Sugar feeding and supplementing device for amino acid fermentation tank

Abstract

The utility model provides a fed-batch sugar supplementing device of an amino acid fermentation tank, and belongs to the technical field of fed-batch sugar supplementing of the amino acid fermentation tank. The problem of different sugar concentrations in the area closer to the feeding point and relatively farther from the feeding point during feeding sugar feeding of the existing amino acid fermentation tank is solved. The sugar supplementing device comprises an upper sugar supplementing mechanism, a bottom sugar supplementing mechanism, a stirring mechanism and an air supply mechanism, the upper sugar supplementing mechanism comprises an upper sugar supplementing pipeline and a binary atomizing nozzle, the binary atomizing nozzle is arranged at the outlet end of the upper sugar supplementing pipeline, and the bottom sugar supplementing mechanism comprises a bottom sugar supplementing pipeline, a compression type atomizer, an atomizing pipeline and a circular ring distributor. The stirring mechanism is arranged in the fermentation tank, the binary atomization nozzle is arranged above the stirring mechanism, the circular ring distributor is arranged below the stirring mechanism, and the air supply mechanism comprises an air supply main pipeline, an upper air supply pipeline and a bottom air supply pipeline. The method is mainly used for producing zero-sugar fermentation amino acids such as threonine, tryptophan and the like.

Description

TECHNICAL FIELD

[0001] The utility model belongs to amino acid fermentation tank flow adds sugar material supplementing technical field, especially relates to a kind of amino acid fermentation tank flow adds sugar material supplementing device. BACKGROUND

[0002] At present, amino acid fermentation tank flow adds sugar material supplementing mode is directly into fermentation tank by pressure tank pressurization method, then disperses in fermentation broth by the flow field force of stirring, the content of sugar is detected from different positions of fermentation tank, it is found that the sugar concentration is higher near the material supplementing point, because amino acid fermentation tank controls zero sugar fermentation operation, there is the sugar concentration difference between the area close to material supplementing point and the area relatively far, such as in the stirring speed that has not been suitable for industrial production amplification operation, sugar concentration is too high to cause metabolic pathway change, increase the output of acetic acid and other amino acids, and concentration is too low to cause the output reduction of main metabolite. CONTENT OF UTILITY MODEL

[0003] Therefore, the utility model aims at providing a kind of amino acid fermentation tank flow adds sugar material supplementing device to solve the problem of the sugar concentration difference between the area close to material supplementing point and the area relatively far when the amino acid fermentation tank flow adds sugar material supplementing.

[0004] To achieve the above object, the utility model adopts the following technical scheme: a kind of amino acid fermentation tank flow adds sugar material supplementing device, it includes upper sugar supplementing mechanism, bottom sugar supplementing mechanism, stirring mechanism and air supply mechanism, the upper sugar supplementing mechanism includes upper sugar supplementing pipeline and binary atomizing nozzle, the binary atomizing nozzle is arranged at the export end of upper sugar supplementing pipeline, the bottom sugar supplementing mechanism includes bottom sugar supplementing pipeline, compression type atomizer, atomizing pipeline and circular ring distributor, the export end of bottom sugar supplementing pipeline is connected with the liquid inlet of compression type atomizer, the mist outlet of compression type atomizer is communicated with circular ring distributor by atomizing pipeline, the binary atomizing nozzle and circular ring distributor are all arranged in the inside of fermentation tank, the stirring mechanism is arranged in the inside of fermentation tank, the binary atomizing nozzle is arranged above the stirring mechanism, the circular ring distributor is arranged below the stirring mechanism, the air supply mechanism includes air supply main pipeline, upper air supply pipeline and bottom air supply pipeline, the import end of upper air supply pipeline and bottom air supply pipeline import end are all connected with the export end of air supply main pipeline, the export end of upper air supply pipeline is connected with binary atomizing nozzle, the export end of bottom air supply pipeline is connected with the air inlet of compression type atomizer.

[0005] Further, the stirring mechanism includes stirring shaft, turbine stirring paddle and three groups of propelling paddles, the stirring shaft is vertically and rotationally arranged in fermentation tank, the three groups of propelling paddles are sequentially and spacedly arranged on the stirring shaft from top to bottom, the turbine stirring paddle is connected with the bottom of stirring shaft, the binary atomizing nozzle is arranged above the propelling paddle at top, and the circular ring distributor is arranged below the turbine stirring paddle.

[0006] Further, the first adjusting valve, the first air filter and the second air filter are sequentially arranged on the air supply main pipeline along the flow direction.

[0007] Further, the second air filter is provided with a pressure transmitter.

[0008] Further, the first switch valve is arranged on the upper air supply pipeline.

[0009] Further, the second switch valve is arranged on the bottom air supply pipeline.

[0010] Further, the third switch valve, the first flow meter and the second adjusting valve are sequentially arranged on the upper sugar supplement pipeline along the flow direction.

[0011] Further, the fourth switch valve, the second flow meter and the third adjusting valve are sequentially arranged on the bottom sugar supplement pipeline along the flow direction.

[0012] Further, the compression type atomizer comprises an atomizer body, a suction pipe and a partition plate, the bottom of the atomizer body is provided with an air inlet, one side of the atomizer body is provided with a liquid inlet, the top of the atomizer body is provided with a mist outlet, a reducing pipe is arranged at the air inlet and arranged in the inner cavity of the atomizer body, the outer side of the reducing pipe is provided with the suction pipe, the top of the suction pipe is provided with a nozzle, the nozzle is provided with the partition plate above, and the bottom of the suction pipe is communicated with the bottom of the inner cavity of the atomizer body.

[0013] Further, a plurality of small holes are uniformly and spacedly arranged on the top end of the circular ring distributor in the circumferential direction.

[0014] Compared with the prior art, the amino acid fermentation tank flow feeding and material supplementing device has the advantages that the binary atomizing nozzle and the circular ring distributor are arranged above and below the stirring mechanism respectively, the flow feeding sugar is sprayed to the stirring center at the top and the bottom of the stirring mechanism through the binary atomizing nozzle and the circular ring distributor respectively, and the supplement is rapidly diffused through the stirring at the top and the bottom of the stirring mechanism, so that the concentration difference is reduced around the supplement point compared with other areas, and the amino acid fermentation metabolic product accumulation is facilitated. BRIEF DESCRIPTION OF DRAWINGS

[0015] The accompanying drawings, which form a part of this application, are included to provide a further understanding of the application and are incorporated in and constitute a part of this application. The embodiments illustrated in the drawings are provided to explain embodiments of the present application and not to limit the present application. In the drawings:

[0016] Fig. 1 It is a whole structure schematic view of the amino acid fermentation tank flow feeding and material supplementing device.

[0017] Fig. 2 The structural diagram of the compression type atomizer in the amino acid fermentation tank flow feeding sugar feeding device is shown in the utility model.

[0018] Fig. 3 The velocity cloud chart after the CFD simulation of the fermentation tank in the amino acid fermentation tank flow feeding sugar feeding device is shown in the utility model.

[0019] 1 - upper sugar feeding pipe, 2 - binary atomizing nozzle, 3 - bottom sugar feeding pipe, 4 - compression type atomizer, 5 - atomizing pipe, 6 - circular ring distributor, 7 - fermentation tank, 8 - air supply main pipe, 9 - upper air supply pipe, 10 - bottom air supply pipe, 11 - stirring shaft, 12 - propeller, 13 - turbine stirring paddle, 14 - first regulating valve, 15 - second regulating valve, 16 - third regulating valve, 17 - first air filter, 18 - second air filter, 19 - pressure transmitter, 20 - first on-off valve, 21 - second on-off valve, 22 - third on-off valve, 23 - fourth on-off valve, 24 - first flow meter, 25 - second flow meter, 26 - suction pipe, 27 - spacer, 28 - variable diameter pipe, 29 - nozzle. DETAILED DESCRIPTION

[0020] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. It should be noted that the embodiments in the utility model and the features in the embodiments can be combined with each other without conflict, and the described embodiments are only part of the embodiments of the utility model, not all the embodiments.

[0021] Referring to Figs. 1-3The application discloses a feeding device for a fermentation tank of amino acids, which comprises upper sugar feeding mechanism, bottom sugar feeding mechanism, stirring mechanism and air feeding mechanism. The upper sugar feeding mechanism comprises an upper sugar feeding pipeline 1 and a binary atomizing nozzle 2, the binary atomizing nozzle 2 is arranged at the outlet end of the upper sugar feeding pipeline 1, the bottom sugar feeding mechanism comprises a bottom sugar feeding pipeline 3, a compression atomizer 4, an atomizing pipeline 5 and a circular ring distributor 6, the outlet end of the bottom sugar feeding pipeline 3 is connected with the liquid inlet of the compression atomizer 4, the mist outlet of the compression atomizer 4 is communicated with the circular ring distributor 6 through the atomizing pipeline 5, the binary atomizing nozzle 2 and the circular ring distributor 6 are arranged in the fermentation tank 7, the stirring mechanism is arranged in the fermentation tank 7, the binary atomizing nozzle 2 is arranged above the stirring mechanism, the circular ring distributor 6 is arranged below the stirring mechanism, the air feeding mechanism comprises an air feeding main pipeline 8, an upper air feeding pipeline 9 and a bottom air feeding pipeline 10, the inlet end of the upper air feeding pipeline 9 and the inlet end of the bottom air feeding pipeline 10 are connected with the outlet end of the air feeding main pipeline 8, the outlet end of the upper air feeding pipeline 9 is connected with the binary atomizing nozzle 2, and the outlet end of the bottom air feeding pipeline 10 is connected with the air inlet of the compression atomizer 4.

[0022] The stirring mechanism comprises a stirring shaft 11, turbine stirring paddles 13 and three groups of propeller paddles 12, the stirring shaft 11 is vertically and rotatably arranged in the fermentation tank 7, the three groups of propeller paddles 12 are sequentially and spacedly arranged on the stirring shaft 11 from top to bottom, the turbine stirring paddles 13 are connected with the bottom of the stirring shaft 11, the binary atomizing nozzle 2 is arranged above the propeller paddle 12 at the top, and the circular ring distributor 6 is arranged below the turbine stirring paddles 13. Fig. 3 The stirring flow field of the fermentation tank 7 is analyzed by taking a speed cloud diagram, the point with the fastest flow field speed is found, the flow field speed is greater than 3 m / s, and the rapid diffusion of the feeding sugar is facilitated, and in the embodiment, the uppermost blade and the bottommost blade are selected as the best sugar feeding points.

[0023] The distance between the binary atomizing nozzle 2 and the circular ring distributor 6 is not more than 6 meters, so that the diffusion distance of the feeding sugar in the fermentation tank 7 reaches 3 meters within 1 second.

[0024] The air feeding main pipeline 8 is sequentially provided with a first adjusting valve 14, a first air filter 17 and a second air filter 18 along the flowing direction, the second air filter 18 is provided with a pressure transmitter 19, the first air filter 17 and the second air filter 18 ensure the sterility of the process air, the first adjusting valve 14 and the pressure transmitter 19 are connected in interlock to automatically control the flow of the process air in the air feeding main pipeline 8.

[0025] The upper air feeding pipeline 9 is provided with a first on-off valve 20, and the first on-off valve 20 is used for controlling the opening and closing of the upper air feeding pipeline 9.

[0026] The bottom air supply pipeline 10 is provided with a second switch valve 21 for controlling the opening and closing of the bottom air supply pipeline 10.

[0027] The upper sugar supplement pipeline 1 is provided with a third switch valve 22, a first flow meter 24 and a second regulating valve 15 in sequence along the flow direction, the third switch valve 22 is used for controlling the opening and closing of the upper sugar supplement pipeline 1, the first flow meter 24 and the second regulating valve 15 are used for measuring and adjusting the flow of the upper sugar supplement pipeline 1 respectively, and the first flow meter 24 and the second regulating valve 15 are automatically controlled in interlocking.

[0028] The bottom sugar supplement pipeline 3 is provided with a fourth switch valve 23, a second flow meter 25 and a third regulating valve 16 in sequence along the flow direction, the fourth switch valve 23 is used for controlling the opening and closing of the bottom sugar supplement pipeline 3, the second flow meter 25 and the third regulating valve 16 are used for measuring and adjusting the flow of the bottom sugar supplement pipeline 3 respectively, and the second flow meter 25 and the third regulating valve 16 are automatically controlled in interlocking.

[0029] The compression type atomizer 4 comprises an atomizer body, a suction pipe 26 and a partition sheet 27, the bottom of the atomizer body is provided with an air inlet, one side of the atomizer body is provided with a liquid inlet, the top of the atomizer body is provided with a mist outlet, a reducing pipe 28 is arranged at the air inlet, the reducing pipe 28 is arranged in the inner cavity of the atomizer body, the outer side of the reducing pipe 28 is provided with the suction pipe 26, the top of the suction pipe 26 is provided with a nozzle 29, the partition sheet 27 is arranged above the nozzle 29 in a spaced manner, and the bottom of the suction pipe 26 is in communication with the bottom of the inner cavity of the atomizer body, the atomization principle of the compression type atomizer 4 is that compressed air formed by the compressed process wind passes through the small pipe opening of the reducing pipe 28 to form a high-speed airflow, the negative pressure generated by the high-speed airflow drives the sugar liquid in the atomizer body to be sprayed together with the suction pipe 26 and the nozzle 29 to the partition sheet 27, the sugar liquid is splashed around under high-speed impact, the liquid droplets become mist, and then enter the circular ring distributor 6.

[0030] A plurality of small holes are uniformly and spaced apart in the circumferential direction at the top end of the circular ring distributor 6, the sugar added after being atomized by the compression type atomizer 4 is sprayed to the stirring center of the bottom layer of the stirring mechanism through the small holes, the number and angle of the small holes can be adjusted adaptively according to the actual diffusion needs, the diameter of the circular ring in the embodiment is 20% smaller than the diameter of the bottom layer of the stirring, the number of the small holes is six, and the atomization angles are all upward, of which three are inward by 45°, and the other three are vertically upward by 90°.

[0031] The upper sugar supplementing mode in the embodiment is that the third switch valve 22 is opened, the first flow meter 24 and the second regulating valve 15 are set to automatically control the flow of the added sugar in the upper sugar supplementing pipeline 1, then the first switch valve 20 is opened, the first regulating valve 14 and the pressure transmitter 19 are set to automatically control the flow of the process air in the air supply main pipeline 8, the added sugar and the process air enter the binary atomizing nozzle 2 at the same time, are sprayed at the upper stirring center position of the stirring mechanism, are rapidly diffused by the strongest speed of the stirring center, the concentration difference is generated between the surrounding of the sugar supplementing point and other areas, which is beneficial to the accumulation of the amino acid fermentation metabolites.

[0032] The bottom sugar supplementing mode in the embodiment is that the fourth switch valve 23 is opened, the second flow meter 25 and the third regulating valve 16 are set to automatically control the flow of the added sugar in the bottom sugar supplementing pipeline 3, then the second switch valve 21 is opened, the first regulating valve 14 and the pressure transmitter 19 are set to automatically control the flow of the process air in the air supply main pipeline 8, the added sugar and the process air are atomized in the compression atomizer 4, then are sprayed and diffused upwards through the small holes of the circular ring distributor 6, are rapidly diffused to the surrounding under the stirring of the stirring mechanism, the concentration difference is generated between the surrounding of the sugar supplementing point and other areas, which is beneficial to the accumulation of the amino acid fermentation metabolites.

[0033] The two sugar supplementing modes in the embodiment can be used at the same time or separately according to different fermentation periods.

[0034] The amino acid fermentation tank sugar supplementing device in the embodiment is mainly suitable for the production of threonine, tryptophan and other zero sugar fermentation amino acids.

[0035] The above disclosed embodiments of the utility model are only used for helping to set forth the utility model. The embodiments do not describe all the details, and the utility model is not limited to the specific implementation mode. According to the content of the specification, many modifications and changes can be made. The specification selects and specifically describes these embodiments, in order to better explain the principle and practical application of the utility model, so that the person skilled in the art can well understand and utilize the utility model.

Claims

1. An amino acid fermenter sugar feeding device, characterized by: It includes upper sugar supplement mechanism, bottom sugar supplement mechanism, stirring mechanism and air supply mechanism, the upper sugar supplement mechanism includes upper sugar supplement pipeline (1) and binary atomizing nozzle (2), the binary atomizing nozzle (2) is arranged at the outlet end of upper sugar supplement pipeline (1), the bottom sugar supplement mechanism includes bottom sugar supplement pipeline (3), compression type atomizer (4), atomizing pipeline (5) and circular ring distributor (6), the outlet end of bottom sugar supplement pipeline (3) is connected with the liquid inlet of compression type atomizer (4), the mist outlet of compression type atomizer (4) is communicated with circular ring distributor (6) through atomizing pipeline (5), the binary atomizing nozzle (2) and circular ring distributor (6) are arranged in the inside of fermentation tank (7), the stirring mechanism is arranged in the inside of fermentation tank (7), the binary atomizing nozzle (2) is arranged above the stirring mechanism, the circular ring distributor (6) is arranged below the stirring mechanism, the air supply mechanism includes air supply main pipeline (8), upper air supply pipeline (9) and bottom air supply pipeline (10), the inlet end of upper air supply pipeline (9) and the inlet end of bottom air supply pipeline (10) are connected with the outlet end of air supply main pipeline (8), the outlet end of upper air supply pipeline (9) is connected with binary atomizing nozzle (2), the outlet end of bottom air supply pipeline (10) is connected with the air inlet of compression type atomizer (4).

2. The device according to claim 1, wherein: The stirring mechanism includes stirring shaft (11), turbine stirring paddle (13) and three groups of propelling paddles (12), the stirring shaft (11) is vertically and rotatably arranged in fermentation tank (7), the three groups of propelling paddles (12) are sequentially and spacedly arranged on stirring shaft (11) from top to bottom, the turbine stirring paddle (13) is connected with the bottom of stirring shaft (11), the binary atomizing nozzle (2) is arranged above the propelling paddle (12) at top, and the circular ring distributor (6) is arranged below the turbine stirring paddle (13).

3. The device according to claim 1, wherein: The first adjusting valve (14), the first air filter (17) and the second air filter (18) are sequentially arranged on the air supply main pipeline (8) along the flow direction.

4. The device according to claim 3, wherein: The pressure transmitter (19) is arranged on the second air filter (18).

5. The device according to claim 1, wherein: The first switch valve (20) is arranged on the upper air supply pipeline (9).

6. The device according to claim 1, wherein: The second switch valve (21) is arranged on the bottom air supply pipeline (10).

7. The device according to claim 1, wherein: The third switch valve (22), the first flowmeter (24) and the second adjusting valve (15) are sequentially arranged on the upper sugar supplement pipeline (1) along the flow direction.

8. The device according to claim 1, wherein: The fourth switch valve (23), the second flowmeter (25) and the third adjusting valve (16) are sequentially arranged on the bottom sugar supplement pipeline (3) along the flow direction.

9. The device according to claim 1, wherein: The compression type atomizer (4) comprises an atomizer body, a suction pipe (26) and a partition sheet (27), the bottom of the atomizer body is provided with an air inlet, one side of the atomizer body is provided with a liquid inlet, the top of the atomizer body is provided with a mist outlet, a reducing pipe (28) is arranged at the air inlet, the reducing pipe (28) is arranged in the inner cavity of the atomizer body, the outer side of the reducing pipe (28) is provided with the suction pipe (26), the top of the suction pipe (26) is provided with a nozzle (29), the nozzle (29) is provided with the partition sheet (27) in an interval manner above, and the bottom of the suction pipe (26) is communicated with the bottom of the inner cavity of the atomizer body.

10. The device according to claim 1, wherein: The top end of the circular ring distributor (6) is provided with a plurality of small holes which are uniformly and spaced apart in the circumferential direction.

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