Needle coke settling tank
By designing a needle-shaped coke settlement tank without stirring, using the combination of multiple sections and heating parts in the tank body, the problems of stirring leakage and production shutdown of existing settlement tanks are solved, and the continuous operation and cost reduction of settlement tanks are achieved.
Patent Information
- Application Number
- CN202421419285.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-06-20
- Publication Date
- 2025-04-15
- Estimated Expiration
- 2034-06-20
AI Technical Summary
The existing settlement tanks have a risk of mixing leakage during the production process, resulting in production shutdown and maintenance, and the mixing structure increases energy consumption and maintenance costs.
A needle-shaped coke settlement tank without the stirring of the top and bottom is designed, and continuous production is achieved through the combination of the first cylindrical section, the inverted cone section, the second cylindrical section, the feed pipe, the distributor and the heating element in the tank body.
The mixing structure is simplified, the installation cost is reduced, and the maintenance problem of work and maintenance caused by stirring oil leakage is avoided, the continuous operation of the settlement tank is ensured, and energy consumption and maintenance costs are reduced.
Smart Images
Figure CN222752609U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of sedimentation separation tanks, in particular to a needle coke sedimentation tank. Background Art
[0002] Needle coke is a high-quality raw material for producing ultra-high power graphite electrodes and negative electrode materials. The stability of needle coke products is an important indicator for evaluating product quality. In order to ensure the stability of needle coke products, the raw materials for producing needle coke must be stable. In the pretreatment of coal-based needle coke raw materials, the settling tank is the most important equipment to ensure the quality of raw material pretreatment products. The smooth operation of this equipment determines the stability of needle coke product quality to a certain extent.
[0003] Most of the existing settling tanks are equipped with a stirring scraper on the top to scrape the asphalt attached to the bottom to the bottom of the settling tank and then pump it out. In addition, a stirring device is installed at the bottom of the settling tank to increase fluidity by stirring and scraping the asphalt and mixing the light components. However, it is found in the actual production process that there is a risk of leakage in the stirring at the bottom of the settling tank. Once a leakage occurs, the operation must be stopped for emergency repairs, which prevents the production from being carried out continuously and delays the production progress. In addition, the method of installing stirring devices at the top and bottom also increases the investment in the stirring structure, resulting in high energy consumption and maintenance costs caused by continuous stirring during the production process.
[0004] Therefore, it is urgent to design a new sedimentation tank structure that does not require stirring and can ensure the continuity of production operation. Utility Model Content
[0005] The utility model aims to provide a needle coke settling tank, which simplifies the stirring structure of the existing settling tank. Through the design of the first cylindrical section, the inverted cone section, the second cylindrical section, the feed pipe, the distributor and the heating element in the tank body, no top and bottom stirring structures are required, the installation cost of the stirring structure is reduced, the problem of shutdown maintenance due to stirring oil leakage in the production process is eliminated, and the continuity of the settling tank in production operation is ensured.
[0006] In order to solve the above technical problems, the utility model provides a needle coke settling tank, including a tank body, one side of the tank body is connected to a mixer through a pipeline, a heavy phase delivery pump is arranged between the mixer and the tank body, the tank body includes a first cylindrical section, an inverted cone section and a second cylindrical section connected in sequence from top to bottom, a feed pipeline is arranged on one side of the first cylindrical section, a feed pipe is connected in the feed pipeline, a distributor is connected at the lower end of the feed pipe, the lower end of the distributor extends into the second cylindrical section, a heavy phase oil production outlet is opened on one side of the bottom of the second cylindrical section, the heavy phase oil production outlet is connected to the heavy phase delivery pump through a pipeline, asphalt is adhered to the inner wall of the inverted cone section, and heating elements are arranged on the outer sides of the inverted cone section and the second cylindrical section.
[0007] Furthermore, the feed pipe is perpendicular to the tank body and arranged along the axial direction of the tank body, and the diameter of the feed pipe is larger than the inner diameter of the feed pipeline.
[0008] Furthermore, the distributor is cylindrical and includes a connecting section and a diversion section arranged in sequence from top to bottom, the connecting section is sleeved on the outside of the end of the feed pipe, the bottom of the diversion section is a closed structure, and a plurality of distribution ports are opened on the outer wall of the diversion section.
[0009] Furthermore, several of the distribution openings are in strip shape and are evenly distributed along the circumferential direction of the outer wall.
[0010] Furthermore, the size of the material distribution opening is 30*400mm.
[0011] Furthermore, the distance from the bottom of the distributor to the upper part of the heavy phase oil production port is 1 m.
[0012] Furthermore, the heating element is a jacket, and the jacket is provided with a medium inlet and a medium outlet, and the medium inlet and the medium outlet are arranged on the same side.
[0013] The beneficial effects of the utility model are:
[0014] 1. The utility model simplifies the stirring structure of the existing settling tank. Through the design of the first cylindrical section, the inverted cone section, the second cylindrical section, the feed pipe, the distributor and the heating element in the tank body, there is no need for top and bottom stirring structures, which reduces the installation cost of the stirring structure, eliminates the problem of maintenance shutdown due to stirring oil leakage during the production process, and ensures the continuity of the settling tank in production operation.
[0015] 2. The utility model reduces the sedimentation interface through the design that the lower end of the distributor extends into the second cylindrical section, and the material is evenly fed into the bottom of the sedimentation tank through the evenly distributed distribution ports, which increases the turbulence at the bottom of the sedimentation tank and prevents the blockage of the heavy phase oil production port. At the same time, the mixed oil is fed from the bottom to increase the sedimentation distance of the light phase oil, prolong the sedimentation time, and is more conducive to the complete sedimentation of quinoline insolubles.
[0016] 3. In the utility model, the feed pipe is perpendicular to the tank body and arranged along the axial direction of the tank body. The diameter of the feed pipe is larger than the inner diameter of the feed pipe, so that it is not easy to be blocked during feeding. The design of the feed pipe being larger than the inner diameter of the feed pipe can reduce the material flow rate and reduce the disturbance of the static sedimentation state due to excessive flow rate.
[0017] 4. The utility model can evenly heat the asphalt attached to the cone of the settling tank through the design of the jacket, so that the asphalt attached to the tank wall is softened, and the asphalt flows to the bottom of the tank for extraction after the fluidity is increased, reducing the blockage caused by excessive asphalt deposition. If the settling tank is continuously fed, the asphalt under the sedimentation is heated by the heating jacket, and the fluidity of the asphalt is improved, and it flows along the tank wall to the asphalt extraction port at the bottom of the tank for extraction. BRIEF DESCRIPTION OF THE DRAWINGS
[0018] In order to more clearly illustrate the technical solution of the present invention, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.
[0019] Figure 1 It is a structural schematic diagram of the needle coke settling tank of the utility model;
[0020] Figure 2 It is a structural schematic diagram of the distributor of the utility model;
[0021] In the figure: 1-tank body, 2-mixer, 3-heavy phase delivery pump, 4-feeding pipe, 5-distributor, 6-jacket, 11-first cylindrical section, 12-inverted cone section, 13-second cylindrical section, 111-feeding pipeline, 131-heavy phase oil production outlet, 51-connecting section, 52-diverting section, 521-distributing port, 61-medium inlet, 62-medium outlet. DETAILED DESCRIPTION
[0022] The following will be combined with the drawings of the utility model specification to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.
[0023] In a specific embodiment of the present invention, Figure 1-2 As shown, a needle coke settling tank comprises a tank body 1, one side of the tank body 1 is connected to a mixer 2 through a pipeline, a heavy phase delivery pump 3 is provided between the mixer 2 and the tank body 1, and the mixer 2 can fully mix the light components and heavy components in the heavy phase oil, so that the heavy phase oil is mixed more evenly and the mass flow rate is more stable;
[0024] The tank body 1 includes a first cylindrical section 11, an inverted cone section 12 and a second cylindrical section 13 which are connected in sequence from top to bottom. A feed pipe 111 is provided on one side of the first cylindrical section 11. A feed pipe 4 is connected to the feed pipe 111. The feed pipe 4 is fixed to the center of the tank body 1 in a common fixing method, so it will not be described in detail.
[0025] The lower end of the feed pipe 4 is connected to a distributor 5, and the lower end of the distributor 5 extends into the second cylindrical section 13. A heavy phase oil production outlet 131 is opened on one side of the bottom of the second cylindrical section 13. The distance from the bottom of the distributor 5 to the upper part of the heavy phase oil production outlet is 1m. The heavy phase oil production outlet 131 is connected to the heavy phase delivery pump 3 through a pipeline. Asphalt is adhered to the inner wall of the inverted cone section 12, and a heating element is provided on the outer side of the inverted cone section 12 and the second cylindrical section 13.
[0026] like Figure 1 As shown, in this embodiment, the feed pipe 4 is perpendicular to the tank body 1 and is arranged along the axial direction of the tank body 1. The diameter of the feed pipe 4 is larger than the inner diameter of the feed pipe 111. The vertical feed pipe 4 is not easy to be blocked, and the design of the feed pipe 4 being larger than the inner diameter of the feed pipe 111 can reduce the material flow rate and reduce the disturbance of the static sedimentation state due to excessive flow rate.
[0027] Specifically, Figure 2 As shown, in this embodiment, the distributor 5 is cylindrical and includes a connecting section 51 and a diverter section 52 which are arranged in sequence from top to bottom. The connecting section 51 is sleeved on the outside of the end of the feed pipe 4, and the bottom of the diverter section 52 is a closed structure, and a plurality of distribution openings 521 are opened on the outer wall of the diverter section 52; the plurality of distribution openings 521 are strip-shaped and evenly distributed along the circumferential direction of the outer wall. Of course, in other embodiments, they can also be designed into other shapes. The evenly distributed strip-shaped distribution openings can make the mixed material evenly enter the bottom of the sedimentation tank, increase the turbulence at the bottom of the sedimentation tank, and prevent the heavy phase oil production outlet from being blocked. At the same time, the design that the lower end of the distributor 5 extends into the second cylindrical section 13 reduces the sedimentation interface, increases the sedimentation distance of the light phase oil, and prolongs the sedimentation time, which is more conducive to the complete sedimentation of quinoline insolubles.
[0028] In this embodiment, the size of the material distribution opening 521 is 30*400 mm.
[0029] In this embodiment, the heating element is a jacket 6, and a medium inlet 61 and a medium outlet 62 are provided on the jacket 6, and the medium inlet 61 and the medium outlet 62 are arranged on the same side. Through the design of the jacket, the asphalt attached to the cone of the settling tank can be evenly heated, so that the asphalt attached to the tank wall is softened, and the asphalt flows to the bottom of the tank for extraction after the fluidity is increased, thereby reducing the blockage caused by excessive asphalt deposition. If the settling tank is continuously fed, the fluidity of the asphalt under sedimentation is improved after being heated by the heating jacket 10, and the asphalt flows along the tank wall to the asphalt extraction outlet at the bottom of the tank for extraction. Here, the heating medium can be heat transfer oil or high-temperature steam.
[0030] The above disclosure is only a preferred embodiment of the present invention, and certainly cannot be used to limit the scope of rights of the present invention. Therefore, equivalent changes made according to the claims of the present invention are still within the scope covered by the present invention.
Claims
1. A needle coke settling tank, characterized in that: The invention comprises a tank body (1), one side of which is connected to a mixer (2) via a pipeline, a heavy phase delivery pump (3) is provided between the mixer (2) and the tank body (1), the tank body (1) comprises a first cylindrical section (11), an inverted cone section (12) and a second cylindrical section (13) which are connected in sequence from top to bottom, a feed pipeline (111) is provided on one side of the first cylindrical section (11), a feed pipe (4) is connected to the feed pipeline (111), and the feed pipe (4) is connected to the feed pipe (111). The lower end of the material pipe (4) is connected to a distributor (5), the lower end of the distributor (5) extends into the second cylindrical section (13), a heavy phase oil production outlet (131) is opened on one side of the bottom of the second cylindrical section (13), and the heavy phase oil production outlet (131) is connected to the heavy phase delivery pump (3) through a pipeline. Asphalt is adhered to the inner wall of the inverted cone section (12), and heating elements are provided on the outer sides of the inverted cone section (12) and the second cylindrical section (13).
2. The needle coke settling tank according to claim 1, characterized in that: The feed pipe (4) is perpendicular to the tank body (1) and is arranged along the axial direction of the tank body (1); the diameter of the feed pipe (4) is greater than the inner diameter of the feed pipeline (111).
3. The needle coke settling tank according to claim 1, characterized in that: The distributor (5) is cylindrical and comprises a connecting section (51) and a diverter section (52) arranged in sequence from top to bottom, wherein the connecting section (51) is sleeved on the outer side of the end of the feed pipe (4), the bottom of the diverter section (52) is a closed structure, and a plurality of diverter openings (521) are provided on the outer wall of the diverter section (52).
4. The needle coke settling tank according to claim 3, characterized in that: The plurality of material distribution openings (521) are in a strip shape and are evenly distributed along the circumferential direction of the outer wall.
5. The needle coke settling tank according to claim 4, characterized in that: The size of the material distribution opening (521) is 30*400mm.
6. The needle coke settling tank according to claim 1, characterized in that: The distance from the bottom of the distributor (5) to the upper part of the heavy phase oil production port (131) is 1 m.
7. The needle coke settling tank according to claim 1, characterized in that: The heating element is a jacket (6), and a medium inlet (61) and a medium outlet (62) are provided on the jacket (6), and the medium inlet (61) and the medium outlet (62) are arranged on the same side.