle size, and then remove the turbidity under this low-temperature condition; S3. Low-temperature ion exchange resin filtration: Treat the baijiu base liquor after freezing and filtration in step S2 with a food-grade ion exchange resin without precipitation under low-temperature conditions to remove metal ions in the baijiu and make the baijiu purer. This technology mainly combines freezing and filtration, rotary evaporation technology, and ion exchange resin filtration. The baijiu base liquor is first subjected to low-temperature rotary evaporation using rotary evaporation technology to remove methanol in the baijiu, and then high-temperature rotary evaporation to remove high-boiling compounds such as ethyl esters of higher fatty acids. Immediately after that, the distilled base liquor is rapidly cooled using the freezing and filtration method, filtered after maintaining the low temperature for a period of time to remove the ethyl esters of higher fatty acids that cause low temperature, and combined with ion exchange resin to remove metal ions in the base liquor, making the baijiu purer and more palatable. The cost of treating baijiu with this process is relatively high, especially the power consumption is very high, and the input cost and usage cost are relatively large. At the same time, the freezing equipment treats baijiu based on low temperature, which has a greater impact on the loss of the fragrance of baijiu.

[0006] Chinese Patent CN203196424U discloses a fine filtration tank for baijiu, and specifically discloses a fine filtration tank for baijiu. The lower end of the tank body is equipped with support feet, and the bottom of the tank body is equipped with a liquid inlet pipe and a liquid outlet pipe. The liquid inlet pipe extends into the lower part of the tank body, and the liquid outlet pipe extends into the upper part of the tank body. Multiple groups of annular leakage holes are processed on the liquid outlet pipe, and a fixing ring is installed on the leakage holes. A horizontal through hole is processed at the position corresponding to the leakage holes in the middle of the fixing ring. The filter disc is composed of a disc body and a filter mesh installed on the upper end surface of the disc body. There is a gap between the filter mesh and the bottom surface of the disc body. An installation hole is opened in the center of the filter disc. The gap between the filter mesh and the bottom surface of the disc body on the inner side of the installation hole forms an annular liquid outlet. The installation hole is sleeved on the fixing ring, and its upper and lower surfaces are sealed by the upper and lower sides of the fixing ring. The annular liquid outlet, the through hole, and the leakage holes form a filtration liquid channel. On the filter mesh of the filter disc, a layer of diatomaceous earth filtration layer is laid flat, and a layer of activated carbon layer is also laid on the diatomaceous earth filtration layer. A second layer of diatomaceous earth layer is covered on the activated carbon layer. The diatomaceous earth layer and the activated silica layer are arranged at intervals, and the total number of layers is between three and nine, and the lowermost layer and the uppermost layer are both diatomaceous earth layers. Due to the addition of an activated carbon adsorption and filtration layer in the middle of the diatomaceous earth filtration layer, the suspended substances and precipitates in the high-proof baijiu are adsorbed and filtered by both diatomaceous earth and activated carbon, and the produced baijiu is transparent and clean, and there will no longer be suspended substances and precipitates. This filtration tank uses activated carbon and diatomaceous earth, which cannot be recycled and reused, and the external discharge will pollute the environment. The baijiu body after treatment will become turbid at low temperature.

[0007] In view of this, it is of great significance to provide a device and method for preventing low-temperature turbidity and purifying baijiu. Summary of the Utility Model

[0008] The utility model provides a device for preventing low-temperature turbidity and purifying white liquor, which can purify white liquor, remove higher fatty acid esters, odor substances and visible matters in white liquor, prevent low-temperature turbidity of white liquor, and the purified white liquor can prevent low-temperature turbidity and has good sensory evaluation.

[0009] The device for preventing low-temperature turbidity and purifying white liquor includes a macroporous resin adsorber, a molecular sieve carbon filter and a titanium metal filter.

[0010] The outlet of the macroporous resin adsorber is communicated with the inlet of the molecular sieve carbon filter.

[0011] The outlet of the molecular sieve carbon filter is communicated with the inlet of the titanium metal filter.

[0012] A pump is arranged at the inlet of the macroporous resin adsorber.

[0013] Renewable macroporous adsorption resin is filled in the macroporous resin adsorber.

[0014] Molecular sieve carbon particles are filled in the molecular sieve carbon filter.

[0015] In a specific embodiment of the utility model, the pump is a variable-frequency control pump.

[0016] In a specific embodiment of the utility model, the molecular sieve carbon particles are molecular sieve coconut shell carbon mixed particles.

[0017] A method for preventing low-temperature turbidity and purifying white liquor is realized by using the above device for preventing low-temperature turbidity and purifying white liquor, and includes the following steps:

[0018] S1: Input the white liquor base liquor into the macroporous resin adsorber through the pump, and remove higher fatty acid esters based on the adsorption of the macroporous adsorption resin.

[0019] S2: Input the white liquor base liquor from which higher fatty acid esters are removed in step S1 into the molecular sieve carbon filter, and remove odor substances based on the molecular sieve carbon particles.

[0020] S3: Input the white liquor base liquor from which odor substances are removed in step S2 into the titanium metal filter, filter and remove visible matters to obtain white liquor with low-temperature turbidity prevention and purification.

[0021] In a specific embodiment of the utility model, in step S1, the flow rate of the white liquor base liquor is controlled according to the alcohol content of the white liquor base liquor.

[0022] In a specific embodiment of the present utility model, when the alcohol content of the base liquor of Chinese liquor ≥ 52°, the flow rate of the base liquor of Chinese liquor is controlled at 30 m / s; when the alcohol content of the base liquor of Chinese liquor < 52° and ≥ 45°, the flow rate of the base liquor of Chinese liquor is controlled at 20 m / s; when the alcohol content of the base liquor of Chinese liquor < 45°, the flow rate of the base liquor of Chinese liquor is controlled at 15 m / s.

[0023] In a specific embodiment of the present utility model, in step S1, the temperature for removing higher fatty acid esters is 5 - 30°C.

[0024] In a specific embodiment of the present utility model, in step S2, the odor substances include any one or several of formaldehyde, acetaldehyde, furfural, and fusel oil; the odor substances also include trace odor substances released during the adsorption of higher fatty acid esters by the renewable macroporous adsorption resin, such as crosslinking agents.

[0025] In a specific embodiment of the present utility model, in step S2, the temperature for removing odor substances is 5 - 30°C.

[0026] In a specific embodiment of the present utility model, in step S3, the temperature for removing visible substances is 5 - 30°C.

[0027] The beneficial effects of the present utility model are as follows:

[0028] 1. The device for preventing low-temperature turbidity and purifying Chinese liquor of the present utility model can remove higher fatty acid esters, odor substances, and visible substances in Chinese liquor. The equipment cost investment is relatively low. Calculated based on a processing capacity of 5 t / h, the investment cost of the purification device of the present utility model is about 150,000 yuan, and the power consumption is 7.5 degrees / h; while in the prior art, the cost investment of the freezing equipment is about 500,000 yuan, and the power consumption is 30 degrees / h. The cost investment of the purification device of the present utility model is relatively low.

[0029] 2. The present utility model has good effects in removing higher fatty acid esters, odor substances, and visible substances in Chinese liquor, and does not become turbid and has a good taste under low-temperature conditions.

[0030] 3. The present utility model controls the flow rate of Chinese liquor according to the alcohol content of Chinese liquor. The Chinese liquor after purification treatment is not turbid and has a good taste; by controlling the flow rate, it can adapt to the contents of higher fatty acid esters, odor substances, and visible substances in different alcohol contents of Chinese liquor, and these substances can come into full contact and be removed, with good purification effects.

[0031] 4. The macroporous adsorption resin and molecular sieve carbon particles of the present utility model can be regenerated and reused, and the titanium metal filter can be easily cleaned. Therefore, the materials used in the device for preventing low-temperature turbidity and purifying Chinese liquor can be recycled repeatedly, reducing the generation of waste and also being able to reduce the cost of Chinese liquor purification. Description of the Drawings

[0032] Figure 1 Structural schematic diagram of the low-temperature anti-turbidity and purification device for Baijiu provided by the specific embodiment of the present utility model;

[0033] In the attached drawings, the list of components represented by each reference numeral is as follows:

[0034] 1. Pump; 2. Macroporous resin adsorber; 3. Molecular sieve carbon filter; 4. Titanium metal filter. Specific embodiment

[0035] To make the objectives, technical solutions and advantages of the present utility model clearer, the technical solutions of the present utility model will be described in detail below. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all of the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without making creative efforts fall within the scope protected by the present utility model.

[0036] Based on the attached Figure 1 , the low-temperature anti-turbidity and purification device for Baijiu includes a macroporous resin adsorber 2, a molecular sieve carbon filter 3 and a titanium metal filter 4. The outlet of the macroporous resin adsorber 2 is communicated with the inlet of the molecular sieve carbon filter 3; the outlet of the molecular sieve carbon filter 3 is communicated with the inlet of the titanium metal filter 4; a pump 1 is provided at the inlet of the macroporous resin adsorber 2; renewable macroporous adsorption resin is filled in the macroporous resin adsorber 2; and molecular sieve carbon particles are filled in the molecular sieve carbon filter 3.

[0037] In some examples, the pump 1 is a variable-frequency control pump; the variable-frequency control pump itself has the function of stepless speed change and can adjust and control the flow rate of Baijiu base liquor according to actual needs.

[0038] In some examples, the molecular sieve carbon particles are molecular sieve coconut shell carbon mixed particles.

[0039] For the low-temperature anti-turbidity and purification device for Baijiu of the present utility model, calculated based on a processing capacity of 5 t / h, its input cost is about 150,000 yuan, and the power consumption is 7.5 degrees / h; while for the existing freezing equipment, the cost input is about 500,000 yuan, and the power consumption is 30 degrees / h. The cost input of the purification device of the present utility model is relatively low.

[0040] The low-temperature anti-turbidity and purification method for Baijiu is realized by using the above-mentioned low-temperature anti-turbidity and purification device for Baijiu, and includes the following steps:

[0041] S1: Input the Baijiu base liquor into the macroporous resin adsorber 2 through the pump 1, and adsorb and remove the higher fatty acid esters based on the macroporous adsorption resin;

[0042] S2: Input the baijiu base liquor from which the higher fatty acid esters have been removed in step S1 into the molecular sieve carbon filter 3 to remove odor substances based on the molecular sieve carbon particles;

[0043] S3: Input the baijiu base liquor from which the odor substances have been removed in step S2 into the titanium metal filter 4 to filter and remove visible matters, obtaining low-temperature resistant turbidity prevention and purified baijiu.

[0044] In some examples, in step S1, control the flow rate of the baijiu base liquor according to the reading of the baijiu base liquor.

[0045] In some examples, when the alcohol content of the baijiu base liquor ≥ 52°, control the flow rate of the baijiu base liquor at 30 m / s; when the alcohol content of the baijiu base liquor < 52° and ≥ 45°, control the flow rate of the baijiu base liquor at 20 m / s; when the alcohol content of the baijiu base liquor < 45°, control the flow rate of the baijiu base liquor at 15 m / s.

[0046] In some examples, in step S1, the temperature for removing the higher fatty acid esters is 5 - 30 °C.

[0047] In some examples, in step S2, the odor substances include any one or several of formaldehyde, acetaldehyde, furfural, and fusel oil; the odor substances also include trace odor substances released during the adsorption of higher fatty acid esters by the renewable macroporous adsorption resin, such as cross-linking agents.

[0048] In some examples, in step S2, the temperature for removing the odor substances is 5 - 30 °C.

[0049] In some examples, in step S3, the temperature for removing visible matters is 5 - 30 °C.

[0050] The following further describes the specific implementation manners of the present utility model in conjunction with embodiments, and the present utility model is not limited to the scope of the embodiments accordingly.

[0051] The same light-flavor baijiu (raw liquor) is processed in the following examples and comparative examples, with a concentration of 43.0 vol%, total acid of 0.77 g / L, and total ester of 2.13 g / L.

[0052] Examples

[0053] Under normal temperature conditions, input the raw liquor into the macroporous resin adsorber 2 by a variable-frequency control pump, and obtain the filtered liquor after passing through the molecular sieve carbon filter 3 and the titanium metal filter 4 in sequence.

[0054] Comparative Example 1

[0055] Freeze the raw liquor to -15 °C, and then filter it with the same titanium metal filter 4 as in the example to obtain the liquor.

[0056] Comparative Example 2

[0057] Under normal temperature conditions, the original wine liquid is input into a filter filled with powdered activated carbon and diatomaceous earth for filtration to obtain wine liquid.

[0058] The wine liquids of the examples and the comparative examples are frozen to -5°C for observation and sensory evaluation.

[0059] The concentrations, total acids, total esters, observation results, and the results of sensory evaluation of the original wine liquid, the wine liquids obtained from the examples and the comparative examples are statistically shown in Table 1.

[0060] Table 1

[0061]

Claims

1. White wine anti-low temperature turbidity and purification device, including macroporous resin adsorber, molecular sieve carbon filter and titanium metal filter, It is characterized in that The outlet of the macroporous resin adsorber is communicated with the inlet of the molecular sieve carbon filter; The outlet of the molecular sieve carbon filter is communicated with the inlet of the titanium metal filter; A pump is provided at the inlet of the macroporous resin adsorber; The macroporous resin adsorber is filled with a regenerable macroporous adsorption resin; The molecular sieve carbon filter is filled with molecular sieve carbon particles.

2. The device for preventing low temperature turbidity and purifying liquor according to claim 1, characterized in that: The pump is a variable frequency controlled pump.

3. The device for preventing low temperature turbidity and purifying liquor according to claim 1, characterized in that: The molecular sieve carbon particles are molecular sieve coconut shell carbon mixed particles.

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