Multi-distributor double-ring depolymerization tower with uniform feeding function

Abstract

The utility model relates to the technical field of double-ring depolymerization towers, in particular to a multi-distributor double-ring depolymerization tower with a uniform feeding function, which comprises a tower body, and a feeding pipe and a discharging pipe are respectively arranged at the upper end and the lower end of the tower body in a penetrating manner; a plurality of distributors are fixed in the tower body at equal intervals from top to bottom, a catalyst bed layer assembly is mounted at the lower end of each distributor, and the catalyst bed layer assemblies are fixed in the tower body. According to the utility model, materials can uniformly fall under the action of the plurality of distributors as well as the second through holes and the first through holes which are formed in the distributors, and meanwhile, a plurality of layers of catalyst bed layer assemblies are arranged, so that the selectivity of a catalyst is improved, side reactions are reduced, the service life of the catalyst is prolonged, and cyclopentane is better generated through hydrodepolymerization of dicyclopentadiene.

Description

Technical Field

[0001] The utility model relates to the technical field of double-ring depolymerization towers, in particular to a multi-distributor double-ring depolymerization tower with a uniform feeding function. Background Technique

[0002] A depolymerizer for depolymerizing cyclopentadiene dimer substances is a commonly used device in chemical production. The so-called cyclopentadiene dimer substances refer to cyclopentadiene dimer, methylcyclopentadiene dimer, dimethylcyclopentadiene dimer, copolymer of cyclopentadiene and methylcyclopentadiene, and dimers or copolymers of other cyclopentadiene derivatives.

[0003] Cyclopentadiene usually exists in the form of a dimer. Newly prepared cyclopentadiene is quickly converted into a dimer at room temperature. The dimer is usually colorless or slightly yellowish, and has a boiling point of 170°C. Heating the cyclopentadiene dimer, especially to a temperature above 130°C, the dimer will be largely depolymerized into monomers. At the same time, cyclopentadiene monomers can also polymerize into dimers, and the two are reversible reactions.

[0004] Existing depolymerization devices have some disadvantages in actual operation: during the heating process of the heating kettle, a part of the dimer is vaporized before it can be depolymerized and enters the distillation column together with the monomers, increasing the contact opportunity and separation difficulty between the monomers and the dimer. At the same time, most of the dimer in the distillation column is cooled down and finally returns to the heating kettle to be reheated. In general, a part of the dimer is repeatedly heated and cooled. During the repeated contact and mixing process of the monomers and the dimer, the generation opportunity of high polymers (i.e., trimers, tetramers, and poly-polymers) is increased, and the high polymers are difficult to be depolymerized and cannot be used, thus reducing the utilization rate of raw materials. Therefore, the general raw material utilization rate is only 60% - 80%. Moreover, the repeated heating and cooling cause energy waste.

[0005] The existing novel depolymerizer with the patent publication number CN201128725Y includes a heating kettle, a depolymerization tower and / or a distillation column. A heater is provided in the heating kettle, and the depolymerization tower is equipped with trays and a device for heating the depolymerization tower. The trays in the depolymerization tower are floating valve trays, and the device for heating the depolymerization tower includes heating tubes or heating jackets arranged inside or outside the tower. Advantages of the utility model: The depolymerizer is added with a depolymerization tower, which can enable the undepolymerized dimer to continue to depolymerize during the rising process in the tower, thereby strengthening the depolymerization effect and improving the depolymerization efficiency. The feeding method of the depolymerizer is more flexible. The raw materials can be directly added into the depolymerization kettle, or added from the middle or upper part of the depolymerization tower. The raw materials are depolymerized step by step along the trays, and the final residue is discharged from the bottom of the heating kettle, which can further improve the depolymerization efficiency.

[0006] The above technology cannot evenly distribute the materials, which will also result in the materials not being able to fully react, and is not conducive to the hydrogenation and depolymerization of dicyclopentadiene to produce cyclopentane, so it needs to be improved. Utility Model Content

[0007] The utility model aims to solve the shortcomings in the prior art and proposes a multi-distributor double-ring depolymerization tower with a uniform feeding function.

[0008] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0009] A multi-distributor double-ring depolymerization tower with a uniform feeding function, comprising a tower body, wherein a feed pipe and a discharge pipe are respectively penetrated at the upper end and the lower end of the tower body;

[0010] A plurality of distributors are fixed in the tower body at equal intervals from top to bottom, a catalyst bed assembly is installed at the lower end of the distributor, and the catalyst bed assembly is fixed in the tower body;

[0011] A plurality of second through holes are evenly spaced in the middle of the distributor, and a plurality of first through holes are evenly spaced outside the distributor. The diameter of the first through holes is greater than the diameter of the second through holes, and the distance between two adjacent second through holes is greater than the distance between two adjacent first through holes.

[0012] Preferably, a power mechanism is installed at the upper end of the tower body, and a vertical shaft member and a sleeve member are provided on the power mechanism, and a linkage mechanism is provided on the sleeve member, and a round tube member and an inner gear ring are provided on the linkage mechanism, and a tension spring member is fixed between the round tube member and the tower body, and the round tube member and the feed pipe are slidingly connected at one end located in the tower body, and a cover assembly is fixed to the lower end of the inner gear ring, and a dispersion plate is fixed to the bottom of the cover assembly.

[0013] Preferably, the power mechanism includes a motor assembly installed on one side of the upper end of the tower body, the output shaft of the motor assembly extends into the tower body, the vertical shaft member is fixed on the output shaft of the motor assembly, a push plate member is fixed to the lower end of the vertical shaft member, and the sleeve member is slidably sleeved on the vertical shaft member.

[0014] Preferably, the linkage mechanism includes a circular ring member rotatably sleeved on a sleeve member, the circular tube member is penetrated and arranged on the circular ring member, the circular ring member and the cover body assembly are rotatably sleeved, a gear member is fixed on the sleeve member, the gear member is meshed with an inner gear ring, a lifting mechanism is installed on the gear member, and the lifting mechanism is connected to the tower body.

[0015] Preferably, the lifting mechanism comprises a resistance wheel member fixed to the upper end of the gear member, an arc-shaped end toothed disc member is fixed to the top of the tower body, the arc-shaped end toothed disc member and the resistance wheel member are in conflict with each other, and the arc-shaped end toothed disc member and the vertical shaft member are coaxially arranged.

[0016] The beneficial effects of the utility model are:

[0017] 1. In actual production and preparation, the diameter of the first through hole is larger than the diameter of the second through hole, and the spacing between two adjacent first through holes is smaller than the spacing between two adjacent second through holes, so that the material can fall better to ensure the uniformity of the fall. At the same time, a multi-layer catalyst bed assembly is set to improve the catalyst selectivity, reduce side reactions, and extend the catalyst life;

[0018] 2. Through the action of the motor assembly, the vertical shaft member can drive the sleeve member to rotate, the gear member can drive the inner gear ring to rotate, the push plate member can hit the material, and at the same time, the cover assembly and the dispersion plate can vibrate under the cooperation of the resistance wheel member and the arc-shaped end gear plate member, so as to better distribute the material evenly;

[0019] In summary, the utility model can achieve uniform material falling through the multiple distributors and the second through holes and the first through holes arranged on the distributors, and at the same time, a multi-layer catalyst bed assembly is arranged to improve catalyst selectivity, reduce side reactions, extend catalyst life, and better carry out dicyclopentadiene hydrogenation and depolymerization to produce cyclopentane. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a structural diagram of the utility model;

[0021] Figure 2 It is a top view of the distributor of the utility model;

[0022] Figure 3 This is the internal structure diagram of the tower body of the utility model;

[0023] Figure 4 For the utility model Figure 3 A magnified image of point A;

[0024] In the figure: 1 tower body, 2 feed pipe, 3 discharge pipe, 4 distributor, 5 catalyst bed assembly, 6 first through hole, 7 second through hole, 8 cover assembly, 9 dispersion plate, 10 tension spring component, 11 round tube component, 12 round ring component, 13 push plate component, 14 motor component, 15 arc-shaped end gear plate component, 16 resistance wheel component, 17 gear component, 18 sleeve component, 19 vertical shaft component. DETAILED DESCRIPTION

[0025] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0026] Reference Figures 1 - 4, A multi-distributor double-ring depolymerization tower with a uniform feeding function, including a tower body 1. The upper and lower ends of the tower body 1 are respectively provided with a feed pipe 2 and a discharge pipe 3, which facilitate the falling of materials and the discharge of the reaction products.

[0027] Refer to Figures 1 - 2 , A plurality of distributors 4 are fixedly arranged at equal intervals from top to bottom in the tower body 1. A catalyst bed component 5 is installed at the lower end of the distributor 4. The catalyst bed component 5 is fixed in the tower body 1 and multiple catalyst bed components 5 are arranged in layers, which can improve the selectivity of the catalyst, reduce side reactions, and prolong the service life of the catalyst.

[0028] Refer to Figures 1 - 2 , A plurality of second through holes 7 are arranged at equal intervals in the middle of the distributor 4. A plurality of first through holes 6 are arranged at equal intervals outside the distributor 4. The diameter of the first through hole 6 is larger than that of the second through hole 7. The distance between two adjacent second through holes 7 is greater than the distance between two adjacent first through holes 6. Through the setting of the distribution gap and the distribution quantity, the external materials can fall better. Because in actual production preparation, the materials will fall on the middle part of the distributor 4, making it easier for the materials to fall from the middle. The setting of the first through hole 6 can ensure that the materials fall evenly into the catalyst bed component 5.

[0029] Refer to Figures 3 - 4 , A power mechanism is installed at the upper end of the tower body 1. A vertical shaft member 19 and a sleeve member 18 are arranged on the power mechanism. The power mechanism includes a motor assembly 14 installed on one side of the upper end of the tower body 1. The output shaft of the motor assembly 14 extends into the tower body 1. The vertical shaft member 19 is fixed on the output shaft of the motor assembly 14. A push plate member 13 is fixed at the lower end of the vertical shaft member 19. The sleeve member 18 is slidably sleeved on the vertical shaft member 19. A linkage mechanism is arranged on the sleeve member 18. A circular pipe member 11 and an internal gear ring are arranged on the linkage mechanism. A tension spring member 10 is jointly fixed between the circular pipe member 11 and the tower body 1. The circular pipe member 11 is slidably connected to the end of the feed pipe 2 located in the tower body 1. The lower end of the internal gear ring is fixed with a cover body assembly 8. A dispersion plate 9 is fixed at the bottom of the cover body assembly 8. The motor assembly 14 drives the vertical shaft member 19 to rotate, which can make the push plate member 13 pat and disperse the materials, making it better for the materials to fall on the dispersion plate 9. As the vertical shaft member 19 drives the gear member 17 to rotate, the internal gear ring can drive the cover body assembly 8 to rotate, making it better for the materials to be leveled.

[0030] Refer to Figures 3 - 4The linkage mechanism includes a circular ring member 12 rotatably sleeved on a sleeve member 18, a circular tube member 11 is arranged on the circular ring member 12, the circular ring member 12 and the cover assembly 8 are rotatably sleeved, a gear member 17 is fixed on the sleeve member 18, the gear member 17 is meshed with the inner gear ring, a lifting mechanism is installed on the gear member 17, the lifting mechanism is connected to the tower body 1, the lifting mechanism includes a contact wheel member 16 fixed on the upper end of the gear member 17, and an arc is fixed on the top of the tower body 1 The end toothed disc member 15, the arc-shaped end toothed disc member 15 and the conflicting wheel member 16 conflict with each other, and the arc-shaped end toothed disc member 15 and the vertical shaft member 19 are coaxially arranged. When the vertical shaft member 19 rotates, the gear member 17 can drive the conflicting wheel member 16 to rotate, and the conflicting wheel member 16 can drive the sleeve member 18 to drive the circular ring member 12 to rise and fall through the arc-shaped end toothed disc member 15. The lifting and lowering of the circular ring member 12 can make the cover body assembly 8 drive the dispersion plate 9 to vibrate, so that the material is better evenly distributed on the dispersion plate 9.

[0031] In the utility model, during actual production and preparation, the material falls on the distributor 4 through the action of the feed pipe 2, and the material can be evenly dropped on the catalyst bed assembly 5 through the action of the second through hole 7 and the first through hole 6 on the distributor 4, and a plurality of distributors 4 and catalyst bed assemblies 5 are arranged in the tower body 1, and the corresponding catalyst bed assembly 5 is installed at the lower end of the distributor 4, which helps to improve the catalyst selectivity, reduce side reactions, and extend the catalyst life;

[0032] Moreover, through the action of the motor assembly 14, the vertical shaft member 19 can drive the sleeve member 18 to rotate, the gear member 17 can drive the inner gear ring to rotate, and the push plate member 13 can hit the material. At the same time, with the cooperation of the resistance wheel member 16 and the arc-shaped end toothed disk member 15, the cover body assembly 8 and the dispersion plate 9 can vibrate, so as to better distribute the material evenly.

[0033] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A multi-distributor double-ring depolymerization tower with a uniform feeding function, comprising a tower body (1), characterized in that: The upper and lower ends of the tower body (1) are respectively provided with a feed pipe (2) and a discharge pipe (3) passing through them; Inside the tower body (1), a plurality of distributors (4) are fixedly arranged at equal intervals from top to bottom. A catalyst bed component (5) is installed at the lower end of the distributor (4), and the catalyst bed component (5) is fixed inside the tower body (1); A plurality of second through holes (7) are provided at equal intervals in the middle of the distributor (4). A plurality of first through holes (6) are provided at equal intervals outside the distributor (4). The diameter of the first through hole (6) is larger than that of the second through hole (7), and the distance between two adjacent second through holes (7) is greater than the distance between two adjacent first through holes (6).

2. The multi-distributor double-ring depolymerization tower with a uniform feeding function according to claim 1, characterized in that: A power mechanism is installed at the upper end of the tower body (1). A vertical shaft member (19) and a sleeve member (18) are provided on the power mechanism. A linkage mechanism is provided on the sleeve member (18). A circular pipe member (11) and an internal gear ring are provided on the linkage mechanism. A tension spring member (10) is fixedly arranged between the circular pipe member (11) and the tower body (1). The circular pipe member (11) is slidably connected to the end of the feed pipe (2) located inside the tower body (1). A cover body component (8) is fixed at the lower end of the internal gear ring, and a dispersion plate (9) is fixed at the bottom inside the cover body component (8).

3. The multi-distributor double-ring depolymerization tower with a uniform feeding function according to claim 2, characterized in that: The power mechanism includes a motor component (14) installed on one side of the upper end of the tower body (1). The output shaft of the motor component (14) extends into the tower body (1). The vertical shaft member (19) is fixed on the output shaft of the motor component (14). A push plate member (13) is fixed at the lower end of the vertical shaft member (19), and the sleeve member (18) is slidably sleeved on the vertical shaft member (19).

4. The multi-distributor double-ring depolymerization tower with a uniform feeding function according to claim 2, characterized in that: The linkage mechanism includes a circular ring member (12) rotatably sleeved on the sleeve member (18). The circular pipe member (11) passes through the circular ring member (12). The circular ring member (12) is rotatably sleeved with the cover body component (8). A gear member (17) is fixed on the sleeve member (18). The gear member (17) meshes with the internal gear ring. A lifting mechanism is installed on the gear member (17), and the lifting mechanism is connected to the tower body (1).

5. The multi-distributor double-ring depolymerization tower with a uniform feeding function according to claim 4, wherein: The lifting mechanism includes a contact wheel member (16) fixed at the upper end of the gear member (17). An arc-shaped end tooth disc member (15) is fixed at the top inside the tower body (1). The arc-shaped end tooth disc member (15) is in contact with the contact wheel member (16), and the arc-shaped end tooth disc member (15) and the vertical shaft member (19) are coaxially arranged.

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