A tar separation device

Abstract

This utility model discloses a tar separation device, relating to the technical field of material separation equipment. The tar separation device includes a separation mechanism, which includes a housing. The first housing has a first cavity, and the first housing has an inlet and a first outlet communicating with the first cavity. A buffer assembly includes several partitions disposed within the first cavity, and a channel communicating with the inlet and the first outlet is formed between the partitions and the inner wall of the first housing. A detection assembly includes at least two densitometers fixed to the inner wall of the first housing and arranged from top to bottom. The densitometers are located above the first outlet. When the value fluctuations detected by each densitometer are found to be within the allowable range for a period of time, the first valve is operated accordingly based on the density difference between the tar and other components in the tar mixture to achieve tar separation. When separating tar, there is no need to install the stirring motor, scraper, conveyor belt, and other structures found in existing separation equipment, thus reducing the cost of tar separation.

Description

Technical Field

[0001] This utility model relates to the field of material separation equipment technology, and in particular to a tar separation device. Background Technology

[0002] Tar separation equipment is a device that separates tar from a mixture of tar, water, and other substances using physical or chemical methods. However, the cost of tar separation in existing technologies is relatively high.

[0003] For example, patent document CN116870536A describes a tar-ammonia water separator including a stirring motor. The stirring motor drives a stirring rod to rotate via an electric telescopic rod, stirring the tar-ammonia water mixture and generating centrifugal force to accelerate the stratification of ammonia water and tar. Patent document CN220550144U discloses a tar separation device including a sealed box with a cavity for liquid filling; a separation box located at the bottom of the cavity and submerged in the liquid, the separation box having a vent cover with multiple perforations; an air inlet pipe located in the sealed box and communicating with the separation box; and an oil-water separator including a housing, a driver, a conveyor belt, and scrapers, the housing being mounted on the sealed box. The driver is located in the housing and is powered to one end of the conveyor belt. The other end of the conveyor belt is housed in a cavity. A scraper is located inside the housing and is inclined against a portion of the conveyor belt. Low-pressure mixed oil and gas enter the separation box through the air inlet pipe. Multiple oil bubbles are formed through various perforations and float to the surface in the liquid. The tar in the oil bubbles condenses into a liquid state and adheres to the conveyor belt, where it is scraped off and collected by the scraper. It can be seen that patent document CN116870536A requires the use of a stirring motor, an electric telescopic rod, and a stirring rod to separate tar, while patent document CN220550144U requires the use of a conveyor belt, scraper, separation box, and other structures to separate tar. Obviously, the cost of separating tar in the above patent documents is relatively high.

[0004] How to reduce the cost of tar separation while separating tar has become a technical problem that urgently needs to be solved by those skilled in the art. Utility Model Content

[0005] The purpose of this invention is to provide a tar separation device that can reduce the cost of tar separation while separating tar.

[0006] To achieve the above objectives, this utility model provides the following solution: This utility model provides a tar separation device, which includes a separation mechanism, the separation mechanism comprising: A first housing has a first cavity for containing a tar mixture. The first housing is provided with an inlet and a first outlet communicating with the first cavity. The inlet is used to receive the tar mixture. The components in the tar mixture have different densities. A buffer assembly includes several partitions disposed in the first cavity. A first channel is formed between the partitions and the inner wall of the first housing, which communicates with the feed inlet and the first discharge outlet. The first channel is used for the flow of tar mixture. The detection component includes at least two densitometers fixed to the inner wall of the first housing and arranged sequentially from top to bottom. The densitometers are located above the first discharge port and are used to detect the density of the components in the tar mixture. An opening and closing assembly, comprising a first valve disposed at the first discharge port and used to control the opening and closing of the first discharge port.

[0007] Preferably, the first housing is further provided with a second discharge port located above the densitometer, and the opening and closing assembly further includes a second valve located at the second discharge port.

[0008] Preferably, the buffer assembly includes a first partition and a second partition spaced apart along the flow direction of the tar mixture in the first cavity, with the opposite ends of the first partition and the second partition respectively connected to the opposite sides of the inner wall of the first housing, and the first channel including the area between the opposite ends of the first partition and the second partition and the inner wall of the first housing.

[0009] Preferably, the buffer assembly includes a plurality of third partitions that are inclinedly disposed in the first cavity and located on the side of the second partition near the first discharge port.

[0010] Preferably, the tar is the component with the highest density in the tar mixture; and / or, the inner wall corners of the first housing are provided with rounded transition areas.

[0011] Preferably, the detection component includes a first densitometer and a second densitometer arranged sequentially from top to bottom, with the first outlet located below the second densitometer.

[0012] Preferably, the separation mechanism includes an exhaust port located on the top of the first housing and communicating with the first cavity; and / or, the first housing is provided with a safety valve communicating with the first cavity.

[0013] Preferably, the tar separation device further includes a cooling mechanism, which includes a second channel and a third channel in contact with each other. A cooling medium flows through the second channel, and pyrolysis gas containing gaseous tar flows through the third channel. The third channel is connected to the feed inlet. The cooling medium is at a temperature lower than the pyrolysis gas temperature; the gaseous tar condenses into liquid tar before entering the feed inlet, and the liquid tar moves into the feed inlet under the first force.

[0014] Preferably, the cooling medium is cooling air, and the third channel is vertically arranged; The cooling mechanism further includes a fan facing the third channel, a second box and a third box respectively connected to both ends of the third channel. The second box is located at the end of the third channel near the first box and is connected to the feed inlet. The second box has a second cavity for storing tar mixture. The second box is provided with a discharge port and a pyrolysis gas outlet connected to the second cavity. A water seal is provided at the discharge port and is connected to the feed inlet. The third box has a third cavity for storing pyrolysis gas and a pyrolysis gas inlet connected to the third cavity.

[0015] Preferably, the first box and / or the second box are provided with a visualization window on their side, the visualization window being used to observe the state of the tar mixture inside the first box and / or the second box.

[0016] The present invention achieves the following technical advantages over the prior art: The tar separation device of this utility model includes a separation mechanism, which includes a housing. The first housing has a first cavity for containing a tar mixture. The first housing is provided with an inlet and a first outlet communicating with the first cavity. The buffer assembly includes several partitions disposed in the first cavity. A channel is formed between the partitions and the inner wall of the first housing, communicating with the inlet and the first outlet, and for the flow of the tar mixture. The partitions disposed in the flow path of the tar mixture play a buffering role for the tar mixture: when the tar mixture hits the partitions, the kinetic energy and velocity of the tar mixture decrease. Under the condition that the initial velocity of the tar mixture entering the first cavity is the same, compared with the device without partitions, this reduces the liquid surface fluctuation time of the tar mixture in the first cavity, so that the tar mixture can settle and separate into layers in the first cavity more quickly and discharge the tar, thus accelerating the tar separation efficiency. Furthermore, the detection assembly includes at least two densitometers fixed to the inner wall of the first chamber and arranged from top to bottom. All densitometers are located above the first discharge port and are used to detect the density of the components in the tar mixture. The density of each component in the tar mixture entering the first chamber from the feed port is different (the tar mixture is added manually by the operator or fed into the feed port by a material conveying device such as a conveying pipe equipped with a conveying pump). Therefore, after the tar mixture enters the first chamber, when the operator, based on feedback from each densitometer, finds that the density fluctuations detected by each densitometer remain within an acceptable range over a period of time, this indicates that the components of the tar mixture have achieved static stratification. At this point, based on the density differences between the tar and other components in the tar mixture (because the operator is separating the tar mixture, they are aware of the components and their density differences), the first valve is operated accordingly to discharge the tar and other components in the tar mixture separately, thus achieving tar separation; for example, when the tar is the densest component in the tar mixture, and the operator finds that the density fluctuations detected by each densitometer remain within an acceptable range over a period of time... When the density of the mixture remains within the permissible range and the density detected by the density meter at the bottom matches the density of the tar, the first valve is opened to discharge the tar at the bottom of the first chamber (the first outlet can be connected to a reactor or storage device so that the tar discharged from the first chamber can enter another reactor for the next process or enter a storage tank or other storage device). When the density detected by the density meter at the bottom does not match the density of the tar, the first valve is closed, and the device connected to the first outlet is replaced to discharge other components in the tar mixture to prevent secondary mixing with the separated tar. When there is a need to separate other components in the tar mixture besides tar, they can be discharged layer by layer according to the density of different components, thereby achieving the separation of multiple different components. When tar is the component with the lowest density in the tar mixture, and the operator finds that the density values ​​of the tar mixture detected by each densitometer remain within the allowable range for a period of time, the first valve is opened to continuously discharge the components located below the tar until the lowest densitometer detects a value that matches the density of the tar. Then, the first valve is closed, and the equipment connected to the first feed port is replaced to prevent the tar from mixing with other components in the previously discharged tar mixture. Subsequently, the first valve is opened to discharge the tar, thus achieving tar separation. When the density of the tar is in the middle of the density order of the components in the tar mixture, and the operator finds that the density values ​​of the tar mixture detected by each densitometer remain within the allowable range for a period of time, the first valve is opened to continuously discharge the components located below the tar until the lowest densitometer detects a value that matches the density of the tar. Then, the first valve is closed, and the equipment connected to the first feed port is replaced to prevent the tar from mixing with other components in the previously discharged tar mixture. Subsequently, the first valve is opened to discharge the tar, thus achieving tar separation. As can be seen from the above, the tar separation device of this utility model does not require the installation of existing separation equipment such as stirring motors, scrapers, and conveyor belts when separating tar, thus reducing the manufacturing cost of the equipment. In summary, the tar separation device of this utility model reduces the cost of tar separation while achieving tar separation. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the embodiments 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.

[0018] Figure 1 This is a schematic diagram of a tar separation device; The components are as follows: 1. First chamber; 2. Inlet; 3. First outlet; 4. Second outlet; 5. First partition; 6. Second partition; 7. Third partition; 8. First density meter; 9. Second density meter; 10. Exhaust port; 11. Second chamber; 12. Third chamber; 13. Third channel; 14. Pyrolysis gas inlet; 15. Pyrolysis gas outlet; 16. Cover plate; 17. Water seal; 18. Exhaust valve; 19. First valve; 20. Separation mechanism; 21. Cooling mechanism. Detailed Implementation

[0019] 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.

[0020] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, the utility model will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0021] like Figure 1 As shown, this utility model discloses a tar separation device. The tar separation device includes a separation mechanism 20, which includes a housing. The first housing 1 has a first cavity for containing a tar mixture. The first housing 1 is provided with an inlet 2 and a first outlet 3 communicating with the first cavity. The buffer assembly includes several partitions disposed in the first cavity. A channel for the flow of the tar mixture is formed between the partitions and the inner wall of the first housing 1, communicating with the inlet 2 and the first outlet 3. The partitions disposed in the flow path of the tar mixture play a buffering role for the tar mixture: when the tar mixture hits the partitions, the kinetic energy and speed of the tar mixture decrease. Under the condition that the initial velocity of the tar mixture entering the first cavity is the same, compared with the device without partitions, this reduces the liquid surface fluctuation time of the tar mixture in the first cavity, so that the tar mixture can settle and separate into layers in the first cavity more quickly and discharge the tar, thus accelerating the tar separation efficiency. Furthermore, the detection assembly includes at least two densitometers fixed to the inner wall of the first chamber 1 and arranged from top to bottom. All densitometers are located above the first discharge port 3 and are used to detect the density of the components in the tar mixture. The density of each component in the tar mixture entering the first chamber from the feed port 2 is different (the tar mixture is added manually by the operator or input into the feed port 2 by a material conveying device such as a conveying pipe equipped with a conveying pump). Therefore, after the tar mixture enters the first chamber, when the operator, based on feedback from each densitometer, finds that the density fluctuations detected by each densitometer remain within an acceptable range over a period of time, this indicates that the components of the tar mixture have achieved static stratification. At this point, based on the density differences between the tar and other components in the tar mixture (because the operator is separating the tar mixture, they are aware of the components and their density differences), the first valve 19 is operated accordingly to discharge the tar and other components in the tar mixture, thus achieving tar separation; for example, when the tar is the densest component in the tar mixture, and the operator finds that the density fluctuations detected by each densitometer remain within an acceptable range over a period of time... If the density remains within the allowable range and at least the density detected by the lowest densitometer matches the density of the tar, open the first valve 19 to discharge the tar at the bottom of the first chamber (the first outlet 3 can be connected to a reactor or storage device so that the tar discharged from the first chamber 1 can enter another reactor for the next process or enter a storage tank or other storage device). When the density detected by the lowest densitometer does not match the density of the tar, close the first valve 19, replace the device connected to the first outlet 3, and discharge other components in the tar mixture to prevent secondary mixing with the separated tar. When there is a need to separate other components in the tar mixture besides tar, they can be discharged layer by layer according to the density of different components, thereby achieving the separation of multiple different components. When tar is the component with the lowest density in the tar mixture, and the operator finds that the density values ​​of the tar mixture detected by each densitometer remain within the allowable range for a period of time, the first valve 19 is opened to continuously discharge the component located below the tar until the lowest densitometer detects a value that matches the density of the tar. Then, the first valve 19 is closed, and the equipment connected to the first feed port 2 is replaced to prevent the tar from mixing with other components in the previously discharged tar mixture. Subsequently, the first valve 19 is opened to discharge the tar, thus achieving tar separation. When the density of the tar is in the middle of the density order of the components in the tar mixture, and the operator finds that the density values ​​of the tar mixture detected by each densitometer remain within the allowable range for a period of time, the first valve 19 is opened to continuously discharge the components located below the tar until the lowest densitometer detects a value that matches the density of the tar. Then, the first valve 19 is closed, and the equipment connected to the first feed port 2 is replaced to prevent the tar from mixing with other components in the previously discharged tar mixture. Subsequently, the first valve 19 is opened to discharge the tar, thus achieving tar separation. As can be seen from the above, the tar separation device of this utility model does not require the installation of existing separation equipment such as stirring motors, scrapers, and conveyor belts when separating tar, thus reducing the manufacturing cost of the equipment. In summary, the tar separation device of this utility model reduces the cost of tar separation while achieving tar separation.

[0022] The permissible range refers to the range of changes in the density measured by the densitometer when the components in the tar mixture are allowed to settle and separate into layers. This range can be determined through multiple experiments before the tar separation device is put into operation. The volume of the first chamber needs to be large enough to reduce the pressure imbalance caused by the tar mixture entering the first chamber. Alternatively, the first chamber 1 can be equipped with an exhaust port 10, which connects the first chamber to the external environment. This allows the gas in the first chamber to be discharged through the exhaust port 10 after the tar mixture enters, thus balancing the pressure in the first chamber. To reduce the possibility of contamination of tar and other components after connecting the first chamber to the outside environment, a one-way valve can be installed at the exhaust port 10, allowing air to be discharged only from the first chamber and preventing external impurities from entering the first chamber through the one-way valve. Alternatively, a filter screen can be installed inside the exhaust port 10 to intercept impurities entering the first chamber from the exhaust port 10. The tar separation device can also be placed in a cleanroom with a cleanliness level of 1000 or even 100 to reduce the entry of external impurities into the first chamber. Alternatively, a safety valve connected to the first cavity can be installed on the first cavity to release gas to the outside when the pressure in the first cavity exceeds a specified value, thereby balancing the pressure in the first cavity and reducing the entry of external impurities into the first cavity through the safety valve.

[0023] like Figure 1 As shown, the first housing 1 is also equipped with a second discharge port 4 located above all the densitometers. The opening and closing assembly also includes a second valve located at the second discharge port 4 and used to control the opening and closing of the second discharge port 4. When tar is the component with the highest density in the tar mixture, after the operator observes that the density fluctuations of the tar mixture detected by each densitometer remain within the allowable range for a period of time, the first valve 19 and the second valve can be opened simultaneously, allowing the tar and some other components in the tar mixture to be discharged simultaneously. This shortens the time required to discharge the tar and other components in the tar mixture during tar separation, facilitating the subsequent separation of the tar mixture. When tar is the component with an intermediate density in the tar mixture, after the operator observes that the density fluctuations of the tar mixture detected by each densitometer remain within the allowable range for a period of time, the first valve 19 and the second valve can be opened simultaneously, allowing some other components above and below the tar to be discharged simultaneously. This also shortens the time required to discharge the tar and other components in the tar mixture during tar separation, facilitating the subsequent separation of the tar mixture.

[0024] The first chamber 1 is also provided with an exhaust port communicating with the first cavity below, and an exhaust valve 18 is provided at the exhaust port. After the tar separation is completed, the exhaust valve 18 can be opened to allow the non-tar components in the tar mixture accumulated in the first cavity to be discharged quickly. The first valve 19, the second valve and the exhaust valve 18 can be solenoid valves.

[0025] When the detection component includes two densitometers, as shown in the figure, these two densitometers are respectively labeled as the first densitometer 8 and the second densitometer 9. The first densitometer 8 and the second densitometer 9 are arranged at intervals from top to bottom in the first housing 1. The interval between the first densitometer 8 and the second densitometer 9 needs to be large enough to reduce the deviation between the density value detected by the densitometer and the actual density of the tar mixture caused by the two densitometers being too close. This allows the operator to more accurately judge when to open the first valve 19, so as to reduce the situation where the components in the tar mixture have not been completely settled before the first valve 19 is opened, resulting in the discharged tar containing a large number of other components, thus ensuring the purity of the separated tar.

[0026] When the detection assembly includes two or more densitometers, the densitometers are arranged continuously from top to bottom or spaced out from top to bottom, depending on the liquid level of the tar mixture entering the first chamber, the quantity of components in the tar mixture, and the separation requirements.

[0027] like Figure 1 As shown, the buffer assembly includes a first baffle 5 and a second baffle 6 spaced apart along the flow direction of the tar mixture in the first cavity. The opposite ends of the first baffle 5 and the second baffle 6 are respectively connected to the opposite sides of the inner wall of the first housing 1. The first channel includes the area between the opposite ends of the first baffle 5 and the second baffle 6 and the inner wall of the first housing 1. The first baffle 5 and the second baffle 6 are arranged one above the other to form a tortuous first channel, so that the tar mixture entering the first cavity from the feed inlet 2 impacts the first baffle 5 and the second baffle 6 in sequence. Compared with the method of setting only one baffle, this improves the degree of weakening of the kinetic energy of the tar mixture, reduces the surface fluctuation of the tar mixture, and allows the components in the tar mixture to settle and separate more quickly. The first baffle 5 and the second baffle 6 are vertically arranged on the inner wall of the first housing 1, or, if the working conditions require, the first baffle 5 and / or the second baffle 6 can also be inclinedly arranged on the inner wall of the first housing 1.

[0028] Furthermore, the buffer assembly also includes several third baffles 7 that are inclinedly arranged in the first cavity and located on the side of the second baffle 6 near the first discharge port 3. Since the greater the weight of the object, the greater the component force that slides downward on the same inclined plane, and the faster it slides downward, when the tar mixture flows through the third baffle 7, under the action of the inclined plane of the third baffle 7, the components with higher density in the tar mixture slide downward faster than the components with lower density, which accelerates the settling and stratification of different components in the tar mixture.

[0029] The first baffle 5, the second baffle 6, and the third baffle 7 represent different configurations of the baffles mentioned above. The first baffle 5, the second baffle 6, and the third baffle 7 can be flat, arc-shaped, stepped, or other shapes that can stabilize the flow and reduce surface fluctuations in the tar mixture. The first baffle 5, the second baffle 6, and the third baffle 7 can be fixed to the inner wall of the first housing 1 by welding, bonding, or bolting. Multiple first baffles 5 and second baffles 6 can be provided, and adjacent first baffles 5 and adjacent second baffles 6 can be spaced equally or unequally according to operating conditions. Similarly, adjacent third baffles 7 can be spaced equally or unequally.

[0030] And / or, the inner corners of the first chamber 1 are provided with a rounded transition area, that is, the corners of the inner wall of the first chamber 1 are rounded by manual or mechanical means, so that the corners of the inner wall of the first chamber 1 are rounded. This reduces the possibility that the tar mixture will drop sharply in flow rate and become stuck in the corners of the inner wall of the first chamber 1 due to the abrupt change in shape when the corners of the inner wall of the first chamber 1 are not rounded. This reduces the accumulation of tar mixture in the first chamber 1 while separating tar, making subsequent cleaning of the first chamber 1 more convenient.

[0031] In addition to the separation mechanism 20, the tar separation device also includes a cooling mechanism 21. The cooling mechanism 21 includes a second channel and a third channel 13 connected together. The second channel is filled with a cooling medium, and the third channel 13 is filled with pyrolysis gas containing gaseous tar. The third channel 13 is connected to the feed inlet 2. The gaseous tar condenses into liquid tar upon entering the feed inlet 2, forming a tar mixture. The liquid tar enters the feed inlet 2 under a first force to facilitate subsequent tar separation. The cooling medium can be cooling air or cooling water with a temperature lower than that of the pyrolysis gas. The cooling medium achieves heat exchange between the second and third channels 13 through mutual contact. When the third channel 13 is vertically positioned, the primary force is the gravity of the liquid tar. When the third channel 13 is horizontally positioned, the primary force can be the airflow from the induced draft fan connected to the third channel 13. Under the action of the airflow, the pyrolysis gas is blown into the third channel 13, and the liquid tar is blown into the feed inlet 2. However, care must be taken not to make the airflow too strong to prevent the gaseous tar from entering the feed inlet 2 before cooling. The flow path of the gaseous tar in the third channel 13 must be long enough to ensure that the gaseous tar can condense and liquefy before entering the feed inlet 2. The pyrolysis gas is produced by the pyrolysis reaction of lignin-containing raw materials such as wood, straw, and sawdust under anaerobic or hypoxic conditions. The pyrolysis gas includes gaseous pyrolysis oil and gaseous tar. Alternatively, depending on the operating conditions, other types of tar, or other types of substances that are suitable for the tar separation device of this utility model, can also be separated.

[0032] The second and third channels 13 can be specific pipes, or, as... Figure 1 As shown, when the cooling medium is cooling air with a temperature lower than that of the pyrolysis gas, the cooling mechanism 21 includes a fan arranged towards the third channel 13. At this time, the second channel does not need a specific structure, and the space through which the cooling air passes around the third channel 13 can be regarded as the "second channel". At this time, the third channel 13 can be an air-cooled finned tube, and the pyrolysis gas and tar mixture flow in the third channel 13. The cooling structure also includes a second chamber 11 and a third chamber 12, which are respectively connected to both ends of the third channel 13. The second chamber 11 is located at the end of the third channel 13 away from and close to the first chamber 1, and is connected to the feed inlet 2. The second chamber 11 has a second cavity for storing tar mixture, and a discharge port and a pyrolysis gas outlet 15 connected to the second cavity. A water seal 17 is provided at the discharge port and is connected to the feed inlet 2 through a pipe. The third chamber 12 has a third cavity for storing pyrolysis gas, and a pyrolysis gas inlet 14 connected to the third chamber 12. A cover plate 16 is detachably fixed to the top of the third chamber 12. The first cavity and the second cavity are temporarily separated by the water seal 17. When the pressure of the tar mixture stored in the second cavity acting on the discharge port is greater than the static pressure of the water seal 17, the discharge port is opened and the mixture enters the first cavity. The specific structure of the water seal 17 is prior art and will not be described in detail.

[0033] like Figure 1 As shown, when the tar is wood tar, the working process of the tar separation device in this invention is as follows: Pyrolysis gas enters the third chamber 12 through the pyrolysis gas inlet 14 and then enters the third pipe. Because the wood tar in the pyrolysis gas will condense into liquid at temperatures below 200°C, after heat exchange with the cooling medium, the wood tar in the pyrolysis gas condenses to form condensate. The condensate, i.e., the tar mixture, enters the second chamber 11 through the third pipe. When the tar mixture stored in the second chamber 11 reaches a certain liquid level, it can enter the first chamber 1 through the discharge port equipped with a water seal 17 without gas leakage. When the third chamber 12 accumulates a certain amount of tar, cleaning fluid can be injected into the third chamber 12 through the removable cover plate 16 on the top of the third chamber 12 to clean the second chamber 11, the third chamber 12, and the third pipe.

[0034] After the tar mixture enters the first chamber, it collides with the first baffle 5 and the second baffle 6, reducing the kinetic energy of the tar mixture. After the tar mixture overflows the first baffle 5 and the second baffle 6, it comes into contact with the third baffle 7, further reducing the fluctuation of the condensate in the chamber and achieving a stable flow effect. The inclined setting also promotes the separation of wood tar and water (wood tar is heavier than water, and the inclined setting of the third baffle 7 allows the wood tar to sink to the bottom of the chamber along the flow stabilizing plate). When the density detected by the second densitometer 9 is greater than 1 (the density of pure water is about 1 g / cm³ at room temperature and pressure), it means that the wood tar has overflowed the second densitometer 9, and the first valve 19 is opened to discharge the wood tar. When the density detected by the first densitometer 8 is equal to 1, it means that the wood tar has been discharged, and the first valve 19 is closed.

[0035] The first chamber 1 and / or the second chamber 11 are provided with a visualization window on their side. The operator can observe the state of the tar mixture inside the first chamber 1 or the second chamber 11 in real time through the visualization window on the first chamber 1 or the second chamber 11 to determine whether the first chamber 1 or the second chamber 11 needs to be cleaned and whether the rate at which the tar mixture enters the feed inlet 2 needs to be adjusted. The visualization window is made of tempered glass with a light transmittance of 85% to 90%, or of quartz glass or other materials with sufficient strength and light transmittance (sufficient strength means that the visualization window will not be easily damaged by the internal pressure of the first chamber 1 or the second chamber 11 during the operation of the tar separation device, and sufficient strength means that the operator can clearly see the state of the tar mixture inside the first chamber 1 and / or the second chamber 11 through the visualization window).

[0036] In this document, "several" refers to at least one. "And / or" refers to text content preceding "and / or," and text content following "and / or" can exist simultaneously or individually. For example, "A and / or B" includes the existence of only A or B, as well as the simultaneous existence of A and B. This utility model discloses multiple technical solutions, but does not provide any contrary technical teachings. Any content not covered in this utility model is applicable to existing technologies.

[0037] This utility model uses specific examples to illustrate its principles and implementation methods. The above description of the embodiments is only for the purpose of helping to understand the method and core idea of ​​this utility model. At the same time, for those skilled in the art, there will be changes in the specific implementation methods and application scope based on the idea of ​​this utility model. In summary, the content of this specification should not be construed as a limitation of this utility model.

Claims

1. A tar separation device, characterized in that, The tar separation device includes a separation mechanism, which includes: A first housing has a first cavity for containing a tar mixture. The first housing is provided with an inlet and a first outlet communicating with the first cavity. The inlet is used to receive the tar mixture. The components in the tar mixture have different densities. A buffer assembly includes several partitions disposed in the first cavity. A first channel is formed between the partitions and the inner wall of the first housing, which communicates with the feed inlet and the first discharge outlet. The first channel is used for the flow of tar mixture. The detection component includes at least two densitometers fixed to the inner wall of the first housing and arranged sequentially from top to bottom. The densitometers are located above the first discharge port and are used to detect the density of the components in the tar mixture. An opening and closing assembly, comprising a first valve disposed at the first discharge port and used to control the opening and closing of the first discharge port.

2. The tar separation device according to claim 1, characterized in that, The first housing is also provided with a second discharge port located above the densitometer, and the opening and closing assembly also includes a second valve located at the second discharge port.

3. The tar separation device according to claim 1, characterized in that, The buffer assembly includes a first partition and a second partition spaced apart along the flow direction of the tar mixture in the first cavity. The opposite ends of the first partition and the second partition are respectively connected to the opposite sides of the inner wall of the first box. The first channel includes the area between the opposite ends of the first partition and the second partition and the inner wall of the first box.

4. The tar separation device according to claim 3, characterized in that, The buffer assembly includes several third partitions that are inclinedly disposed in the first cavity and located on the side of the second partition near the first discharge port.

5. The tar separation device according to claim 3, characterized in that, Tar is the densest component in the tar mixture; and / or, the inner wall corners of the first housing are provided with rounded transition areas.

6. The tar separation device according to claim 1, characterized in that, The detection component includes a first density meter and a second density meter arranged at intervals from top to bottom, with the first outlet located below the second density meter.

7. The tar separation device according to claim 1, characterized in that, The separation mechanism includes an exhaust port located on the top of the first housing and communicating with the first cavity; and / or, the first housing is provided with a safety valve communicating with the first cavity.

8. The tar separation device according to claim 1, characterized in that, The tar separation device further includes a cooling mechanism, which includes a second channel and a third channel in contact with each other. A cooling medium flows through the second channel, and pyrolysis gas containing gaseous tar flows through the third channel. The third channel is connected to the feed inlet. The cooling medium is at a temperature lower than the pyrolysis gas temperature; the gaseous tar condenses into liquid tar before entering the feed inlet, and the liquid tar moves into the feed inlet under the first force.

9. The tar separation device according to claim 8, characterized in that, The cooling medium is cooling air, and the third channel is vertically arranged. The cooling mechanism further includes a fan facing the third channel, a second box and a third box respectively connected to both ends of the third channel. The second box is located at the end of the third channel near the first box and is connected to the feed inlet. The second box has a second cavity for storing tar mixture. The second box is provided with a discharge port and a pyrolysis gas outlet connected to the second cavity. A water seal is provided at the discharge port and is connected to the feed inlet. The third box has a third cavity for storing pyrolysis gas and a pyrolysis gas inlet connected to the third cavity.

10. The tar separation device according to claim 9, characterized in that, The first box and / or the second box are provided with a visualization window on their side, which is used to observe the state of the tar mixture inside the first box and / or the second box.

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