A kind of ethylene glycol liquid phase hydrogenation reactor

Abstract

The utility model discloses an ethylene glycol liquid phase hydrogenation reactor, including a reactor tower, a fixed rod is fixedly installed in the middle of the interior of the reactor tower, a lifting barrel is installed inside the fixed rod, a dispersion plate is fixedly installed above the lifting barrel, a dispersion discharge hole is opened inside, a protection box is installed above the dispersion plate, a lifting motor is installed inside the protection box, and a spiral conveying blade is installed at the output end of the lifting motor; a catalyst support beam is installed below the fixed rod, and four connecting rods are fixedly installed below the catalyst support beam. The ethylene glycol liquid phase hydrogenation reactor is provided with a lifting motor to drive the spiral conveying blade to rotate in the lifting barrel, so that the catalyst is transported to the dispersion plate, dispersed along the dispersion plate, and falls through the dispersion discharge hole, so that the catalyst falls together with the gas and liquid, so as to better make the catalyst contact and react with the gas and liquid, and improve the catalytic efficiency.

Description

Technical Field

[0001] The utility model relates to the technical field of hydrogenation reactors, in particular to an ethylene glycol liquid phase hydrogenation reactor. Background Art

[0002] A hydrogenation reactor is a common chemical equipment, mainly used in the hydrogenation reaction process, where raw materials and hydrogen are reacted in the presence of a catalyst to convert the raw materials into target products through a series of chemical reactions; hydrogenation reactors are widely used in petrochemical, chemical engineering, energy and environment and other fields; hydrogenation reaction refers to the reaction of raw materials with hydrogen under high temperature and high pressure conditions, where impurity elements such as oxygen, sulfur and nitrogen in the raw material molecules are removed through the action of a catalyst to convert them into purer compounds; common catalysts include nickel, molybdenum, platinum and the like.

[0003] China Authorization Announcement No. CN218784801U discloses an ethylene glycol liquid phase hydrogenation reactor, comprising a reaction tower, a water separation layer is arranged inside the reaction tower, a direct current channel for raw materials to circulate is arranged outside the water separation layer, a guide layer is arranged inside the water separation layer, the guide layer has an inclination angle arranged toward the direct current channel, a drainage component for limiting the flow direction of the raw materials is arranged outside the water separation layer, and the drainage component is vertically corresponding to the opening at the top of the reaction tower. The utility model drains the ethylene glycol liquid through the water separation layer, the water storage tank, the guide holes and the guide line groove, in conjunction with the inclined mesh plate and the water outlet hole, so that the ethylene glycol liquid can overflow from the gap of the water separation layer after filling the water storage tank, thereby achieving a large-area diffusion effect. At the same time, the ethylene glycol liquid remaining in the water storage tank can be discharged through the guide holes and the guide line groove under the drainage of the inclined mesh plate, thereby avoiding raw material residue.

[0004] The catalyst in the existing ethylene glycol liquid phase hydrogenation reactor is placed on a catalyst support beam and the catalysts are piled up, which causes the catalyst to not react well with the gas and liquid, affecting the reaction efficiency. Therefore, we propose an ethylene glycol liquid phase hydrogenation reactor. Utility Model Content

[0005] The utility model aims to provide an ethylene glycol liquid phase hydrogenation reactor to solve the problem in the above-mentioned background technology that the catalyst in the existing ethylene glycol liquid phase hydrogenation reactor is placed on a catalyst support beam and the catalyst is piled up, resulting in the catalyst not being able to react well with the gas and liquid, thereby affecting the reaction efficiency.

[0006] To achieve the above object, the utility model provides the following technical solution: an ethylene glycol liquid phase hydrogenation reactor, comprising a reactor tower, a fixed rod is fixedly installed in the middle of the interior of the reactor tower, a lifting cylinder is installed inside the fixed rod, a dispersion plate is fixedly installed above the lifting cylinder, a dispersion discharge hole is opened inside the dispersion plate, a protection box is installed above the dispersion plate, a lifting motor is installed inside the protection box, and a spiral conveying blade is installed at the output end of the lifting motor;

[0007] A catalyst support beam is installed below the fixed rod, four connecting rods are fixedly installed below the catalyst support beam, a material discharge barrel is fixedly installed below the connecting rods, an electric control valve is installed below the material discharge barrel, and a mesh is installed between adjacent connecting rods.

[0008] Preferably, the dispersion plate is in a funnel-shaped structure, and the dispersion discharge holes penetrate the interior of the dispersion plate, and the dispersion discharge holes are evenly distributed along the interior of the dispersion plate.

[0009] Preferably, the spiral conveying blades sequentially penetrate the interior of the lifting barrel and the lowering barrel, and the spiral conveying blades are rotated inside the lifting barrel and the lowering barrel by a lifting motor.

[0010] Preferably, the gauze is fixedly connected to the catalyst support beam, the connecting rod and the discharge barrel respectively, and the catalyst support beam is a ring-shaped structure, and the catalyst support beam, the gauze and the connecting rod form a funnel-shaped structure.

[0011] Preferably, the reactor tower is further provided with:

[0012] A distributor is installed above the interior of the reactor tower. A feed inlet is arranged above the inner wall of the reactor tower, and an outlet is arranged below the inner wall of the reactor tower.

[0013] Preferably, the lower barrel is further provided with:

[0014] A cold hydrogen tray is installed outside the lower barrel.

[0015] Compared with the prior art, the utility model provides an ethylene glycol liquid phase hydrogenation reactor, which has the following beneficial effects: the ethylene glycol liquid phase hydrogenation reactor is provided with a material lifting motor to drive the spiral conveying blade to rotate in the material lifting cylinder, so as to convey the catalyst to the dispersion plate, disperse it along the dispersion plate, and fall through the dispersion discharge hole, so that the catalyst falls together with the gas and liquid, so as to better make the catalyst contact and react with the gas and liquid, thereby improving the catalytic efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0017] Figure 2 This is a schematic diagram of the structure of the dispersion plate of the utility model;

[0018] Figure 3 This is a schematic diagram of the catalyst support beam structure of the utility model.

[0019] In the figure: 1. Reactor tower; 2. Distributor; 3. Lifting motor; 4. Dispersion plate; 5. Lifting barrel; 6. Catalyst support beam; 7. Gauze; 8. Discharge barrel; 9. Outlet; 10. Electric control valve; 11. Cold hydrogen plate; 12. Spiral conveying blade; 13. Fixed rod; 14. Protective box; 15. Feed inlet; 16. Dispersion discharge hole; 17. Connecting rod. DETAILED DESCRIPTION

[0020] The following will be combined with the drawings in the embodiments of the utility model 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 in 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.

[0021] See also Figure 1-3A glycol liquid phase hydrogenation reactor comprises a reactor tower 1, a fixed rod 13 is fixedly installed in the middle of the interior of the reactor tower 1, a lifting barrel 5 is installed inside the fixed rod 13, a dispersion plate 4 is fixedly installed above the lifting barrel 5, and a dispersion discharge hole 16 is opened inside the dispersion plate 4; the dispersion plate 4 is a funnel-shaped structure, and the dispersion discharge holes 16 pass through the interior of the dispersion plate 4, and the dispersion discharge holes 16 are evenly distributed along the interior of the dispersion plate 4, a protection box 14 is installed above the dispersion plate 4, a lifting motor 3 is installed inside the protection box 14, and a spiral conveying blade 12 is installed at the output end of the lifting motor 3; a catalyst support beam 6 is installed below the fixed rod 13, four connecting rods 17 are fixedly installed below the catalyst support beam 6, and a discharge barrel 8 is fixedly installed below the connecting rod 17; the spiral conveying blade 12 passes through the interior of the lifting barrel 5 and the discharge barrel 8 in sequence, and the spiral conveying blade 12 passes through the lifting motor 3 realizes rotation inside the material raising barrel 5 and the material lowering barrel 8, an electric control valve 10 is installed below the material lowering barrel 8, and a gauze 7 is installed between adjacent connecting rods 17; the gauze 7 is fixedly connected to the catalyst support beam 6, the connecting rod 17 and the material lowering barrel 8 respectively, and the catalyst support beam 6 is a ring-shaped structure, and the catalyst support beam 6, the gauze 7 and the connecting rod 17 form a funnel-shaped structure; by setting a material raising motor 3 to drive the spiral conveying blade 12 to rotate in the material raising barrel 5, the catalyst is conveyed to the dispersion plate 4, dispersed along the dispersion plate 4, and falls through the dispersion discharge hole 16, so that the catalyst falls together with the gas and liquid, so as to better make the catalyst contact and react with the gas and liquid, and improve the catalytic efficiency; the distributor 2 is installed above the inside of the reactor tower 1, the upper part of the inner wall of the reactor tower 1 is provided with a feed inlet 15, and the lower part of the inner wall of the reactor tower 1 is provided with an outlet 9; the cold hydrogen plate 11 is installed outside the material lowering barrel 8.

[0022] Working principle: When using the ethylene glycol liquid phase hydrogenation reactor, first, the lifting motor 3 inside the protective box 14 is powered on to drive the spiral conveying blade 12 to rotate inside the lifting barrel 5 and the discharge barrel 8, and the catalyst on the gauze 7 is transported to the dispersion plate 4. The catalyst is dispersed along the dispersion plate 4 and rolls downward, and falls from the dispersion discharge hole 16. The gauze 7 allows gas and liquid to pass through, but not the catalyst. Then the gas and liquid are injected into the reactor tower 1 from the feed inlet 15, and are distributed and dropped through the distributor 2. When the gas and liquid pass through the dispersion discharge hole 16, they will fully contact and react with the catalyst dropped from the dispersion discharge hole 16. Finally, when replacing the catalyst, the electric control valve 10 is opened, and at the same time, the lifting motor 3 drives the spiral conveying blade 12 to rotate in the opposite direction to discharge the catalyst. This is the working principle of the ethylene glycol liquid phase hydrogenation reactor.

[0023] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An ethylene glycol liquid phase hydrogenation reactor, characterized in that: include: A reactor tower (1), wherein a fixing rod (13) is fixedly installed in the middle of the interior of the reactor tower (1), a lifting cylinder (5) is installed inside the fixing rod (13), a dispersion plate (4) is fixedly installed above the lifting cylinder (5), a dispersion discharge hole (16) is opened inside the dispersion plate (4), a protection box (14) is installed above the dispersion plate (4), a lifting motor (3) is installed inside the protection box (14), and a spiral conveying blade (12) is installed at the output end of the lifting motor (3); A catalyst support beam (6) is installed below the fixed rod (13), four connecting rods (17) are fixedly installed below the catalyst support beam (6), a discharge barrel (8) is fixedly installed below the connecting rods (17), an electric control valve (10) is installed below the discharge barrel (8), and a mesh (7) is installed between adjacent connecting rods (17).

2. An ethylene glycol liquid phase hydrogenation reactor according to claim 1, characterized in that: The dispersion plate (4) is of a funnel-shaped structure, and the dispersion discharge holes (16) penetrate the interior of the dispersion plate (4), and the dispersion discharge holes (16) are evenly distributed along the interior of the dispersion plate (4).

3. An ethylene glycol liquid phase hydrogenation reactor according to claim 1, characterized in that: The spiral conveying blade (12) passes through the interior of the lifting barrel (5) and the lowering barrel (8) in sequence, and the spiral conveying blade (12) is rotated inside the lifting barrel (5) and the lowering barrel (8) by the lifting motor (3).

4. The ethylene glycol liquid phase hydrogenation reactor according to claim 1, characterized in that: The gauze (7) is fixedly connected to the catalyst support beam (6), the connecting rod (17) and the discharge barrel (8) respectively, and the catalyst support beam (6) is a ring-shaped structure, and the catalyst support beam (6), the gauze (7) and the connecting rod (17) form a funnel-shaped structure.

5. The ethylene glycol liquid phase hydrogenation reactor according to claim 1, characterized in that: The reactor tower (1) is also provided with: A distributor (2) is installed above the interior of the reactor tower (1); an inlet (15) is provided above the inner wall of the reactor tower (1); and an outlet (9) is provided below the inner wall of the reactor tower (1).

6. The ethylene glycol liquid phase hydrogenation reactor according to claim 1, characterized in that: The lower barrel (8) is also provided with: A cold hydrogen plate (11) is installed outside the lower barrel (8).

Images