Fixed bed continuous hydrogenation reaction device

Abstract

The utility model discloses a continuous hydrogenation reaction device of a fixed bed, which relates to the technical field of chemical equipment and comprises a tank body, a fixed bed structure is arranged in the middle of the inside of the tank body, and a main gas distributor is arranged in the tank body and below the fixed bed structure. The upper end of the main gas distributor is communicated and connected with a gas outlet pipe opening, the upper end of the gas outlet pipe opening is provided with a gas outlet pipe cap, an auxiliary gas distributor is arranged in the fixed bed structure, a partition plate is arranged in the auxiliary gas distributor, through holes are formed in the auxiliary gas distributor and the partition plate in a penetrating manner, and the through holes are communicated with the main gas distributor. A gas inlet pipeline is arranged at the position, corresponding to the main gas distributor and the auxiliary gas distributor, of one side of the exterior of the tank body, part of hydrogen gas is input into the fixed bed structure, the distribution effect of hydrogen in a catalyst in the fixed bed structure is more uniform, and the catalytic effect of the catalyst matched with hydrogen on raw materials is guaranteed.

Description

TECHNICAL FIELD

[0001] The utility model relates to chemical equipment technical field, concretely relates to a fixed bed continuous hydrogenation reaction device. BACKGROUND

[0002] The fixed bed continuous hydrogenation reaction device is mainly composed of a reaction tube, a heating and cooling system, a material conveying system and the like, the reaction tube is a core component and is made of a high-temperature and high-pressure resistant material, is internally filled with a catalyst and provides a place for hydrogenation reaction, the heating system ensures that the reaction is carried out at a suitable temperature, electric heating or heat medium heating is usually adopted, temperature can be accurately controlled, when the device is running, raw materials and hydrogen continuously flow into the reaction tube, hydrogenation reaction occurs under the action of the catalyst, reaction products continuously flow out, the whole process is continuous and stable, and the fixed bed continuous hydrogenation reaction device is widely applied to hydrogenation reaction processes in the fields of petroleum chemical industry, pharmacy and the like. SUMMARY

[0003] The utility model discloses a fixed bed continuous hydrogenation reaction device, to solve the problem that the traditional fixed bed reactor internal hydrogenation device is usually arranged below the fixed bed, the distribution effect of hydrogen in the catalyst inside the fixed bed is not uniform enough, and the catalytic effect of the catalyst on raw materials in cooperation with hydrogen is influenced.

[0004] To achieve the above object, the utility model provides the following technical scheme: a fixed bed continuous hydrogenation reaction device, including the jar body, the inside intermediate position of jar body is equipped with fixed bed structure, the inside of jar body and below fixed bed structure is equipped with main gas distributor, the upper end of main gas distributor is connected with the out gas pipe mouth that links to each other, the upper end of out gas pipe mouth is equipped with the out gas pipe cap, the inside of fixed bed structure is equipped with the auxiliary gas distributor, the inside of auxiliary gas distributor is equipped with the baffle, all are equipped with the through -hole that penetrates in auxiliary gas distributor and baffle, the outside one side of jar body with auxiliary gas distributor and main gas distributor corresponding position is equipped with the gas inlet pipeline.

[0005] Preferably, the upper and lower ends of the fixed bed structure are respectively provided with upper support packing and lower support packing, the lower surface of the lower support packing is provided with a support grid plate, the inner surface of the jar body is provided with a limiting ridge at the position corresponding to the support grid plate, and the lower end of the support grid plate abuts against the limiting ridge.

[0006] Preferably, the side wall of the jar body is provided with a communication pipeline at the position corresponding to the main gas distributor and the auxiliary gas distributor, and the gas inlet pipeline is in communication with the main gas distributor and the auxiliary gas distributor through the communication pipeline.

[0007] Preferably, the lower end of the other side of the tank body is provided with a waste gas exhaust pipe at the position corresponding to the air inlet pipe, the upper end of the tank body is provided with a feeding pipe at the middle position, and the lower end of the tank body is provided with a discharging pipe at the middle position.

[0008] Preferably, the main gas distributor and the auxiliary gas distributor are both hollow circular truncated cone structures.

[0009] Compared with the prior art, the beneficial effects of the utility model are as follows: on the basis of the structure of the conventional internal hydrogenation device which is usually arranged below the fixed bed reactor, the auxiliary gas distributor is arranged in the fixed bed structure, and part of the hydrogen gas is input into the fixed bed structure, so that the hydrogen gas is more uniformly distributed in the catalyst in the fixed bed, and the catalytic effect of the catalyst on the raw material with hydrogen gas is ensured. BRIEF DESCRIPTION OF DRAWINGS

[0010] Figure 1 It is the main structure of the utility model axonometric view;

[0011] Figure 2 It is the main structure of the utility model axonometric view;

[0012] Figure 3 It is the main structure of the utility model axonometric view;

[0013] Figure 4 It is the main structure of the utility model axonometric view;

[0014] Figure 5 It is the main structure of the utility model axonometric view.

[0015] In the drawing: 1-tank body, 2-fixed bed structure, 3-main gas distributor, 4-gas outlet, 5-gas outlet cap, 6-auxiliary gas distributor, 7-baffle, 8-through hole, 9-air inlet pipe, 10-upper support filler, 11-lower support filler, 12-support grid plate, 13-limiting edge, 14-communication pipe, 15-waste gas exhaust pipe, 16-feeding pipe, 17-discharging pipe. DETAILED DESCRIPTION

[0016] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all the other embodiments obtained by those skilled in the art without creative labor fall within the protection scope of the utility model.

[0017] Please refer to Figures 1-5The utility model provides a fixed bed continuous hydrogenation reaction device, including jar body 1, the inside intermediate position of jar body 1 is equipped with fixed bed structure 2, the inside of jar body 1 and below fixed bed structure 2 is equipped with main gas distributor 3, the upper end of main gas distributor 3 is connected with and is equipped with the gas outlet pipe mouth 4 of communication, the upper end of gas outlet pipe mouth 4 is equipped with gas outlet pipe cap 5, the inside of fixed bed structure 2 is equipped with auxiliary gas distributor 6, the inside of auxiliary gas distributor 6 is equipped with baffle 7, the upper end of auxiliary gas distributor 6 and baffle 7 is all equipped with the through hole 8 of opening, the outside one side of jar body 1 and the corresponding position of main gas distributor 3 and auxiliary gas distributor 6 are equipped with gas inlet pipeline 9.

[0018] When using, the fixed bed structure 2 is arranged in the inside of the jar body 1, the main gas distributor 3 is arranged below the fixed bed structure 2 in the inside of the jar body 1, and the auxiliary gas distributor 6 is arranged in the inside of the fixed bed structure 2, the external hydrogen is input into the inside of the main gas distributor 3 and the auxiliary gas distributor 6 through the gas inlet pipeline 9, the hydrogen is uniformly input into the lower end of the inside of the jar body 1 through the gas outlet pipe mouth 4 arranged on the main gas distributor 3, the gas outlet pipe cap 5 is arranged on the upper end of the gas outlet pipe mouth 4, the upper end of the gas outlet pipe mouth 4 is protected through the gas outlet pipe cap 5, the impurities in the inside of the jar body 1 are prevented from falling into the inside of the main gas distributor 3, the baffle 7 is arranged in the inside of the auxiliary gas distributor 6, and the through hole 8 is arranged on the auxiliary gas distributor 6 and the baffle 7, the hydrogen is input into the inside of the fixed bed structure 2 through the through hole 8, the baffle 7 is arranged in the inside of the auxiliary gas distributor 6, the inside of the auxiliary gas distributor 6 is protected, the material in the inside of the fixed bed structure 2 is prevented from entering the inside of the auxiliary gas distributor 6, and the uniformity of the distribution of the hydrogen in the inside of the fixed bed structure 2 is improved.

[0019] The upper support filler 10 and the lower support filler 11 are respectively arranged at the upper end and the lower end of the fixed bed structure 2, the lower surface of the lower support filler 11 is provided with a support grid plate 12, the inner surface of the jar body 1 is provided with a limiting guide 13 at the position corresponding to the support grid plate 12, and the lower end of the support grid plate 12 abuts against the limiting guide 13. By arranging the upper support filler 10 and the lower support filler 11 at the upper end and the lower end of the fixed bed structure 2, the strength of the upper end and the lower end of the fixed bed structure 2 is improved, the integrity of the fixed bed structure 2 is ensured, the support grid plate 12 is arranged at the lower end of the lower support filler 11, the whole fixed bed structure 2 is supported through the support grid plate 12, the limiting guide 13 is arranged in the inside of the jar body 1, and the support grid plate 12 is fixedly arranged in the inside of the jar body 1 by abutting the support grid plate 12 against the limiting guide 13.

[0020] The side wall of the tank body 1 is provided with a communication pipeline 14 at the position corresponding to the main gas distributor 3 and the auxiliary gas distributor 6, the gas inlet pipeline 9 is connected with the main gas distributor 3 and the auxiliary gas distributor 6 through the communication pipeline 14, the hydrogen input by the gas inlet pipeline 9 is input into the main gas distributor 3 and the auxiliary gas distributor 6 respectively through the communication pipeline 14, and the hydrogen is uniformly distributed in the tank body 1 through the main gas distributor 3 and the auxiliary gas distributor 6.

[0021] The lower end of the tank body 1 is provided with a waste gas outlet 15 at the position corresponding to the gas inlet pipeline 9, the upper end of the tank body 1 is provided with a feeding pipeline 16 at the middle position, and the lower end of the tank body 1 is provided with a discharging pipeline 17 at the middle position, the material to be catalyzed is input into the tank body 1 through the feeding pipeline 16, and the catalyzed material is output to the outside of the tank body 1 through the discharging pipeline 17.

[0022] The main gas distributor 3 and the auxiliary gas distributor 6 are both hollow circular truncated cone structures, the main gas distributor 3 and the auxiliary gas distributor 6 provided with the hollow circular truncated cone structure ensure the uniformity of the hydrogen distribution.

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

Claims

1. A fixed bed continuous hydrogenation reaction device, characterized in that: The invention comprises a tank body (1), wherein a fixed bed structure (2) is provided at the middle position inside the tank body (1), a main gas distributor (3) is provided inside the tank body (1) and below the fixed bed structure (2), an upper end of the main gas distributor (3) is connected to a gas outlet pipe (4), an upper end of the gas outlet pipe (4) is provided with a gas outlet pipe cap (5), an auxiliary gas distributor (6) is provided inside the fixed bed structure (2), a partition (7) is provided inside the auxiliary gas distributor (6), and through holes (8) are provided on both the auxiliary gas distributor (6) and the partition (7), and an air inlet pipe (9) is provided on one side of the outside of the tank body (1) at positions corresponding to the main gas distributor (3) and the auxiliary gas distributor (6).

2. A fixed bed continuous hydrogenation reaction device according to claim 1, characterized in that: An upper supporting filler (10) and a lower supporting filler (11) are respectively provided at the upper and lower ends of the fixed bed structure (2); a supporting grid plate (12) is provided on the lower surface of the lower supporting filler (11); a limiting edge (13) is provided on the inner surface of the tank body (1) at a position corresponding to the supporting grid plate (12); and the lower end of the supporting grid plate (12) abuts against the limiting edge (13).

3. A fixed bed continuous hydrogenation reaction device according to claim 1, characterized in that: A communication pipe (14) is provided through the side wall of the tank body (1) at positions corresponding to the main gas distributor (3) and the auxiliary gas distributor (6); the air inlet pipe (9) is connected to the main gas distributor (3) and the auxiliary gas distributor (6) through the communication pipe (14).

4. A fixed bed continuous hydrogenation reaction device according to claim 1, characterized in that: An exhaust gas discharge pipe opening (15) is provided at a position corresponding to the air intake pipe (9) on the other side of the lower end of the tank body (1), a feed pipe opening (16) is provided through the middle position of the upper end of the tank body (1), and a discharge pipe opening (17) is provided through the middle position of the lower end of the tank body (1).

5. The fixed bed continuous hydrogenation reaction device according to claim 1, characterized in that: The main gas distributor (3) and the auxiliary gas distributor (6) are both hollow frustum structures.

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