Rapid separation and extraction device for quinoline insoluble substances in coal tar

Abstract

The utility model discloses a device for quickly separating and extracting quinoline insoluble substances in coal tar, which comprises a separation box which is integrally of a big-end-up conical structure, a separation structure is mounted in the separation box and used for separating the quinoline insoluble substances, and the separation box moves circumferentially to accelerate separation of the quinoline insoluble substances; the feeding box is installed at the feeding area of the top of the separation box, a feeding port is formed in one side of the feeding box, a steam collecting pipe is arranged in the middle of the top of the feeding box, the bottom of the steam collecting pipe extends into the separation box, and the separation box and the feeding box rotate relatively. The evaporation structure is installed on the inner wall of the separation box and used for separating a solvent in the mixed liquid. According to the method, quinoline insoluble substances are separated from mixed suspension liquid in a centrifugal mode, separation of the quinoline insoluble substances is accelerated through a rotating separation box, separation liquid separated through a separation structure makes contact with an evaporation structure, liquid-liquid separation is carried out through the gasification temperature difference, and a solvent is collected in a steam mode; further, the separation of the quinoline insoluble and the separation of the solvent are completed.

Description

Technical Field

[0001] The utility model relates to the technical field of coal tar purification, in particular to a device for quickly separating and extracting quinoline insoluble matter in coal tar. Background Art

[0002] Quinoline insolubles refer to the components in coal tar or coal tar pitch that are insoluble in quinoline. It is referred to as QI for short. The content of quinoline insolubles is one of the main indicators to characterize the properties of coal tar pitch.

[0003] According to the formation process of quinoline insolubles, they can be divided into primary QI and secondary QI. Primary QI is formed during the coking process, and its content is mainly related to factors such as the type of coking coal, the bulk density of the coal charged to the furnace, the coking temperature and the coking time. It is also related to factors such as the charging state (cold charging or hot charging), the size and temperature of the QI in the top space of the carbonization chamber, the sealing degree of the furnace door, the temperature of the gas collecting pipe and the degree of purification of the coke oven gas. Primary QI contains two parts: inorganic QI and organic QI. Inorganic QI is the ash particles in the coal and other inorganic substances that fall into the coal tar during the coking process. When the particle size of these inorganic substances is as small as about 10μm, they cannot be precipitated and removed during the storage of coal tar, and exist in the coal tar in the form of colloids or suspensions, forming the inorganic QI of primary QI. Primary organic QI is a macromolecular aromatic hydrocarbon generated by the pyrolysis of carbon during coking and the thermal polymerization of the pyrolysis products. Its particle size is about 0.5μm. Primary organic QI also contains a small amount of coal and coke powder larger than 25μm. Secondary QI has little effect on the thermal expansion coefficient of carbon products, while the primary QI content has a great influence on the thermal expansion coefficient. This is because the increase of primary QI will make the coke present more mosaic structure, which is not conducive to the absorption of thermal expansion by micropores, and increases the thermal expansion coefficient of coke. Therefore, when asphalt is used as a raw material for making high-grade carbon products such as needle coke or asphalt carbon fiber, the primary quinoline insolubles must be removed.

[0004] The existing separation and extraction of quinoline insolubles generally uses quinoline solvent to dissolve to obtain quinoline mixed solution, filters to obtain quinoline insolubles, and then washes the quinoline insolubles with toluene and acetone in batches. This operation takes a long time to extract and has low efficiency. Summary of the invention

[0005] The technical problem to be solved by the utility model is: how to quickly separate quinoline insoluble matter from coal tar.

[0006] In order to solve the above technical problems, the inventors have obtained the technical solution of the utility model through practice and summary. The utility model adopts the following technical solution:

[0007] The device for rapid separation and extraction of quinoline insoluble matter in coal tar comprises:

[0008] The separation box is a cone-shaped structure with a large top and a small bottom. The top of the cone structure is a feeding area, and the bottom is provided with a discharging area. A separation structure is installed inside the separation box. The separation structure is used to separate quinoline insolubles. The separation box moves in a circumferential direction.

[0009] A feed box is installed at the feed area on the top of the separation box, and a feed port is provided on one side of the feed box. A steam collecting pipe is provided in the middle of the top, and the bottom of the steam collecting pipe extends into the separation box. The separation box and the feed box are relatively rotatable.

[0010] The evaporation structure is installed on the inner wall of the separation box and is used to separate the solvent in the mixed liquid.

[0011] Preferably, the separation structure comprises:

[0012] The centrifugal separation part is circumferentially distributed and includes an inner separation part and an outer separation part. The coverage area of ​​the inner separation part is smaller than the coverage area of ​​the outer separation part. The top height of the inner separation part is smaller than the top height of the outer separation part. A baffle is installed on the top of the outer separation part. A baffle ring extending downward is arranged on the inner side of the baffle. The baffle ring is located inside the top of the inner separation part.

[0013] The guide part is a plurality of guide plates spirally distributed in the height direction. The guide plates are installed between the outer separation part and the inner separation part. Filter holes are arranged on the guide plates. The inclination angle of the guide plates gradually increases as the height decreases. The guide plates are used to guide the quinoline insoluble matter downward.

[0014] In a preferred embodiment, the guide plate includes a mounting plate body one, a mounting plate body two and a guide plate body, the mounting plate body one and the mounting plate body two are provided with connecting holes, the guide plate body is fixed between the mounting plate body one and the mounting plate body two, and the angle between the side away from the mounting plate body one and the side facing the movement direction of the quinoline insoluble matter and the mounting plate body one is an acute angle, and the filter holes are evenly distributed on the guide plate body.

[0015] Preferably, a discharging structure is installed at the separation box located in the discharging area, and the discharging structure includes:

[0016] A connecting flange is fixedly installed at the bottom of the separation box;

[0017] A collecting barrel 1, which is located at the bottom of the separation box, the top of the collecting barrel 1 and the connecting flange are rotatably installed, a discharge pipe 1 is installed at the bottom of the collecting barrel 1, and the discharge pipe 2 is fixed at the middle of the collecting barrel 1;

[0018] The collecting barrel is rotatably matched with the separation box, so that when the separation box rotates to separate the quinoline insoluble matter, it is convenient to collect it at the bottom.

[0019] A second collecting barrel, the top of which is provided with a trumpet collecting port, the trumpet collecting port is located at the bottom of the separation structure, and a second discharge pipe is installed at the bottom of the second collecting barrel;

[0020] Valve plates are installed at both the first and second discharge pipes, and the valve plates serve as a switch structure for actively discharging materials.

[0021] The preferred solution further includes a driving mechanism, and a gear is installed at the bottom of the separation box, and the driving mechanism drives the gear to rotate through the transmission structure.

[0022] The preferred solution also includes a condenser and a collecting barrel three. The condenser is installed on the top of the collecting barrel three, and the side is connected to the steam collecting pipe through a pipeline. A cover plate is provided on the top of the intersection of the steam collecting pipe and the collecting barrel three, and the bottom of the cover plate is an open structure.

[0023] Compared with the prior art, the utility model has the following beneficial effects:

[0024] The utility model separates quinoline insolubles from a mixed suspension by centrifugation, and uses a rotating separation box to accelerate the separation and purity of the quinoline insolubles. The separated liquid after the quinoline insolubles are separated by the separation structure contacts the evaporation structure, and the liquid-liquid separation is performed by utilizing the vaporization temperature difference. The solvent is collected in the form of steam, thereby completing the separation of the quinoline insolubles and the separation of the solvent.

[0025] The utility model adopts an internal and external separation method in the separation structure. The mixed suspension first falls, and under the reverse action of the separation structure, moves upward from the internal separation to the external separation, and then is separated downward through the guide plate, effectively shortening the size of the separation structure. The guide part increases the inclination angle of the lower guide plate to transport the separated quinoline insoluble matter downward, further improving the separation degree and ensuring the purity of the collected quinoline insoluble matter. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0027] Figure 2 for Figure 1 A partial enlarged view of the middle A;

[0028] Figure 3 It is a schematic diagram of the structure inside the separation box of the utility model;

[0029] Figure 4 It is a horizontal cross-sectional view of the separation box of the utility model;

[0030] Figure 5 This is a structural diagram of the guide plate of the utility model;

[0031] Figure 6 This is an internal structure diagram of the collecting tube 1 of the utility model;

[0032] Figure 7 This is a structural diagram of the steam collecting pipe of the utility model being introduced into the third part of the collecting tube. DETAILED DESCRIPTION

[0033] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0034] In the description of the present invention, it should be understood that the terms "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inside", "outside", etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore should not be understood as a limitation on the present invention.

[0035] Example

[0036] A device for rapid separation and extraction of quinoline insoluble matter in coal tar, such as Figure 1 As shown, including:

[0037] The separation box 1 is a cone-shaped structure with a large top and a small bottom. The top of the cone-shaped structure is a feed area, and the bottom is provided with a discharge area. A separation structure 11 is installed inside the separation box 1. The separation structure 11 is used to separate quinoline insolubles. The separation box 1 moves circumferentially to efficiently separate quinoline insolubles to ensure that the purity of the extracted quinoline and the residual amount in the coal tar are less than 0.06%;

[0038] A feed box 2 is installed at the feed area on the top of the separation box 1, and a feed port is provided on one side thereof. A steam collecting pipe 21 is provided in the middle of the top. The bottom of the steam collecting pipe 21 extends into the separation box 1. The separation box 1 and the feed box 2 are relatively rotatable.

[0039] The evaporation structure 3 is installed on the inner wall of the separation box 1 and is used to separate the solvent in the mixed liquid. Figure 4 As shown, the evaporation structure 3 is a heating tube 31 embedded in the inner wall of the separation box 1 and a heat conducting plate 32 covering the outer side of the heating tube 31. The heat conducting plate 32 is kept at a constant temperature through the heating tube 31, and after the mixed liquid after the quinoline insoluble matter is separated comes into contact, the solvent inside it will vaporize and volatilize, and enter the steam collecting pipe 21 at the top of the separation box 1.

[0040] Coal tar and quinoline are placed in a 75°C constant temperature water bath and stirred to obtain a mixed suspension, which then enters the separation box 1 through the feed port of the feed box 2. After entering the separation box 1, the mixed suspension will move circumferentially, and the separation structure 11 will separate the mixed suspension into solid and liquid. The quinoline insoluble matter will remain in the separation structure 11. When the separation structure 11 moves circumferentially, the quinoline insoluble matter will be processed downward and then discharged from the discharge area. The mixed liquid from which quinoline insoluble matter is separated will be acted on the evaporation structure 3 by centrifugal force, and the internal solvent will be vaporized and volatilized, and enter the steam collection pipe 21 at the top. The remaining liquid will move downward along the evaporation structure 3, and finally the discharge will be completed through the discharge area.

[0041] Based on the above embodiments:

[0042] like Figure 1 , 2 As shown in 6, a discharging structure is installed at the separation box 1 located in the discharging area, and the discharging structure includes:

[0043] A connecting flange 12, the connecting flange 12 is fixedly mounted on the bottom of the separation box 1;

[0044] A collecting barrel 13, the collecting barrel 13 is located at the bottom of the separation box 1, the top of the collecting barrel 13 and the connecting flange 12 are rotatably installed, and a discharge pipe 131 is installed at the bottom of the collecting barrel 13;

[0045] The collecting barrel 13 is rotatably matched with the separation box 1, so that when the separation box 1 rotates to separate the quinoline insoluble matter, it is convenient to collect it at the bottom.

[0046] The second collecting barrel 14 has a trumpet collecting port at the top thereof, and the trumpet collecting port is located at the bottom of the separation structure 11. A second discharge pipe 141 is installed at the bottom of the second collecting barrel 14, and the second discharge pipe 141 is fixed at the middle of the first collecting barrel 13;

[0047] Valve plates are installed at both the discharge pipe 1 131 and the discharge pipe 2 141 , and the valve plates serve as a switch structure for actively discharging materials.

[0048] The materials are collected and discharged through collecting barrel 1 13 and collecting barrel 2 14 respectively.

[0049] Based on the above embodiments:

[0050] like Figure 1 As shown, it also includes a condenser 22 and a collecting barrel 3 23. The condenser 22 is installed on the top of the collecting barrel 3 23, and the side is connected to the steam collecting pipe 21 through a pipeline. Figure 7As shown, a cover plate 24 is provided at the top of the intersection of the steam collecting pipe 21 and the collecting barrel 3 23, and the bottom of the cover plate 24 is an open structure. The steam collecting pipe 21 is introduced into the condenser 22 and condensed and collected in the collecting barrel 3 23 for recycling.

[0051] Based on the above embodiments:

[0052] like Figure 2 As shown, the separation box 1 further includes a driving mechanism 16. A gear 15 is installed at the bottom of the separation box 1. The driving mechanism 16 drives the gear 15 to rotate through a transmission structure. The driving mechanism 16 is preferably a combination structure of a motor and a reducer. The driving mechanism 16 drives the gear 15 to rotate through a transmission gear at the output end of the reducer, thereby driving the separation box 1 to rotate and separate the quinoline insoluble matter.

[0053] Based on the above embodiments:

[0054] The separation structure 11 comprises:

[0055] like Figure 3 , 4 As shown, the centrifugal separation part 111 is circumferentially distributed and includes an inner separation part 1111 and an outer separation part 1112. The coverage area of ​​the inner separation part 1111 is smaller than the coverage area of ​​the outer separation part 1112. The top height of the inner separation part 1111 is smaller than the top height of the outer separation part 1112. A baffle 1113 is installed on the top of the outer separation part 1112. A baffle ring 1114 extending downward is arranged on the inner side of the baffle 1113. The baffle ring 1114 is located inside the top of the inner separation part 1111. The bottom of the inner separation part 1111 is higher than the bottom of the outer separation part 1112 and is approximately above the middle of the outer separation part 1112. The bottom of the inner separation part 1111 is a blocking plate to prevent quinoline insolubles from falling directly. A plurality of support columns are arranged between the outer separation part and the evaporation structure 3 to fix the outer separation structure 1112, and the baffle 1113 is also fixed on the evaporation structure 3.

[0056] The guide part 112 is a plurality of guide plates 1121 which are spirally distributed in the height direction. The guide plates 1121 are installed between the outer separation part 1112 and the inner separation part 1111. Filter holes are arranged on the guide plates 1121. The inclination angle of the guide plates 1121 gradually increases as the height decreases. The guide plates 1121 are used to guide the quinoline insoluble matter downward.

[0057] By adopting the internal and external separation mode for the centrifugal separation part 111, the mixed suspension enters the separation box 1 and is firstly separated from the quinoline insolubles along the internal separation part 1111. The quinoline insolubles part first goes down in the centrifugal separation part 111, and part goes up directly due to the reverse action of the centrifugal structure 11. The part that goes down first is blocked by the blocking plate to prevent it from falling, and then enters the external separation part 1112 through the baffle plate 1113 on the top for further separation. When separating in the external separation part 1112, since the guide plate 1121 is gradually increased in inclination angle as it decreases in height, the guide plate 1121 actively moves downward to increase the separation force, thereby ensuring the purity of the separated quinoline insolubles.

[0058] Based on the above embodiments:

[0059] like Figure 5 As shown, the guide plate 1121 includes a mounting plate body 11211, a mounting plate body 11213 and a guide plate body 11212, and the mounting plate body 11211 and the mounting plate body 11213 are provided with connecting holes, the mounting plate body 11211 and the outer separation part 1112 are connected and fixed, and the guide plate 1121 is divided into two parts, the upper part is installed between the outer separation part 1112 and the inner separation part 1111, and the lower part is only installed on the outer separation part 1112, the mounting plate body 11212 located in the upper part is connected and fixed to the inner separation part 1111, the guide plate body 11212 is fixed between the mounting plate body 11211 and the mounting plate body 11213, and the angle between the side away from the mounting plate body 11211 and the side facing the movement direction of the quinoline insoluble matter and the mounting plate body 11211 is an acute angle, and the filter holes are evenly distributed on the guide plate body 11212. The guide plate 11212 is used to further separate the quinoline insoluble matter, and secondly, guide the quinoline insoluble matter downward step by step to improve the degree of separation. Thirdly, the support and fixing mounting plate 1 11211 and mounting plate 2 11213 ensure the integrity of the inner separation part 1111 and the outer separation part 1112.

[0060] The above is only a preferred specific implementation of the utility model, but the protection scope of the utility model is not limited to this. A material guide table with a triangular cross-section is provided at the bottom of the feed box to facilitate downward material guidance. The replacement can be a replacement of part of the structure, device, method step, or a complete technical solution. Equivalent replacement or change based on the technical solution of the utility model and its inventive concept should be included in the protection scope of the utility model.

Claims

1. A device for rapidly separating and extracting quinoline insoluble matter in coal tar, characterized in that: include: The separation box is a cone-shaped structure with a large top and a small bottom. The top of the cone structure is a feeding area, and the bottom is provided with a discharging area. A separation structure is installed inside the separation box. The separation structure is used to separate quinoline insolubles. The separation box moves in a circumferential direction. A feed box is installed at the feed area on the top of the separation box, and a feed port is provided on one side of the feed box. A steam collecting pipe is provided in the middle of the top, and the bottom of the steam collecting pipe extends into the separation box. The separation box and the feed box are relatively rotatable. The evaporation structure is installed on the inner wall of the separation box and is used to separate the solvent in the mixed liquid.

2. The device for rapid separation and extraction of quinoline insoluble matter in coal tar according to claim 1, characterized in that: The separation structure comprises: The centrifugal separation part is circumferentially distributed and includes an inner separation part and an outer separation part. The coverage area of ​​the inner separation part is smaller than the coverage area of ​​the outer separation part. The top height of the inner separation part is smaller than the top height of the outer separation part. A blocking plate is provided at the bottom of the inner separation part, and a baffle is installed at the top of the outer separation part. A baffle ring extending downward is provided on the inner side of the baffle, and the baffle ring is located inside the top of the inner separation part. The guide part is a plurality of guide plates spirally distributed in the height direction. The guide plates are installed between the outer separation part and the inner separation part. Filter holes are arranged on the guide plates. The inclination angle of the guide plates gradually increases as the height decreases. The guide plates are used to guide the quinoline insoluble matter downward.

3. The device for rapid separation and extraction of quinoline insoluble matter in coal tar according to claim 2, characterized in that: The guide plate comprises a mounting plate body 1, a mounting plate body 2 and a guide plate body, the mounting plate body 1 and the mounting plate body 2 are provided with connecting holes, the guide plate body is fixed between the mounting plate body 1 and the mounting plate body 2, and the angle between the side away from the mounting plate body 1 and the side facing the movement direction of the quinoline insoluble matter and the mounting plate body 1 is an acute angle, and the filter holes are evenly distributed on the guide plate body.

4. The device for rapid separation and extraction of quinoline insoluble matter in coal tar according to claim 1, characterized in that: A discharging structure is installed at the separation box located in the discharging area, and the discharging structure includes: A connecting flange is fixedly installed at the bottom of the separation box; A collecting barrel 1, which is located at the bottom of the separation box, the top of the collecting barrel 1 and the connecting flange are rotatably installed, and a discharge pipe 1 is installed at the bottom of the collecting barrel 1; The second collecting barrel has a trumpet collecting port at the top thereof, the trumpet collecting port is located at the bottom of the separation structure, and a discharge pipe 2 is installed at the bottom of the second collecting barrel, and the discharge pipe 2 is fixed at the middle of the first collecting barrel; Valve plates are installed at both the first and second discharge pipes, and the valve plates serve as a switch structure for actively discharging materials.

5. The device for rapid separation and extraction of quinoline insoluble matter in coal tar according to claim 1, characterized in that: The separation box also includes a driving mechanism. A gear is installed at the bottom of the separation box. The driving mechanism drives the gear to rotate through the transmission structure.

6. The device for rapid separation and extraction of quinoline insoluble matter in coal tar according to any one of claims 1 to 5, characterized in that: It also includes a condenser and a collecting barrel three. The condenser is installed on the top of the collecting barrel three, and the side is connected with the steam collecting pipe through a pipeline. A cover plate is arranged on the top of the intersection of the steam collecting pipe and the collecting barrel three, and the bottom of the cover plate is an open structure.

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