A diesel hydrofining unit

Abstract

The utility model discloses a diesel oil hydrogenation refining device belongs to diesel oil hydrogenation refining technical field, and its technical scheme main points include base, and the present application is through setting up stirring and scraping mechanism, utilizes motor drive axle rod to drive main gear rotation, and through the meshing transmission of main gear and both sides secondary gear, makes secondary gear to drive the synchronous reverse rotation of stirring rod and turbulence helical blade on auxiliary shaft in its liquid storage cylinder inside, forms two -way convection circulation flow field, and stirring rod is in normal stirring, and through the axial pushing effect of turbulence helical blade, promotes liquid diesel oil, solid catalyst particle and gaseous hydrogen to mix fully, especially strengthens hydrogen gas bubble dispersion and catalyst particle suspension, also can through the scraping structure of axle rod bottom and the bottom side and inner wall rotation of liquid storage cylinder inside, effectively removes the wall material and prevents the bottom deposition accumulation, compared with single anchor type agitator, greatly shortens the mixing time, and improves the mixing quality simultaneously.

Description

Technical Field

[0001] This utility model relates to the field of diesel hydrorefining technology, and in particular to a diesel hydrorefining apparatus. Background Technology

[0002] Hydrogen treatment is an important refining method for diesel products. Specifically, in the presence of hydrogen pressure and a catalyst, harmful impurities such as sulfur, oxygen, and nitrogen in the oil are converted into hydrogen sulfide, water, and ammonia, which are then removed to improve the quality of the oil. Therefore, the addition of a catalyst is extremely important.

[0003] If the liquid storage tank of the diesel hydrorefining catalytic unit is left to stand still for a long time during use, it is easy for the liquid inside to precipitate or for the added catalyst to be mixed unevenly, which makes it inconvenient for people to operate and use.

[0004] An existing patent (publication number: CN222469061U) discloses a diesel hydrorefining catalytic device. This utility model designs a diesel hydrorefining catalytic device that uses an anchor-type stirrer to stir the liquid and catalyst inside the storage tank to make the mixture more uniform. It uses a temperature sensor to detect the temperature and uses branch nozzles to add liquid, making the liquid addition more convenient, thereby improving the efficiency of the diesel hydrorefining catalytic device.

[0005] To address the aforementioned issues, existing patents have provided solutions. However, the anchor-type agitators used in these patents are mainly suitable for mixing high-viscosity liquids. For diesel hydrorefining, which may involve a liquid-solid-gas three-phase mixture consisting of liquid diesel, solid catalyst particles, and gaseous hydrogen, a single anchor-type agitator cannot achieve rapid and uniform dispersion inside the storage tank. Furthermore, the liquid flow path is singular during agitation, making it impossible to form an efficient convection circulation, resulting in prolonged agitation time and reduced efficiency. In addition, during diesel hydrorefining, it is inevitable that there will be wall adhesion and sedimentation inside the storage tank, further affecting the quality of the mixed refining.

[0006] Therefore, a diesel hydrorefining device is proposed. Utility Model Content

[0007] The purpose of this invention is to provide a diesel hydrorefining apparatus that solves the problem that the anchor-type agitator used in the aforementioned patent is mainly suitable for mixing high-viscosity liquids. For diesel hydrorefining, which may involve a liquid-solid-gas three-phase mixture system composed of liquid diesel, solid catalyst particles, and gaseous hydrogen, a single anchor-type agitator cannot achieve rapid and uniform dispersion inside the storage tank. Furthermore, the liquid flow path is singular during the agitation process, making it impossible to form an efficient convection circulation, resulting in prolonged agitation time and reduced efficiency. At the same time, during the diesel hydrorefining process, the storage tank inevitably experiences wall adhesion and sedimentation, further affecting the quality of the mixed refining.

[0008] To achieve the above objectives, this utility model provides the following technical solution: a diesel hydrorefining device, including a base, a controller on the left side of the base, a liquid storage cylinder on the top of the base, a discharge valve connected to the bottom of the liquid storage cylinder, a stirring mechanism inside the liquid storage cylinder, and a liquid replenishment structure inside the liquid storage cylinder.

[0009] The stirring mechanism includes a support shell bolted to the top of the liquid storage cylinder. A motor is bolted to the top of the support shell, and the output end of the motor passes through the top of the support shell. A shaft is fixedly connected to the output end of the motor, and the bottom of the shaft passes through the top of the liquid storage cylinder. A main gear is fixedly connected to the top of the outer side of the shaft. Secondary gears are rotatably connected to both sides of the top of the liquid storage cylinder. The secondary gears mesh with the main gears. An auxiliary shaft is welded to the bottom of the secondary gears. A stirring rod is bolted to the outer side of the auxiliary shaft. Turbulent spiral blades are welded to the outer side of the stirring rod. A scraping structure is provided at the bottom of the shaft.

[0010] Preferably, the scraping structure includes a scraping plate bolted to the bottom of the outer side of the shaft, the bottom of which contacts the bottom side of the liquid storage cylinder.

[0011] Preferably, a stirring rod is fixedly connected to both the front and rear sides of the top of the scraper plate, and a diversion hole is provided on the outer side of the stirring rod.

[0012] Preferably, scraper rods are welded to both the front and rear sides of the top of the stirring rod, and the outer side of the scraper rod is in contact with the inner wall of the liquid storage cylinder.

[0013] Preferably, the liquid replenishment structure includes a bracket welded to the rear side of the base, a liquid filling tank is fixedly connected to the inner side of the top of the bracket, and a liquid outlet valve is connected to the bottom of the liquid filling tank. The liquid outlet valve is electrically connected to the controller.

[0014] Preferably, a liquid pump is provided on the rear side of the top of the liquid storage cylinder, the output end of the liquid pump passes through the top of the liquid storage cylinder, the absorption end of the liquid pump is connected to a suction tube, the top of the suction tube is connected to the bottom of the liquid outlet valve, a liquid storage tube is provided on the top side inside the liquid storage cylinder, the top of the liquid storage tube is connected to the output end of the liquid pump, and the bottom of the liquid storage tube is connected to an atomizing nozzle.

[0015] Preferably, a temperature sensor is provided on the left side of the liquid storage cylinder, and the sensing end of the temperature sensor is located inside the liquid storage cylinder.

[0016] Preferably, the top of the liquid addition tank is connected to a replenishment pipe, and the top of the replenishment pipe is provided with a sealing cap.

[0017] Compared with the prior art, the beneficial effects of this utility model are:

[0018] 1. This application sets up a scraping mechanism, which uses a motor to drive the shaft to rotate the main gear. The main gear meshes with the secondary gears on both sides, causing the secondary gears to drive the stirring rod and the turbulence spiral blades on the auxiliary shaft to rotate synchronously in opposite directions inside the liquid storage tank, forming a bidirectional convective circulation flow field. The stirring rod is in normal stirring, and the axial pushing action of the turbulence spiral blades promotes the thorough mixing of liquid diesel, solid catalyst particles and gaseous hydrogen, especially enhancing the dispersion of hydrogen bubbles and the suspension of catalyst particles. The scraping structure at the bottom of the shaft can also rotate in contact with the bottom side and inner wall of the liquid storage tank, effectively removing the material attached to the wall and preventing the accumulation of sediment at the bottom. Compared with a single anchor-type agitator, this greatly shortens the mixing time and improves the mixing quality.

[0019] 2. By setting up a liquid replenishment structure, this application can control the liquid solvent to be in an atomized and dispersed state when it is added into the storage cylinder. This works in conjunction with the stirring mechanism to avoid local concentration fluctuations caused by the addition of liquid solvent, thereby further ensuring the stability of the diesel hydrorefining process and the quality of the product. Attached Figure Description

[0020] Figure 1 This is an overall structural diagram of the diesel hydrorefining apparatus of this utility model;

[0021] Figure 2 This is a structural diagram of the liquid storage cylinder of this utility model;

[0022] Figure 3 This is a structural diagram of the agitation mechanism of this utility model;

[0023] Figure 4 This is a structural diagram of the scraping structure of this utility model;

[0024] Figure 5 This is a structural diagram of the fluid replenishment structure of this utility model.

[0025] In the diagram: 1. Base; 2. Controller; 3. Liquid storage tank; 4. Discharge valve; 5. Stirring mechanism; 51. Support shell; 52. Motor; 53. Shaft; 54. Main gear; 55. Secondary gear; 56. Auxiliary shaft; 57. Stirring rod; 58. Turbulent spiral blade; 59. Scraping structure; 591. Bottom scraper; 592. Bottom stirring rod; 593. Wall scraper; 6. Liquid replenishment structure; 61. Support; 62. Liquid filling tank; 63. Discharge valve; 64. Liquid pump; 65. Suction pipe; 66. Liquid storage pipe; 67. Atomizing nozzle; 7. Temperature sensor; 8. Replenishment pipe; 9. Sealing cap. Detailed Implementation

[0026] 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.

[0027] Please see Figure 1-5 The present invention provides the following technical solution:

[0028] A diesel hydrorefining device includes a base 1, a controller 2 on the left side of the base 1, a liquid storage cylinder 3 on the top of the base 1, a discharge valve 4 connected to the bottom of the liquid storage cylinder 3, a stirring mechanism 5 inside the liquid storage cylinder 3, and a liquid replenishment structure 6 inside the liquid storage cylinder 3.

[0029] The stirring mechanism 5 includes a support shell 51 bolted to the top of the liquid storage cylinder 3. A motor 52 is bolted to the top of the support shell 51. The output end of the motor 52 passes through the top of the support shell 51. A shaft 53 is fixedly connected to the output end of the motor 52. The bottom of the shaft 53 passes through the top of the liquid storage cylinder 3. A main gear 54 is fixedly connected to the top of the outer side of the shaft 53. Secondary gears 55 are rotatably connected to both sides of the top of the liquid storage cylinder 3. The secondary gears 55 mesh with the main gears 54. An auxiliary shaft 56 is welded to the bottom of the secondary gears 55. A stirring rod 57 is bolted to the outer side of the auxiliary shaft 56. A turbulence spiral blade 58 is welded to the outer side of the stirring rod 57. A scraping structure 59 is provided at the bottom of the shaft 53.

[0030] In this embodiment: By setting up a scraping mechanism 5 and a liquid replenishment structure 6, during operation, catalyst can be added through the input pipe at the top of the liquid storage cylinder 3. The motor 52 can start the drive shaft 53 to drive the main gear 54 to rotate. The main gear 54 meshes with the secondary gears 55 on both sides, causing the secondary gears 55 to drive the stirring rod 57 and the turbulence spiral blades 58 on the auxiliary shaft 56 to rotate synchronously in opposite directions inside the liquid storage cylinder 3. The axial pushing action of the turbulence spiral blades 58 forms a bidirectional convection circulation flow field, which promotes the full mixing of liquid diesel, solid catalyst particles and gaseous hydrogen, especially enhancing the dispersion of hydrogen bubbles and the suspension of catalyst particles. At the same time, the scraping structure 59 at the bottom of the shaft 53 rotates against the inner wall and bottom side of the liquid storage cylinder 3, continuously scraping off the material attached to the wall and preventing the accumulation of sediment at the bottom. The liquid replenishment structure 6 adds liquid solvent to the liquid storage cylinder 3 in an atomized and dispersed state, working in conjunction with the scraping mechanism 5 to avoid local concentration fluctuations, and finally achieving efficient and uniform mixing of the liquid-solid-gas three-phase system, improving the quality and efficiency of diesel hydrorefining.

[0031] Specifically, such as Figure 4As shown, the scraping structure 59 includes a scraping plate 591 bolted to the bottom of the outer side of the shaft 53, and the bottom of the scraping plate 591 contacts the bottom side inside the liquid storage cylinder 3.

[0032] Specifically, such as Figure 4 As shown, a stirring rod 592 is fixedly connected to the front and rear sides of the top of the scraper plate 591, and a diversion hole is provided on the outer side of the stirring rod 592.

[0033] Specifically, such as Figure 4 As shown, scraper rods 593 are welded to the front and rear sides of the top of the stirring rod 592, and the outer side of the scraper rod 593 is in contact with the inner wall of the liquid storage cylinder 3.

[0034] In this embodiment: by setting up a scraping structure 59, when the shaft 53 drives the scraper plate 591 to rotate against the bottom of the liquid storage cylinder 3, the scraper plate 591 can directly scrape off the catalyst particles and high-viscosity materials that have settled at the bottom, avoiding accumulation that affects mixing. At the same time, the stirring rod 592 on the scraper plate 591 rotates with the shaft 53, and the diversion hole on its outer side guides the liquid to flow laterally, avoiding sedimentation. Combined with the axial flow field of the turbulent spiral blade 58, a three-dimensional mixing effect is formed. The wall scraping rod 593 at the top of the stirring rod 592 rotates close to the inner wall of the cylinder, continuously removing the material hanging on the wall, preventing the material from adhering and solidifying, ensuring that the inner wall and bottom of the liquid storage cylinder 3 are always kept clean, and improving the mixing uniformity and reaction efficiency.

[0035] Specifically, such as Figure 5 As shown, the liquid replenishment structure 6 includes a bracket 61 welded to the rear side of the base 1. A liquid filling tank 62 is fixedly connected to the inner side of the top of the bracket 61. A liquid outlet valve 63 is connected to the bottom of the liquid filling tank 62. The liquid outlet valve 63 is electrically connected to the controller 2.

[0036] Specifically, such as Figure 5 As shown, a liquid pump 64 is installed on the rear side of the top of the liquid storage cylinder 3. The output end of the liquid pump 64 passes through the top of the liquid storage cylinder 3. The absorption end of the liquid pump 64 is connected to a suction tube 65. The top of the suction tube 65 is connected to the bottom of the liquid outlet valve 63. A liquid storage pipe 66 is installed on the top side inside the liquid storage cylinder 3. The top of the liquid storage pipe 66 is connected to the output end of the liquid pump 64. The bottom of the liquid storage pipe 66 is connected to an atomizing nozzle 67.

[0037] In this embodiment: by setting up the liquid replenishment structure 6, the liquid solvent in the liquid tank 62 flows into the suction pipe 65 through the liquid outlet valve 63, and is delivered to the storage pipe 66 by the liquid pump 64. It is then sprayed into the storage cylinder 3 in the form of fine droplets through the bottom atomizing nozzle 67. The atomized liquid solvent then comes into full contact with the convective airflow generated during bidirectional stirring and diffuses rapidly into the liquid diesel, avoiding the problem of sudden changes in local concentration caused by traditional direct injection liquid replenishment. At the same time, the atomization process increases the liquid surface area, accelerates the mass transfer process with hydrogen and catalyst, and forms a synergistic effect with stirring, further improving the stability and uniformity of multiphase mixing.

[0038] Specifically, such as Figure 1 , Figure 2 As shown, a temperature sensor 7 is provided on the left side of the liquid storage cylinder 3, and the sensing end of the temperature sensor 7 is located inside the liquid storage cylinder 3.

[0039] Specifically, such as Figure 5 As shown, the top of the liquid addition tank 62 is connected to a replenishment pipe 8, and a sealing cap 9 is provided on the top of the replenishment pipe 8.

[0040] In this embodiment: by setting a temperature sensor 7, a replenishment tube 8 and a sealing cap 9, the temperature sensor 7 monitors the reaction temperature in the liquid storage cylinder 3 in real time and feeds the data back to the controller 2 to achieve real-time temperature monitoring. The replenishment tube 8 is used to conveniently add liquid solvents or catalyst slurries, etc. The sealing cap 9 can prevent dust and impurities from entering the liquid addition tank 62, ensuring the purity of the materials, while avoiding the leakage of volatile gases, thus improving the safety and ease of operation of the device.

[0041] Working Principle: During the operation of the diesel hydrorefining unit, firstly, the liquid solvent is delivered to the storage pipe 66 via the liquid pump 64 through the liquid pump 64 and adjusted by the controller 2 using the liquid outlet valve 63 of the liquid tank 62. The solvent is then sprayed into the top of the storage cylinder 3 in the form of droplets through the atomizing nozzle 67 and diffused evenly to avoid sudden changes in local concentration. Simultaneously, if necessary, a solid catalyst can be added and hydrogen can be introduced through the input pipe at the top of the storage cylinder 3. Then, after starting the motor 52, its drive shaft 53 drives the main gear 54 to rotate. The main gear 54 meshes with the secondary gears 55 on both sides, causing the stirring rod 57 and the turbulence spiral blades 58 on the auxiliary shaft 56 to rotate synchronously in opposite directions. The turbulence spiral blades 58 form a turbulence-generating effect through axial pushing... The bidirectional convection flow field promotes the thorough mixing of liquid diesel, catalyst particles, and hydrogen, breaking the hydrogen into tiny bubbles and keeping the catalyst particles suspended. Simultaneously, the scraper plate 591 of the bottom scraper structure 59 of the shaft 53 closely adheres to the bottom of the liquid storage cylinder 3 to scrape away sediment. The bottom stirring rod 592 guides the liquid to flow laterally through the diversion hole to avoid bottom sedimentation, and the wall scraper 593 adheres to the inner wall of the cylinder to remove the material adhering to the wall. The temperature sensor 7 monitors the temperature inside the cylinder in real time and feeds it back to the controller 2. The uniformly mixed liquid is discharged through the discharge valve 4 at the bottom of the liquid storage cylinder 3. Through the coordinated bidirectional stirring and scraping, atomized liquid replenishment, and intelligent monitoring, the liquid-solid-gas three-phase system is efficiently mixed, improving the quality and efficiency of diesel hydrorefining.

[0042] The above are merely preferred embodiments of the present utility model and are not intended to limit the present utility model. Any modifications, equivalent substitutions, and improvements 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 diesel hydrorefining apparatus, comprising a base (1), characterized in that: A controller (2) is provided on the left side of the base (1), a liquid storage cylinder (3) is provided on the top of the base (1), a discharge valve (4) is connected to the bottom of the liquid storage cylinder (3), a stirring mechanism (5) is provided inside the liquid storage cylinder (3), and a liquid replenishment structure (6) is provided inside the liquid storage cylinder (3). The stirring mechanism (5) includes a support shell (51) bolted to the top of the liquid storage cylinder (3). A motor (52) is bolted to the top of the support shell (51). The output end of the motor (52) passes through the top of the support shell (51). A shaft (53) is fixedly connected to the output end of the motor (52). The bottom of the shaft (53) passes through the top of the liquid storage cylinder (3). A main gear (54) is fixedly connected to the top of the outer side of the shaft (53). Secondary gears (55) are rotatably connected to both sides of the top of the liquid storage cylinder (3). The secondary gears (55) mesh with the main gears (54). An auxiliary shaft (56) is welded to the bottom of the secondary gears (55). A stirring rod (57) is bolted to the outer side of the auxiliary shaft (56). A turbulence spiral blade (58) is welded to the outer side of the stirring rod (57). A scraping structure (59) is provided at the bottom of the shaft (53).

2. The diesel hydrorefining apparatus according to claim 1, characterized in that: The scraping structure (59) includes a scraping plate (591) bolted to the bottom of the outer side of the shaft (53), the bottom of which contacts the bottom side of the liquid storage cylinder (3).

3. A diesel hydrorefining apparatus according to claim 2, characterized in that: The scraper plate (591) has a bottom stirring rod (592) fixedly connected to the front and rear sides of its top, and the bottom stirring rod (592) has a diversion hole on its outer side.

4. A diesel hydrorefining apparatus according to claim 3, characterized in that: The front and rear sides of the top of the stirring rod (592) are both welded with scraping rods (593), and the outer side of the scraping rod (593) is in contact with the inner wall of the liquid storage cylinder (3).

5. A diesel hydrorefining apparatus according to claim 1, characterized in that: The replenishment structure (6) includes a bracket (61) welded to the rear side of the base (1). A liquid filling tank (62) is fixedly connected to the inner side of the top of the bracket (61). A liquid outlet valve (63) is connected to the bottom of the liquid filling tank (62). The liquid outlet valve (63) is electrically connected to the controller (2).

6. A diesel hydrorefining apparatus according to claim 5, characterized in that: A liquid pump (64) is provided on the rear side of the top of the liquid storage cylinder (3). The output end of the liquid pump (64) passes through the top of the liquid storage cylinder (3). The absorption end of the liquid pump (64) is connected to a suction tube (65). The top of the suction tube (65) is connected to the bottom of the liquid outlet valve (63). A liquid storage tube (66) is provided on the top side inside the liquid storage cylinder (3). The top of the liquid storage tube (66) is connected to the output end of the liquid pump (64). The bottom of the liquid storage tube (66) is connected to an atomizing nozzle (67).

7. A diesel hydrorefining apparatus according to claim 1, characterized in that: A temperature sensor (7) is provided on the left side of the liquid storage cylinder (3), and the sensing end of the temperature sensor (7) is located inside the liquid storage cylinder (3).

8. A diesel hydrorefining apparatus according to claim 5, characterized in that: The top of the liquid addition tank (62) is connected to a replenishment pipe (8), and a sealing cap (9) is provided on the top of the replenishment pipe (8).

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