Catalyst basket fixing member and fixed bed reactor

Abstract

The utility model discloses a catalyst basket fixing component and a fixed bed reactor, and relates to the technical field of catalytic devices. The problems that in the positioning and fixing process of a catalyst lifting basket in the prior art, an inner component shifts, and a sealing ring is damaged are solved. The supporting seat comprises a supporting seat body, and a side plate used for being placed on a catalyst lifting basket is arranged at the end of the supporting seat body. Open holes are formed in the centers of the side plates respectively, a screw rod is inserted into each open hole, and a nut used for being matched with the screw rod to conduct stroke adjustment is welded to the outer side of each open hole. A locking nut is arranged in each screw rod, and the adjusted screw rods are positioned through the locking nuts. The catalyst basket fixing component mainly adopts an adjustable torque device, transmits torque through the adjusting screw rod, can realize quick positioning, is firm and reliable in positioning and high in centering precision, fully integrates the catalyst basket in a fixed bed reactor, and becomes a powerful guarantee for stable reaction.

Description

Technical Field

[0001] The utility model relates to the technical field of catalytic devices, in particular to a catalyst basket fixing component and a fixed bed reactor. Background Art

[0002] With the depletion of fossil energy and the increasingly harsh environment, people are looking for alternative green energy. Hydrogen is green and pollution-free, and has a wide range of sources, but there are still problems with hydrogen storage and transportation. Organic liquid is a hydrogen storage carrier that is liquid at room temperature and pressure, similar to gasoline, and can be directly transported and stored using existing infrastructure. Organic liquids become organic liquid hydrides after hydrogenation. Organic liquid hydrides need to be in good and sufficient contact with the catalyst during dehydrogenation. Whether the catalyst can fully release its activity will affect the effect of hydrogenation and dehydrogenation. Therefore, the reactor model of organic liquid hydrogen storage is crucial.

[0003] Since the catalyst for organic liquid hydrogen storage is generally in the form of tiny particles or powder, conventional fixed bed reactors are difficult to meet the requirements of long-cycle catalyst life tests. Usually, the powdered catalyst is loaded into an independent basket and placed inside the reactor, and the catalyst basket is fixed by the basket's own gravity and a sealing ring. The reaction generally uses bottom feeding, and the catalyst is flooded by overflow to achieve good contact and reaction effects, so as to prevent local reactions and reduce reaction efficiency.

[0004] However, due to the small gap for the powder catalyst to pass through, an upward impact force will be caused to the internal basket. The friction between the basket and the sealing pad inside the reactor is not enough to overcome this impact force, and the internal catalyst basket will be pushed to the top of the overflow port. Internal components often shift, resulting in damage to the sealing ring, etc., causing the reaction fluid to be discharged directly from the reactor without passing through the catalyst bed, and the reaction cannot continue. Once this happens, the process must be stopped to avoid causing more serious consequences. For example, application number 201820643578.2 discloses an expandable catalyst characterization platform structure, in which the catalyst basket is quickly fixed to the reactor using a sealing pad and a fixing pin, and can still maintain good sealing at high temperatures. However, there will also be problems such as displacement of internal components and damage to the sealing ring.

[0005] This shows that the above-mentioned prior art is in urgent need of further improvement. Utility Model Content

[0006] In order to solve the technical problems existing in the above-mentioned prior art, one of the purposes of the utility model is to provide a catalyst basket fixing component, which can fix the catalyst basket to avoid displacement of internal components and enable the reaction to proceed smoothly.

[0007] In order to solve the above technical problems, the utility model adopts the following technical solutions:

[0008] A catalyst basket fixing member is installed above the catalyst basket, comprising a support seat body and an adjusting and fastening component, wherein the support seat body is cross-connected by at least two support rods, and side plates for being placed on the catalyst basket are arranged at the ends of the at least two support rods;

[0009] The adjusting and fastening components include a screw, a nut and a locking nut. Openings are respectively provided at the center of the side plates. The screw is inserted into each opening. A nut for adjusting the stroke in cooperation with the screw is welded on the outside of each opening.

[0010] The locking nut is arranged inside each screw rod, and the adjusted screw rod is positioned by the locking nut.

[0011] As a preferred solution of the utility model, the support seat body is cross-connected by a first support rod and a second support rod in a "cross shape".

[0012] As another preferred solution of the utility model, the four nuts are coaxially welded to the outer sides of the corresponding openings, and the side plates are arranged in pairs.

[0013] Further preferably, the first support rod and the second support rod are made of stainless steel corrosion-resistant material, and the screw rod is a stainless steel hexagonal screw rod.

[0014] Another object of the utility model is to provide a fixed bed reactor, which can make the reaction proceed smoothly by fixing the catalyst basket by a catalyst basket fixing component.

[0015] A fixed bed reactor comprises a reactor cylinder, a catalyst basket is installed inside the reactor cylinder, and the above-mentioned catalyst basket fixing component is installed above the catalyst basket.

[0016] In the above-mentioned fixed bed reactor, a basket support seat is welded on the side part of the inner wall of the reactor cylinder, the catalyst basket is placed in the basket support seat, a basket cover is arranged on the top of the catalyst basket, and the catalyst basket fixing member is installed on the flange of the basket cover.

[0017] In the above-mentioned fixed bed reactor, a sealing ring is arranged on the side of the catalyst basket, and when the catalyst is loaded, the basket cover can compress the sealing ring.

[0018] In the above-mentioned fixed bed reactor, the top of the reactor cylinder is provided with a product gas outlet, the bottom is provided with a material inlet, and the upper side is provided with a liquid medium outlet.

[0019] In the above-mentioned fixed bed reactor, filters are arranged on the upper and lower parts of the catalyst basket.

[0020] In the above-mentioned fixed bed reactor, a handle is provided on the top of the catalyst basket.

[0021] Compared with the prior art, the utility model brings the following beneficial technical effects:

[0022] (1) The utility model proposes a catalyst basket fixing component, which fixes the entire catalyst basket fixing component to the upper part of the catalyst basket through the cooperation between the screw rod, the nut, the locking nut and the support seat. The size of the positioning torque can be adjusted by adjusting the screw rod to meet the needs of different working conditions and improve the comprehensive utilization rate of the reactor.

[0023] (2) The fixing component has a simple structure, strong practicality, convenient processing, and high adjustability, and can be generally used in scenarios where there are positioning requirements inside a tubular reactor.

[0024] (3) Optimize the internal structure of the reactor to improve and stabilize the efficiency of the catalytic reaction in the reactor.

[0025] (4) The fixed bed reactor proposed in the present invention can better ensure the smooth progress of the reaction by adopting the above-mentioned catalyst basket fixing component. The reactor can be suitable for research on different catalyst forms to achieve the best state of optimizing the use function of the reactor. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] The utility model is further described below in conjunction with the accompanying drawings:

[0027] Figure 1 This is a structural schematic diagram of the catalyst basket fixing component of the utility model;

[0028] Figure 2 This is a schematic diagram of the installation of the catalyst basket fixing component of the utility model;

[0029] Figure 3 This is an exploded schematic diagram of the catalyst basket fixing component of the utility model;

[0030] Figure 4 This is a schematic diagram of the application of the catalyst basket fixing component of the utility model in a fixed bed reactor;

[0031] In the figure:

[0032] 1. Support seat body, 2. Screw, 3. Locking nut, 4. Nut, 5. Reactor barrel, 6. Product gas outlet, 7. Liquid medium outlet, 8. Material inlet, 9. Handle, 10. Reacted liquid medium, 11. First filter, 12. Second filter, 13. Sealing ring, 14. Catalyst basket, 15. Catalyst, 16. Basket support seat, 17. Tubular reactor, 18. Sleeve. DETAILED DESCRIPTION

[0033] The utility model proposes a catalyst basket fixing component and a fixed bed reactor. In order to make the advantages and technical solutions of the utility model clearer and more specific, the utility model is further described below in conjunction with specific embodiments.

[0034] In view of the fact that the basket inside the tubular reactor in the prior art is positioned by a sealing ring and cannot meet the requirements of the reaction conditions, the utility model proposes a catalyst basket fixing component and a fixed bed reactor, which adopt an adjustable torque device and can achieve rapid positioning by adjusting the torque transmitted by the screw. The positioning is firm and reliable, the centering accuracy is high, and the catalyst basket inside the fixed bed reactor is fully integrated, which becomes a strong guarantee for stable and efficient reaction. Therefore, the utility model is mainly aimed at organic liquid hydrogen storage technology, and optimizes the fixing method of the catalyst basket in the fixed bed reactor, so as to achieve the purpose of good contact between the catalyst and the liquid medium in the fixed bed reactor, so that the reaction process can be continuous, stable and efficient.

[0035] The catalyst basket fixing component of the utility model comprises a support seat body 1 and an adjusting and fastening component. The support seat body 1 is cross-arranged by at least two support rods, such as Figure 1 The two support rods shown, namely the first support rod and the second support rod, are cross-connected together, and side panels for being placed on the catalyst basket are provided at the ends of the first support rod and the second support rod; the four side panels are arranged vertically, and when used, they can be placed above the catalyst basket.

[0036] The above-mentioned support seat body is preferably a cross-shaped support seat, that is, the first support rod and the second support rod are vertically connected to each other, which can increase the stability of the support seat. The first support rod and the second support rod are both processed by wire cutting and argon arc welding. The selected material is stainless steel corrosion-resistant material, which is consistent with the material of the catalyst basket and the fixed bed reactor. Ensure that the catalyst basket fixing component will not have any impact on the reaction. The support seat is the force support point of the entire structure. In order to ensure the stability of the structure and the dexterity of the appearance, the thickness of the support seat plate is selected to be 8mm according to the force characteristics.

[0037] The adjusting and fastening components include screws, nuts and locking nuts. Openings are respectively arranged in the centers of the four side panels, a screw 2 is inserted into each opening, and a nut 4 for cooperating with the screw for stroke adjustment is welded on the outside of each opening. Preferably, the four nuts are coaxially welded on the outside of the corresponding openings.

[0038] A locking nut 3 is arranged inside each screw rod, and the adjusted screw rod is positioned by the locking nut 3 .

[0039] In order to ensure reliable and stable fastening, the above-mentioned screw 2 is made of high-strength stainless steel hexagonal head screw, which is convenient for adjustment using a socket wrench. The locking nut 3 is a movable locking nut, which can lock the positioned screw to prevent vibration and other factors from causing the adjustment screw to loosen and affect the positioning effect.

[0040] Embodiment 1:

[0041] The state diagram of the catalyst basket fixing member being installed in the tubular reactor 17 is as follows: Figure 2 As shown, a catalyst basket is installed inside the reactor cylinder, and a catalyst basket fixing component is located above the catalyst basket to fix the catalyst basket. Figure 3 As shown, if the catalyst basket fixing component is installed on the catalyst basket with a flange structure as the top cover, when installing, the sleeve 18 is moved along the length direction of the tubular reactor to the periphery of the catalyst basket fixing component, and the catalyst basket fixing component is located on the inner wall of the sleeve 18. The catalyst basket is fixed by the catalyst basket fixing component, thereby blocking the rise or fall of the catalyst basket, and achieving the effect of positioning the catalyst basket. The catalyst basket fixing component of the utility model ensures sufficient contact between the catalyst and the liquid, ensuring that the reaction proceeds smoothly and normally.

[0042] Embodiment 2:

[0043] The catalyst basket fixing member is installed inside the fixed bed reactor. Figure 4 As shown. The fixed bed reactor comprises a reactor cylinder, a product gas outlet 6 installed at the top of the reactor cylinder, a liquid medium outlet 7 at the upper side, and a material inlet 8 at the bottom. A basket support seat 16 is arranged on the inner wall of the reactor cylinder, a catalyst basket 14 is placed on the basket support seat 16, a catalyst 15 is filled in the catalyst basket 14, a sealing ring 13 is arranged on the side of the catalyst basket, and a first filter 11 and a second filter 12 are arranged above and below the catalyst basket, respectively. A handle 9 is arranged above the catalyst basket, and the reacted liquid medium 10 is finally discharged from the fixed bed reactor through the liquid medium outlet 7. Among them, the second filter is a sintered plate filter.

[0044] A cover is provided above the reactor cylinder, and the cover is detachably connected to the reactor cylinder, which is convenient for replacing the catalyst in the catalyst basket. After the catalyst is replaced, the catalyst basket is further fixed by the catalyst basket fixing member. The specific fixing method is: the catalyst basket is placed on the basket support seat 16 to hold the catalyst basket. The four side plates of the catalyst basket fixing member are placed on the flange of the catalyst basket cover to further position the catalyst basket.

[0045] The sealing rings on both sides of the catalyst basket are O-shaped and are installed on the annular parts of the upper and lower covers of the catalyst basket. After the catalyst is loaded, the upper basket cover can further compress the sealing ring so that the sealing ring is fully filled between the outer ring surface of the basket and the inner wall of the fixed bed reactor to achieve a sealing effect, preventing the unreacted liquid medium at the bottom from flowing out directly through this point, thereby ensuring the reaction efficiency.

[0046] During the dehydrogenation reaction, the liquid medium enters the fixed bed reactor from the material inlet 8, and after gathering inside the fixed bed reactor to reach a certain liquid level, it gradually penetrates into the catalyst through the second filter. Due to the overflow method, the liquid medium and the catalyst are fully and completely contacted and then flow out through the first filter on the top of the fixed bed reactor basket. After the liquid medium reacts, the product flows out of the fixed bed reactor from the liquid medium outlet, and the product gas is precipitated in the top space of the fixed bed reactor and discharged through the product gas outlet for the next step of treatment.

[0047] The reaction system composed of a fixed bed reactor, a catalyst basket and a catalyst basket fixing component has a good reaction effect under normal pressure or slightly positive pressure, and the manufacturing cost advantage of the reactor is obvious.

[0048] The parts not described in the present invention can be realized by adopting or drawing on the existing technology.

[0049] Although the terminology such as support base body 1, screw rod 2, locking nut 3 is used more frequently in this article, the possibility of using other terms is not excluded. The use of these terms is only for the purpose of more conveniently describing and explaining the essence of the utility model; interpreting them as any additional restrictions is contrary to the spirit of the utility model.

[0050] It should be further explained that the specific embodiments described herein are merely examples of the spirit of the present invention. A person skilled in the art of the present invention may make various modifications or additions to the specific embodiments described or replace them in a similar manner, but this will not deviate from the spirit of the present invention or exceed the scope defined by the attached claims.

Claims

1. A catalyst basket fixing member, which is installed above the catalyst basket, comprises a support seat body and an adjusting and fastening component, characterized in that: The support seat body is cross-connected by at least two support rods, and the ends of at least two support rods are provided with side plates for being placed on the catalyst basket; The adjusting and fastening components include a screw, a nut and a locking nut. Openings are respectively provided at the center of the side plates. The screw is inserted into each opening. A nut for adjusting the stroke in cooperation with the screw is welded on the outside of each opening. The locking nut is arranged inside each screw rod, and the adjusted screw rod is positioned by the locking nut.

2. A catalyst basket fixing component according to claim 1, characterized in that: The support seat body is cross-connected by a first support rod and a second support rod.

3. The catalyst basket fixing component according to claim 1, characterized in that: The four nuts are coaxially welded to the outer sides of the corresponding openings, and the side plates are arranged in pairs.

4. A catalyst basket fixing component according to claim 2, characterized in that: The first support rod and the second support rod are made of stainless steel corrosion-resistant material, and the screw rod is a stainless steel hexagonal screw rod.

5. A fixed bed reactor, comprising a reactor cylinder, wherein a catalyst basket is installed inside the reactor cylinder, characterized in that: A catalyst basket fixing component according to any one of claims 1 to 4 is installed above the catalyst basket.

6. A fixed bed reactor according to claim 5, characterized in that A basket support seat is welded on the side of the inner wall of the reactor cylinder, the catalyst basket is placed in the basket support seat, a basket cover is arranged on the top of the catalyst basket, and the catalyst basket fixing member is installed on the flange of the basket cover.

7. A fixed bed reactor according to claim 6, characterized in that A sealing ring is arranged on the side of the catalyst basket, and when the catalyst is loaded, the basket cover can compress the sealing ring.

8. A fixed bed reactor according to claim 5, characterized in that The top of the reactor cylinder is provided with a product gas outlet, the bottom is provided with a material inlet, and the upper side is provided with a liquid medium outlet.

9. A fixed bed reactor according to claim 5, characterized in that : Filters are arranged on the upper and lower parts of the catalyst basket.

10. A fixed bed reactor according to claim 5, characterized in that: A handle is arranged on the top of the catalyst basket.

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