A closed separation device

Abstract

The utility model discloses a closed separation device relates to separation device field. The closed separation device includes separation groove subassembly, temperature control system, layered monitoring subassembly and separation actuating mechanism, wherein, separation groove subassembly, temperature control system, layered monitoring subassembly and separation actuating mechanism jointly constitute a closed separation environment. The closed separation device provides initiative, controllable heating by temperature control system, reduces wood tar viscosity and accelerates molecular movement, makes layered time shorten to 4 hours within from traditional 12 hours above, and efficiency improves. At the same time, solve the environmental protection and safety problem, and the closed environment that separation groove subassembly and each part jointly constitute, reduce VOC escape rate, realize clean production, through the design of layered monitoring subassembly and separation actuating mechanism, can accurate positioning liquid layer interface and positioning suction, avoided interlayer intermixing, and the wood vinegar solution purity obtained is high.

Description

Technical Field

[0001] This utility model relates to the field of separation device technology, specifically a closed separation device. Background Technology

[0002] In the field of biomass pyrolysis technology, the dry distillation of wood produces a mixture of wood tar and wood vinegar. Efficient separation of this mixture can enhance the product's value.

[0003] Currently, the commonly used separation method in the industry is the open-type settling tank natural stratification method. This method has the following problems: First, it relies on the liquid's own gravity for natural stratification, resulting in a slow separation speed, typically requiring more than 12 hours; second, the entire separation process takes place in an open or semi-open environment, causing a large amount of volatile organic compounds (VOCs) in the mixture to escape into the atmosphere, resulting in environmental pollution; third, after stratification, manual observation and equipment operation are required for extraction, which easily leads to cross-contamination between the upper and lower liquid layers, affecting the purity of the wood vinegar. To address the shortcomings of existing technology, this invention provides a closed-type separation device to solve the above problems. Utility Model Content

[0004] To address the shortcomings of existing technologies, this invention provides a closed-loop separation device. A temperature control system provides active and controllable heating, reducing the viscosity of wood tar and accelerating molecular motion. This shortens the separation time from over 12 hours to less than 4 hours, improving efficiency. Simultaneously, it solves environmental and safety issues. The closed environment formed by the separation tank assembly and other components reduces VOC emissions, achieving clean production. Through the design of the layer monitoring component and separation actuator, the liquid layer interface can be accurately located and suction can be precisely applied, avoiding interlayer mixing and resulting in high-purity wood vinegar.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a closed separation device, comprising:

[0006] A separation tank assembly, which constitutes a main cavity for containing the mixture to be separated;

[0007] A temperature control system is installed on the separation tank assembly and is used to regulate the temperature inside the main cavity;

[0008] A layered monitoring component is installed on the separation tank assembly and is used to detect the interface positions of different liquid layers in the main cavity in real time.

[0009] A separation actuator is disposed within the separation tank assembly, and the separation actuator is used to extract the different liquid layers after separation.

[0010] The separation tank assembly, temperature control system, stratification monitoring assembly, and separation actuator together constitute a closed separation environment.

[0011] Preferably, the separation tank assembly includes:

[0012] The main body of the separation tank is a cylindrical structure with a tank cover on top, and integrates temperature and pressure sensors inside;

[0013] A condensation reflux device is installed on the tank cover. The condensation reflux device has a cooling medium flow channel inside, which is used to condense the volatilized vapor and reflux it back into the main cavity.

[0014] Preferably, the temperature control system includes:

[0015] The jacket is a sandwich structure that covers the outer wall of the main body of the separation tank. The jacket is provided with a heat-conducting medium inlet and a heat-conducting medium outlet, which are used to achieve overall heating or cooling of the main cavity through circulating heat-conducting medium.

[0016] The electric heat tracing module is an electric heating element laid on the outer surface of the bottom of the separation tank body, used to locally heat the liquid at the bottom of the main cavity.

[0017] Preferably, the hierarchical monitoring component includes:

[0018] Several sets of microwave density sensor arrays are arranged at intervals along the vertical direction on the side wall of the separation tank body to determine the interface of different liquid layers by detecting changes in liquid density.

[0019] A visualization observation window is embedded in the side wall of the separation tank body, and the visualization observation window is made of corrosion-resistant transparent material.

[0020] Preferably, the detachable actuator includes:

[0021] A suction pump, which is connected to the main cavity via a pipe;

[0022] A liquid level suction head is disposed in the main cavity and is connected to the suction pump via a pipe.

[0023] The electric actuator is fixedly connected to the frame of the tank cover and its output end is connected to the upper end of the liquid level suction head. The electric actuator drives the liquid level suction head to move.

[0024] Preferably, the separation actuator further includes a nitrogen protection unit, which is connected to the main cavity via a pipeline and is used to fill the device with inert gas during the separation process.

[0025] Preferably, the separation device further includes a self-cleaning pipe interface disposed on the main body of the separation tank.

[0026] Preferably, the separation device further includes a central control unit, which is electrically connected to the temperature control system, the stratified monitoring component, and the separation actuator.

[0027] The technical effects and advantages of this utility model are as follows:

[0028] This closed-loop separation device uses an active and controllable heating system to reduce the viscosity of wood tar and accelerate molecular motion, thus shortening the separation time from more than 12 hours to less than 4 hours, improving efficiency. At the same time, it solves environmental and safety issues. The closed environment formed by the separation tank components and other parts reduces the VOC emission rate and achieves clean production. Through the design of the separation monitoring components and separation actuator, it can accurately locate the liquid layer interface and perform targeted suction, avoiding interlayer mixing and resulting in high purity wood vinegar. Attached Figure Description

[0029] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0030] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0031] Figure 2 This is a schematic diagram of the structure of the self-cleaning pipe interface of this utility model;

[0032] Figure 3 This is a schematic diagram of the internal structure of the separation tank body of this utility model;

[0033] Figure 4 This is a schematic diagram of the temperature control system and the layered monitoring component of this utility model;

[0034] Figure 5 This is a schematic diagram of the structure of the detachable actuator of this utility model.

[0035] In the diagram: 100, Separation tank assembly; 101, Separation tank body; 102, Tank cover; 103, Condensation reflux device; 200, Temperature control system; 201, Jacket; 202, Heat transfer medium inlet; 203, Heat transfer medium outlet; 204, Electric heat tracing module; 300, Layered monitoring assembly; 301, Microwave density sensor array; 302, Visual observation window; 400, Separation actuator; 401, Suction pump; 402, Liquid level suction head; 403, Electric push rod; 404, Nitrogen protection unit; 500, Self-cleaning pipeline interface; 600, Central control unit. Detailed Implementation

[0036] 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.

[0037] This embodiment discloses a closed separation device, according to the attached... Figure 1 To be continued Figure 5 As shown, the system includes a separation tank assembly 100, a temperature control system 200, a stratification monitoring component 300, a separation actuator 400, a self-cleaning pipe interface 500, and a central control unit 600. The separation tank assembly 100 forms a sealed main chamber for containing the mixture to be separated. The temperature control system 200, located on the separation tank assembly 100, precisely regulates the temperature within the main chamber to promote liquid stratification. The stratification monitoring component 300, located on the separation tank assembly 100, detects the interface positions of different liquid layers within the main chamber in real time and with precision. The separation actuator 400, located within the separation tank assembly 100, extracts the separated liquid layers separately based on monitoring signals. The central control unit 600 is electrically connected to each system, enabling automated control of the entire process. All these components together constitute a sealed separation environment, effectively preventing the escape of volatile organic compounds.

[0038] According to the appendix Figure 1 Appendix Figure 2 and attached Figure 3As shown, the separation tank assembly 100 is the core structure of the device, including the separation tank body 101, the tank cover 102, and the condensation reflux device 103. The separation tank body 101 is a cylindrical structure with an open top, preferably made of 304 stainless steel, which has excellent corrosion resistance. The tank cover 102 is fastened to the separation tank body 101 by flanges and sealing gaskets to ensure the sealing of the main cavity. Temperature and pressure sensors are also integrated inside the separation tank body 101 for real-time monitoring of the internal operating conditions. The condensation reflux device 103 is fixedly installed on the tank cover 102, and has cooling medium channels coiled inside, through which cooling water at about 5°C is introduced during operation. When steam is generated in the main cavity due to heating, the steam condenses into liquid on the surface of the condensation reflux device 103 and drips back into the main cavity, which avoids material loss and maintains the pressure balance and sealed environment inside the system.

[0039] According to the appendix Figure 1 and attached Figure 4 As shown, the temperature control system 200 is integrated into the separation tank assembly 100 to provide a gradient temperature field and accelerate the separation of liquids with different densities. The temperature control system 200 includes a jacket 201 and an electric heat tracing module 204. The jacket 201 is a sandwich structure covering the outer wall of the separation tank body 101, and it is provided with a heat-conducting medium inlet 202 and a heat-conducting medium outlet 203. By pumping in heat-conducting media such as hot water or hot oil, the mixture in the main cavity can be heated uniformly as a whole, and the working temperature is usually controlled within the range of 50-80℃. The electric heat tracing module 204 is an electric heating strip or heating plate laid on the outer surface of the bottom of the separation tank body 101. It is used to provide local auxiliary heating for the viscous wood tar deposited at the bottom, reducing its viscosity and facilitating subsequent extraction. The overall heating of the jacket 201 and the local heating of the electric heat tracing module 204 work together to form a highly efficient multi-stage gradient temperature control system 200.

[0040] According to the appendix Figure 1 Appendix Figure 3 and attached Figure 4 As shown, the layered monitoring component 300 is used to accurately determine the interface between the wood tar layer and the wood vinegar layer. The layered monitoring component 300 includes a microwave density sensor array 301 and a visualization window 302. The microwave density sensor array 301 consists of multiple microwave density sensors arranged in an array on the side wall of the separation tank body 101 with a vertical spacing of approximately 10 cm. Because wood tar and wood vinegar have different densities, their absorption and reflection characteristics of microwaves also differ. The microwave density sensor array 301 can non-contactly detect changes in liquid density in the vertical direction in real time, thereby accurately locating the interface. The visualization window 302, embedded in the side wall of the separation tank body 101, is made of acid and alkali resistant borosilicate glass and serves as an auxiliary observation method, allowing operators to intuitively confirm the separation effect and sensor operating status.

[0041] According to the appendix Figure 1 and attached Figure 5 As shown, the separation actuator 400 is used to extract the upper layer of wood vinegar and the lower layer of wood tar separately after stratification. It includes a suction pump 401, a liquid level suction head 402, an electric actuator 403, and a nitrogen protection unit 404. The liquid level suction head 402 is connected to the inlet of the suction pump 401 via a pipe. The electric actuator 403 is vertically fixed to the frame of the tank cover 102, and its output end is connected to the upper end of the liquid level suction head 402. The central control unit 600 controls the extension and retraction of the electric actuator 403 based on the liquid level position signal fed back by the stratification monitoring component 300, thereby driving the liquid level suction head 402 to rise or fall, ensuring that its inlet is always precisely aligned with the target liquid layer, separating the upper clear liquid layer first, followed by the lower thick liquid layer. The nitrogen protection unit 404 is connected to the main cavity through a pipeline. During the separation process, it continuously or intermittently fills the device with inert gases such as nitrogen, so that a positive pressure inert environment is formed inside the system, eliminating the risk of explosion that may be caused by contact between oil and gas and air, and further suppressing oxidation reaction and volatilization.

[0042] According to the appendix Figure 1 and attached Figure 2 As shown, the self-cleaning pipe interface 500 is located on the lower side wall of the separation tank body 101 and is connected to the liquid outlet pipe of the separation actuator 400. The self-cleaning pipe interface 500 is used to connect external cleaning equipment or fixed pipes. After the separation of a batch of materials is completed, cleaning agent or high-pressure water can be pumped in through the self-cleaning pipe interface 500 to perform online cleaning (CIP) of the pipes and cavities inside the device. Maintenance can be completed without disassembly, ensuring the continuity of production and hygiene standards, and preventing cross-contamination between different batches of materials.

[0043] According to the appendix Figure 1 To be continued Figure 5 As shown, it is particularly important to emphasize that the central control unit 600 typically employs a PLC (Programmable Logic Controller). It is electrically connected via cables to the temperature controller of the temperature control system 200, the sensor signal output terminal of the layer monitoring component 300, the electric push rod 403 of the separation actuator 400, and the suction pump 401. The central control unit 600 is pre-programmed to automatically execute the complete separation process: initiating temperature control, monitoring layer separation, driving suction head positioning, controlling suction, starting and stopping nitrogen protection, and recording data such as temperature, pressure, and separation time throughout the process. This achieves fully unattended automated operation, ensuring the consistency and traceability of the separation results.

[0044] Example 1: This example uses a mixture of wood tar and wood vinegar produced by the dry distillation of fruitwood as an example, combined with the attached... Figure 1 To be continued Figure 5 Detailed explanation of its workflow:

[0045] Feeding and sealing: The mixture is placed into the main body 101 of the separation tank, and then the tank cover 102 and all valves are closed to make the system a closed state.

[0046] Heating and Reflux: The central control unit 600 activates the temperature control system 200. A heat transfer medium is introduced into the jacket 201 to heat the mixture to 65°C. Simultaneously, the electric heat tracing module 204 at the bottom is activated to provide auxiliary heating to the bottom layer liquid. The evaporated vapors are condensed and refluxed in the condensation and reflux device 103.

[0047] Monitoring and Judgment: During the heating and settling process, the microwave density sensor array 301 operates continuously, transmitting density data to the central control unit 600 in real time. When the data shows a significant density jump at a certain height, the system determines that stratification is complete; this process takes approximately 3.5 hours.

[0048] Layered extraction: Extraction of wood vinegar: The central control unit 600 first controls the electric push rod 403 to lower the liquid level suction head 402 to the middle of the upper wood vinegar layer, and then starts the suction pump 401 to extract the clear wood vinegar into the collection tank. During this process, the nitrogen protection unit 404 continues to operate.

[0049] Extracting wood tar: When the sensor detects that the level of the wood vinegar solution is close to the interface, the suction pump 401 stops. The central control unit 600 then controls the electric push rod 403 to lower the liquid level suction head 402 to the bottom wood tar layer, and restarts the suction pump 401 to extract the wood tar to another collection tank.

[0050] Recording and Completion: All process data is recorded. After the material is completely removed, the system stops heating and nitrogen supply, preparing for cleaning.

[0051] Example 2

[0052] This embodiment mainly describes the self-cleaning process of the device, combined with the attached... Figure 1 and attached Figure 2 Detailed explanation of its workflow:

[0053] After completing the separation operation of Example 1, ensure that all materials have been discharged.

[0054] Connect the external CIP cleaning station to the self-cleaning pipe interface 500.

[0055] The cleaning program is initiated via the central control unit 600. The cleaning station sequentially pumps in alkaline cleaning agent, clean water, and acidic neutralizing agent, and circulates them within the system via suction pump 401 and liquid surface suction head 402.

[0056] The cleaning fluid flows through the loop formed by the pipe of the separation actuator 400 and the self-cleaning pipe interface 500, effectively cleaning the inner wall of the pipe and the inner wall of the separation tank body 101.

[0057] After cleaning, hot air or nitrogen is introduced to purge and dry the system, preparing it for the next separation operation.

[0058] Finally, it should be noted that the above are merely preferred embodiments of the present utility model and are not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A closed-loop separation device, characterized in that, include: A separation tank assembly (100) is configured to contain a main cavity for holding the mixture to be separated; A temperature control system (200) is installed on the separation tank assembly (100) and used to regulate the temperature inside the main cavity; A layered monitoring component (300) is disposed on the separation tank component (100) and used to detect the interface positions of different liquid layers in the main cavity in real time; A separation actuator (400) is disposed within the separation tank assembly (100), and the separation actuator (400) is used to extract the different liquid layers after separation; The separation tank assembly (100), temperature control system (200), stratification monitoring assembly (300), and separation actuator (400) together constitute a closed separation environment.

2. The closed separation device according to claim 1, characterized in that, The separation tank assembly (100) includes: The separation tank body (101) is a cylindrical structure with a tank cover (102) on top, and integrates temperature and pressure sensors inside; A condensation reflux device (103) is provided on the tank cover (102). The condensation reflux device (103) has a cooling medium flow channel inside, which is used to condense the volatilized vapor and reflux it back into the main cavity.

3. The closed separation device according to claim 2, characterized in that, The temperature control system (200) includes: The jacket (201) is a sandwich structure covering the outer wall of the separation tank body (101). The jacket (201) is provided with a heat-conducting medium inlet (202) and a heat-conducting medium outlet (203) for heating or cooling the main cavity by circulating heat-conducting medium. The electric heating module (204) is an electric heating element laid on the bottom outer surface of the separation tank body (101) for local heating of the liquid at the bottom of the main cavity.

4. The closed separation device according to claim 2, characterized in that, The hierarchical monitoring component (300) includes: Several sets of microwave density sensor arrays (301) are arranged at intervals along the vertical direction on the side wall of the separation tank body (101) to determine the interface of different liquid layers by detecting changes in liquid density; A visualization observation window (302) is embedded in the side wall of the separation tank body (101), and the visualization observation window (302) is made of a corrosion-resistant transparent material.

5. A closed separation device according to claim 2, characterized in that, The separate actuator (400) includes: A suction pump (401) is connected to the main cavity via a pipe; A liquid level suction head (402) is disposed in the main cavity, and the liquid level suction head (402) is connected to the suction pump (401) through a pipe; An electric push rod (403) is fixedly connected to the frame of the tank cover (102) and its output end is connected to the upper end of the liquid surface suction head (402). The electric push rod (403) drives the liquid surface suction head (402) to move.

6. A closed separation device according to claim 5, characterized in that, The separation actuator (400) also includes a nitrogen protection unit (404), which is connected to the main cavity through a pipe and is used to fill the device with inert gas during the separation process.

7. A closed separation device according to claim 2, characterized in that, The separation device also includes a self-cleaning pipe interface (500) disposed on the separation tank body (101).

8. A closed separation device according to claim 1, characterized in that, The separation device also includes a central control unit (600), which is electrically connected to the temperature control system (200), the stratified monitoring component (300), and the separation actuator (400).

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