Cyclopentadiene dimerization reactor

Abstract

The utility model discloses a cyclopentadiene dimerization reactor which comprises a thermal dimerization reaction tank body, the bottom of the thermal dimerization reaction tank body is communicated with a feeding pipe, the top of the thermal dimerization reaction tank body is communicated with a discharging pipe, and a plurality of distributors are installed in the middle of the inner wall of the thermal dimerization reaction tank body. The distributor comprises a fixed ring, two vertical plates fixedly connected to the inner side of the fixed ring and two transverse plates fixedly connected to the inner side of the fixed ring, and an energy utilization mechanism is mounted on the outer side of the thermal dimerization reaction tank body; the energy utilization mechanism comprises an annular water storage jacket, a fixed box connected to the bottom of one side of the annular water storage jacket and a water pump installed in the fixed box, and a middle groove is formed in the inner side of the annular water storage jacket. Therefore, the thermal dimerization effect can be better improved, the conversion rate of the reactor is improved, and the economic benefit of the device is improved.

Description

Technical Field

[0001] The utility model relates to the field of cyclopentadiene dimerization reaction, in particular to a cyclopentadiene dimerization reactor. Background Art

[0002] The dimerization reaction of C5 is a residence time-controlled reaction. On the one hand, when the residence time is constant, the dimerization reaction of cyclopentadiene can reach a certain conversion rate. On the other hand, DCPD can also be depolymerized into CDP at a certain temperature and concentration. Therefore, during the reaction, if the reaction products can be continuously removed, the reaction can proceed more rapidly. Otherwise, it will affect the forward reaction. Therefore, when designing the reactor, it is necessary to ensure that the flow pattern in the reactor is close to the plug flow, and there cannot be full mixing.

[0003] The existing thermal dimerization reactors use a vertical tank with a partition plate as the reactor. The problem is that the material is easy to take shortcuts and the material flow is disturbed, resulting in unsatisfactory CDP polymerization effects in some parts. The other is that the reactor is hollow. The problem is that the reaction flow pattern cannot be well controlled, which easily leads to full mixing and directly affects the economic benefits of the device. Utility Model Content

[0004] The purpose of the utility model is to provide a cyclopentadiene dimerization reactor to solve the problems raised in the above background technology.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical scheme: a cyclopentadiene dimerization reactor, comprising a thermal dimerization reaction tank body, the bottom of the thermal dimerization reaction tank body is connected to a feed pipe, the top of the thermal dimerization reaction tank body is connected to a discharge pipe, a plurality of distributors are installed in the middle of the inner wall of the thermal dimerization reaction tank body, the distributors include a fixing ring, two vertical plates fixedly connected to the inner side of the fixing ring and two horizontal plates fixedly connected to the inner side of the fixing ring, the distributors are arranged in a "well" shape, an energy utilization mechanism is installed on the outer side of the thermal dimerization reaction tank body, the energy utilization mechanism includes an annular water storage jacket, a fixing box connected to the bottom of one side of the annular water storage jacket and a water pump installed inside the fixing box, a middle groove is provided on the inner side of the annular water storage jacket, the inner wall of the middle groove is connected to an aluminum alloy heat conductive ring, and the aluminum alloy heat conductive ring is connected to the surface of the thermal dimerization reaction tank body.

[0006] Preferably, the vertical plate and the horizontal plate are perpendicular to each other, the surface of the distributor is connected with a drag rod reinforcement rib, and the reinforcement rib is connected to the surface of the inner wall of the thermal dimerization reaction tank. The reinforcement rib is used to reinforce the fixing ring of the distributor and is not easily deformed.

[0007] Preferably, the input end of the water pump is connected to a cold water pipe, and the output end of the water pump is connected to the inner cavity of the annular water storage jacket.

[0008] Preferably, the top of one side of the annular water storage jacket is connected to a hot water pipe, and the surface of the annular water storage jacket is connected to an outer insulation pad, which insulates the annular water storage jacket.

[0009] Preferably, the thermal dimerization reaction tank body includes a substrate layer, an anti-corrosion layer and a wear-resistant layer, the anti-corrosion layer is fixedly connected to both sides of the substrate layer, the wear-resistant layer is fixedly connected to the side of the anti-corrosion layer away from the substrate layer, the substrate layer is made of stainless steel, the anti-corrosion layer is made of epoxy resin, and the wear-resistant layer is made of polyvinyl chloride, and the wear-resistant layer improves the wear resistance of the thermal dimerization reaction tank body.

[0010] Compared with the prior art, the beneficial effects of the utility model are:

[0011] A distributor is arranged inside the thermal dimerization reaction tank body, and the inside of the distributor is in a "well" shape. The distributor is designed with one or more layers, depending on the needs. After adding the distributor, the material flow can flow evenly and smoothly and reduce mixing, thereby better improving the effect of thermal dimerization, improving the conversion rate of the reactor, and reducing the content of cyclopentadiene at the reactor outlet. The cyclopentadiene content at the reactor outlet of the present application is reduced, thereby reducing the solvent ratio and steam consumption of the subsequent extraction system, reducing the energy consumption of the device, improving the cyclopentadiene conversion rate, and improving the economic benefit of the device; in addition, during use, the heat on the surface of the thermal dimerization reaction tank body will be conducted to the inside of the annular water storage jacket through the aluminum alloy heat conduction ring on the inner side of the energy utilization mechanism, and cold water from the outside is pumped by a water pump. The cold water enters the cavity of the annular water storage jacket, and the cold water is heated by the heat diffused from the thermal dimerization reaction tank body, and the heat on the surface of the reactor is utilized to reduce the waste of heat energy. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a schematic diagram of the structure of the utility model;

[0013] Figure 2 This is the internal structure diagram of the thermal dimerization reaction tank of the utility model;

[0014] Figure 3 This is a top view of the structure of the distributor of the utility model;

[0015] Figure 4 This is a structural diagram of the energy utilization mechanism of the utility model;

[0016] Figure 5 This is a composition structure diagram of the thermal dimerization reaction tank of the utility model.

[0017] In the figure: 1. thermal dimerization reaction tank; 2. feed pipe; 3. discharge pipe; 4. energy utilization mechanism; 5. distributor; 6. fixing ring; 7. vertical plate; 8. horizontal plate; 9. annular water storage jacket; 10. fixing box; 11. water pump; 12. middle tank; 13. aluminum alloy heat conductive ring; 14. thermal insulation outer pad; 15. hot water pipe; 16. cold water pipe; 17. base material layer; 18. anti-corrosion layer; 19. wear-resistant layer; 20. reinforcing ribs. DETAILED DESCRIPTION

[0018] 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.

[0019] See also Figure 1-5 The utility model provides a cyclopentadiene dimerization reactor, comprising a thermal dimerization reaction tank body 1, the bottom of the thermal dimerization reaction tank body 1 is connected with a feed pipe 2, the top of the thermal dimerization reaction tank body 1 is connected with a discharge pipe 3, a plurality of distributors 5 are installed in the middle of the inner wall of the thermal dimerization reaction tank body 1, the distributor 5 comprises a fixing ring 6, two vertical plates 7 fixedly connected to the inner side of the fixing ring 6 and two horizontal plates 8 fixedly connected to the inner side of the fixing ring 6, the distributor 5 is arranged in a "well" shape, the vertical plates 7 and the horizontal plates 8 are perpendicular to each other, and the distributor The surface of the tow bar 5 is connected with a tow bar reinforcement rib 20, and the reinforcement rib 20 is connected to the surface of the inner wall of the thermal dimerization reaction tank body 1. The outer side of the thermal dimerization reaction tank body 1 is installed with an energy utilization mechanism 4, and the energy utilization mechanism 4 includes an annular water storage jacket 9, a fixing box 10 connected to the bottom of one side of the annular water storage jacket 9, and a water pump 11 installed inside the fixing box 10. The inner side of the annular water storage jacket 9 is provided with a middle groove 12, and the inner wall of the middle groove 12 is connected with an aluminum alloy heat conductive ring 13, and the aluminum alloy heat conductive ring 13 is connected to the surface of the thermal dimerization reaction tank body 1;

[0020] In this embodiment, the interior of the distributor 5 is in a "well" shape, and the distributor 5 is designed with one layer or multiple layers, depending on the needs. After adding the distributor 5, the material flow can flow evenly and smoothly and reduce mixing, thereby better improving the effect of thermal dimerization and increasing the conversion rate of the reactor.

[0021] See also Figure 1-5 The input end of the water pump 11 is connected to a cold water pipe 16, the output end of the water pump 11 is connected to the inner cavity of the annular water storage jacket 9, the top of one side of the annular water storage jacket 9 is connected to a hot water pipe 15, and the surface of the annular water storage jacket 9 is connected to a heat-insulating outer pad 14;

[0022] In this embodiment, cold water from the outside is pumped by a water pump 11, and the cold water enters the cavity of the annular water storage jacket 9. The cold water is heated by the heat diffused from the thermal dimerization reaction tank 1, thereby forming hot water for use.

[0023] See also Figure 1-5 The thermal dimerization reaction tank body 1 includes a substrate layer 17, an anti-corrosion layer 18 and a wear-resistant layer 19. The anti-corrosion layer 18 is fixedly connected to both sides of the substrate layer 17, and the wear-resistant layer 19 is fixedly connected to the side of the anti-corrosion layer 18 away from the substrate layer 17. The substrate layer 17 is made of stainless steel, the anti-corrosion layer 18 is made of epoxy resin, and the wear-resistant layer 19 is made of polyvinyl chloride.

[0024] When used specifically, the utility model provides a cyclopentadiene dimerization reactor. During use, a thermal dimerization reaction is carried out in a thermal dimerization reaction tank body 1, and the reaction product is continuously removed through a discharge pipe 3, so that the reaction can be carried out more quickly. During the thermal dimerization reaction, a distributor 5 is arranged inside the thermal dimerization reaction tank body 1, and the inside of the distributor 5 is in a "well" shape. The distributor 5 is designed with one or more layers, depending on the needs. After adding the distributor 5, the material flow can flow evenly and smoothly and reduce mixing, thereby better improving the effect of thermal dimerization, increasing the conversion rate of the reactor, and reducing the content of cyclopentadiene at the reactor outlet. The cyclopentadiene content at the reactor outlet of the present application is reduced, thereby reducing the solvent ratio and steam consumption of the subsequent extraction system, reducing the energy consumption of the device, improving the conversion rate of cyclopentadiene, improving the economic benefit of the device, improving the selectivity of cyclopentadiene, reducing the amount of polymer generated, and reducing the difficulty of dimer processing during the operation of the device;

[0025] In addition, during use, the heat on the surface of the thermal dimerization reaction tank body 1 will be conducted to the interior of the annular water storage jacket 9 through the aluminum alloy heat conductive ring 13 on the inner side of the energy utilization mechanism 4, and the cold water from the outside will be drawn by the water pump 11. The cold water enters the cavity of the annular water storage jacket 9, and the cold water will be heated by the heat diffused from the thermal dimerization reaction tank body 1, thereby forming hot water that can be used, thereby realizing cold water heat exchange, utilizing the heat on the surface of the reactor, and reducing heat energy waste.

[0026] Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art may still modify the technical solutions described in the aforementioned embodiments, or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention shall be included in the protection scope of the present invention.

Claims

1. A cyclopentadiene dimerization reactor, comprising a thermal dimerization reaction tank (1), characterized in that: The bottom of the thermal dimerization reaction tank (1) is connected to a feed pipe (2), and the top of the thermal dimerization reaction tank (1) is connected to a discharge pipe (3). A plurality of distributors (5) are installed in the middle of the inner wall of the thermal dimerization reaction tank (1). The distributors (5) include a fixing ring (6), two vertical plates (7) fixedly connected to the inner side of the fixing ring (6), and two horizontal plates (8) fixedly connected to the inner side of the fixing ring (6). The distributors (5) are arranged in a "well" shape. An energy utilization mechanism (4) is installed on the outside of the tank body (1), the energy utilization mechanism (4) comprising an annular water storage jacket (9), a fixing box (10) connected to the bottom of one side of the annular water storage jacket (9), and a water pump (11) installed inside the fixing box (10), a middle groove (12) is provided on the inside of the annular water storage jacket (9), an aluminum alloy heat conductive ring (13) is connected to the inner wall of the middle groove (12), and the aluminum alloy heat conductive ring (13) is connected to the surface of the thermal dimerization reaction tank body (1).

2. A cyclopentadiene dimerization reactor according to claim 1, characterized in that: The vertical plate (7) and the horizontal plate (8) are perpendicular to each other, and the surface of the distributor (5) is connected to a tow rod reinforcement rib (20), and the reinforcement rib (20) is connected to the surface of the inner wall of the thermal dimerization reaction tank (1).

3. A cyclopentadiene dimerization reactor according to claim 1, characterized in that: The input end of the water pump (11) is connected to a cold water pipe (16), and the output end of the water pump (11) is connected to the inner cavity of the annular water storage jacket (9).

4. A cyclopentadiene dimerization reactor according to claim 1, characterized in that: The top of one side of the annular water storage jacket (9) is connected to a hot water pipe (15), and the surface of the annular water storage jacket (9) is connected to a heat-insulating outer pad (14).

5. A cyclopentadiene dimerization reactor according to claim 1, characterized in that: The thermal dimerization reaction tank body (1) comprises a substrate layer (17), an anti-corrosion layer (18) and a wear-resistant layer (19), wherein both sides of the substrate layer (17) are fixedly connected to the anti-corrosion layer (18), and the side of the anti-corrosion layer (18) away from the substrate layer (17) is fixedly connected to the wear-resistant layer (19).

6. A cyclopentadiene dimerization reactor according to claim 5, characterized in that: The base material layer (17) is made of stainless steel, the anti-corrosion layer (18) is made of epoxy resin, and the wear-resistant layer (19) is made of polyvinyl chloride.

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