L-asparagine fermentation liquor purification device

Abstract

The utility model relates to the technical field of fermentation liquor purification, in particular to an L-asparagine fermentation liquor purification device which comprises a purification tank and a filter membrane rod, four placement grooves which are circumferentially arranged at equal intervals are formed in an end opening of the inner wall of the upper portion of the purification tank, and a mounting plate which is of a hollow circular ring structure is jointly arranged in the four placement grooves in a sliding mode. The filter membrane rod is integrally mounted in the mounting plate, an air inlet pipe is arranged at the upper part of the filter membrane rod, a pressurizing valve for pressurizing the interior of the filter membrane rod is arranged on the outer wall of the air inlet pipe, a plurality of through holes are formed in the filter membrane rod, and ceramic membranes for filtering L-asparagine are arranged in the plurality of through holes. According to the utility model, air in the atmosphere is injected into the filtering membrane rod from the air inlet pipe through the pressurizing valve, so that L-asparagine in the filtering membrane rod flows to the outer wall of the filtering membrane rod through the ceramic membrane and then is discharged from the discharging pipe, and the condition that the L-asparagine is crystallized and separated out from fermentation liquor in a temperature control manner is avoided; and the power consumption during equipment working is reduced.

Description

Technical Field

[0001] This utility model relates to the field of fermentation broth purification technology, and in particular to a device for purifying L-asparagine fermentation broth. Background Technology

[0002] L-Asparagine is a naturally occurring non-essential amino acid and one of the 20 basic building blocks of proteins.

[0003] In the industrial production of L-asparagine, the purification of L-asparagine is usually achieved by taking advantage of its low water solubility and using temperature control to crystallize it from the fermentation broth. Before recrystallization, the fermentation broth should be pre-purified to ensure the purification effect. The pre-purification process uses an evaporator. Since different substances have different boiling points and volatility, some low-boiling-point impurities will be evaporated with the water vapor. On the other hand, it also serves to concentrate the fermentation broth. The disadvantage is that the evaporator consumes a lot of electricity when it is working, which has an adverse effect on production cost control. Therefore, a purification device that does not require electric heating was designed. Utility Model Content

[0004] The purpose of this invention is to solve the problem of excessive power consumption during the operation of evaporators in the prior art, and to propose a device for purifying the fermentation broth of L-asparagine.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A purification device for L-asparagine fermentation broth includes a purification tank and a filter membrane rod. The purification tank has four circumferentially divided placement slots at its upper inner wall port, and a hollow circular mounting plate is slidably disposed within each of the four placement slots. The filter membrane rod is integrally installed within the mounting plate. An air inlet pipe is provided at the upper part of the filter membrane rod, and a pressure valve for pressurizing the filter membrane rod is provided on the outer wall of the air inlet pipe. The filter membrane rod has multiple through holes, each containing a ceramic membrane for filtering L-asparagine.

[0007] Preferably, a fixed ring with a hollow circular structure is fixedly installed on the inner wall of the purification tank, the filter membrane rod is disposed inside the fixed ring, and four multi-stage electric telescopic rods with equal circumferences are fixedly installed at the bottom end of the fixed ring by bolts, and a moving platform is fixedly installed at the bottom end of the four multi-stage electric telescopic rods.

[0008] Preferably, a first liquid storage tank with a circular structure is fixedly installed on the upper outer wall of the purification tank, and a telescopic hose is fixedly installed on the inner wall of the purification tank, with the upper end of the telescopic hose extending into the first liquid storage tank. An installation hole is provided on the fixed ring, and the telescopic hose is disposed in the installation hole.

[0009] Preferably, the mobile platform has a flow cavity, the bottom end of the telescopic hose extends into the flow cavity, and a plurality of first nozzles are fixedly installed on the inner wall of the mobile platform, which are evenly distributed in a circle, and the first nozzles are connected to the flow cavity.

[0010] Preferably, two symmetrically arranged second liquid storage tanks are fixedly installed on the outer wall of the purification tank, and two symmetrically arranged guide pipes connected to the two second liquid storage tanks are fixedly installed on the inner wall of the purification tank. A triangular mounting block is fixedly installed at the end of the guide pipe, and a second nozzle connected to the guide pipe is fixedly installed on the inclined surface of the mounting block.

[0011] Preferably, both the first and second liquid storage tanks are equipped with water inlet pipes, and both the telescopic hose and the guide pipe are equipped with delivery pumps on their outer walls.

[0012] Preferably, the filter membrane rod has a feed inlet, and a sealing cover is provided inside the feed inlet to seal the feed inlet. Two symmetrically arranged handles are fixedly installed on the mounting plate.

[0013] Preferably, a controller is fixedly installed on the outer wall of the purification tank, and a discharge pipe is integrally installed at the bottom of the purification tank. Two symmetrically arranged support legs are fixedly installed on the purification tank.

[0014] Compared with the prior art, the present invention has the following advantages:

[0015] 1. This utility model uses a pressure valve to inject atmospheric air into the filter membrane rod through the air inlet pipe, allowing L-asparagine placed inside the filter membrane rod to flow through the ceramic membrane to the outer wall of the filter membrane rod, and then be discharged from the discharge pipe. This avoids the need to use temperature control to crystallize and precipitate L-asparagine from the fermentation broth, and reduces the power consumption of the equipment during operation.

[0016] 2. This utility model uses the cooperation of the first and second nozzles to clean the L-asparagine residue on the outer wall and bottom of the filter membrane rod, thus avoiding the waste of L-asparagine caused by the residue on the outer wall of the filter membrane rod. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the structure of a fermentation broth purification device for L-asparagine proposed in this utility model;

[0018] Figure 2 This is a schematic diagram of the mounting plate and filter membrane rod of an L-asparagine fermentation broth purification device proposed in this utility model.

[0019] Figure 3This is a front cross-sectional schematic diagram of a fermentation broth purification device for L-asparagine proposed in this utility model;

[0020] Figure 4 This is a schematic diagram of the purification tank and placement tank of an L-asparagine fermentation broth purification device proposed in this utility model.

[0021] In the diagram: 1. Purification tank; 2. Placement trough; 3. Mounting plate; 4. Handle; 5. Filter membrane rod; 6. Sealing cover; 7. Air inlet pipe; 8. Pressure valve; 9. Ceramic membrane; 10. Fixing ring; 11. Multi-stage electric telescopic rod; 12. Moving platform; 13. First liquid storage tank; 14. Telescopic hose; 15. First nozzle; 16. Controller; 17. Second liquid storage tank; 18. Guide pipe; 19. Mounting block; 20. Second nozzle; 21. Discharge pipe; 22. Support leg. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0023] Reference Figures 1-4 A fermentation broth purification device for L-asparagine includes a purification tank 1 and a filter membrane rod 5. Four equally spaced placement slots 2 are provided at the upper inner wall of the purification tank 1, and a hollow ring-shaped mounting plate 3 is slidably installed within each of the four placement slots 2 to limit and position the mounting plate 3. The filter membrane rod 5 is integrally installed within the mounting plate 3, allowing it to be pulled out of the purification tank 1 by pulling the mounting plate 3 with a handle 4. An air inlet pipe 7 is provided at the upper part of the filter membrane rod 5, and a pressure valve 8 is provided on the outer wall of the air inlet pipe 7 to pressurize the filter membrane rod 5. Multiple through holes are provided on the filter membrane rod 5, and each through hole contains a ceramic membrane 9 for filtering L-asparagine. L-asparagine is a small molecule and usually permeates through the ceramic membrane 9, while some large molecular impurities in the fermentation broth, such as proteins and polysaccharides, are retained by the ceramic membrane 9, thereby extracting L-asparagine.

[0024] A hollow circular ring 10 is integrally fixed to the inner wall of the purification tank 1. The filter membrane rod 5 is placed inside the fixed ring 10. Four multi-stage electric telescopic rods 11 are fixedly installed at the bottom of the fixed ring 10 by bolts. The bottom of the four multi-stage electric telescopic rods 11 are all fixedly installed with a moving platform 12. The moving platform 12 is driven by the bottom of the multi-stage electric telescopic rods 11 to move up and down, so that the first nozzle 15 can fully clean the outer wall of the filter membrane rod 5 and avoid the residue of L-asparagine.

[0025] A first storage tank 13 with a circular mechanism is fixedly installed on the upper outer wall of the purification tank 1. A telescopic hose 14 is fixedly installed on the inner wall of the purification tank 1. The bottom end of the telescopic hose 14 moves with the movement of the moving platform 12, so that the water in the first storage tank 13 is continuously transported to the flow chamber in the moving platform 12, so that the first nozzle 15 continuously sprays the outer wall of the filter membrane rod 5. The upper end of the telescopic hose 14 extends into the first storage tank 13. The fixing ring 10 has an installation hole, and the telescopic hose 14 is set in the installation hole.

[0026] The movable platform 12 has a flow cavity, and the bottom end of the telescopic hose 14 extends into the flow cavity. Multiple first nozzles 15 are fixedly installed on the inner wall of the movable platform 12, and the first nozzles 15 are connected to the flow cavity.

[0027] Two symmetrically arranged second liquid storage tanks 17 are fixedly installed on the outer wall of the purification tank 1. Two symmetrically arranged guide pipes 18 are fixedly installed on the inner wall of the purification tank 1 and are respectively connected to the two second liquid storage tanks 17. A triangular mounting block 19 is fixedly installed at the end of the guide pipe 18. A second nozzle 20 connected to the guide pipe 18 is fixedly installed on the inclined surface of the mounting block 19.

[0028] Both the first liquid storage tank 13 and the second liquid storage tank 17 are equipped with water inlet pipes. The outer walls of the telescopic hose 14 and the guide pipe 18 are equipped with delivery pumps. The filter membrane rod 5 has a feed inlet. A sealing cover plate 6 is installed inside the feed inlet to seal the feed inlet. Two symmetrically arranged handles 4 are fixedly installed on the mounting plate 3.

[0029] A controller 16 is fixedly installed on the outer wall of the purification tank 1. The controller 16 synchronously controls the extension and retraction of four multi-stage electric telescopic rods 11 to ensure the linear up and down movement of the moving platform 12. A discharge pipe 21 is integrally installed at the bottom of the purification tank 1. Two symmetrically arranged support legs 22 are fixedly installed on the purification tank 1.

[0030] It should be noted that the specific model and specifications of the multi-stage electric telescopic pole 11 and controller 16 need to be selected and determined according to the actual specifications of the device. The specific selection calculation method adopts the existing technology in this field, so it will not be elaborated here.

[0031] The functional principle of this utility model can be explained through the following operation methods:

[0032] In use, by opening the sealing cover 6, the fermentation broth is fed into the filter membrane rod 5 through the feed inlet on the filter membrane rod 5. The feed inlet is sealed by the sealing cover 6 to prevent air from flowing out from the feed inlet. The pressure valve 8 is opened to allow air to flow into the filter membrane rod 5 through the air inlet pipe 7. The air flowing out of the ceramic membrane 9 is less than the air supplied to the filter membrane rod 5 by the pressure valve 8, which increases the pressure inside the filter membrane rod 5. Through the pressure difference between the inside and outside of the filter membrane rod 5, L-asparagine flows out from the ceramic membrane 9, and L-asparagine is screened. The screened L-asparagine flows out from the discharge pipe 21.

[0033] After the L-asparagine in the filter rod 5 is screened out, some L-asparagine will remain on the outer wall of the filter rod 5. Water in the first storage tank 13 is transported to the flow chamber in the moving platform 12 by the delivery pump and sprayed onto the outer wall of the filter rod 5 from the first nozzle 15. The controller 16 synchronously controls the four multi-stage electric telescopic rods 11 to extend and retract, so that the moving platform 12 drives multiple first nozzles 15 to move up and down to clean the L-asparagine remaining on the outer wall of the filter rod 5.

[0034] The water in the second storage tank 17 is circulated from the second nozzle 20 through the delivery pump installed on the guide pipe 18. The water is then sprayed from the inclined second nozzle 20 onto the bottom of the filter membrane rod 5 to clean the L-asparagine residue at the bottom of the filter membrane rod 5 and avoid waste of L-asparagine.

[0035] When the outer wall of the filter membrane rod 5 is cleaned, the filter membrane rod 5 is pulled out of the purification tank 1 by the two handles and four mounting plates 3, which facilitates the subsequent cleaning of the fermentation liquid remaining in the filter membrane rod 5.

[0036] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A fermentation broth purification apparatus for L-asparagine, comprising a purification tank (1) and a filter membrane rod (5), characterized in that, The purification tank (1) has four circumferentially divided placement slots (2) at the upper inner wall port, and a hollow ring structure mounting plate (3) is slidably arranged in the four placement slots (2). The filter membrane rod (5) is integrally installed in the mounting plate (3). An air inlet pipe (7) is provided on the upper part of the filter membrane rod (5). A pressure valve (8) for pressurizing the filter membrane rod (5) is provided on the outer wall of the air inlet pipe (7). The filter membrane rod (5) has multiple through holes, and a ceramic membrane (9) for filtering L-asparagine is provided in each of the multiple through holes.

2. The apparatus for purifying the fermentation broth of L-asparagine according to claim 1, characterized in that, The purification tank (1) has a fixed ring (10) with a hollow circular structure fixedly installed on its inner wall. The filter membrane rod (5) is set inside the fixed ring (10). The bottom end of the fixed ring (10) is fixedly installed with four multi-stage electric telescopic rods (11) that are evenly distributed around the circumference, and the bottom ends of the four multi-stage electric telescopic rods (11) are all fixedly installed with a moving platform (12).

3. The apparatus for purifying the fermentation broth of L-asparagine according to claim 2, characterized in that, The purification tank (1) has a first liquid storage tank (13) with a circular structure fixedly installed on the upper outer wall. The purification tank (1) has a telescopic hose (14) fixedly installed on the inner wall, and the upper end of the telescopic hose (14) extends into the first liquid storage tank (13). The fixing ring (10) has an installation hole, and the telescopic hose (14) is placed in the installation hole.

4. The apparatus for purifying the fermentation broth of L-asparagine according to claim 3, characterized in that, The mobile platform (12) has a flow cavity, and the bottom end of the telescopic hose (14) extends into the flow cavity. Multiple first nozzles (15) are fixedly installed on the inner wall of the mobile platform (12) and are evenly distributed in a circle. The first nozzles (15) are connected to the flow cavity.

5. The apparatus for purifying the fermentation broth of L-asparagine according to claim 4, characterized in that, The purification tank (1) has two symmetrically arranged second liquid storage tanks (17) fixedly installed on its outer wall. The purification tank (1) has two symmetrically arranged guide pipes (18) fixedly installed on its inner wall and connected to the two second liquid storage tanks (17) respectively. The end of the guide pipe (18) is fixedly installed with a triangular mounting block (19). The inclined surface of the mounting block (19) is fixedly installed with a second nozzle (20) connected to the guide pipe (18).

6. The apparatus for purifying the fermentation broth of L-asparagine according to claim 5, characterized in that, Both the first liquid storage tank (13) and the second liquid storage tank (17) are equipped with water inlet pipes, and both the telescopic hose (14) and the guide pipe (18) are equipped with delivery pumps on their outer walls.

7. The apparatus for purifying the fermentation broth of L-asparagine according to claim 6, characterized in that, The filter membrane rod (5) has a feed inlet, and a sealing cover plate (6) is provided inside the feed inlet to seal the feed inlet. Two symmetrically arranged handles (4) are fixedly installed on the mounting plate (3).

8. The apparatus for purifying the fermentation broth of L-asparagine according to claim 7, characterized in that, The purification tank (1) is fixedly installed with a controller (16) on its outer wall, and a discharge pipe (21) is integrally installed at the bottom of the purification tank (1). Two symmetrically arranged support legs (22) are fixedly installed on the purification tank (1).

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