High-temperature-resistant yeast fermentation tank capable of collecting fermentation tail gas

Abstract

This utility model discloses a high-temperature resistant yeast fermenter capable of collecting fermentation exhaust gas, belonging to the field of fermenter technology. The high-temperature resistant yeast fermenter includes a tank body and a gas buffer bladder. A gas collecting hood and a spiral condenser tube are installed at the upper end of the tank body. A three-way valve is installed on the pipe connecting the gas collecting hood and the spiral condenser tube. One output end of the three-way valve is connected to the gas buffer bladder, and the output end of the spiral condenser tube is connected to an absorption tank. This high-temperature resistant yeast fermenter, capable of collecting fermentation exhaust gas, optimizes airflow distribution through a spiral condenser tube combined with a conical guide plate, improving condensation efficiency and reducing liquid component loss. CO2 is recovered with high purity through chemical absorption, allowing for food-grade or industrial reuse. The three-way valve and the gas buffer bladder work together, recycling gas during overpressure and supplementing CO2 during negative pressure, avoiding the exhaust gas leakage problem of traditional pressure relief valves.

Description

Technical Field

[0001] This utility model relates to the field of fermentation tank technology, and more specifically, to a high-temperature resistant yeast fermentation tank that can collect fermentation exhaust gas. Background Technology

[0002] Existing yeast fermenters are prone to efficiency decline and yeast activity reduction under high-temperature environments, and the CO2 and other exhaust gases produced during fermentation are directly emitted, wasting resources and potentially polluting the environment. Chinese patent CN221192132U discloses a yeast fermenter with an exhaust device. A vapor collection device is located on the upper right side of the fermenter to collect the vapor. However, this collection device has a simple structure, and the vapor discharged from the high-temperature environment is at a high temperature. Furthermore, the vapor contains water, ethanol, and other liquids, which are not recycled. Utility Model Content

[0003] The purpose of this invention is to overcome the shortcomings of the existing technology and provide a high-temperature resistant yeast fermenter that can collect fermentation exhaust gas, thereby solving the above-mentioned deficiencies.

[0004] To achieve the above objectives, the technical solution provided by this utility model is as follows:

[0005] This utility model discloses a high-temperature resistant yeast fermenter capable of collecting fermentation exhaust gas, comprising a tank body and a gas buffer bladder. The upper end of the tank body is provided with a gas collecting hood and a spiral condenser tube. A three-way valve is provided on the pipe connecting the gas collecting hood and the spiral condenser tube. One of the output ends of the three-way valve is connected to the gas buffer bladder, and the output end of the spiral condenser tube is connected to an absorption tank.

[0006] Preferably, the gas collecting hood is sealed to the top of the tank via a sealing flange, and a conical guide plate is fixedly connected inside the gas collecting hood. The conical guide plate has guide holes, the lower edge of the conical guide plate is fixedly connected to the inner wall of the gas collecting hood, and the top of the gas collecting hood is opposite to the gas outlet of the conical guide plate.

[0007] Preferably, the spiral condenser has a spiral tube inside, with the lower end of the spiral tube connected to the gas collecting hood and the upper end of the spiral tube connected to the absorption tank.

[0008] Preferably, the absorption tank is filled with an absorption liquid, and an air inlet pipe and an air outlet pipe are provided above the absorption tank. The air inlet pipe is connected to a spiral tube and extends to the bottom of the absorption liquid. CO2 is chemically adsorbed to generate sodium carbonate.

[0009] Preferably, the lower end of the gas buffer bladder is provided with a flow limiting hood, which is sealed to the gas buffer bladder. A return pipe is fixedly connected to the side of the flow limiting hood outside the gas buffer bladder. The lower end of the return pipe extends into the tank and is connected to an aeration pipe inside the tank.

[0010] Preferably, the flow-limiting hood is located inside the gas buffer bladder and has a flow-limiting orifice on one side. The flow-limiting orifice controls the emission rate so that subsequent gas can still enter the main recovery system.

[0011] Compared with the prior art, the technical solution provided by this utility model has the following advantages:

[0012] This invention relates to a high-temperature resistant yeast fermenter capable of collecting fermentation exhaust gas. A spiral condenser combined with a conical guide plate optimizes airflow distribution, improves condensation efficiency, and reduces liquid component loss. CO2 is recovered in high purity through chemical absorption, allowing for food-grade or industrial reuse. A three-way valve works in conjunction with a gas buffer bladder, allowing for gas recycling during overpressure and CO2 replenishment during negative pressure, avoiding the exhaust gas leakage problem of traditional pressure relief valves. A flow restrictor precisely controls the gas flow rate, ensuring stable operation of the main recovery system. A high-temperature resistant ceramic fiber insulation layer reduces heat loss and lowers constant-temperature energy consumption. Attached Figure Description

[0013] Figure 1 This is a structural diagram of the high-temperature resistant yeast fermenter that can collect fermentation exhaust gas according to the present invention.

[0014] Figure 2 This is a structural diagram showing the connection between the gas collecting hood and the spiral condenser tube of this utility model;

[0015] Figure 3 This is a structural diagram of the internal structure of the absorption tank of this utility model;

[0016] Figure 4 This is a structural diagram of the gas buffer bladder of this utility model.

[0017] In the diagram: 1. Tank body; 2. Gas collection hood; 21. Conical guide plate; 211. Flow guide hole; 3. Spiral condenser tube; 31. Spiral tube; 4. Three-way valve; 5. Gas buffer bladder; 51. Flow restrictor; 511. Flow restrictor hole; 52. Return pipe; 53. Aeration pipe; 6. Absorption tank; 61. Absorption liquid; 62. Air inlet pipe; 63. Exhaust pipe. Detailed Implementation

[0018] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0019] To further understand the content of this utility model, a detailed description of this utility model will be provided in conjunction with the accompanying drawings.

[0020] Combination Figures 1-4 This utility model discloses a high-temperature resistant yeast fermenter capable of collecting fermentation exhaust gas, comprising a tank body 1. The tank body 1 adopts a double-layer stainless steel sandwich design and is filled with high-temperature resistant ceramic fiber, which can maintain a constant temperature environment of 60-80℃. A gas collection hood 2 and a spiral condenser 3 are provided at the upper end of the tank body 1. A three-way valve 4 is provided on the pipe connecting the gas collection hood 2 and the spiral condenser 3. The inlet end of the three-way valve 4 is connected to the output end of the gas collection hood 2, one outlet end of the three-way valve 4 is connected to the spiral condenser 3, and the other outlet end of the three-way valve 4 is connected to the gas buffer bladder 5 through a pipe.

[0021] Specifically, the gas collecting hood 2 is sealed to the top of the tank body 1 via a sealing flange. A conical guide plate 21 is fixedly connected inside the gas collecting hood 2. The conical guide plate 21 has a guide hole 211. The lower edge of the conical guide plate 21 is fixedly connected to the inner wall of the gas collecting hood 2. The top of the gas collecting hood 2 is opposite to the gas outlet of the conical guide plate 21. During operation, the gas guided by the conical guide plate 21 is discharged from the gas outlet. The gas outlet of the conical guide plate 21 is connected to the spiral tube 31 inside the spiral condenser tube 3. The condensed water or liquid water vapor such as ethanol in the spiral tube 31 flows back into the gas collecting hood 2 and, under the action of the conical guide plate 21, flows to the edge of the gas collecting hood 2. Finally, it drips into the tank body 1 through the guide hole 211 at the bottom of the conical guide plate 21, which can disperse the dripping position of the liquid water vapor. The dry gas is discharged through the spiral tube 31.

[0022] More specifically, the outlet of the spiral tube 31 is connected to an absorption tank 6, which contains an absorbent liquid 61. An air inlet pipe 62 and an exhaust pipe 63 are provided above the absorption tank 6. The air inlet pipe 62 extends to the bottom of the absorbent liquid 61, where CO2 is chemically adsorbed to generate sodium carbonate.

[0023] See Figure 4In this embodiment, a flow-limiting hood 51 is provided at the lower end of the gas buffer bladder 5. The flow-limiting hood 51 is sealed to the gas buffer bladder 5. The gas buffer bladder 5 is made of flexible fluororubber to absorb instantaneous flow fluctuations. A flow-limiting orifice 511 is opened on one side inside the gas buffer bladder 5. The flow-limiting orifice 511 controls the discharge rate so that subsequent gas can still enter the main recovery system. A return pipe 52 is fixedly connected to the side of the flow-limiting hood 51 outside the gas buffer bladder 5. The lower end of the return pipe 52 extends into the tank 1 and is connected to the aeration pipe 53 inside the tank 1. When the pressure inside the tank 1 exceeds a threshold... At this time, the three-way valve 4 guides the overpressure gas to the gas buffer bladder 5 for storage. The overpressure gas enters the return pipe 52 through the flow restrictor 51 and is redispersed back into the fermentation liquid through the aeration pipe 53, realizing the internal recycling of CO2. The released gas dissolves in the fermentation liquid after diffusion through micropores, avoiding direct discharge. Under the action of the flow restrictor 51, the gas discharged into the tank 1 is less than the gas discharged. The gas buffer bladder 5 stores a certain amount of gas. When negative pressure occurs in the tank 1, the three-way valve 4 also connects the gas buffer bladder 5 and the tank 1, drawing the gas stored in the gas buffer bladder 5 back into the tank 1 for recycling.

[0024] Working process: Yeast ferments in tank 1, producing gases such as CO2. The temperature inside the tank is maintained at 60-80℃, and the pressure gradually increases. The gas rises to the top of the tank, is collected by the gas collection hood 2, and is evenly distributed through the guide holes 211 of the conical guide plate 21 to prevent the airflow from directly impacting the spiral condenser tube 3. The gas enters the spiral condenser tube 3, and after the high-temperature gas encounters the cooling, condensable components such as water vapor and ethanol liquefy, flowing back along the inner wall of the spiral tube 31 to the gas collection hood 2, and finally dripping back into tank 1 through the guide holes 211 for drying. The CO2 continues to flow into the absorption tank 6, where it reacts with the absorption liquid 61 to achieve CO2 immobilization and recovery. When an overpressure situation is encountered, the three-way valve 4 switches, and the gas enters the gas buffer bladder 5. After the flow rate is controlled by the flow limiting orifice 511, the gas is redispersed back into the fermentation liquid through the return pipe 52 and the aeration pipe 53 to achieve internal CO2 circulation. When there is negative pressure, the three-way valve 4 connects the gas buffer bladder 5 with the tank body 1, and the CO2 stored in the buffer bladder is drawn back into the tank to maintain pressure balance and prevent external air backflow and pollution.

[0025] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0026] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention.

Claims

1. A high-temperature resistant yeast fermenter capable of collecting fermentation exhaust gas, comprising a tank body (1) and a gas buffer bladder (5), characterized in that: The upper end of the tank (1) is provided with a gas collecting hood (2) and a spiral condenser (3). A three-way valve (4) is provided on the pipe connecting the gas collecting hood (2) and the spiral condenser (3). One of the output ends of the three-way valve (4) is connected to the gas buffer bladder (5), and the output end of the spiral condenser (3) is connected to the absorption tank (6).

2. The high-temperature resistant yeast fermenter capable of collecting fermentation exhaust gas according to claim 1, characterized in that: The gas collection hood (2) is sealed to the top of the tank (1) through a sealing flange. A conical guide plate (21) is fixedly connected inside the gas collection hood (2). A guide hole (211) is opened on the conical guide plate (21). The lower edge of the conical guide plate (21) is fixedly connected to the inner wall of the gas collection hood (2).

3. The high-temperature resistant yeast fermenter capable of collecting fermentation exhaust gas according to claim 1, characterized in that: The spiral condenser (3) has a spiral tube (31) inside. The lower end of the spiral tube (31) is connected to the gas collecting hood (2), and the upper end of the spiral tube (31) is connected to the absorption tank (6).

4. The high-temperature resistant yeast fermenter capable of collecting fermentation exhaust gas according to claim 3, characterized in that: The absorption tank (6) contains an absorption liquid (61). An air inlet pipe (62) and an exhaust pipe (63) are provided above the absorption tank (6). The air inlet pipe (62) is connected to the spiral pipe (31) and extends to the bottom of the absorption liquid (61).

5. The high-temperature resistant yeast fermenter capable of collecting fermentation exhaust gas according to claim 1, characterized in that: The lower end of the gas buffer bladder (5) is provided with a flow restrictor (51), which is sealed to the gas buffer bladder (5). The flow restrictor (51) is fixedly connected to a return pipe (52) on one side outside the gas buffer bladder (5). The lower end of the return pipe (52) extends into the tank (1) and is connected to an aeration pipe (53) inside the tank (1).

6. The high-temperature resistant yeast fermenter capable of collecting fermentation exhaust gas according to claim 5, characterized in that: The flow restrictor (51) is located inside the gas buffer bag (5) and has a flow restrictor hole (511) on one side.

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