Ceramic membrane beer filtering process

Abstract

The invention discloses a ceramic membrane beer filtering technology, and relates to the technical field of beer filtering production technologies, and the technology comprises the steps of preparation work, fermentation broth feeding, fermentation broth filtering, dense turbid liquid treatment, dense turbid liquid filtering and the like. Specifically, beer fermentation liquid is filtered through a ceramic membrane in a clear liquid filtering ceramic module, clear liquid enters a rear buffer tank to be collected, and thick turbid liquid is intercepted in the clear liquid filtering ceramic module; when the concentration of the thick turbid liquid in the clear liquid filtering ceramic module is higher than a certain numerical value, the thick turbid liquid is guided into the turbid liquid filtering ceramic module through the pipeline, so that the filtering efficiency of the clear liquid filtering ceramic module on the beer fermentation liquid is ensured. The problem that a large amount of yeast is accumulated in the filtering ceramic module in the beer filtering process of the filtering ceramic module can be effectively solved, the beer filtering efficiency is improved, continuous and efficient production can be achieved, and therefore the production efficiency is improved, and the filtering ceramic module is more suitable for the large-scale beer production process.

Description

Technical Field

[0001] The present application relates to the technical field of beer filtration production technology, and in particular to a ceramic membrane beer filtration technology. Background Art

[0002] Beer filtration is an important part of improving beer quality. At present, the common beer filtration methods in China mainly include diatomaceous earth filtration and organic membrane (such as polyethersulfone) filtration. These two methods are widely used in practice and can effectively remove suspended matter and microorganisms to ensure the clarity and taste of beer. However, with the increasing demand of consumers for high-quality beer, traditional filtration methods have gradually shown some limitations, especially in terms of high efficiency, low energy consumption and environmental protection.

[0003] In order to overcome the above problems, in recent years, more and more beer manufacturers have begun to adopt ceramic membrane filtration technology to replace traditional filtration methods. Ceramic membranes have the characteristics of high temperature resistance, good chemical stability, and long service life, and can maintain stable filtration performance for a long time. Specifically, the commonly used ceramic membrane beer filtration system usually includes a front buffer tank, a filter ceramic module, a rear buffer tank and a corresponding piping system. In the actual operation process, the fermentation liquid is first sent to the front buffer tank, and then pumped into the filter ceramic module for filtration. The generated clear liquid is collected in the rear buffer tank, while the concentrated turbid liquid is retained in the filter ceramic module.

[0004] However, although ceramic membrane filtration technology performs well in many aspects, it still faces some challenges in practical applications. In particular, when filtering beer fermentation liquid, the accumulation of yeast and other solid particles in the filtering ceramic module will cause the filtration rate to decrease. At this time, the equipment needs to be shut down for cleaning, making it difficult to achieve continuous and efficient production. Therefore, how to effectively treat the concentrated turbid liquid in the filtering ceramic module and reduce the accumulation of yeast in the pipeline has become a technical problem that needs to be solved urgently in the current industry. Summary of the invention

[0005] In view of the problems existing in the prior art, the present application provides a ceramic membrane beer filtration process.

[0006] The present application provides a ceramic membrane beer filtration process, which adopts the following technical solution: A ceramic membrane beer filtration process comprises the following steps: Step 1: Preparation: assemble the front buffer tank, the rear buffer tank, the clear liquid filtration ceramic module and the turbid liquid filtration ceramic module; Step 2: feeding the fermentation liquid, sending the beer fermentation liquid into the front buffer tank; Step 3, fermentation liquid filtration, the fermentation liquid in the front buffer tank is pumped into the clear liquid filtration ceramic module, and the clear liquid is filtered out, and the clear liquid enters the rear buffer tank for collection, and the concentrated turbid liquid is retained in the clear liquid filtration ceramic module; Step 4, concentrated liquid treatment: as the filtering time progresses, the concentrated liquid concentration in the clear liquid filtering ceramic module becomes higher and higher, and the wine output speed decreases. At this time, the concentrated liquid in the clear liquid filtering ceramic module is introduced into the turbid liquid filtering ceramic module through a pipeline; Step 5, concentrated liquid filtration: After the concentrated liquid enters the concentrated liquid filtration ceramic module, it is filtered by the ceramic membrane, and the filtered clear liquid flows back to the front buffer tank through the pipeline, and the yeast in the fermentation liquid is retained in the concentrated liquid filtration ceramic module.

[0007] Optionally, the clear liquid filtration ceramic module is connected to a first circulation pipeline, both ends of which are respectively connected to the clear liquid filtration ceramic module, and the clear liquid filtration ceramic module is connected to a fermentation liquid circulation pump, which is used to make the fermentation liquid circulate between the clear liquid filtration ceramic module and the first circulation pipeline, and filter the beer fermentation liquid by utilizing the principle of cross-flow filtration.

[0008] Optionally, when the fermentation liquid circulates in the clear liquid filtering ceramic module, the fermentation liquid is controlled to flow from the bottom to the top in the clear liquid filtering ceramic module.

[0009] Optionally, the top of the clear liquid filtration ceramic module is connected to a concentrated liquid discharge pipe, the concentrated liquid discharge pipe is connected to the turbid liquid filtration ceramic module, the concentrated liquid discharge pipe is provided with a concentrated liquid outlet valve, a concentrated liquid inlet valve and a concentrated liquid supply pump, and the concentrated liquid inlet valve is arranged on the side of the concentrated liquid supply pump close to the turbid liquid filtration ceramic module; when the concentrated liquid concentration in the clear liquid filtration ceramic module reaches a certain value, the concentrated liquid outlet valve, the concentrated liquid inlet valve and the concentrated liquid supply pump are opened, and at this time, part of the concentrated liquid in the clear liquid filtration ceramic module enters the turbid liquid filtration ceramic module through the concentrated liquid discharge pipe.

[0010] Optionally, the concentrated liquid discharge pipeline is also connected to a shunt pipe, which is connected to a concentrated liquid buffer tank. The connecting end of the shunt pipe and the concentrated liquid discharge pipeline is located between the concentrated liquid outlet valve and the concentrated liquid supply pump, and a shut-off valve is arranged on the shunt pipe. When a large amount of concentrated liquid needs to be filtered, the shut-off valve can be opened to allow the concentrated liquid to pass through the shunt pipe into the concentrated liquid buffer tank for temporary storage.

[0011] Optionally, the turbid liquid filtering ceramic module is connected to a second circulation pipeline, both ends of which are respectively connected to the turbid liquid filtering ceramic module, and the turbid liquid filtering ceramic module is connected to a concentrated liquid circulation pump, which is used to circulate the concentrated liquid between the turbid liquid filtering ceramic module and the second circulation pipeline, and filter the concentrated liquid using the principle of cross-flow filtration.

[0012] Optionally, when the concentrated turbid liquid circulates in the turbid liquid filtering ceramic module, the concentrated turbid liquid is controlled to flow from the bottom to the top in the turbid liquid filtering ceramic module.

[0013] Optionally, the turbid liquid filtering ceramic module is connected to a reflux pipe, the reflux pipe is communicated with a front buffer tank, and a reflux shut-off valve is provided on the reflux pipe; the clear liquid filtered out of the turbid liquid filtering ceramic module flows back to the front buffer tank through the reflux pipe.

[0014] Optionally, the turbid liquid filtering ceramic module is provided with an emptying port for discharging yeast retained in the turbid liquid filtering ceramic module.

[0015] Optionally, the concentrated liquid buffer tank is provided with a CIP cleaning liquid inlet, the return pipe is connected with a guide pipe, the guide pipe is connected with the concentrated liquid buffer tank, the connecting end of the guide pipe and the return pipe is located between the return stop valve and the turbid liquid filtering ceramic module, and the guide pipe is provided with a return front slow valve; When the liquid outlet speed of the turbid liquid filtration ceramic module decreases, the concentrated liquid outlet valve and the reflux stop valve are closed, and the shut-off valve, the concentrated liquid inlet valve and the return slow valve are opened; at this time, the yeast trapped in the turbid liquid filtration ceramic module, the concentrated liquid buffer tank and the concentrated liquid discharge pipeline are emptied through the drain port, and the CIP cleaning liquid is introduced into the concentrated liquid buffer tank through the CIP cleaning liquid inlet; then, the CIP cleaning liquid is allowed to enter the turbid liquid filtration ceramic module through the diversion pipe and the concentrated liquid discharge pipeline through the concentrated liquid supply pump to clean the yeast remaining in the turbid liquid filtration ceramic module, and then the CIP cleaning liquid returns to the concentrated liquid buffer tank through the guide pipe.

[0016] In summary, the present application includes at least one of the following beneficial technical effects: 1. The present application can effectively solve the problem of large-scale accumulation of yeast in the filter ceramic module during the beer filtration process, improve the filtration efficiency of beer, and realize continuous and efficient production, thereby improving production efficiency, and is more suitable for large-scale beer production processes. Specifically, the beer fermentation liquid is filtered by the ceramic membrane in the clear liquid filtration ceramic module, the clear liquid enters the rear buffer tank for collection, and the concentrated liquid is retained in the clear liquid filtration ceramic module; when the concentration of the concentrated liquid in the clear liquid filtration ceramic module is higher than a certain value, resulting in a decrease in the beer filtration efficiency and a decrease in the beer output speed, the concentrated liquid in the clear liquid filtration ceramic module is introduced into the turbid liquid filtration ceramic module through a pipeline, and the clear liquid filtration ceramic module continues to filter the beer fermentation liquid, ensuring the filtration efficiency of the clear liquid filtration ceramic module on the beer fermentation liquid. After the concentrated turbid liquid entering the turbid liquid filtration ceramic module is filtered through the ceramic membrane, the clear liquid flows back to the front buffer tank through the pipeline, and the yeast in the fermentation liquid is retained in the turbid liquid filtration ceramic module. Subsequently, it is only necessary to clean the yeast retained in the turbid liquid filtration ceramic module, and there is no need to shut down the entire system for cleaning, thereby ensuring the normal operation of the system and improving production efficiency.

[0017] 2. The present application sets a first circulation pipeline on the clear liquid filtration ceramic module so that the fermentation liquid can circulate between the clear liquid filtration ceramic module and the first circulation pipeline, thereby improving the fluidity of the fermentation liquid inside the clear liquid filtration ceramic module, and using the principle of cross-flow filtration to filter the beer fermentation liquid, thereby improving the utilization rate of the ceramic membrane and the filtration efficiency of the fermentation liquid. At the same time, it can also effectively avoid clogging on the surface of the ceramic membrane. Furthermore, by controlling the flow of the fermentation liquid from the bottom to the top in the clear liquid filtration ceramic module, the contact area between the fermentation liquid and the ceramic membrane can be further increased, thereby improving the filtration efficiency of the fermentation liquid.

[0018] 3. The present application can effectively solve the problem of decreased filtration efficiency of the turbid liquid filtering ceramic module due to yeast accumulation during long-term use by setting a concentrated liquid buffer tank. Specifically, when the liquid outlet speed of the turbid liquid filtering ceramic module decreases, the yeast trapped in the turbid liquid filtering ceramic module, the concentrated liquid buffer tank, and the concentrated liquid discharge pipe is emptied through the drain port, and the CIP cleaning liquid is introduced into the concentrated liquid buffer tank through the CIP cleaning liquid inlet; then, the CIP cleaning liquid is passed through the shunt pipe and the concentrated liquid discharge pipe into the turbid liquid filtering ceramic module through the concentrated liquid supply pump to clean the yeast remaining in the turbid liquid filtering ceramic module, and the CIP cleaning liquid is returned to the concentrated liquid buffer tank through the guide pipe to achieve comprehensive cleaning of the residual yeast inside the turbid liquid filtering ceramic module, thereby restoring the filtration performance of the ceramic membrane. This design not only improves the automation level of the system and reduces the need for manual intervention, but also significantly improves the system's maintenance convenience and long-term operation stability. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a process flow chart of an embodiment of the present application.

[0020] Description of the reference numerals: 1. front buffer tank; 11. fermentation liquid inlet pipe; 12. fermentation liquid delivery pipe; 13. fermentation liquid inlet valve; 14. fermentation liquid outlet valve; 15. turbid liquor supply pump; 2. rear buffer tank; 21. clear liquid delivery pipe; 22. clear liquid outlet pipe; 23. clear liquor inlet valve; 24. clear liquor outlet valve; 25. liquor outlet valve; 3. clear liquor filtering ceramic module; 31. concentrated turbid liquid discharge pipe; 32. concentrated turbid liquid outlet valve; 33. Concentrated liquid inlet valve; 34, concentrated liquid supply pump; 35, first circulation pipeline; 36, fermentation liquid circulation pump; 37, diverter pipe; 38, shut-off valve; 4, turbid liquid filtration ceramic module; 41, reflux pipeline; 42, reflux stop valve; 43, second circulation pipeline; 44, concentrated liquid circulation pump; 45, drain port; 46, guide pipe; 47, return front slow valve; 5, concentrated liquid buffer tank; 51, CIP cleaning liquid inlet. DETAILED DESCRIPTION

[0021] The following will be combined with the attached Figure 1 , the technical solutions in the embodiments of the present invention are clearly and completely described. The described embodiments are only possible technical implementations of the present invention, not all possible implementations. Those skilled in the art can completely combine the embodiments of the present invention to obtain other embodiments without creative work, and these embodiments are also within the scope of protection of the present invention.

[0022] The inventor of the present application has found that the existing ceramic filter module will cause the filtration rate to decrease during the filtration of beer fermentation liquid due to the accumulation of yeast and other solid particles. At this time, the equipment needs to be shut down for cleaning, which makes it difficult to achieve continuous and efficient production. To this end, the present application discloses a ceramic membrane beer filtration process, which mainly adopts the following scheme: The present application embodiment discloses a ceramic membrane beer filtration process. Figure 1 , including the following steps: Step 1. Preparation The front buffer tank 1, the rear buffer tank 2, the clear liquid filtering ceramic module 3 and the turbid liquid filtering ceramic module 4 are assembled; the front buffer tank 1, the clear liquid filtering ceramic module 3 and the rear buffer tank 2 are connected in sequence through pipelines, and the turbid liquid filtering ceramic module 4 is connected to the clear liquid filtering ceramic module 3 through pipelines.

[0023] Step 2: Add fermentation liquid The beer fermentation liquid processed by the factory is sent to the front buffer tank 1 through a pipeline for storage.

[0024] Step 3: Fermentation broth filtration The fermentation liquid in the front buffer tank 1 is pumped into the clear liquid filtering ceramic module 3 through the pipeline, and the clear liquid is filtered out. The clear liquid enters the rear buffer tank 2 through the pipeline for collection, and then is transported to the subsequent pipeline for the next process, while the concentrated turbid liquid is retained in the clear liquid filtering ceramic module 3.

[0025] Step 4: Treatment of concentrated solution As the filtration time progresses, the concentration of the concentrated liquid in the clear liquid filtration ceramic module 3 becomes higher and higher, resulting in a decrease in the beer output speed. At this time, the concentrated liquid in the clear liquid filtration ceramic module 3 is introduced into the turbid liquid filtration ceramic module 4 through a pipeline; and the clear liquid filtration ceramic module 3 continues to filter the beer fermentation liquid, ensuring the filtration efficiency of the clear liquid filtration ceramic module 3 on the beer fermentation liquid.

[0026] Step 5, concentrated liquid filtration, after the concentrated liquid enters the concentrated liquid filtration ceramic module 4, it is filtered through the ceramic path, and the filtered clear liquid flows back to the front buffer tank 1 through the pipeline, while the yeast in the fermentation liquid is retained in the concentrated liquid filtration ceramic module 4. Subsequently, it is only necessary to clean the yeast retained in the concentrated liquid filtration ceramic module 4, and there is no need to shut down the entire system for cleaning, thereby ensuring the normal operation of the system and improving production efficiency.

[0027] Reference Figure 1 Specifically, the front buffer tank 1 is mainly used to receive and store beer fermentation liquid. It can be made of stainless steel with good corrosion resistance and hygienic performance. The capacity can be adjusted according to the actual needs of the production line. The front buffer tank 1 is connected with a fermentation liquid inlet pipe 11 and a fermentation liquid delivery pipe 12. The fermentation liquid delivery pipe 12 is connected with the clear liquid filtering ceramic module 3. A fermentation liquid inlet valve 13 is installed on the fermentation liquid inlet pipe 11, and a fermentation liquid outlet valve 14 is installed on the fermentation liquid delivery pipe 12; a turbid wine supply pump 15 is also installed on the fermentation liquid delivery pipe 12 for delivering beer fermentation liquid to the clear liquid filtering ceramic module 3.

[0028] Reference Figure 1 The rear buffer tank 2 is used to collect the filtered clear liquid. It can be made of stainless steel with good corrosion resistance and hygienic performance. The capacity can be adjusted according to the actual needs of the production line. The rear buffer tank 2 is connected with a clear liquid delivery pipe 21 and a clear liquid outlet pipe 22. The clear liquid delivery pipe 21 is connected with the clear liquid filtering ceramic module 3. The clear liquid delivery pipe 21 is equipped with a clear wine inlet valve 23 and a clear wine outlet valve 24. The clear wine outlet valve 24 is arranged on the side close to the clear liquid filtering ceramic module 3. The clear liquid outlet pipe 22 is equipped with a wine outlet valve 25.

[0029] Reference Figure 1The main components of the clear liquid filtration ceramic module 3 include a shell and a ceramic membrane arranged in the shell, the fermentation liquid delivery pipe 12 and the clear liquid delivery pipe 21 are respectively connected to the shell, and the connecting end of the fermentation liquid delivery pipe 12 and the shell is close to the bottom of the shell, and the connecting end of the clear liquid delivery pipe 21 and the shell is close to the top of the shell, and the connecting ends of the fermentation liquid delivery pipe 12 and the clear liquid delivery pipe 21 and the shell are arranged on both sides of the ceramic membrane. The turbid liquid filtration ceramic module 4 has the same structure as the clear liquid filtration ceramic module 3, and the difference is that the pore size of the ceramic membrane is different. Under normal circumstances, the pore size of the ceramic membrane in the turbid liquid filtration ceramic module 4 is larger than the pore size of the ceramic membrane in the clear liquid filtration ceramic module 3.

[0030] Reference Figure 1 The top of the shell of the clear liquid filtering ceramic module 3 is connected with a concentrated liquid discharge pipe 31, and the connecting end of the concentrated liquid discharge pipe 31 and the shell of the clear liquid filtering ceramic module 3 is located on the side of the ceramic membrane away from the clear liquid conveying pipe 21. The concentrated liquid discharge pipe 31 is connected with the shell of the turbid liquid filtering ceramic module 4. The concentrated liquid discharge pipe 31 is provided with a concentrated liquid outlet valve 32, a concentrated liquid inlet valve 33 and a concentrated liquid supply pump 34. The concentrated liquid supply pump 34 is arranged between the concentrated liquid outlet valve 32 and the concentrated liquid inlet valve 33, and the concentrated liquid inlet valve 33 is arranged on the side of the concentrated liquid supply pump 34 close to the turbid liquid filtering ceramic module 4. When the concentrated liquid concentration in the clear liquid filtering ceramic module 3 reaches a certain value, the concentrated liquid outlet valve 32, the concentrated liquid inlet valve 33 and the concentrated liquid supply pump 34 are opened. At this time, part of the concentrated liquid in the clear liquid filtering ceramic module 3 enters the turbid liquid filtering ceramic module 4 through the concentrated liquid discharge pipe 31.

[0031] Reference Figure 1 The clear liquid filtering ceramic module 3 is connected to a first circulation pipeline 35, one end of the first circulation pipeline 35 is connected to the concentrated liquid discharge pipeline 31, and the other end is connected to the fermentation liquid delivery pipe 12, and the connecting end of the first circulation pipeline 35 and the concentrated liquid discharge pipeline 31 is located on the side of the concentrated liquid outlet valve 32 close to the clear liquid filtering ceramic module 3, and the connecting end of the first circulation pipeline 35 and the fermentation liquid delivery pipe 12 is located on the side of the turbid wine supply pump 15 close to the clear liquid filtering ceramic module 3. A fermentation liquid circulation pump 36 is provided on the fermentation liquid delivery pipe 12 and on the side of the first circulation pipeline 35 close to the clear liquid filtering ceramic module 3, so that the fermentation liquid can circulate between the clear liquid filtering ceramic module 3 and the first circulation pipeline 35, and the beer fermentation liquid is filtered by the principle of cross-flow filtration, thereby improving the utilization rate of the ceramic membrane and the filtration efficiency of the fermentation liquid. At the same time, it can also effectively avoid clogging on the surface of the ceramic membrane. Furthermore, by controlling the fermentation liquid to flow from the bottom to the top in the clear liquid filtering ceramic module 3 through a circulation pump, the contact area between the fermentation liquid and the ceramic membrane can be further increased, thereby improving the filtering efficiency of the fermentation liquid.

[0032] Specifically, the working principle of cross-flow filtration is to use a pump to push the fermentation liquid to flow parallel to the membrane surface of the ceramic membrane. The shear force generated when the fermentation liquid flows through the membrane surface removes the particles retained on the membrane surface, thereby keeping the pollution layer at a thin level to avoid clogging. In the cross-flow filtration process, the fermentation liquid to be treated flows through the surface of the ceramic membrane instead of directly penetrating the entire membrane. A part of the fermentation liquid is filtered and purified through the ceramic membrane to become a clear liquid; while the water that does not pass through the ceramic membrane is retained in the filtration ceramic module. This part of water is called concentrated turbid liquid.

[0033] Reference Figure 1 The shell of the turbid liquid filtering ceramic module 4 is also connected to a reflux pipe 41, and the connecting end of the reflux pipe 41 and the shell of the turbid liquid filtering ceramic module 4 is located near the top of the shell, the reflux pipe 41 is connected to the front buffer tank 1, and the connecting ends of the reflux pipe 41 and the concentrated liquid discharge pipe 31 and the shell of the turbid liquid filtering ceramic module 4 are arranged on both sides of the ceramic membrane, and a reflux stop valve 42 is arranged on the reflux pipe 41; after the concentrated liquid enters the turbid liquid filtering ceramic module 4, the concentrated liquid is filtered by the ceramic membrane, and the filtered clear liquid is refluxed to the front buffer tank 1 through the reflux pipe 41, and the yeast in the fermentation liquid is retained in the turbid liquid filtering ceramic module 4 and is located on the side of the ceramic membrane close to the concentrated liquid discharge pipe 31.

[0034] Reference Figure 1 The turbid liquid filtering ceramic module 4 is connected to a second circulation pipeline 43, one end of the second circulation pipeline 43 is connected to the top of the shell of the turbid liquid filtering ceramic module 4, and the other end is connected to the concentrated liquid discharge pipeline 31, and the connecting end of the second circulation pipeline 43 and the shell of the turbid liquid filtering ceramic module 4 are both located on the side of the ceramic membrane away from the reflux pipeline 41, and the connecting end of the second circulation pipeline 43 and the concentrated liquid discharge pipeline 31 is located between the concentrated liquid inlet valve 33 and the turbid liquid filtering ceramic module 4, and a concentrated liquid circulation pump 44 is provided on the concentrated liquid discharge pipeline 31 and located on the side of the second circulation pipeline 43 close to the turbid liquid filtering ceramic module 4, so that the concentrated liquid circulates between the turbid liquid filtering ceramic module 4 and the second circulation pipeline 43, and the concentrated liquid is filtered by the principle of cross-flow filtration. And the concentrated liquid circulation pump 44 controls the concentrated liquid to flow from the bottom to the top in the turbid liquid filtering ceramic module 4, thereby increasing the contact area between the concentrated liquid and the ceramic membrane and improving the filtration efficiency of the concentrated liquid.

[0035] Reference Figure 1 The concentrated liquid discharge pipeline 31 is also connected to a shunt pipe 37, which is connected to the concentrated liquid buffer tank 5. The connecting end of the shunt pipe 37 and the concentrated liquid discharge pipeline 31 is located between the concentrated liquid outlet valve 32 and the concentrated liquid supply pump 34. A shut-off valve 38 is provided on the shunt pipe 37. When a large amount of concentrated liquid needs to be filtered, the shut-off valve 38 can be opened to allow the concentrated liquid to pass through the shunt pipe 37 and enter the concentrated liquid buffer tank 5 for temporary storage.

[0036] Reference Figure 1 A drain port 45 is provided near the bottom of the outer shell of the turbid liquid filtering ceramic module 4; the concentrated liquid buffer tank 5 is also provided with a CIP cleaning liquid inlet 51, and the reflux pipe 41 is connected with a guide pipe 46, which is connected with the concentrated liquid buffer tank 5, and the connecting end of the guide pipe 46 and the reflux pipe 41 is located on the side of the reflux stop valve 42 close to the turbid liquid filtering ceramic module 4, and a return front slow valve 47 is provided on the guide pipe 46.

[0037] When too much yeast is trapped in the turbid liquid filtering ceramic module 4, resulting in a decrease in the liquid discharge speed, the drain port 45 is opened to drain the yeast trapped in the turbid liquid filtering ceramic module 4, the concentrated liquid buffer tank 5, and the concentrated liquid discharge pipe 31, and then the drain port 45 is closed, and the CIP cleaning liquid is introduced into the concentrated liquid buffer tank 5 through the CIP cleaning liquid inlet 51; then, the CIP cleaning liquid is passed through the shunt pipe 37 and the concentrated liquid discharge pipe 31 into the turbid liquid filtering ceramic module 4 through the concentrated liquid supply pump 34, and the yeast remaining in the turbid liquid filtering ceramic module 4 is cleaned. The CIP cleaning liquid then returns to the concentrated liquid buffer tank 5 through the guide pipe 46, and the residual yeast inside the turbid liquid filtering ceramic module 4 is fully cleaned, thereby restoring the filtering performance of the ceramic membrane. This design not only improves the automation of the system and reduces the need for manual intervention, but also significantly improves the system's maintenance convenience and long-term operation stability.

[0038] Furthermore, in practical applications, any number of clear liquid filtering ceramic modules 3 and turbid liquid filtering ceramic modules 4 can be set and connected in parallel to the corresponding modules of the system. When multiple clear liquid filtering ceramic modules 3 and turbid liquid filtering ceramic modules 4 are used in parallel, each module is filtered or cleaned alternately in turn to achieve the purpose of continuous filtration.

[0039] The implementation principle of a ceramic membrane beer filtration process in the embodiment of the present application is as follows: the beer fermentation liquid is filtered through the ceramic membrane in the clear liquid filtration ceramic module 3, the clear liquid enters the rear buffer tank 2 for collection, and the concentrated liquid is retained in the clear liquid filtration ceramic module 3; when the concentration of the concentrated liquid in the clear liquid filtration ceramic module 3 is higher than a certain value, resulting in a decrease in the beer filtration efficiency and a decrease in the beer output speed, the concentrated liquid in the clear liquid filtration ceramic module 3 is introduced into the turbid liquid filtration ceramic module 4 through a pipeline, and the clear liquid filtration ceramic module 3 continues to filter the beer fermentation liquid, ensuring the filtration efficiency of the clear liquid filtration ceramic module 3 on the beer fermentation liquid. After the concentrated liquid entering the turbid liquid filtration ceramic module 4 is filtered through the ceramic membrane, the clear liquid flows back to the front buffer tank 1 through the pipeline, and the yeast in the fermentation liquid is retained in the turbid liquid filtration ceramic module 4.

[0040] When too much yeast is retained in the turbid liquid filtering ceramic module 4, resulting in a decrease in the liquid discharge speed, the drain port 45 is opened to drain the yeast and all the concentrated liquid retained in the turbid liquid filtering ceramic module 4, the concentrated liquid buffer tank 5, and the concentrated liquid discharge pipe 31. After that, the drain port 45 is closed, and the CIP cleaning liquid is introduced into the concentrated liquid buffer tank 5 through the CIP cleaning liquid inlet 51; then, the CIP cleaning liquid is allowed to enter the turbid liquid filtering ceramic module 4 through the diversion pipe 37 and the concentrated liquid discharge pipe 31 through the concentrated liquid supply pump 34, and the yeast remaining in the turbid liquid filtering ceramic module 4 is cleaned. The CIP cleaning liquid then returns to the concentrated liquid buffer tank 5 via the guide pipe 46, thereby achieving a comprehensive cleaning of the residual yeast inside the turbid liquid filtering ceramic module 4, thereby restoring the filtering performance of the ceramic membrane. The present application can effectively solve the problem of large-scale accumulation of yeast in the filter ceramic module during the beer filtration process, improve the filtration efficiency of beer, and achieve continuous and efficient production, thereby improving production efficiency and being more suitable for large-scale beer production processes.

[0041] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A ceramic membrane beer filtration process, characterized in that: The following steps are involved: Step 1: Preparation: assemble the front buffer tank (1), the rear buffer tank (2), the clear liquid filtering ceramic module (3) and the turbid liquid filtering ceramic module (4); Step 2: feeding the fermentation liquid, feeding the beer fermentation liquid into the front buffer tank (1); Step 3, filtration of the fermentation liquid, the fermentation liquid in the front buffer tank (1) is pumped into the clear liquid filtration ceramic module (3), and the clear liquid is filtered out, and the clear liquid enters the rear buffer tank (2) for collection, and the concentrated turbid liquid is retained in the clear liquid filtration ceramic module (3); Step 4, concentrated liquid treatment: as the filtering time progresses, the concentrated liquid concentration in the clear liquid filtering ceramic module (3) becomes higher and higher, and the wine output speed decreases. At this time, the concentrated liquid in the clear liquid filtering ceramic module (3) is introduced into the turbid liquid filtering ceramic module (4) through a pipeline; Step 5, filtering the concentrated liquid. After the concentrated liquid enters the concentrated liquid filtering ceramic module (4), the concentrated liquid is filtered through a ceramic membrane. The filtered clear liquid flows back to the front buffer tank (1) through a pipeline, and the yeast in the fermentation liquid is retained in the concentrated liquid filtering ceramic module (4).

2. A ceramic membrane beer filtration process according to claim 1, characterized in that: The clear liquid filtering ceramic module (3) is connected to a first circulation pipeline (35), both ends of which are respectively connected to the clear liquid filtering ceramic module (3), and the clear liquid filtering ceramic module (3) is connected to a fermentation liquid circulation pump (36) for circulating the fermentation liquid between the clear liquid filtering ceramic module (3) and the first circulation pipeline (35), thereby filtering the beer fermentation liquid by using the principle of cross-flow filtration.

3. A ceramic membrane beer filtration process according to claim 2, characterized in that: When the fermentation liquid circulates in the clear liquid filtering ceramic module (3), the fermentation liquid is controlled to flow from the bottom to the top in the clear liquid filtering ceramic module (3).

4. A ceramic membrane beer filtration process according to claim 1, characterized in that: The top of the clear liquid filtering ceramic module (3) is connected to a concentrated liquid discharge pipe (31), the concentrated liquid discharge pipe (31) is connected to the turbid liquid filtering ceramic module (4), and a concentrated liquid outlet valve (32), a concentrated liquid inlet valve (33) and a concentrated liquid supply pump (34) are arranged on the concentrated liquid discharge pipe (31), and the concentrated liquid inlet valve (33) is arranged on the side of the concentrated liquid supply pump (34) close to the turbid liquid filtering ceramic module (4); when the concentrated liquid concentration in the clear liquid filtering ceramic module (3) reaches a certain value, the concentrated liquid outlet valve (32), the concentrated liquid inlet valve (33) and the concentrated liquid supply pump (34) are opened, and at this time, part of the concentrated liquid in the clear liquid filtering ceramic module (3) enters the turbid liquid filtering ceramic module (4) through the concentrated liquid discharge pipe (31).

5. A ceramic membrane beer filtration process according to claim 4, characterized in that: The concentrated liquid discharge pipeline (31) is also connected to a shunt pipe (37), and the shunt pipe (37) is connected to a concentrated liquid buffer tank (5). The connecting end of the shunt pipe (37) and the concentrated liquid discharge pipeline (31) is located between a concentrated liquid outlet valve (32) and a concentrated liquid supply pump (34). A shut-off valve (38) is provided on the shunt pipe (37). When a large amount of concentrated liquid needs to be filtered, the shut-off valve (38) can be opened to allow the concentrated liquid to pass through the shunt pipe (37) and enter the concentrated liquid buffer tank (5) for temporary storage.

6. A ceramic membrane beer filtration process according to claim 1, characterized in that: The turbid liquid filtering ceramic module (4) is connected to a second circulation pipeline (43), both ends of which are respectively connected to the turbid liquid filtering ceramic module (4), and the turbid liquid filtering ceramic module (4) is connected to a concentrated liquid circulation pump (44) for circulating the concentrated liquid between the turbid liquid filtering ceramic module (4) and the second circulation pipeline (43), thereby filtering the concentrated liquid using the principle of cross-flow filtration.

7. A ceramic membrane beer filtration process according to claim 6, characterized in that: When the concentrated turbid liquid circulates in the turbid liquid filtering ceramic module (4), the concentrated turbid liquid is controlled to flow from the bottom to the top in the turbid liquid filtering ceramic module (4).

8. A ceramic membrane beer filtration process according to claim 5, characterized in that: The turbid liquid filtering ceramic module (4) is connected to a reflux pipe (41), the reflux pipe (41) is in communication with the front buffer tank (1), and a reflux stop valve (42) is provided on the reflux pipe (41); the clear liquid filtered out of the turbid liquid filtering ceramic module (4) flows back into the front buffer tank (1) through the reflux pipe (41).

9. A ceramic membrane beer filtration process according to claim 8, characterized in that: The turbid liquid filtering ceramic module (4) is provided with an emptying port (45) for discharging yeast trapped in the turbid liquid filtering ceramic module (4).

10. A ceramic membrane beer filtration process according to claim 9, characterized in that: The concentrated liquid buffer tank (5) is provided with a CIP cleaning liquid inlet (51), the return pipe (41) is connected with a guide pipe (46), the guide pipe (46) is connected with the concentrated liquid buffer tank (5), the connecting end of the guide pipe (46) and the return pipe (41) is located between the return stop valve (42) and the turbid liquid filtering ceramic module (4), and the guide pipe (46) is provided with a return front slow valve (47); When the liquid outlet speed of the turbid liquid filtering ceramic module (4) decreases, the concentrated liquid outlet valve (32) and the reflux stop valve (42) are closed, and the shut-off valve (38), the concentrated liquid inlet valve (33) and the return slow valve (47) are opened; at this time, the yeast retained in the turbid liquid filtering ceramic module (4), the concentrated liquid buffer tank (5) and the concentrated liquid discharge pipe (31) are emptied through the emptying port (45), and the CIP cleaning liquid is introduced into the concentrated liquid buffer tank (5) through the CIP cleaning liquid inlet (51); then, the CIP cleaning liquid is allowed to enter the turbid liquid filtering ceramic module (4) through the shunt pipe (37) and the concentrated liquid discharge pipe (31) through the concentrated liquid supply pump (34), and the yeast remaining in the turbid liquid filtering ceramic module (4) is cleaned, and then, the CIP cleaning liquid is returned to the concentrated liquid buffer tank (5) through the guide pipe (46).

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