A solid-liquid separation and squeezing process for brewing dregs

Abstract

The present invention relates to the technical field of liquor brewing, and in particular to a solid-liquid separation and squeezing process for liquor lees, which transports the lees by combining negative pressure with increased pressure, reduces oil pollution to the lees, and washes the residue, then separates sewage from alcohol to reduce alcohol waste, and then disinfects the inside of the equipment with alcohol. Simultaneously, during the sewage and alcohol separation process, gas is heated and clean water is preheated so that the clean water cleans the inside of the equipment and hot air dries the inside of the equipment. The process comprises the following steps: step one, loading; step two, squeezing; step three, discharging; step four, cleaning; step five, drying; and step six, sewage treatment.

Description

Technical Field

[0001] The invention relates to the technical field of liquor brewing, in particular to a solid-liquid separation and squeezing process for liquor dregs. Background Art

[0002] Liquor refers to a distilled liquor made from grains as the main raw materials, with large koji, small koji or bran koji and yeast as saccharification and fermentation agents, through cooking, saccharification, fermentation and distillation. During the processing of liquor, the raw materials are fermented to form lees, which need to be separated into solids and liquids. For example, the authorized patent with application number CN201410534576.6 proposes a production process for sweet rice wine fermented in large vats, which states that after the fermented mash has been left to stand for curing in step A5, the mash has no liquor smell and is squeezed with a plate and frame filter press. The filtrate is then decocted with a thin plate heat exchanger. Pour the hot liquid into the wine jar and seal the jar to make sweet glutinous rice wine. However, the existing pressing process structure is relatively simple. When pressing and feeding, most of the materials are fed through a screw pump or a gear pump, and the oil in the pump can easily penetrate into the lees, causing pollution to the lees and affecting the quality of the wine. In addition, after pressing, the sewage generated by equipment cleaning is directly discharged, which can easily pollute the surrounding environment and mix into the winery sewage pool and be treated together with other sewage in the winery, resulting in waste of alcohol in the sewage, resulting in poor practicality. Therefore, a solid-liquid separation and pressing process for winemaking lees is urgently needed. Summary of the Invention

[0003] In order to solve the above technical problems, the present invention provides a solid-liquid separation and pressing process for winemaking lees, which uses negative pressure and boost pressure to transport lees, reduce oil contamination of the lees, and wash the residue. Thereafter, the sewage and alcohol are separated to reduce alcohol waste. The equipment is then disinfected with alcohol. At the same time, during the separation process of sewage and alcohol, the gas is heated, the clean water is preheated, the clean water is used to clean the inside of the equipment, and the hot air is used to dry the inside of the equipment.

[0004] A solid-liquid separation and squeezing process for brewing dregs of the present invention comprises the following steps:

[0005] Step 1: Loading: Expel the air in the vacuum tank through the vacuum pump to form a negative pressure in the vacuum tank, extend the suction pipe into the fermentation ceramic tank, open the connecting valve between the vacuum tank and the pre-storage tank, allow the air in the pre-storage tank to enter the vacuum tank, and at the same time, suck the lees into the pre-storage tank through the suction pipe, then close the connecting valve between the vacuum tank and the pre-storage tank, and at the same time pressurize the air storage tank through the booster pump, then open the connecting valve between the air storage tank and the pre-storage tank to allow air to enter the pre-storage tank, pressurize the interior of the pre-storage tank, open the connecting valve between the pre-storage tank and the plate and frame filter press, and discharge the lees in the pre-storage tank into the filter press by pressure;

[0006] Step 2: Pressing: Press the lees through a plate and frame filter press to separate the solid and liquid;

[0007] Step 3: Discharge: During the pressing process, the filtrate is discharged for the next step. After the pressing is completed, the remaining residue is temporarily stored in the plate and frame filter press;

[0008] Step 4: Cleaning: After the discharge is completed, connect the suction pipe to the water tank and repeat the process in step 1 to discharge clean water into the pre-storage tank and the plate and frame filter press to clean the inside of the pre-storage tank and the plate and frame filter press, and rinse the residue in the plate and frame filter press to flush out the remaining alcohol in the residue. Then the plate and frame filter press discharges the residue, and then connect the suction pipe to the alcohol and repeat the process in step 1 to disinfect the pre-storage tank and the plate and frame filter press with alcohol. Then, discharge the alcohol back into the alcohol tank for recycling.

[0009] Step 5: Drying: Connect the suction pipe to the hot air delivery pipe, and discharge the hot air from the feed pipe into the pre-storage tank and the plate and frame filter press to dry the pre-storage tank and the plate and frame filter press. Then, discharge the hot air into the crushed slag to dry the slag and facilitate its storage.

[0010] Step 6. Sewage treatment: The sewage generated by the cleaning equipment is discharged into the sewage tank, and the sewage is heated to 78℃-83℃ to separate the alcohol and water in the sewage. The alcohol (containing a small amount of water) is stored, and the remaining sewage is mixed with other sewage in the winery for treatment.

[0011] Preferably, the volume of the negative pressure tank and the gas storage tank in step one is the same as the volume of the pre-storage tank, and an air filter is installed on the air inlet of the booster pump to filter impurities and water vapor in the air; reduce impurities entering the lees and improve the quality of the wine.

[0012] Preferably, in step 4, the discharged slag is crushed and stirred to reduce agglomeration in the slag.

[0013] Preferably, the water tank drain pipe in step 4 and the hot gas delivery pipe in step 5 both pass through a sewage tank, and the water in the water tank drain pipe is preheated by the temperature in the sewage tank, and the gas in the hot gas delivery pipe is heated; by using preheated water to clean the equipment, the cleaning effect is improved, and at the same time, the gas in the hot gas delivery pipe is heated by the temperature in the sewage tank, which reduces heat waste and improves the energy saving effect and practicality of the equipment.

[0014] Preferably, the alcohol used in step 4 is alcohol recovered from wastewater.

[0015] Preferably, the factory is ventilated by a fan during the pressing process to reduce the residual volatile alcohol in the factory.

[0016] Preferably, the gas in the hot air delivery pipe in step five is air filtered through an air filter.

[0017] Preferably, in step six, the sewage pipe of the sewage tank passes through the water tank, the sewage in the sewage pipe is cooled by the water in the water tank, and the water in the water tank is preheated by the sewage in the sewage pipe.

[0018] Compared with the prior art, the present invention has the following beneficial effects:

[0019] 1. By combining negative and positive pressure, the use of screw pumps and gears is reduced, the oil that penetrates into the lees is reduced, and the quality of the wine is improved;

[0020] 2. Clean the inside of the equipment with clean water and flush the slag to flush out the residual alcohol and reduce the residue in the equipment;

[0021] 3. Separate the alcohol from the sewage, store the alcohol, and use the separated alcohol to disinfect the inside of the equipment;

[0022] 4. In the process of separating alcohol from sewage, the hot air in the hot air delivery pipe and the water in the water tank drain pipe are heated to reduce heat waste. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a schematic diagram of the process structure of the present invention;

[0024] Figure 2 It is a schematic cross-sectional structure diagram of the sewage tank of the present invention;

[0025] Figure 3 It is a schematic cross-sectional structure diagram of the water tank of the present invention; DETAILED DESCRIPTION

[0026] To facilitate understanding of the present invention, the present invention will be described more fully below with reference to the accompanying drawings. The present invention can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the disclosure of the present invention more thorough and comprehensive.

[0027] Example

[0028] like Figures 1 to 3 As shown, the pressing process includes the following steps:

[0029] Step 1: Loading: Expel the air in the vacuum tank through the vacuum pump to form a negative pressure in the vacuum tank, extend the suction pipe into the fermentation ceramic tank, open the connecting valve between the vacuum tank and the pre-storage tank, allow the air in the pre-storage tank to enter the vacuum tank, and at the same time, suck the lees into the pre-storage tank through the suction pipe, then close the connecting valve between the vacuum tank and the pre-storage tank, and at the same time pressurize the air storage tank through the booster pump, then open the connecting valve between the air storage tank and the pre-storage tank to allow air to enter the pre-storage tank, pressurize the interior of the pre-storage tank, open the connecting valve between the pre-storage tank and the plate and frame filter press, and discharge the lees in the pre-storage tank into the filter press by pressure;

[0030] Step 2: Pressing: Press the lees through a plate and frame filter press to separate the solid and liquid;

[0031] Step 3: Discharge: During the pressing process, the filtrate is discharged for the next step. After the pressing is completed, the remaining residue is temporarily stored in the plate and frame filter press;

[0032] Step 4: Cleaning: After the discharge is completed, connect the suction pipe to the water tank and repeat the process in step 1 to discharge clean water into the pre-storage tank and the plate and frame filter press to clean the inside of the pre-storage tank and the plate and frame filter press, and rinse the residue in the plate and frame filter press to flush out the remaining alcohol in the residue. Then the plate and frame filter press discharges the residue, and then connect the suction pipe to the alcohol and repeat the process in step 1 to disinfect the pre-storage tank and the plate and frame filter press with alcohol. Then, discharge the alcohol back into the alcohol tank for recycling.

[0033] Step 5: Drying: Connect the suction pipe to the hot air delivery pipe, and discharge the hot air from the feed pipe into the pre-storage tank and the plate and frame filter press to dry the pre-storage tank and the plate and frame filter press. Then, discharge the hot air into the crushed slag to dry the slag and facilitate its storage.

[0034] Step 6, sewage treatment: The sewage generated by the cleaning equipment is discharged into the sewage tank, and the sewage is heated to 78℃-83℃ to separate the alcohol and water in the sewage, and the alcohol (containing a small amount of water) is stored. The remaining sewage is mixed with other sewage in the winery for treatment together; the volume of the negative pressure tank and the gas storage tank in the step 1 is the same as the volume of the pre-storage tank, and an air filter is installed on the air inlet of the booster pump to filter impurities and water vapor in the air;

[0035] In the fourth step, the discharged slag is crushed and stirred to reduce agglomeration in the slag;

[0036] In the step 4 (such as Figure 2 The water tank drain pipe and the hot gas delivery pipe in step 5 both pass through the sewage tank, and the temperature in the sewage tank is used to preheat the water in the water tank drain pipe and heat the gas in the hot gas delivery pipe;

[0037] The alcohol used in step 4 is alcohol recovered from wastewater;

[0038] During the pressing process, the factory is ventilated by fans to reduce the residual volatile alcohol in the factory;

[0039] The gas in the hot gas delivery pipe in step 5 is air filtered by an air filter;

[0040] In the step six (such as Figure 3 The sewage pipe of the sewage tank (as shown) passes through the water tank, and the sewage in the sewage pipe is cooled by the water in the water tank, and the water in the water tank is preheated by the sewage in the sewage pipe.

[0041] The solid-liquid separation and squeezing process of brewing material dregs of the present invention has common mechanical installation, connection or setting methods, which can be implemented as long as they can achieve their beneficial effects. Technical personnel in this industry only need to install and operate it according to the accompanying instruction manual, without the need for technical personnel in this field to make creative labor.

[0042] All technical and scientific terms used herein have the same meanings as those commonly understood by those skilled in the art to which the present invention pertains. The terms used in the present specification are for the purpose of describing specific embodiments only and are not intended to limit the present invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0043] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the technical principles of the present invention. These improvements and modifications should also be regarded as the scope of protection of the present invention.

Claims

1. A solid-liquid separation and squeezing process for brewing dregs, characterized in that: The steps include: Step 1: Loading: Expel the air in the vacuum tank through the vacuum pump to form a negative pressure in the vacuum tank, extend the suction pipe into the fermentation ceramic tank, open the connecting valve between the vacuum tank and the pre-storage tank, allow the air in the pre-storage tank to enter the vacuum tank, and at the same time, suck the lees into the pre-storage tank through the suction pipe, then close the connecting valve between the vacuum tank and the pre-storage tank, and at the same time pressurize the air storage tank through the booster pump, then open the connecting valve between the air storage tank and the pre-storage tank to allow air to enter the pre-storage tank, pressurize the interior of the pre-storage tank, open the connecting valve between the pre-storage tank and the plate and frame filter press, and discharge the lees in the pre-storage tank into the filter press by pressure; Step 2: Pressing: Press the lees through a plate and frame filter press to separate the solid and liquid; Step 3: Discharge: During the pressing process, the filtrate is discharged for the next step. After the pressing is completed, the remaining residue is temporarily stored in the plate and frame filter press; Step 4: Cleaning: After the discharge is completed, connect the suction pipe to the water tank and repeat the process in step 1 to discharge clean water into the pre-storage tank and the plate and frame filter press to clean the inside of the pre-storage tank and the plate and frame filter press, and rinse the residue in the plate and frame filter press to flush out the remaining alcohol in the residue. Then the plate and frame filter press discharges the residue, and then connect the suction pipe to the alcohol and repeat the process in step 1 to disinfect the pre-storage tank and the plate and frame filter press with alcohol. Then, discharge the alcohol back into the alcohol tank for recycling. Step 5: Drying: Connect the suction pipe to the hot air delivery pipe, and discharge the hot air from the feed pipe into the pre-storage tank and the plate and frame filter press to dry the pre-storage tank and the plate and frame filter press. Then, discharge the hot air into the crushed slag to dry the slag and facilitate its storage. Step 6. Sewage treatment: The sewage generated by the cleaning equipment is discharged into the sewage tank, and the sewage is heated to 78℃-83℃ to separate the alcohol and water in the sewage. The alcohol is stored and the remaining sewage is mixed with other sewage in the winery for treatment.

2. A solid-liquid separation and squeezing process for brewing dregs according to claim 1, characterized in that: The volumes of the negative pressure tank and the air storage tank in step one are the same as the volume of the pre-storage tank, and an air filter is installed on the air inlet of the booster pump to filter impurities and water vapor in the air.

3. A solid-liquid separation and squeezing process for brewing dregs according to claim 1, characterized in that: In the fourth step, the discharged slag is crushed and stirred to reduce agglomeration in the slag.

4. A solid-liquid separation and squeezing process for brewing dregs according to claim 1, characterized in that: The water tank drain pipe in step 4 and the hot gas delivery pipe in step 5 both pass through the sewage tank, and the water in the water tank drain pipe is preheated by the temperature in the sewage tank, and the gas in the hot gas delivery pipe is heated.

5. The solid-liquid separation and squeezing process for brewing dregs according to claim 1, characterized in that: The alcohol used in the step 4 is alcohol recovered from wastewater.

6. The solid-liquid separation and squeezing process for brewing dregs according to claim 1, characterized in that: During the pressing process, the factory is ventilated by fans to reduce the residual volatile alcohol in the factory.

7. The solid-liquid separation and squeezing process for brewing dregs according to claim 1, characterized in that: The gas in the hot gas delivery pipe in step 5 is air filtered by an air filter.

8. The solid-liquid separation and squeezing process for brewing dregs according to claim 1, characterized in that: In step six, the sewage pipe of the sewage tank passes through the water tank, and the sewage in the sewage pipe is cooled by the water in the water tank, and the water in the water tank is preheated by the sewage in the sewage pipe.

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