A well-mixed hydrogenation reactor

Abstract

The utility model relates to hydrogenation reactor technical field, specifically disclose a kind of hydrogenation reactor of sufficient contact, including tank body and the pressure oil pipe of fixed connection in tank body upper side being penetrated, the outer wall of pressure oil pipe is connected with the first hydrogenation pipe located in the outside of tank body, and the inside and outside between tank body is provided with mixing mechanism, and mixing mechanism includes hollow disc fixedly connected in the inside of tank body and with pressure oil pipe communication, and the lower portion of hollow disc is provided with box;Gas-liquid mixture enters hollow disc, under the drive of driving mechanism, the stirring vane on rotating shaft carries out forced mechanical stirring to mixture, makes hydrogen and oil liquid realize the sufficient contact and mixing of first stage, hydrogen enters hollow platform and is evenly dispersed through gas outlet after second hydrogenation pipe, and oil drop after the atomization of spray head is fully contacted with the hydrogen dispersed by gas outlet, realizes the secondary dispersion and mixing of gas-liquid two-phase, effectively increases two-phase contact area, to significantly improve the mixing reaction effect.

Description

Technical Field

[0001] This utility model relates to the field of hydrogenation reactor technology, and specifically discloses a hydrogenation reactor with sufficient contact. Background Technology

[0002] Hydrotreating reactors are core equipment in the petroleum refining and chemical industries, widely used in processes such as hydrocracking and hydrorefining. They react hydrogen with impurities such as sulfur, nitrogen, and oxygen, or unsaturated hydrocarbons, in feedstock oils (e.g., heavy oil, residue oil), producing clean, high-value light oil products. The degree of contact between hydrogen and feedstock oil directly determines reaction efficiency, product yield, and catalyst lifespan, making it a key factor influencing the overall technical and economic performance of the unit.

[0003] In existing technologies, conventional devices typically introduce hydrogen and feedstock oil into the reaction vessel separately, relying mainly on the fluid's own flow characteristics and limited internal structure to achieve mixing. They lack effective forced mixing methods. Specifically, firstly, inside the reactor, the existing structure cannot apply continuous mechanical stirring to the gas and liquid phases, resulting in insufficient contact. Secondly, the oil phase and hydrogen themselves lack the specialized structures for dispersion and refinement, making it impossible to form fine droplets that increase the contact area.

[0004] Therefore, a hydrogenation reactor with sufficient contact is needed to solve the above problems. Utility Model Content

[0005] This invention proposes a hydrogenation reactor with sufficient contact, which initially mixes hydrogen and feedstock oil and applies forced mechanical stirring to achieve sufficient contact between the gas and liquid phases; at the same time, the above-mentioned dispersion and refinement structure further refines the oil phase and hydrogen, effectively increasing the contact area between the two phases, thereby improving the mixing reaction effect.

[0006] This invention is achieved as follows: a hydrogenation reactor with sufficient contact includes a tank and a pressure oil supply pipe that is fixedly connected to the upper side of the tank. The outer wall of the pressure oil supply pipe is connected to a first hydrogenation pipe located outside the tank. A mixing mechanism is provided between the inside and outside of the tank. The mixing mechanism includes a hollow disc fixedly connected to the inside of the tank and connected to a pressure oil pipeline. A box is provided below the hollow disc. A rotating shaft is rotatably connected to the upper end of the box. The rotating shaft extends into the inside of the hollow disc and is rotatably connected to the hollow disc through a sealed bearing. Multiple stirring blades located inside the hollow disc are installed on the outer wall of the rotating shaft. The mixing mechanism also includes a driving mechanism. A dispersed reaction mechanism is provided between the inside and outside of the tank. The dispersed reaction mechanism includes multiple nozzles connected to the lower end of the hollow disc. The inside of the tank is provided with a hollow platform with a conical structure. Multiple gas outlets are connected to the outer wall of the hollow platform. The lower end of the hollow platform is connected to a second hydrogenation pipe extending to the outside of the tank.

[0007] As a preferred embodiment of the present invention for a hydrogenation reactor with sufficient contact, the driving mechanism includes a driven bevel gear fixedly connected to the lower end of the rotating shaft and extending into the interior of the tank, an active bevel gear rotatably connected to the inner wall of the tank and meshing with the driven bevel gear, a drive motor being provided outside the tank, and a transmission shaft being fixedly connected between the output end of the drive motor and the active bevel gear.

[0008] As a preferred embodiment of the present invention for a hydrogenation reactor with sufficient contact, a plurality of support rods are fixedly connected between the outer wall of the hollow platform and the inner wall of the tank, and the box body is fixedly connected to the upper end of the hollow platform.

[0009] As a preferred embodiment of the present invention, the hydrogenation reactor with sufficient contact is provided with an exhaust pipe connected to the outer wall of the tank, which is equipped with a pressure relief valve.

[0010] As a preferred embodiment of the present invention, a hydrogenation reactor with sufficient contact is provided with an oil outlet pipe connected to the bottom side of the tank.

[0011] As a preferred embodiment of the present invention, a hydrogenation reactor with sufficient contact is provided, wherein a support plate is fixedly connected to the outer wall of the tank, and the drive motor is mounted on the upper end of the support plate.

[0012] The beneficial effects of this utility model are: 1. The feedstock oil enters the unit through a pressure pipeline and is initially premixed with hydrogen injected through the first hydrogenation pipeline. Subsequently, the gas-liquid mixture enters a hollow disc, where the stirring blades on the rotating shaft are driven by the drive mechanism to mechanically stir the mixture, ensuring that the hydrogen and oil achieve sufficient contact and mixing in the first stage.

[0013] 2. The pre-mixed materials are sprayed downwards through the nozzle to form fine oil droplets, while hydrogen enters the hollow platform through the second hydrogenation pipe and is evenly dispersed through the gas outlet. The fined oil droplets from the nozzle and the hydrogen dispersed through the gas outlet come into full contact, achieving secondary dispersion and mixing of the gas and liquid phases, effectively increasing the contact area between the two phases, and thus significantly improving the mixing reaction effect. Attached Figure Description

[0014] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. In all the drawings, similar elements or parts are generally identified by similar reference numerals. In the drawings, the elements or parts are not necessarily drawn to scale.

[0015] Figure 1 This is a front cross-sectional view of the hydrogenation reactor with sufficient contact according to the present invention; Figure 2 For the present utility model Figure 1 Enlarged view of point A in the middle; Figure 3 This is a structural diagram of the hollow disc and nozzle of this utility model; Figure 4 This is a structural diagram of the hollow platform and air outlet of this utility model.

[0016] The markings in the diagram are: 1. Tank body; 2. Pressure oil delivery pipe; 3. First hydrogenation pipe; 4. Hollow disc; 5. Nozzle; 6. Housing; 7. Sealed bearing; 8. Rotary shaft; 9. Stirring blade; 10. Driven bevel gear; 11. Driving bevel gear; 12. Transmission shaft; 13. Support plate; 14. Drive motor; 15. Hollow platform; 16. Gas outlet; 17. Second hydrogenation pipe; 18. Exhaust pipe; 19. Oil outlet pipe; 20. Support rod. Detailed Implementation

[0017] The present invention will be further described below with reference to the accompanying drawings and specific embodiments to aid in understanding its content. Unless otherwise specified, the methods used in this invention are conventional methods; the raw materials and apparatus used, unless otherwise specified, are conventional commercially available products.

[0018] Please see Figure 1-4 A hydrogenation reactor with sufficient contact includes a tank 1 and a pressure oil supply pipe 2 that is fixedly connected to the upper side of the tank 1. The outer wall of the pressure oil supply pipe 2 is connected to a first hydrogenation pipe 3 located outside the tank 1. A mixing mechanism is provided between the inside and outside of the tank body 1. The mixing mechanism includes a hollow disc 4 fixedly connected to the inside of the tank body 1 and connected to the pressure oil pipeline 2. A box body 6 is provided below the hollow disc 4. A rotating shaft 8 is rotatably connected to the upper end of the box body 6. The rotating shaft 8 extends into the inside of the hollow disc 4 and is rotatably connected to the hollow disc 4 through a sealed bearing 7. Multiple stirring blades 9 located inside the hollow disc 4 are installed on the outer wall of the rotating shaft 8. The mixing mechanism also includes a drive mechanism. A dispersed reaction mechanism is provided between the inside and outside of the tank body 1. The dispersed reaction mechanism includes multiple nozzles 5 connected to the lower end of the hollow disc 4. The inside of the tank body 1 is provided with a hollow platform 15 with a conical structure. Multiple gas outlets 16 are connected to the outer wall of the hollow platform 15. The lower end of the hollow platform 15 is connected to a second hydrogenation pipe 17 extending to the outside of the tank body 1.

[0019] In this embodiment: During operation, the feedstock oil enters the device through the pressure oil pipe 2 on the upper side of the tank 1. Simultaneously, hydrogen is injected into the oil pipeline through the first hydrogenation pipe 3, achieving preliminary premixing of hydrogen and feedstock oil. The premixed gas-liquid mixture then enters the hollow disc 4. At this time, the drive mechanism drives the rotating shaft 8 to rotate, and multiple stirring blades 9 installed on the outer wall of the rotating shaft 8 and located inside the hollow disc 4 rotate accordingly, applying a forced mechanical stirring action to the gas-liquid mixture inside the hollow disc 4, so that the hydrogen and oil achieve sufficient contact and mixing in the first stage.

[0020] During mixing, the gas-liquid mixture inside the hollow disk 4 is sprayed downwards through multiple nozzles 5. The nozzles 5 disperse and refine the oil phase into fine droplets, significantly increasing the surface area. At the same time, hydrogen enters the hollow platform 15 through the second hydrogenation pipe 17 and flows out evenly through multiple gas outlets 16. The gas outlets 16 disperse the hydrogen, and the generated hydrogen comes into full contact with the refined oil droplets sprayed from the nozzles 5 above, achieving secondary dispersion and mixing of the gas and liquid phases. Furthermore, the above-mentioned dispersion and refinement structure further refines the oil phase and hydrogen, effectively increasing the contact area between the two phases, thereby improving the mixing reaction effect.

[0021] As a technical optimization of this utility model, the drive mechanism includes a driven bevel gear 10 fixedly connected to the lower end of the rotating shaft 8 and extending into the inside of the housing 6. The inner wall of the housing 6 is rotatably connected to an active bevel gear 11 that meshes with the driven bevel gear 10. A drive motor 14 is provided on the outside of the tank 1. A transmission shaft 12 is fixedly connected between the output end of the drive motor 14 and the active bevel gear 11.

[0022] In this embodiment: the drive motor 14 drives the active bevel gear 11 to rotate through the transmission shaft 12. The active bevel gear 11 meshes with the driven bevel gear 10 to drive the rotating shaft 8 to rotate.

[0023] As a technical optimization of this utility model, a plurality of support rods 20 are fixedly connected between the outer wall of the hollow platform 15 and the inner wall of the tank 1, and the box 6 is fixedly connected to the upper end of the hollow platform 15.

[0024] In this embodiment: the hollow platform 15 is fixedly connected to the inner wall of the tank 1 by multiple support rods 20 to ensure the stability of the conical hollow platform 15. The box 6 is fixedly installed on the upper end of the hollow platform 15, thereby improving the stability of the box 6.

[0025] As a technical optimization of this utility model, the outer wall of the tank 1 is connected to an exhaust pipe 18 with a pressure relief valve.

[0026] In this embodiment, the exhaust pipe 18 connected to the outer wall of the tank 1 is equipped with a pressure relief valve. When the pressure inside the reactor exceeds the set threshold, the pressure relief valve automatically opens to safely discharge excess hydrogen through the exhaust pipe 18.

[0027] As a technical optimization of this utility model, the bottom side of the tank body 1 is connected to an oil outlet pipe 19.

[0028] In this embodiment: the oil phase product after the reaction is completed accumulates at the bottom of the tank 1 and is continuously discharged through the oil outlet pipe 19 connected to the bottom side of the tank 1.

[0029] As a technical optimization of this utility model, a support plate 13 is fixedly connected to the outer wall of the tank body 1, and a drive motor 14 is installed on the upper end of the support plate 13.

[0030] In this embodiment: the support plate 13 is fixedly connected to the outer wall of the tank 1, providing an installation base for the drive motor 14.

[0031] The working principle and usage process of this utility model are as follows: During operation, the raw oil enters the device through the pressure oil supply pipe 2 on the upper side of the tank 1. At the same time, hydrogen is injected into the oil supply pipeline through the first hydrogenation pipe 3, achieving preliminary pre-mixing of hydrogen and raw oil. The pre-mixed gas-liquid mixture then enters the hollow disc 4. At this time, the drive motor 14 provides power, and the output end of the drive motor 14 drives the active bevel gear 11 to rotate through the transmission shaft 12. The active bevel gear 11 meshes with the driven bevel gear 10 fixedly connected to the lower end of the rotating shaft 8, thereby driving the rotating shaft 8 to rotate. Multiple stirring blades 9 installed on the outer wall of the rotating shaft 8 and located inside the hollow disc 4 rotate accordingly, applying a forced mechanical stirring action to the gas-liquid mixture inside the hollow disc 4, so that the hydrogen and oil achieve full contact and mixing in the first stage.

[0032] During mixing, the gas-liquid mixture inside the hollow disk 4 is sprayed downwards through multiple nozzles 5. The nozzles 5 disperse and refine the oil phase into fine droplets, significantly increasing the surface area. At the same time, hydrogen enters the hollow platform 15 through the second hydrogenation pipe 17 and flows out evenly through multiple gas outlets 16. The gas outlets 16 disperse the hydrogen, and the generated hydrogen comes into full contact with the refined oil droplets sprayed from the nozzles 5 above, achieving secondary dispersion and mixing of the gas and liquid phases. Furthermore, the above-mentioned dispersion and refinement structure further refines the oil phase and hydrogen, effectively increasing the contact area between the two phases, thereby improving the mixing reaction effect.

[0033] In the description of this utility model, it should be understood that the terms "left", "right", "up", "down", "top", "bottom", "front", "back", "inner", "outer", "back", "middle", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0034] However, the above description is only a specific embodiment of this utility model and should not be construed as limiting the scope of implementation of this utility model. Therefore, any substitution of equivalent components or equivalent changes and modifications made in accordance with the scope of protection of this utility model should still fall within the scope of the claims of this utility model.

Claims

1. A hydrogenation reactor with sufficient contact, comprising a tank (1) and a pressure oil pipeline (2) that penetrates and is fixedly connected to the upper side of the tank (1), characterized in that: The outer wall of the pressure oil pipeline (2) is connected to a first hydrogenation pipeline (3) located outside the tank body (1); A mixing mechanism is provided between the inside and outside of the tank (1). The mixing mechanism includes a hollow disc (4) fixedly connected to the inside of the tank (1) and connected to the pressure oil pipeline (2). A box (6) is provided below the hollow disc (4). A rotating shaft (8) is rotatably connected to the upper end of the box (6). The rotating shaft (8) extends into the hollow disc (4) and is rotatably connected to the hollow disc (4) through a sealed bearing (7). Multiple stirring blades (9) located inside the hollow disc (4) are installed on the outer wall of the rotating shaft (8). The mixing mechanism also includes a driving mechanism. A dispersed reaction mechanism is provided between the inside and outside of the tank (1). The dispersed reaction mechanism includes multiple nozzles (5) connected to the lower end of the hollow disc (4). A hollow platform (15) with a conical structure is provided inside the tank (1). Multiple gas outlets (16) are connected to the outer wall of the hollow platform (15). A second hydrogenation pipe (17) extending to the outside of the tank (1) is connected to the lower end of the hollow platform (15).

2. The hydrogenation reactor with sufficient contact according to claim 1, characterized in that: The drive mechanism includes a driven bevel gear (10) fixedly connected to the lower end of the rotating shaft (8) and extending into the inside of the housing (6). The inner wall of the housing (6) is rotatably connected to an active bevel gear (11) that meshes with the driven bevel gear (10). A drive motor (14) is provided on the outside of the tank (1). A transmission shaft (12) is fixedly connected between the output end of the drive motor (14) and the active bevel gear (11).

3. A hydrogenation reactor with sufficient contact according to claim 1, characterized in that: Multiple support rods (20) are fixedly connected between the outer wall of the hollow platform (15) and the inner wall of the tank (1), and the box (6) is fixedly connected to the upper end of the hollow platform (15).

4. A hydrogenation reactor with sufficient contact according to claim 1, characterized in that: The outer wall of the tank (1) is connected to an exhaust pipe (18) with a pressure relief valve.

5. A hydrogenation reactor with sufficient contact according to claim 1, characterized in that: The bottom side of the tank (1) is connected to an oil outlet pipe (19).

6. A hydrogenation reactor with sufficient contact according to claim 2, characterized in that: The outer wall of the tank (1) is fixedly connected to a support plate (13), and the drive motor (14) is installed on the upper end of the support plate (13).

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