Cooling recovery device for reducing volatilization of fermentation liquor on fermentation tank

Abstract

The utility model relates to the technical field of fermentation of clostridium tetani, in particular to a cooling recovery device for reducing volatilization of fermentation liquor on a fermentation tank, which comprises the fermentation tank and a condensation recovery device, the condensation recovery device is obliquely arranged above the fermentation tank; the condensation recovery device comprises an external stainless steel shell and an internal thin stainless steel pipe, the stainless steel shell is hermetically connected with the outer wall of the internal thin stainless steel pipe, and a space for storing cooling water is formed between the stainless steel shell and the internal thin stainless steel pipe; the lower end of the thin stainless steel pipe is communicated with the fermentation tank; and fermentation liquor steam circulates in the thin stainless steel pipe. According to the utility model, through the condensation recovery device, fermentation liquor steam generated in the fermentation process can be effectively captured and condensed, so that the volatilization loss of fermentation liquor is reduced; the consumption of raw materials can be reduced, so that the overall production cost is reduced; in addition, due to the fact that volatilization of the fermentation liquor is reduced, the volume of the fermentation liquor in different batches is more stable, and consistency and repeatability of the fermentation process can be guaranteed.

Description

Technical Field

[0001] The utility model relates to the technical field of clostridium tetani fermentation, in particular to a cooling recovery device on a fermentation tank for reducing the volatilization of fermentation liquid. Background Art

[0002] In the process of producing tetanus toxoid stock solution, the fermentation process of Clostridium tetani is usually carried out at 35°C for 60 to 96 hours. Due to the long fermentation period, the volatilization of the fermentation broth is inevitable, which not only leads to the loss of raw materials and reduces the fermentation efficiency, but also leads to inaccurate formaldehyde addition because the volume of formaldehyde added later is calculated based on the volume of the fermentation broth before volatilization.

[0003] Therefore, reducing the volatilization of fermentation broth is crucial to improving production efficiency and product quality. It is necessary to design a cooling and recovery device that reduces the volatilization of fermentation broth to stabilize the volume of fermentation broth. Utility Model Content

[0004] The purpose of the utility model is to provide a cooling and recovery device for reducing the volatilization of fermentation liquid, which is used to recover the volatilized fermentation liquid at the exhaust port position on the top of the fermentation tank, reduce the volatilization of the fermentation liquid, and ensure the stability of the volume of different batches of fermentation liquid, thereby solving the technical problems in the background technology.

[0005] In order to achieve the above-mentioned object, the utility model provides the following technical solution: a cooling recovery device for reducing the volatilization of fermentation liquid on a fermentation tank, comprising: a fermentation tank and a condensation recovery device;

[0006] The fermentation tank is used to contain fermentation liquid and perform a fermentation process;

[0007] The condensation recovery device is arranged obliquely above the fermentation tank; the condensation recovery device comprises an outer stainless steel shell and an inner thin stainless steel tube, the outer walls of the stainless steel shell and the inner thin stainless steel tube are sealed and connected, and a space for storing cooling water is formed between the two;

[0008] The lower end of the thin stainless steel tube is connected to the fermentation tank; the fermentation liquid steam circulates in the thin stainless steel tube, and cooling water is stored in the stainless steel shell.

[0009] Furthermore, there are five thin stainless steel tubes, and the five thin stainless steel tubes are arranged inside the stainless steel shell along the length direction of the stainless steel shell and parallel to each other.

[0010] Furthermore, an exhaust port is provided at the top of the fermentation tank, and a silicone tube is sealed and connected to the exhaust port; the silicone tube is connected to the exhaust port at the top of the fermentation tank and the lower end of the condensation recovery device to ensure the circulation of the fermentation liquid and steam.

[0011] Furthermore, a water inlet and a water outlet are arranged on the side wall of the stainless steel shell; cooling water flows into the stainless steel shell from the water inlet and performs heat exchange with the thin stainless steel tube; after the heat exchange, the cooling water flows out from the water outlet.

[0012] Beneficial Effects

[0013] The utility model can effectively capture and condense the fermentation liquid vapor generated in the fermentation process through the condensation recovery device, and the condensed fermentation liquid flows back into the fermentation tank, thereby reducing the volatilization loss of the fermentation liquid; it can reduce the consumption of raw materials, thereby reducing the overall production cost; and because the volatilization of the fermentation liquid is reduced, the volume of the fermentation liquid of different batches is more stable, which is conducive to ensuring the consistency and repeatability of the fermentation process. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in the present utility model. For ordinary technicians in this field, other drawings can also be obtained based on these drawings.

[0015] Figure 1 It is a schematic diagram of the overall structure of the cooling recovery device disclosed in the utility model;

[0016] Figure 2 It is a structural schematic diagram of the condensation recovery device disclosed in the utility model;

[0017] Figure 3 It is a schematic diagram of the internal structure of the condensation recovery device disclosed by the utility model.

[0018] In the figure:

[0019] 1. Fermentation tank; 2. Condensation recovery device; 3. Stainless steel shell; 4. Thin stainless steel tube; 5. Silicone tube; 6. Water inlet; 7. Water outlet. DETAILED DESCRIPTION

[0020] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0021] In order to achieve the above-mentioned purpose, the utility model provides the following technical solutions: Figure 1-3 As shown, a cooling recovery device for reducing the volatilization of fermentation liquid on a fermentation tank comprises: a fermentation tank 1 and a condensation recovery device 2;

[0022] The fermentation tank 1 is arranged on the ground to contain the fermentation liquid and carry out the fermentation process; the condensation recovery device 2 is arranged above the fermentation tank 1 to capture and condense the volatilized fermentation liquid steam; the lower end of the condensation recovery device 2 is connected to the top of the fermentation tank 1; the upper end of the condensation recovery device 2 is connected to the tail gas treatment device; the tail gas treatment device is used to treat the gas generated in the fermentation process that cannot be condensed after passing through the condensation recovery device 2; the tail gas treatment device is a prior art and will not be described in detail in this application;

[0023] The condensation recovery device 2 includes an external stainless steel shell 3 and an internal thin stainless steel tube 4. The outer walls of the stainless steel shell 3 and the internal thin stainless steel tube 4 are sealed and connected, and a space for storing cooling water is formed between the two.

[0024] The condensation recovery device 2 is arranged obliquely above the fermentation tank 1; it is used to capture and condense the volatilized fermentation liquid steam; it should be noted that because the fermentation liquid steam will move directly upward under normal circumstances, when the condensation recovery device 2 is arranged obliquely, the fermentation liquid steam is forced to move obliquely upward along the inner wall of the thin stainless steel tube 4 in the condensation recovery device 2, so that the fermentation liquid steam will contact with the inner wall of the thin stainless steel tube 4 more and transfer heat, and it is easier to condense on the inner wall of the thin stainless steel tube 4; the inclined design also facilitates the condensed fermentation liquid to flow back into the fermentation tank 1;

[0025] The lower end of the thin stainless steel tube 4 is connected to the fermentation tank 1; the fermentation liquid steam circulates in the thin stainless steel tube 4, and cooling water is stored in the stainless steel shell 3. The cooling water cools the fermentation liquid steam in the thin stainless steel tube 4, so that the fermentation liquid steam condenses in the thin stainless steel tube 4 and flows back into the fermentation tank 1.

[0026] Furthermore, five thin stainless steel tubes 4 are provided, and the five thin stainless steel tubes 4 are arranged inside the stainless steel shell 3 along the length direction of the stainless steel shell 3 and parallel to each other. The five thin stainless steel tubes 4 are provided to increase the contact area of ​​the fermentation liquid steam and improve the condensation efficiency.

[0027] Furthermore, an exhaust port is opened at the top of the fermentation tank 1, and a silicone tube 5 is sealed and connected to the exhaust port; the silicone tube 5 is connected to the exhaust port at the top of the fermentation tank 1 and the lower end of the condensation recovery device 2. The silicone tube 5 is a flexible pipe and can be designed to an appropriate length and diameter as needed to ensure the circulation of steam and the reflux of the fermentation liquid after condensation.

[0028] Furthermore, a water inlet 6 and a water outlet 7 are provided on the side wall of the stainless steel shell 3; cooling water flows into the stainless steel shell 3 from the water inlet 6 and then exchanges heat with the thin stainless steel tube 4; the low temperature of the cooling water causes the fermentation liquid steam in the thin stainless steel tube 4 to condense, and the cooling water flows out from the water outlet 7 after the heat exchange; in actual use, the water can be cooled by a cooler and the cooled water can be injected into the water inlet 6 by a water pump.

[0029] Working principle:

[0030] In the fermentation tank 1, Clostridium tetani ferments at a temperature of 35°C to produce tetanus toxoid stock solution; however, due to the long fermentation, the fermentation liquid will volatilize, resulting in a decrease in the volume of the fermentation liquid. In order to solve the above problem, the following measures are taken: the exhaust port at the top of the fermentation tank 1 is connected to the lower end of the condensation recovery device 2, and the fermentation liquid steam is guided from the fermentation tank 1 to the condensation recovery device 2 through the silicone tube 5. The fermentation liquid steam circulates in the thin stainless steel tube 4 inside the condensation recovery device 2, and at the same time, the cooling water in the stainless steel shell 3 cools the steam in the thin stainless steel tube 4 through heat exchange; the cooled fermentation liquid steam condenses in the thin stainless steel tube 4 to form a liquid, and then flows back to the fermentation tank 1. Through the condensation recovery device 2, the volatilization loss of the fermentation liquid is reduced, and the stability of the fermentation liquid volume is ensured.

[0031] The embodiments of the present invention are provided for the purpose of illustration and description, and are not intended to be exhaustive or to limit the present invention to the disclosed forms. Many modifications and variations will be apparent to those of ordinary skill in the art. The embodiments are selected and described to better illustrate the principles and practical applications of the present invention, and to enable those of ordinary skill in the art to understand the present invention and thereby design various embodiments with various modifications suitable for specific uses.

Claims

1. A cooling and recovery device for reducing the volatilization of fermentation liquid on a fermentation tank, characterized in that: include: A fermentation tank (1) and a condensation recovery device (2); The fermentation tank (1) is used to contain fermentation liquid and carry out the fermentation process; The condensation recovery device (2) is arranged obliquely above the fermentation tank (1); the condensation recovery device (2) comprises an external stainless steel shell (3) and an internal thin stainless steel tube (4); the outer walls of the stainless steel shell (3) and the internal thin stainless steel tube (4) are sealed and connected, and a space for storing cooling water is formed between the two; The lower end of the thin stainless steel tube (4) is connected to the fermentation tank (1); the fermentation liquid steam flows in the thin stainless steel tube (4), and cooling water is stored in the stainless steel shell (3).

2. The cooling and recovery device for reducing the volatilization of fermentation liquid on a fermentation tank according to claim 1, characterized in that: There are five thin stainless steel tubes (4), and the five thin stainless steel tubes (4) are arranged inside the stainless steel shell (3) along the length direction of the stainless steel shell (3) and in parallel with each other.

3. The cooling and recovery device for reducing the volatilization of fermentation liquid on a fermentation tank according to claim 1, characterized in that: The fermentation tank (1) is provided with an exhaust port at the top, and a silicone tube (5) is sealedly connected to the exhaust port; the silicone tube (5) is connected to the exhaust port at the top of the fermentation tank (1) and the lower end of the condensation recovery device (2) to ensure the circulation of the fermentation liquid and steam.

4. The cooling and recovery device for reducing the volatilization of fermentation liquid on a fermentation tank according to claim 1, characterized in that: A water inlet (6) and a water outlet (7) are provided on the side wall of the stainless steel shell (3); cooling water flows from the water inlet (6) into the interior of the stainless steel shell (3) and performs heat exchange with the thin stainless steel tube (4); After heat exchange, cooling water flows out from the water outlet (7).

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