Tea oil refining decolorization and deodorization system

Abstract

This invention discloses a decolorization and deodorization system for tea oil refining, comprising a deacidified oil storage tank, a first decolorization and deodorization device, and a second decolorization and deodorization device. The first and second decolorization and deodorization devices are connected in parallel. The first decolorization and deodorization device includes a first decolorization tower and a first deodorization tower connected in series. The second decolorization and deodorization device includes a second decolorization tower and a second deodorization tower connected in series. Both the bottom of the first and second deodorization towers are equipped with discharge pipes, the ends of which converge and connect to the deodorized oil storage tank. Valves R1 and R2 are installed on the pipes connecting the deacidified oil storage tank to the first and second decolorization towers, respectively. Valves R3 and R4 are installed on the discharge pipes at the bottom of the first and second deodorization towers, respectively. A feeding tank is connected to the top of the first, first, second, and second decolorization towers. This system can continuously and uninterruptedly perform decolorization and deodorization processes, improving the efficiency of tea oil production.

Description

Technical Field

[0001] This invention relates to the field of edible oil processing technology, and in particular to a decolorization and deodorization system for tea oil refining. Background Technology

[0002] Camellia oil is a pure, high-grade edible vegetable oil extracted from the mature seeds of the common camellia (Camellia oleifera), a plant belonging to the Camellia genus of the Theaceae family. It is clear in color, fragrant in taste, has a long shelf life, is not susceptible to aflatoxin contamination, is not easily rancid, and is easily digested and absorbed by the human body. Long-term consumption has excellent health benefits, making it a popular green and health-promoting edible vegetable oil. Tested and confirmed by the Chinese Center for Disease Control and Prevention, camellia oil is of superior quality to olive oil. A survey conducted by Shanghai Second Medical University shows that camellia oil can effectively improve cardiovascular and cerebrovascular diseases, lower cholesterol and fasting blood sugar, and inhibit the rise of triglycerides, helping patients with hypertension, hyperlipidemia, and hyperglycemia (the "three highs") improve their health.

[0003] Refining is the main process for producing high-quality tea oil. It can remove most of the impurities from the crude oil and mainly includes degumming, deacidification, decolorization, deodorization, and winterization. Decolorization and deodorization are further steps to remove impurities from the deacidified oil. Both of these processes will generate polluting gases, which will pollute the environment if directly emitted into the atmosphere.

[0004] To address the aforementioned technical problems, patent application CN202121720902.4 discloses a refining and decolorizing system comprising a decolorizing pot and a deodorizing pot. The decolorizing pot has a decolorizing inlet for crude oil input, and the decolorizing pot is connected to the deodorizing inlet of the deodorizing pot via a first pipe. The bottom of the deodorizing pot has an outlet for deodorized oil discharge. Both the decolorizing pot and the deodorizing pot have exhaust pipes, and both exhaust pipes are equipped with traps.

[0005] Although the system can collect the generated gases, if the decolorizing pot and / or deodorizing pot malfunction and require maintenance during operation, the entire system will be unable to perform the decolorization and deodorization processes, causing the entire tea oil preparation process to be interrupted and severely affecting the production efficiency. Furthermore, because the system uses high temperatures during decolorization and deodorization, the resulting deodorized oil and the generated polluting gases contain a large amount of heat. However, the system does not recover and utilize this heat, resulting in high energy consumption and a low heat recovery rate, which increases the production cost of tea oil. Summary of the Invention

[0006] The technical problem to be solved by the present invention is to overcome the shortcomings of the prior art and provide a decolorization and deodorization system for tea oil refining that can carry out decolorization and deodorization processes efficiently and continuously. This system not only carries out the tea oil refining process continuously and without interruption, but also makes effective recycling of heat in the entire system, which greatly reduces energy consumption.

[0007] The technical solution adopted by this invention to solve its technical problem is: a decolorization and deodorization system for tea oil refining, including a deacidified oil storage tank and a first decolorization and deodorization device and a second decolorization and deodorization device connected to the deacidified oil storage tank via pipelines. The first decolorization and deodorization device and the second decolorization and deodorization device are arranged in parallel, and the first decolorization and deodorization device includes a first decolorization tower and a first deodorization tower connected in series. The second decolorization and deodorization device includes a second decolorization tower and a second deodorization tower connected in series. The bottom of the first deodorization tower and the bottom of the second deodorization tower are both provided with discharge pipes. The ends of the two discharge pipes converge and are connected to the deodorized oil storage tank via a pipeline. Valves R1 and R2 are respectively installed on the pipelines connecting the deacidified oil storage tank to the first decolorization tower and the second decolorization tower. Valves R3 and R4 are respectively installed on the discharge pipes located at the bottom of the first deodorization tower and the discharge pipe located at the bottom of the second deodorization tower. Feeding tanks are connected to the tops of the first decolorization tower, the first deodorization tower, the second decolorization tower, and the second deodorization tower.

[0008] This invention employs a first and second decolorizing and deodorizing device connected in parallel, with valves R1, R2, R3, and R4 installed on the corresponding pipelines. These four valves control the first and / or second decolorizing and deodorizing devices for the decolorization and deodorization processes in tea oil refining. When one device requires maintenance, the other can be used for the decolorization and deodorization processes, ensuring that at least one decolorizing and deodorizing device is always operational throughout the entire tea oil refining process. This guarantees uninterrupted and continuous decolorization and deodorization, improving the efficiency of tea oil production. It should be noted that the decolorizing and deodorizing devices in this invention can also be configured as three or more devices connected in parallel, depending on actual needs.

[0009] Furthermore, a transition tank and a liquid-liquid heat exchanger are sequentially connected to the pipe at the end of the discharge pipe that connects to the deodorized oil storage tank. The transition tank, the liquid-liquid heat exchanger, and the deodorized oil storage tank are sequentially connected by pipes.

[0010] Furthermore, the liquid-liquid heat exchanger is provided with a liquid medium inlet and a liquid medium outlet at the top and bottom, respectively. The liquid medium inlet is connected to the deacidified oil storage tank through a pipeline, and the liquid medium outlet is connected to a deacidified oil heat exchange tube. The outlet of the deacidified oil heat exchange tube is connected to the pipeline connecting the deacidified oil storage tank and the first decolorization tower and the second decolorization tower.

[0011] Furthermore, a valve R5 is installed on the pipeline connecting the transition tank and the liquid-liquid heat exchanger, a valve R6 is installed on the pipeline connecting the deacidified oil storage tank and the liquid-liquid heat exchanger, and a valve R7 is installed on the pipeline of the deacidified oil heat exchange tube.

[0012] This invention also includes a transition tank and a liquid-liquid heat exchanger, which allows the deodorized tea oil after deodorization in the first and second deodorization towers to be temporarily stored in the transition tank. By controlling valves R5 and R6, the tea oil in the deodorized oil storage tank can exchange heat with the high-temperature deodorized tea oil to achieve preheating treatment, so that the heat in the deodorized oil can be recovered and utilized. The preheated deodorized oil is then sent to the corresponding decolorization tower, which can effectively shorten the heating process of the deodorized oil, greatly reduce the decolorization time, and improve the effective utilization rate of heat energy.

[0013] Furthermore, the top of the first deodorization tower and the top of the second deodorization tower are respectively connected to a first exhaust device and a second exhaust device via a first pipe and a second pipe. The first pipe and the second pipe are connected by a first connecting pipe, and the first exhaust device and the second exhaust device are connected by a second connecting pipe. The end of the second connecting pipe is also connected to a condenser and a gas purifier in sequence via a pipe.

[0014] Furthermore, the first and second air extraction devices each include at least one steam pump connected in series.

[0015] Furthermore, valves R8 and R9 are respectively installed on the left and right sides of the connection between the first pipe and the first connecting pipe, valves R10 and R11 are respectively installed on the left and right sides of the connection between the second pipe and the first connecting pipe, and valves R12 and R13 are respectively installed on the first connecting pipe and the second connecting pipe.

[0016] This invention also incorporates a first extraction device, a second extraction device, a condenser, and a gas purifier, with valves R8, R9, R10, R11, R12, and R13 installed on corresponding pipelines. This connects the first and second deodorization towers to the first and second extraction devices, respectively. The extraction process can be controlled by the valves, allowing the extraction of gas. The extracted gas is then condensed by the condenser and purified by the gas purifier before being discharged. This effectively reduces the environmental pollution caused by harmful gases generated during the decolorization and deodorization process. Furthermore, the first and second extraction devices can operate independently or simultaneously, ensuring smooth and continuous operation of the entire decolorization and deodorization process in conjunction with the corresponding decolorization and deodorization devices. This also guarantees the continuous extraction of harmful gases during decolorization and deodorization, thus ensuring the smooth operation of the entire decolorization and deodorization system.

[0017] Furthermore, the deacidified oil heat exchange tube is also connected to a deacidified oil heat preservation tank via a pipe. The outer wall of the deacidified oil heat preservation tank is provided with a jacket. The upper side wall of the jacket is provided with an air inlet, and the lower side wall is provided with an air outlet. The air inlet is connected to the end of the second pipe via a pipe, and the air outlet is connected to the condenser via a pipe.

[0018] Furthermore, the outlet at the bottom of the deacidified oil heat preservation tank is connected to an insulation pipe, and the end of the insulation pipe is connected to the pipeline connecting the deacidified oil storage tank and the first decolorization tower and the second decolorization tower.

[0019] The present invention also includes a deacidified oil heat preservation tank and a jacket, which allows the high-temperature gas generated by the decolorization and deodorization process to exchange heat with the deacidified oil in the jacket, thereby achieving heat preservation treatment of the deacidified oil. When it is necessary to add a small amount of deacidified oil to the first decolorization tower and / or the second decolorization tower to adjust the amount of deacidified oil added, the deacidified oil in the heat preservation tank can be directly transported to the first decolorization tower and / or the second decolorization tower, which can effectively improve the heat recovery and utilization rate of the high-temperature gas and greatly reduce the loss of this part of the heat.

[0020] Furthermore, a valve R14 is installed on the pipe connecting the deacidified oil heat exchanger tube and the deacidified oil insulation tank, and a valve R15 is installed on the insulation tube.

[0021] The beneficial effects of the decolorization and deodorization system for tea oil refining of this invention are as follows:

[0022] (1) The present invention provides a first decolorizing and deodorizing device and a second decolorizing and deodorizing device arranged in parallel, and installs valves R1, R2, R3 and R4 on the corresponding pipelines. The first decolorizing and deodorizing device and / or the second decolorizing and deodorizing device can be controlled by four valves to carry out the decolorizing and deodorizing process of tea oil refining. This ensures that at least one decolorizing and deodorizing device is always running in the entire tea oil refining process, ensuring that the decolorizing and deodorizing process is uninterrupted and continuous, and improving the preparation efficiency of tea oil.

[0023] (2) The present invention also provides a transition tank and a liquid-liquid heat exchanger, which can temporarily store the deodorized tea oil after deodorization by the first deodorization tower and the second deodorization tower in the transition tank. The tea oil to be decolorized and deodorized in the deacidified oil storage tank is preheated by exchanging heat with the high-temperature deodorized tea oil through valves R5 and R6. This can effectively shorten the heating process of the deacidified oil, greatly reduce the decolorization time, and improve the effective utilization rate of heat energy.

[0024] (3) The present invention also includes a first gas extraction device, a second gas extraction device, a condenser and a gas purifier, and valves R8, R9, R10, R11, R12 and R13 installed on the corresponding pipelines. The first gas extraction device and / or the second gas extraction device can be controlled by the valves to extract the gas. The extracted gas is then condensed by the condenser and purified by the gas purifier before being discharged. This can effectively reduce the pollution of the environment by the harmful gases generated by the decolorization and deodorization process.

[0025] (4) The present invention also provides a deacidified oil heat preservation tank and a jacket, which can exchange heat between the high-temperature gas generated by the decolorization and deodorization process and the deacidified oil in the jacket, thereby achieving heat preservation treatment of the deacidified oil, which can effectively improve the heat recovery and utilization rate of the high-temperature gas and greatly reduce the heat loss of this part. Attached Figure Description

[0026] Figure 1 —A schematic diagram of the decolorization and deodorization system for tea oil refining in Example 1;

[0027] Figure 2 —A schematic diagram of the decolorization and deodorization system for tea oil refining in Example 2;

[0028] Figure 3 —A schematic diagram of the decolorization and deodorization system for tea oil refining in Example 3;

[0029] Figure 4 —This is a schematic diagram of the decolorization and deodorization system for tea oil refining in Example 4.

[0030] The above figures are labeled as follows: 1-Deacidified oil storage tank, 2-First decolorization tower, 3-First deodorization tower, 4-Second decolorization tower, 5-Second deodorization tower, 6-Feeding tank, 7-Discharge pipe, 8-Deodorized oil storage tank, 9-Transition storage tank, 10-Liquid-liquid heat exchanger, 11-First pipeline, 12-Second pipeline, 13-First connecting pipe, 14-Second connecting pipe, 15-Condenser, 16-Gas purifier, 17-Steam pump, 18-Deacidified oil heat exchange tube, 19-Deacidified oil insulation tank, 20-Jacket, 21-Insulation pipe. Detailed Implementation

[0031] The present invention will be further described below with reference to the accompanying drawings and embodiments, but these specific embodiments do not limit the scope of protection of the present invention in any way.

[0032] Example 1

[0033] A decolorization and deodorization system for tea oil refining includes a deacidified oil storage tank 1 and a first decolorization and deodorization device and a second decolorization and deodorization device connected to the deacidified oil storage tank 1 via pipelines. The first decolorization and deodorization device and the second decolorization and deodorization device are arranged in parallel.

[0034] The first decolorization and deodorization device includes a first decolorization tower 2 and a first deodorization tower 3 connected in series. The second decolorization and deodorization device includes a second decolorization tower 4 and a second deodorization tower 5 connected in series. Each of the first decolorization tower 2, the first deodorization tower 3, the second decolorization tower 4, and the second deodorization tower 5 is connected to a feeding tank 6 at its top. The feeding tank 6 is used to add additives for decolorization and deodorization, such as activated clay and antioxidants, to the first decolorization tower 2, the first deodorization tower 3, the second decolorization tower 4, and the second deodorization tower 5.

[0035] The bottom of the first deodorization tower 3 and the bottom of the second deodorization tower 5 are both provided with discharge pipes 7. The ends of the two discharge pipes 7 converge and are connected to the deodorized oil storage tank 8 through a pipeline. Valves R1 and R2 are respectively installed on the pipeline connecting the deacidified oil storage tank 1 to the first decolorization tower 2 and the second decolorization tower 4. Valves R3 and R4 are respectively installed on the discharge pipe 7 located at the bottom of the first deodorization tower 3 and the discharge pipe 7 located at the bottom of the second deodorization tower 5.

[0036] In the above scheme, by connecting the first and second decolorizing and deodorizing devices in parallel and installing valves R1, R2, R3, and R4 on the corresponding pipelines, it is possible to open the corresponding valves when one decolorizing and deodorizing device needs maintenance, allowing the other device to perform the decolorization and deodorization processes for tea oil refining. Alternatively, to improve the refining efficiency of tea oil, the valves can be used to control both decolorizing and deodorizing devices to perform the decolorization and deodorization processes simultaneously, which can greatly improve the production efficiency of tea oil. This structural arrangement ensures that at least one decolorizing and deodorizing device is always operating during the tea oil refining process, thereby guaranteeing the uninterrupted and continuous smooth progress of the decolorization and deodorization processes and greatly improving the refining efficiency of tea oil.

[0037] This embodiment describes the working principle and usage of a decolorization and deodorization system for tea oil refining:

[0038] When only one decolorizing and deodorizing device is needed to operate, taking the first decolorizing and deodorizing device as an example, valves R1 and R3 are opened, and valves R2 and R4 are closed. The deacidified oil is transported from the deacidified oil storage tank 1 to the first decolorizing tower 2. The corresponding additives are added to the first decolorizing tower 2 and the first deodorizing tower 3 through the feeding tank 6, so that the deacidified oil can undergo the decolorization and deodorization steps. The deodorized oil obtained after deodorization is transported to the deodorized oil storage tank 8 for storage for subsequent operations.

[0039] When two decolorization and deodorization units need to be operated simultaneously, valves R1, R2, R3, and R4 are opened, and the deacidified oil is transported from the deacidified oil storage tank 1 to the first decolorization tower 2 and the second decolorization tower 4. The corresponding additives are added to the first decolorization tower 2, the first deodorization tower 3, the second decolorization tower 4, and the second deodorization tower 5 through the feeding tank 6, so that the deacidified oil can undergo the decolorization and deodorization steps. The deodorized oil obtained after deodorization is transported to the deodorized oil storage tank 8 for storage for subsequent operations.

[0040] Example 2

[0041] A decolorization and deodorization system for tea oil refining includes a deacidified oil storage tank 1 and a first decolorization and deodorization device and a second decolorization and deodorization device connected to the deacidified oil storage tank 1 via pipelines. The first decolorization and deodorization device and the second decolorization and deodorization device are arranged in parallel.

[0042] The first decolorization and deodorization device includes a first decolorization tower 2 and a first deodorization tower 3 connected in series. The second decolorization and deodorization device includes a second decolorization tower 4 and a second deodorization tower 5 connected in series. Each of the first decolorization tower 2, the first deodorization tower 3, the second decolorization tower 4, and the second deodorization tower 5 is connected to a feeding tank 6 at its top. The feeding tank 6 is used to add additives for decolorization and deodorization, such as activated clay and antioxidants, to the first decolorization tower 2, the first deodorization tower 3, the second decolorization tower 4, and the second deodorization tower 5.

[0043] The bottom of the first deodorization tower 3 and the bottom of the second deodorization tower 5 are both provided with discharge pipes 7. The ends of the two discharge pipes 7 converge and are connected in sequence to a transition storage tank 9, a liquid-liquid heat exchanger 10 and a deodorized oil storage tank 8 through a pipeline.

[0044] The liquid-liquid heat exchanger 10 is provided with a liquid medium inlet and a liquid medium outlet at the top and bottom, respectively. The liquid medium inlet is connected to the deacidified oil storage tank 1 through a pipe, and the liquid medium outlet is connected to the deacidified oil heat exchange tube 18. The outlet of the deacidified oil heat exchange tube 18 is connected to the pipe connecting the deacidified oil storage tank 1 and the first decolorization tower 2 and the second decolorization tower 4.

[0045] Valves R1 and R2 are installed on the pipes connecting the deacidified oil storage tank 1 to the first decolorization tower 2 and the second decolorization tower 4, respectively. Valves R3 and R4 are installed on the discharge pipe 7 located at the bottom of the first deodorization tower 3 and the discharge pipe 7 located at the bottom of the second deodorization tower 5, respectively. Valves R5 are installed on the pipe connecting the transition storage tank 9 to the liquid-liquid heat exchanger 10. Valves R6 are installed on the pipe connecting the deacidified oil storage tank 1 to the liquid-liquid heat exchanger 10. Valves R7 are installed on the pipe of the deacidified oil heat exchanger 18.

[0046] This embodiment, based on embodiment 1, also includes a transition storage tank 9 and a liquid-liquid heat exchanger 10. The deodorized tea oil after deodorization by the first deodorization tower 3 and the second deodorization tower 5 can be temporarily stored in the transition storage tank 9. The deacidified oil to be decolorized and deodorized in the deacidified oil storage tank 1 is preheated by exchanging heat with the high-temperature deodorized tea oil through valves R5 and R6. The preheated deacidified oil is then sent to the corresponding decolorization tower. This not only allows the heat in the deodorized oil to be recovered and utilized, but also effectively shortens the heating process of the deacidified oil, greatly reduces the decolorization time, and improves the effective utilization rate of heat energy.

[0047] This embodiment describes the working principle and usage of a decolorization and deodorization system for tea oil refining:

[0048] When only one decolorization and deodorization unit needs to operate, taking the first decolorization and deodorization unit as an example, valves R1 and R3 are opened, and valves R2, R4, R5, R6, and R7 are closed. The deacidified oil is transported from the deacidified oil storage tank 1 to the first decolorization tower 2. Appropriate additives are added to the first decolorization tower 2 and the first deodorization tower 3 through the feeding tank 6, allowing the deacidified oil to undergo decolorization and deodorization. The deodorized oil obtained after deodorization is transported to the transition storage tank 9 for temporary storage. After a period of time, valves R5, R6, and R7 are opened to transfer the deodorized oil in the transition tank 9 to the liquid-liquid heat exchanger 10. This allows the deodorized oil to exchange heat with the deacidified oil to be decolorized and deodorized, which is being transferred from the deacidified oil storage tank 1 to the liquid-liquid heat exchanger 10. This preheating process preheats the deacidified oil before transferring it to the first decolorization tower 2. The deodorized oil after heat exchange is then transferred to the deodorized oil storage tank 8 for storage in preparation for subsequent operations.

[0049] When two decolorization and deodorization units need to operate simultaneously, valves R1, R2, R3, and R4 are opened, and valves R5, R6, and R7 are closed. The deacidified oil is transported from the deacidified oil storage tank 1 to the first decolorization tower 2 and the second decolorization tower 4. Appropriate additives are added to the first decolorization tower 2, the first deodorization tower 3, the second decolorization tower 4, and the second deodorization tower 5 through the feeding tank 6, allowing the deacidified oil to undergo decolorization and deodorization. The deodorized oil obtained after deodorization is transported to the transition storage tank 9 for temporary storage. After running for a period of time, valves R5, R6, and R7 are opened to transfer the deodorized oil in the transition tank 9 to the liquid-liquid heat exchanger 10. This allows the deodorized oil to exchange heat with the deacidified oil to be decolorized and deodorized that is being transferred from the deacidified oil storage tank 1 to the liquid-liquid heat exchanger 10, thus preheating the deacidified oil. The preheated deacidified oil is then transferred to the first decolorization tower 2 and the second decolorization tower 4. After heat exchange, the deodorized oil is transferred to the deodorized oil storage tank 8 for storage in preparation for subsequent operations.

[0050] Example 3

[0051] A decolorization and deodorization system for tea oil refining includes a deacidified oil storage tank 1 and a first decolorization and deodorization device and a second decolorization and deodorization device connected to the deacidified oil storage tank 1 via pipelines. The first decolorization and deodorization device and the second decolorization and deodorization device are arranged in parallel.

[0052] The first decolorization and deodorization device includes a first decolorization tower 2 and a first deodorization tower 3 connected in series. The second decolorization and deodorization device includes a second decolorization tower 4 and a second deodorization tower 5 connected in series. Each of the first decolorization tower 2, the first deodorization tower 3, the second decolorization tower 4, and the second deodorization tower 5 is connected to a feeding tank 6 at its top. The feeding tank 6 is used to add additives for decolorization and deodorization, such as activated clay and antioxidants, to the first decolorization tower 2, the first deodorization tower 3, the second decolorization tower 4, and the second deodorization tower 5.

[0053] The bottom of the first deodorization tower 3 and the bottom of the second deodorization tower 5 are both provided with discharge pipes 7. The ends of the two discharge pipes 7 converge and are connected in sequence to a transition storage tank 9, a liquid-liquid heat exchanger 10 and a deodorized oil storage tank 8 through a pipeline.

[0054] The liquid-liquid heat exchanger 10 is provided with a liquid medium inlet and a liquid medium outlet at the top and bottom, respectively. The liquid medium inlet is connected to the deacidified oil storage tank 1 through a pipe, and the liquid medium outlet is connected to the deacidified oil heat exchange tube 18. The outlet of the deacidified oil heat exchange tube 18 is connected to the pipe connecting the deacidified oil storage tank 1 and the first decolorization tower 2 and the second decolorization tower 4.

[0055] Valves R1 and R2 are installed on the pipes connecting the deacidified oil storage tank 1 to the first decolorization tower 2 and the second decolorization tower 4, respectively. Valves R3 and R4 are installed on the discharge pipe 7 located at the bottom of the first deodorization tower 3 and the discharge pipe 7 located at the bottom of the second deodorization tower 5, respectively. Valves R5 are installed on the pipe connecting the transition storage tank 9 to the liquid-liquid heat exchanger 10. Valves R6 are installed on the pipe connecting the deacidified oil storage tank 1 to the liquid-liquid heat exchanger 10. Valves R7 are installed on the pipe of the deacidified oil heat exchanger 18.

[0056] The tops of the first deodorization tower 3 and the second deodorization tower 5 are respectively connected to a first extraction device and a second extraction device via a first pipe 11 and a second pipe 12. The first pipe 11 and the second pipe 12 are connected by a first connecting pipe 13, and the first extraction device and the second extraction device are connected by a second connecting pipe 14. The end of the second connecting pipe 14 is also connected to a condenser 15 and a gas purifier 16 in sequence via pipes. The first extraction device and the second extraction device each include at least one steam pump 17 connected in series, specifically three in this embodiment.

[0057] Valves R8 and R9 are installed on the left and right sides of the connection between the first pipe 11 and the first connecting pipe 13, respectively. Valves R10 and R11 are installed on the left and right sides of the connection between the second pipe 12 and the first connecting pipe 13, respectively. Valves R12 and R13 are installed on the first connecting pipe 13 and the second connecting pipe 14, respectively.

[0058] This embodiment, based on embodiment 2, further includes a first extraction device, a second extraction device, a condenser 15, and a gas purifier 16. Valves R8, R9, R10, R11, R12, and R13 are installed on the corresponding pipelines, so that the first deodorization tower 3 and the second deodorization tower 5 are respectively connected to the first extraction device and the second extraction device. The extraction process of gas can be controlled by the valves. The extracted gas is then condensed by the condenser 15 and purified by the gas purifier 16 before being discharged, which can effectively reduce the pollution of the environment by harmful gases generated by the decolorization and deodorization process.

[0059] Furthermore, the first and second extraction devices can perform extraction operations individually or simultaneously, which, when combined with the corresponding decolorization and deodorization devices, not only ensures the smooth and continuous operation of the entire decolorization and deodorization process, but also guarantees the continuous and uninterrupted extraction of harmful gases during decolorization and deodorization, thereby ensuring the smooth operation of the entire decolorization and deodorization system.

[0060] This embodiment describes the working principle and usage of a decolorization and deodorization system for tea oil refining:

[0061] When only one decolorizing and deodorizing device and one extraction device are needed, taking the first decolorizing and deodorizing device and the first extraction device as an example, valves R1, R3, R8, R9, and R13 are opened, while valves R2, R4, R5, R6, R7, R10, R11, and R12 are closed. The deacidified oil is transported from the deacidified oil storage tank 1 to the first decolorizing tower 2, and corresponding additives are added to the first decolorizing tower 2 and the first deodorizing tower 3 through the feeding tank 6, so that the deacidified oil undergoes the decolorization and deodorization steps. The deodorized oil obtained after deodorization is transported to the transition storage tank 9 for temporary storage. After running for a period of time, the valves are opened. Valve R5, valve R6, and valve R7 transport the deodorized oil in the transition storage tank 9 to the liquid-liquid heat exchanger 10, allowing the deodorized oil to exchange heat with the deacidified oil to be decolorized and deodorized in the deacidified oil storage tank 1. This preheating process preheats the deacidified oil before it is transported to the first decolorization tower 2. After heat exchange, the deodorized oil is transported to the deodorized oil storage tank 8 for storage in preparation for subsequent operations. Harmful gases generated during the decolorization and deodorization process are drawn into the condenser 15 by the steam pump 17 of the first extraction device, condensed, and then purified in the gas purifier 16 before being discharged.

[0062] When only one decolorization and deodorization unit needs to operate, and to improve extraction efficiency, two extraction units need to operate simultaneously. Taking the first decolorization and deodorization unit as an example, valves R1, R3, R8, R9, R11, R12, and R13 are opened, while valves R2, R4, R5, R6, R7, and R10 are closed. The deacidified oil is transported from the deacidified oil storage tank 1 to the first decolorization tower 2. Appropriate additives are added to the first decolorization tower 2 and the first deodorization tower 3 through the feeding tank 6, allowing the deacidified oil to undergo decolorization and deodorization. The deodorized oil obtained after deodorization is transported to the transition storage tank 9 for temporary storage. After a period of operation... Open valves R5, R6, and R7 to transfer the deodorized oil in the transition tank 9 to the liquid-liquid heat exchanger 10. This allows the deodorized oil to exchange heat with the deacidified oil to be decolorized and deodorized in the deacidified oil storage tank 1, which is also being transferred to the liquid-liquid heat exchanger 10. This preheating process preheats the deacidified oil before transferring it to the first decolorization tower 2. After heat exchange, the deodorized oil is transferred to the deodorized oil storage tank 8 for storage in preparation for subsequent operations. Harmful gases generated during the decolorization and deodorization process are drawn into the condenser 15 by the simultaneous action of the steam pumps 17 of the first and second extraction devices. After condensation, the gases are purified in the gas purifier 16 before being discharged.

[0063] When two decolorizing and deodorizing devices and one extraction device (taking the first extraction device as an example) are required to operate, valves R1, R2, R3, R4, R8, R9, and R13 are opened, and valves R5, R6, R7, R10, R11, and R12 are closed. The deacidified oil is transported from the deacidified oil storage tank 1 to the first decolorizing tower 2 and the second decolorizing tower 4. Appropriate additives are added to the first decolorizing tower 2, the first deodorizing tower 3, the second decolorizing tower 4, and the second deodorizing tower 5 through the feeding tank 6, allowing the deacidified oil to undergo decolorization and deodorization. The deodorized oil obtained after deodorization is transported to the transition storage tank 9 for temporary storage. After operating for a period of time, the valves are opened... Valve R5, valve R6, and valve R7 transport the deodorized oil in the transition storage tank 9 to the liquid-liquid heat exchanger 10, allowing the deodorized oil to exchange heat with the deacidified oil to be decolorized and deodorized in the deacidified oil storage tank 1. This preheating process preheats the deacidified oil before it is transported to the first decolorization tower 2 and the second decolorization tower 4. After heat exchange, the deodorized oil is transported to the deodorized oil storage tank 8 for storage in preparation for subsequent operations. Harmful gases generated during the decolorization and deodorization process are drawn into the condenser 15 by the simultaneous action of the steam pumps 17 of the first and second extraction devices. After condensation, the gases are purified in the gas purifier 16 before being discharged.

[0064] When two decolorizing and deodorizing devices and two extraction devices need to be operated simultaneously, valves R1, R2, R3, R4, R8, R9, R10, R11, R12, and R13 are opened, while valves R5, R6, and R7 are closed. The deacidified oil is then transported from the deacidified oil storage tank 1 to the first decolorizing tower 2 and the second decolorizing tower 4. Appropriate additives are added to the first decolorizing tower 2, the first deodorizing tower 3, the second decolorizing tower 4, and the second deodorizing tower 5 via the feeding tank 6, allowing the deacidified oil to undergo decolorization and deodorization. The deodorized oil obtained after deodorization is transported to the transition storage tank 9 for temporary storage. After a period of operation, valves R5, R6, R7, R8, R9, R10, R11, R12, and R13 are opened. Valve R6 and valve R7 transport the deodorized oil in the transition tank 9 to the liquid-liquid heat exchanger 10, where the deodorized oil exchanges heat with the deacidified oil to be decolorized and deodorized in the deacidified oil storage tank 1. This preheating process preheats the deacidified oil before it is transported to the first decolorization tower 2 and the second decolorization tower 4. The deodorized oil after heat exchange is then transported to the deodorized oil storage tank 8 for storage in preparation for subsequent operations. Harmful gases generated during the decolorization and deodorization process are drawn into the condenser 15 by the simultaneous action of the steam pumps 17 of the first and second extraction devices. After condensation, the gases are purified in the gas purifier 16 before being discharged.

[0065] During the extraction process, the steam pump 17 ejects steam at a certain speed, creating a pressure difference between the steam pump 17 and the corresponding deodorization tower. This causes the harmful gases in the deodorization tower to flow towards the steam pump 17 under the action of the pressure difference, and are then transported through pipes to the condenser 15 for condensation, where water vapor is condensed into liquid. The harmful gases are then transported to the gas purifier 16 for purification before being discharged.

[0066] Example 4

[0067] A decolorization and deodorization system for tea oil refining includes a deacidified oil storage tank 1 and a first decolorization and deodorization device and a second decolorization and deodorization device connected to the deacidified oil storage tank 1 via pipelines. The first decolorization and deodorization device and the second decolorization and deodorization device are arranged in parallel.

[0068] The first decolorization and deodorization device includes a first decolorization tower 2 and a first deodorization tower 3 connected in series. The second decolorization and deodorization device includes a second decolorization tower 4 and a second deodorization tower 5 connected in series. Each of the first decolorization tower 2, the first deodorization tower 3, the second decolorization tower 4, and the second deodorization tower 5 is connected to a feeding tank 6 at its top. The feeding tank 6 is used to add additives for decolorization and deodorization, such as activated clay and antioxidants, to the first decolorization tower 2, the first deodorization tower 3, the second decolorization tower 4, and the second deodorization tower 5.

[0069] The bottom of the first deodorization tower 3 and the bottom of the second deodorization tower 5 are both provided with discharge pipes 7. The ends of the two discharge pipes 7 converge and are connected in sequence to a transition storage tank 9, a liquid-liquid heat exchanger 10 and a deodorized oil storage tank 8 through a pipeline.

[0070] The liquid-liquid heat exchanger 10 is provided with a liquid medium inlet and a liquid medium outlet at the top and bottom, respectively. The liquid medium inlet is connected to the deacidified oil storage tank 1 through a pipe, and the liquid medium outlet is connected to the deacidified oil heat exchange tube 18. The outlet of the deacidified oil heat exchange tube 18 is connected to the pipe connecting the deacidified oil storage tank 1 and the first decolorization tower 2 and the second decolorization tower 4.

[0071] Valves R1 and R2 are installed on the pipes connecting the deacidified oil storage tank 1 to the first decolorization tower 2 and the second decolorization tower 4, respectively. Valves R3 and R4 are installed on the discharge pipe 7 located at the bottom of the first deodorization tower 3 and the discharge pipe 7 located at the bottom of the second deodorization tower 5, respectively. Valves R5 are installed on the pipe connecting the transition storage tank 9 to the liquid-liquid heat exchanger 10. Valves R6 are installed on the pipe connecting the deacidified oil storage tank 1 to the liquid-liquid heat exchanger 10. Valves R7 are installed on the pipe of the deacidified oil heat exchanger 18.

[0072] The tops of the first deodorization tower 3 and the second deodorization tower 5 are respectively connected to a first extraction device and a second extraction device via a first pipe 11 and a second pipe 12. The first pipe 11 and the second pipe 12 are connected by a first connecting pipe 13, and the first extraction device and the second extraction device are connected by a second connecting pipe 14. The first extraction device and the second extraction device each include at least one steam pump 17 connected in series, specifically three in this embodiment.

[0073] Valves R8 and R9 are installed on the left and right sides of the connection between the first pipe 11 and the first connecting pipe 13, respectively. Valves R10 and R11 are installed on the left and right sides of the connection between the second pipe 12 and the first connecting pipe 13, respectively. Valves R12 and R13 are installed on the first connecting pipe 13 and the second connecting pipe 14, respectively.

[0074] The deacidified oil heat exchange tube 18 is also connected to a deacidified oil heat preservation tank 19 via a pipe. The outer wall of the deacidified oil heat preservation tank 19 is provided with a jacket 20. The upper side wall of the jacket 20 is provided with an air inlet, and the lower side wall is provided with an air outlet. The air inlet is connected to the end of the second pipe 12 via a pipe, and the air outlet is connected to a condenser 15 and a gas purifier 16 in sequence via a pipe.

[0075] The discharge port at the bottom of the deacidified oil heat preservation tank 19 is connected to an insulation pipe 21. The end of the insulation pipe 21 is connected to the pipeline connecting the deacidified oil storage tank 1, the first decolorization tower 2, and the second decolorization tower 4. A valve R14 is installed on the pipeline connecting the deacidified oil heat exchange pipe 18 and the deacidified oil heat preservation tank 19, and a valve R15 is installed on the insulation pipe 21.

[0076] This embodiment, based on embodiment 3, further includes a deacidified oil heat preservation tank 19 and a jacket 20. The high-temperature gas generated by the decolorization and deodorization process can exchange heat with the deacidified oil in the jacket 20 to achieve heat preservation treatment of the deacidified oil. When it is necessary to add a small amount of deacidified oil to the first decolorization tower 2 and / or the second decolorization tower 4 to adjust the amount of deacidified oil added, the deacidified oil in the heat preservation tank can be directly transported to the first decolorization tower 2 and / or the second decolorization tower 4, which can effectively improve the heat recovery and utilization rate in the high-temperature gas and greatly reduce the loss of this part of the heat.

[0077] This embodiment describes the working principle and usage of a decolorization and deodorization system for tea oil refining:

[0078] When only one decolorizing and deodorizing device and one extraction device are needed, taking the first decolorizing and deodorizing device and the first extraction device as an example, valves R1, R3, R8, R9, and R13 are opened, while valves R2, R4, R5, R6, R7, R10, R11, R12, R14, and R15 are closed. The deacidified oil is transported from the deacidified oil storage tank 1 to the first decolorizing tower 2, and corresponding additives are added to the first decolorizing tower 2 and the first deodorizing tower 3 through the feeding tank 6, so that the deacidified oil undergoes the decolorization and deodorization steps. The deodorized oil obtained after deodorization is transported to the transition storage tank 9 for temporary storage. After running for a period of time, valves R5, R6, R7, and R14 are opened, and the transition oil is transported to the transition storage tank 9. The deodorized oil in storage tank 9 is transported to liquid-liquid heat exchanger 10, where it exchanges heat with the deacidified oil to be decolorized and deodorized in deacidified oil storage tank 1. This preheats the deacidified oil before it is transported to the first decolorization tower 2 and deacidified oil insulation tank 19. After heat exchange, the deodorized oil is transported to deodorized oil storage tank 8 for storage in preparation for subsequent operations. Harmful gases generated during the decolorization and deodorization process are drawn into jacket 20 by steam pump 17 of the first extraction device. They first exchange heat with the deacidified oil in deacidified oil insulation tank 19, and after heat preservation, the deacidified oil enters condenser 15 for condensation. Finally, it enters gas purifier 16 for purification before being discharged.

[0079] When it is necessary to fine-tune the amount of deacidified oil added to the first decolorization tower 2, valve 15 can be opened to transfer the deacidified oil that is kept warm in the deacidified oil heat preservation tank 19 to the first decolorization tower 2. Since this part of the deacidified oil is always kept warm, its addition to the first decolorization tower 2 will not cause a significant change in the overall temperature of the oil in the tower, thus playing the role of fine-tuning the amount of deacidified oil used in the first decolorization tower 2.

[0080] When only one decolorizing and deodorizing unit needs to operate, and to improve extraction efficiency, two extraction units need to operate simultaneously. Taking the first decolorizing and deodorizing unit as an example, valves R1, R3, R8, R9, R11, R12, and R13 are opened, while valves R2, R4, R5, R6, R7, R10, R14, and R15 are closed. The deacidified oil is transported from the deacidified oil storage tank 1 to the first decolorizing tower 2. Appropriate additives are added to the first decolorizing tower 2 and the first deodorizing tower 3 through the feeding tank 6, allowing the deacidified oil to undergo decolorization and deodorization. The deodorized oil obtained after deodorization is transported to the transition storage tank 9 for temporary storage. After operating for a period of time, valves R5, R6, R7, and R14 are opened. The deodorized oil in the transition storage tank 9 is transported to the liquid-liquid heat exchanger 10, where it exchanges heat with the deacidified oil to be decolorized and deodorized in the deacidified oil storage tank 1. This preheats the deacidified oil before it is transported to the first decolorization tower 2 and the deacidified oil insulation tank 19. The deodorized oil after heat exchange is then transported to the deodorized oil storage tank 8 for storage in preparation for subsequent operations. Harmful gases generated during the decolorization and deodorization process are drawn into the jacket 20 by the steam pumps 17 of the first and second extraction devices. They first exchange heat with the deacidified oil in the deacidified oil insulation tank 19, and after heat preservation, the deacidified oil enters the condenser 15 for condensation. Finally, it enters the gas purifier 16 for purification before being discharged.

[0081] When it is necessary to fine-tune the amount of deacidified oil added to the first decolorization tower 2, valve 15 can be opened to transfer the deacidified oil that is kept warm in the deacidified oil heat preservation tank 19 to the first decolorization tower 2. Since this part of the deacidified oil is always kept warm, its addition to the first decolorization tower 2 will not cause a significant change in the overall temperature of the oil in the tower, thus playing the role of fine-tuning the amount of deacidified oil used in the first decolorization tower 2.

[0082] When two decolorizing and deodorizing devices and one extraction device (taking the first extraction device as an example) are required for operation, valves R1, R2, R3, R4, R8, R9, and R13 are opened, and valves R5, R6, R7, R10, R11, R12, R14, and R15 are closed. The deacidified oil is transported from the deacidified oil storage tank 1 to the first decolorizing tower 2 and the second decolorizing tower 4. Appropriate additives are added to the first decolorizing tower 2, the first deodorizing tower 3, the second decolorizing tower 4, and the second deodorizing tower 5 through the feeding tank 6, allowing the deacidified oil to undergo decolorization and deodorization. The deodorized oil obtained after deodorization is transported to the transition storage tank 9 for temporary storage. After a period of operation, valves R5, R6, R7, and R14 are opened to release the transition storage oil. The deodorized oil in tank 9 is transported to the liquid-liquid heat exchanger 10, where it exchanges heat with the deacidified oil to be decolorized and deodorized in the deacidified oil storage tank 1. This preheats the deacidified oil before it is transported to the first decolorization tower 2, the second decolorization tower 4, and the deacidified oil insulation tank 19. The deodorized oil after heat exchange is then transported to the deodorized oil storage tank 8 for storage in preparation for subsequent operations. Harmful gases generated during the decolorization and deodorization process are drawn into the jacket 20 by the simultaneous action of the steam pumps 17 of the first and second extraction devices. These gases first exchange heat with the deacidified oil in the deacidified oil insulation tank 19, and after heat preservation, they enter the condenser 15 for condensation. Finally, they enter the gas purifier 16 for purification before being discharged.

[0083] When it is necessary to fine-tune the amount of deacidified oil added to the first decolorization tower 2 and the second decolorization tower 4, valve 15 can be opened to transfer the deacidified oil that is kept warm in the deacidified oil heat preservation tank 19 to the first decolorization tower 2. Since this part of the deacidified oil is always kept warm, its addition to the first decolorization tower 2 will not cause a significant change in the overall temperature of the oil in the tower, thus playing the role of fine-tuning the amount of deacidified oil used in the first decolorization tower 2.

[0084] When two decolorizing and deodorizing units and two extraction units need to be operated simultaneously, valves R1, R2, R3, R4, R8, R9, R10, R11, R12, and R13 are opened, while valves R5, R6, R7, R14, and R15 are closed. The deacidified oil is then transported from the deacidified oil storage tank 1 to the first decolorizing tower 2 and the second decolorizing tower 4. Appropriate additives are added to the first decolorizing tower 2, the first deodorizing tower 3, the second decolorizing tower 4, and the second deodorizing tower 5 via the feeding tank 6, allowing the deacidified oil to undergo decolorization and deodorization. The deodorized oil obtained after deodorization is transported to the transition storage tank 9 for temporary storage. After a period of operation, valves R5, R6, R7, and R14 are opened to release the deodorized oil from the transition storage tank 9. The odorous oil is transported to the liquid-liquid heat exchanger 10, where it exchanges heat with the deacidified oil to be decolorized and deodorized in the deacidified oil storage tank 1. This preheats the deacidified oil before it is transported to the first decolorization tower 2, the second decolorization tower 4, and the deacidified oil insulation tank 19. After heat exchange, the deodorized oil is transported to the deodorized oil storage tank 8 for storage in preparation for subsequent operations. Harmful gases generated during the decolorization and deodorization process are drawn into the jacket 20 by the steam pumps 17 of the first and second extraction devices. These gases exchange heat with the deacidified oil in the deacidified oil insulation tank 19, which then insulates the oil before it enters the condenser 15 for condensation. Finally, the oil is purified in the gas purifier 16 before being discharged.

[0085] When it is necessary to fine-tune the amount of deacidified oil added to the first decolorization tower 2 and the second decolorization tower 4, valve 15 can be opened to transfer the deacidified oil that is kept warm in the deacidified oil heat preservation tank 19 to the first decolorization tower 2. Since this part of the deacidified oil is always kept warm, its addition to the first decolorization tower 2 will not cause a significant change in the overall temperature of the oil in the tower, thus playing the role of fine-tuning the amount of deacidified oil used in the first decolorization tower 2.

[0086] It should be noted that the terms "primary," "secondary," "first," "second," "third," and "fourth," etc., are used in this document to describe various components, but these components should not be limited by these terms. These terms are only used to distinguish one component from another. Furthermore, the liquid-liquid heat exchanger in this application can be any existing heat exchanger capable of liquid-liquid heat exchange, and the steam pump and gas purifier used can also be existing steam pumps and gas purifiers. Therefore, the specific structures of the liquid-liquid heat exchanger and steam pump will not be described in detail here. Also, when it is necessary to transport liquids and / or gases from low to high altitudes, pumps can be installed on the corresponding pipelines to achieve this purpose. Therefore, pumps that need to be installed on pipelines to transport liquids and / or gases from low to high altitudes will not be described in detail here either.

[0087] The terms "up," "down," "left," and "right" used in this article to describe directions are for ease of explanation and are based on the directions shown in the accompanying drawings. In actual devices, these directions may vary depending on how the device is placed.

[0088] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention in any way. Although the present invention has been disclosed above with reference to preferred embodiments, it is not intended to limit the present invention. Any person skilled in the art can make some modifications or alterations to the above-disclosed technical content to create equivalent embodiments without departing from the scope of the present invention. Any simple modifications, equivalent changes, and alterations made to the above embodiments based on the technical essence of the present invention without departing from the scope of the present invention shall still fall within the scope of the present invention.

Claims

1. A decolorization and deodorization system for tea oil refining, comprising a deacidified oil storage tank and a first decolorization and deodorization device and a second decolorization and deodorization device connected to the deacidified oil storage tank via pipelines, characterized in that: The first decolorizing and deodorizing device and the second decolorizing and deodorizing device are arranged in parallel. The first decolorizing and deodorizing device includes a first decolorizing tower and a first deodorizing tower connected in series. The second decolorizing and deodorizing device includes a second decolorizing tower and a second deodorizing tower connected in series. The bottom of the first deodorizing tower and the bottom of the second deodorizing tower are provided with discharge pipes. The ends of the two discharge pipes converge and are connected to a deodorized oil storage tank through a pipeline. Valves R1 and R2 are respectively installed on the pipelines connecting the deodorized oil storage tank to the first decolorizing tower and the second decolorizing tower. Valves R3 and R4 are respectively installed on the discharge pipes located at the bottom of the first deodorizing tower and the discharge pipes located at the bottom of the second deodorizing tower. Feeding tanks are connected to the top of the first decolorizing tower, the first deodorizing tower, the second decolorizing tower and the second deodorizing tower. The end of the discharge pipe is connected to the deodorized oil storage tank, and a transition tank and a liquid-liquid heat exchanger are connected in sequence on the pipe. The transition tank, the liquid-liquid heat exchanger and the deodorized oil storage tank are connected in sequence through pipes. The liquid-liquid heat exchanger is provided with a liquid medium inlet and a liquid medium outlet at the top and bottom, respectively. The liquid medium inlet is connected to the deacidified oil storage tank through a pipe, and the liquid medium outlet is connected to a deacidified oil heat exchange tube. The outlet of the deacidified oil heat exchange tube is connected to the pipe connecting the deacidified oil storage tank and the first decolorization tower and the second decolorization tower. A valve R5 is installed on the pipeline connecting the transition tank and the liquid-liquid heat exchanger; a valve R6 is installed on the pipeline connecting the deacidified oil storage tank and the liquid-liquid heat exchanger; and a valve R7 is installed on the pipeline of the deacidified oil heat exchange tube. The top of the first deodorization tower and the top of the second deodorization tower are respectively connected to a first air extraction device and a second air extraction device through a first pipe and a second pipe. The first pipe and the second pipe are connected by a first connecting pipe. The first air extraction device and the second air extraction device are connected by a second connecting pipe. The end of the second connecting pipe is also connected to a condenser and a gas purifier in sequence through a pipe.

2. The decolorization and deodorization system for tea oil refining as described in claim 1, characterized in that: The first and second air extraction devices each include at least one steam pump connected in series.

3. The decolorization and deodorization system for tea oil refining as described in claim 1, characterized in that: Valves R8 and R9 are installed on the left and right sides of the connection between the first pipe and the first connecting pipe, respectively. Valves R10 and R11 are installed on the left and right sides of the connection between the second pipe and the first connecting pipe, respectively. Valves R12 and R13 are installed on the first connecting pipe and the second connecting pipe, respectively.

4. The decolorization and deodorization system for tea oil refining as described in claim 1, characterized in that: The deacidified oil heat exchange tube is also connected to a deacidified oil heat preservation tank via a pipe. The outer wall of the deacidified oil heat preservation tank is provided with a jacket. The upper side wall of the jacket is provided with an air inlet, and the lower side wall is provided with an air outlet. The air inlet is connected to the end of the second pipe via a pipe, and the air outlet is connected to the condenser via a pipe.

5. The decolorization and deodorization system for tea oil refining as described in claim 4, characterized in that: The discharge port at the bottom of the deacidified oil heat preservation tank is connected to an insulation pipe, and the end of the insulation pipe is connected to the pipeline connecting the deacidified oil storage tank and the first decolorization tower and the second decolorization tower.

6. The decolorization and deodorization system for tea oil refining as described in claim 5, characterized in that: A valve R14 is installed on the pipe connecting the deacidified oil heat exchanger tube and the deacidified oil insulation tank, and a valve R15 is installed on the insulation tube.

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