depolymerization column

Abstract

The application provides a depolymerization tower, comprising a depolymerization tower body, a first reaction kettle, a second reaction kettle and a condenser; a rectifying chamber is arranged in the depolymerization tower body, and the rectifying chamber is used for separating a product in a gas-liquid form; the first reaction kettle is detachably connected with one end of the depolymerization tower body, and the first reaction kettle is used for reacting raw materials and conveying the product into the depolymerization tower body; the second reaction kettle is used for being detachably connected with the one end of the depolymerization tower body after the reaction of the first reaction kettle is completed; and the condenser is used for condensing the product in the gas phase into the product in the liquid phase. The depolymerization tower provided by the application is provided with the first reaction kettle and the second reaction kettle, when the first reaction kettle needs to be cleaned and maintained after the reaction is completed, the second reaction kettle is connected with the depolymerization tower body, so that seamless production is realized, and the production efficiency of the depolymerization tower is improved.

Description

Technical Field

[0001] This application relates to the chemical industry, and more particularly to a depolymerization tower. Background Technology

[0002] A depolymerization tower is a chemical equipment used to depolymerize high molecular polymers or polymers into monomers or oligomers. Depolymerization towers typically have a tower structure and are equipped with heating devices, inlets, outlets, and other components. They are widely used in the chemical industry.

[0003] However, existing depolymerization towers have low production efficiency and cannot meet the needs of large-scale production. Utility Model Content

[0004] In view of this, the purpose of this application is to propose a depolymerization tower that, by setting up two reaction vessels, can achieve seamless production and improve production efficiency.

[0005] For the purposes described above, this application provides a depolymerization tower, comprising:

[0006] The depolymerization tower body is provided with a distillation chamber, which is used to separate the gas and liquid products of the reaction.

[0007] The first reactor is detachably connected to one end of the depolymerization tower body. The first reactor is used to react the raw materials and transport the products to the depolymerization tower body.

[0008] The second reactor is used to replace the first reactor after the reaction in the first reactor is completed and can be detachably connected to one end of the depolymerization tower.

[0009] A condenser for condensing gaseous products into liquid products.

[0010] Furthermore, the depolymerization tower body is also provided with a gas phase depolymerization chamber, which is connected to the distillation chamber. The gas phase depolymerization chamber is located below the distillation chamber in the vertical direction and is used to react the gas phase products. The first reaction vessel is detachably connected to the lower end of the depolymerization tower body.

[0011] Furthermore, the condenser includes a first condenser disposed within the depolymerization tower body, and the first condenser is located above the distillation chamber in the vertical direction; the first reactor is detachably connected to the lower end of the depolymerization tower body.

[0012] Furthermore, the first condenser includes a shell section and a pipe section. The pipe section has a channel for the movement of gaseous phase products. The shell section is arranged around the pipe section, and the shell section is circulated with coolant to cool the gaseous phase products in the pipe section.

[0013] Furthermore, the condenser also includes a second condenser located outside the depolymerization tower and connected to the first condenser.

[0014] Furthermore, the first reactor includes a reactor body and a jacketed coil, the jacketed coil being arranged around the reactor body, and a heat source being supplied inside the jacketed coil to heat the reactor body.

[0015] Furthermore, the first reactor also includes a base, the lower part of which is provided with casters to make the base movable, and the reactor body is disposed on the base and can move with the base.

[0016] Furthermore, the first reaction vessel also includes a stirring assembly and a driving assembly. The stirring assembly is disposed inside the vessel, and the driving assembly drives the stirring assembly to stir the reactants inside the vessel.

[0017] Furthermore, the first reactor is connected to one end of the depolymerization tower via a high-temperature resistant hose.

[0018] Furthermore, it also includes a first storage tank and a second storage tank; the first storage tank is used to store the product of the liquid phase whose purity does not meet the preset conditions, and the second storage tank is used to store the product of the liquid phase whose purity meets the preset conditions.

[0019] Compared with the prior art, the depolymerization tower provided in this application is equipped with a first reaction vessel and a second reaction vessel. When the first reaction vessel finishes the reaction and needs cleaning and maintenance, the second reaction vessel is connected to the depolymerization tower body, thereby achieving seamless production and improving the production efficiency of the depolymerization tower. Attached Figure Description

[0020] To more clearly illustrate the technical solutions in this application or related technologies, the drawings used in the description of the embodiments or related technologies will be briefly introduced below. Obviously, the drawings described below are only embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0021] Figure 1 This is a schematic diagram of a depolymerization tower provided in an embodiment of this application;

[0022] Figure 2 A schematic diagram of the first reaction vessel provided in an embodiment of this application;

[0023] Figure 3 A schematic diagram of the first condenser provided in an embodiment of this application;

[0024] Figure 4 This is a schematic diagram of the first storage tank provided in an embodiment of this application.

[0025] Figure Labels

[0026] 100. Depolymerization Tower;

[0027] 10. Depolymerization tower body; 11. Distillation chamber; 12. Gas-phase depolymerization chamber;

[0028] 20. First reaction vessel; 21. Vessel body; 22. Jacketed coil; 23. Base; 24. Casters; 25. Stirring assembly; 26. Drive assembly;

[0029] 30. Second Reactor;

[0030] 40. Condenser; 41. First condenser; 411. Shell section; 412. Piping section; 42. Second condenser;

[0031] 51. First storage tank; 511. Tank body; 512. Jacket; 52. Second storage tank. Detailed Implementation

[0032] To make the objectives, technical solutions, and advantages of this application clearer, the following detailed description is provided in conjunction with specific embodiments and the accompanying drawings.

[0033] It should be noted that, unless otherwise defined, the technical or scientific terms used in the embodiments of this application should have the ordinary meaning understood by one of ordinary skill in the art to which this application pertains. The terms "first," "second," and similar terms used in the embodiments of this application do not indicate any order, quantity, or importance, but are merely used to distinguish different components. Terms such as "comprising" or "including" mean that the element or object preceding the word encompasses the elements or objects listed after the word and their equivalents, without excluding other elements or objects. Terms such as "connected" or "linked" are not limited to physical or mechanical connections, but can include electrical connections, whether direct or indirect. Terms such as "upper," "lower," "left," and "right" are only used to indicate relative positional relationships; when the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0034] Please refer to Figures 1 to 4 As shown, a depolymerization tower 100 provided in this application includes: a depolymerization tower body 10, a first reaction vessel 20, a second reaction vessel 30, and a condenser 40.

[0035] The depolymerization tower body 10 is equipped with a distillation chamber 11, which is used to separate the reaction products into gas and liquid phases. A first reaction vessel 20 is detachably connected to one end of the depolymerization tower body 10. The first reaction vessel 20 is used to react the raw materials and transport the products into the depolymerization tower body 10. A second reaction vessel 30 is used to replace the first reaction vessel 20 after the reaction in the first reaction vessel 20, and is detachably connected to one end of the depolymerization tower body 10. A condenser 40 is used to condense the gaseous products into liquid products.

[0036] The depolymerization tower 100 provided in this application, by setting a first reaction vessel 20 and a second reaction vessel 30, connects the second reaction vessel 30 to the depolymerization tower body 10 when the first reaction vessel 20 finishes the reaction and needs cleaning and maintenance, thereby achieving seamless production and improving the production efficiency of the depolymerization tower 100.

[0037] Meanwhile, both the first reactor 20 and the second reactor 30 provided in this application are detachably connected to the depolymerization tower body 10, thereby facilitating the replacement of the first reactor 20 with the second reactor 30 in connection with the depolymerization tower body 10; furthermore, the detachable connection between the first reactor 20 and the depolymerization tower body 10 can compensate for the thermal expansion difference caused by the different inner wall temperatures between the first reactor 20 and the depolymerization tower body 10, thereby reducing the thermal stress between the first reactor 20 and the depolymerization tower body 10 and avoiding damage to the depolymerization tower body 10 or the first reactor 20.

[0038] Preferably, in one embodiment of the depolymerization tower 100 provided in this application, the first reaction vessel 20 is connected to one end of the depolymerization tower body 10 via a high-temperature resistant hose.

[0039] The depolymerization tower 100 provided in this application connects the depolymerization tower body 10 and the first reactor 20 by setting a high-temperature resistant hose, thereby preventing the high-temperature gaseous products generated in the first reactor 20 from damaging the connecting pipe. At the same time, the setting of the hose can reduce the stress on the pipe.

[0040] Preferably, the high-temperature resistant hose described in this application refers to a pipe that can operate at the working temperature of the depolymerization tower 100. In this embodiment, the high-temperature resistant hose is made of stainless steel and its maximum working temperature is greater than or equal to 320°C.

[0041] Optionally, in one embodiment of the depolymerization tower 100 provided in this application, the high-temperature resistant hose is made of 316L stainless steel.

[0042] Preferably, in one embodiment of the depolymerization tower 100 provided in this application, the depolymerization tower body 10 is further provided with a gas phase depolymerization chamber 12, which is connected to the distillation chamber 11. The gas phase depolymerization chamber 12 is located below the distillation chamber 11 in the vertical direction and is used to react the gas phase products. The first reaction vessel 20 is detachably connected to the lower end of the depolymerization tower body 10.

[0043] The depolymerization tower 100 provided in this application features a gas-phase depolymerization chamber 12. Vertically, the gas-phase depolymerization chamber 12 is located below the distillation chamber 11 and is connected to it. A first reaction vessel 20 is detachably connected to the lower end of the depolymerization tower body 10. The first reaction vessel 20 transports the reaction products to the gas-phase depolymerization chamber 12. Since the reaction products in the first reaction vessel 20 are gaseous, and these gaseous products may contain unreacted gaseous raw materials, the gas-phase depolymerization chamber 12 allows for a second reaction, ensuring complete reaction of the raw materials and improving the reaction rate.

[0044] Meanwhile, the gas phase depolymerization chamber 12 is positioned vertically below the distillation chamber 11. The gas phase products generated after the reaction in the gas phase depolymerization chamber 12 do not require a drive pump to transport the gas phase products to the distillation chamber 11, thus saving costs.

[0045] Optionally, in one embodiment of the depolymerization tower 100 provided in this application, the first reaction vessel 20 includes a vessel body 21 and a jacketed coil 22. The jacketed coil 22 is arranged around the vessel body 21, and a heat source is passed through the jacketed coil 22 to heat the vessel body 21.

[0046] The depolymerization tower 100 provided in this application heats the vessel body 21 by setting a jacketed coil 22, which surrounds the vessel body 21. The setting of the jacketed coil 22 can improve heat transfer efficiency, adapt to complex working conditions and save energy.

[0047] Preferably, in one embodiment of the depolymerization tower 100 provided in this application, the first reaction vessel 20 further includes a base 23, the lower part of which is provided with casters 24 so that the base 23 can move, and the vessel body 21 is disposed on the base 23 and can move with the base 23.

[0048] The depolymerization tower 100 provided in this application is equipped with a movable base 23. After the first reactor 20 finishes its reaction and is disconnected from the depolymerization tower body 10, the first reactor 20 can be moved to the cleaning area by moving the base 23 to clean the first reactor 20, which is more convenient and faster.

[0049] Preferably, in one embodiment of the depolymerization tower 100 provided in this application, the first reaction vessel 20 further includes a stirring assembly 25 and a driving assembly 26. The stirring assembly 25 is disposed inside the vessel body 21, and the driving assembly 26 drives the stirring assembly 25 to stir the reactants inside the vessel body 21.

[0050] The depolymerization tower 100 provided in this application accelerates the reaction process and improves production efficiency by setting up a stirring component 25 and a driving component 26 to stir the reaction raw materials.

[0051] Optionally, in this embodiment, for example, the stirring assembly 25 can be a paddle, a turbine, or a magnetic stirrer, and the driving assembly 26 can be a motor or a magnet assembly, etc. This application does not limit this.

[0052] Optionally, the second reactor 30 may have the same structure as the first reactor 20, and the structure of the second reactor 30 will not be described in detail here.

[0053] Preferably, in one embodiment of the depolymerization tower 100 provided in this application, the condenser 40 includes a first condenser 41. The first condenser 41 is disposed inside the depolymerization tower body 10 and is located above the distillation chamber 11 in the vertical direction. The first reaction vessel 20 is detachably connected to the lower end of the depolymerization tower body 10.

[0054] The depolymerization tower 100 provided in this application saves space by setting the first condenser 41 inside the depolymerization tower body 10, compared to setting the first condenser 41 outside the depolymerization tower body 10. At the same time, by setting the first condenser 41 inside the depolymerization tower body 10, the coolant can quickly flow back into the depolymerization tower 100, which is beneficial for quickly condensing the gaseous products into liquid in the first condenser 41.

[0055] The first condenser 41 includes a housing portion 411 and a pipe portion 412. The pipe portion 412 has a channel for the movement of gaseous products. The housing portion 411 is arranged around the pipe portion, and coolant is circulated through the housing portion 411 to cool the gaseous products in the pipe portion 412.

[0056] Preferably, in this embodiment, the condenser 40 further includes a second condenser 42, which is located outside the depolymerization tower body 10 and is connected to the first condenser 41. The second condenser 42 is used to condense the product condensed by the first condenser 41 again, thereby ensuring that the gas phase product can be completely condensed.

[0057] Optionally, in one embodiment of the depolymerization tower 100 provided in this application, the outlet of the first condenser 41 is connected to the inlet of the second condenser 42 via a pipe, and the outlet of the second condenser 42 is connected to the first storage tank 51 and the second storage tank 52 respectively.

[0058] Optionally, in the embodiments provided by the depolymerization tower 100 of this application, the depolymerization tower 100 further includes a first storage tank 51 and a second storage tank 52. The first storage tank 51 is used to store the product of the liquid phase whose purity does not meet the preset conditions, and the second storage tank 52 is used to store the product of the liquid phase whose purity meets the preset conditions.

[0059] The depolymerization tower 100 provided in this application is equipped with a first storage tank 51 and a second storage tank 52. The first storage tank 51 can transport the liquid phase product stored therein back to the first reaction vessel 20 or the second reaction vessel 30 to continue the reaction, thereby improving the purity of the product, preventing waste of raw materials, and saving costs.

[0060] Preferably, in one embodiment of the depolymerization tower 100 provided in this application, the first storage tank 51 includes a tank body 511 and a jacket 512 disposed outside the tank body 511 and surrounding the tank body 511. Coolant is circulated in the jacket 512 to cool the tank body 511, thereby maintaining the interior of the tank body 511 at a temperature suitable for storing the products.

[0061] The structure of the second storage tank 52 is the same as that of the first storage tank 51, and will not be described again in this application.

[0062] Those skilled in the art should understand that the discussion of any of the above embodiments is merely exemplary and is not intended to imply that the scope of this application (including the claims) is limited to these examples; many substitutions, modifications and variations of these embodiments will be apparent to those skilled in the art based on the foregoing description, and for the sake of brevity they are not provided in the details.

[0063] The embodiments of this application are intended to cover all such substitutions, modifications, and variations that fall within the broad scope of the appended claims. Therefore, any omissions, modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the embodiments of this application should be included within the protection scope of this application.

Claims

1. A depolymerization tower, characterized in that, include: The depolymerization tower body is provided with a distillation chamber, which is used to separate the gas and liquid products of the reaction. The first reactor is detachably connected to one end of the depolymerization tower body. The first reactor is used to react the raw materials and transport the products to the depolymerization tower body. The second reactor is used to replace the first reactor after the reaction in the first reactor is completed and can be detachably connected to one end of the depolymerization tower. A condenser for condensing gaseous products into liquid products.

2. The depolymerization tower according to claim 1, characterized in that, The depolymerization tower body is also provided with a gas phase depolymerization chamber, which is connected to the distillation chamber. The gas phase depolymerization chamber is located below the distillation chamber in the vertical direction and is used to react the gas phase products. The first reaction vessel is detachably connected to the lower end of the depolymerization tower body.

3. The depolymerization tower according to claim 1, characterized in that, The condenser includes a first condenser, which is disposed in the depolymerization tower body and is located above the distillation chamber in the vertical direction; the first reactor is detachably connected to the lower end of the depolymerization tower body.

4. The depolymerization tower according to claim 3, characterized in that, The first condenser includes a shell section and a pipe section. The pipe section has a channel for the movement of gaseous phase products. The shell section is arranged around the pipe section. The shell section is circulated with coolant to cool the gaseous phase products in the pipe section.

5. The depolymerization tower according to claim 3, characterized in that, The condenser further includes a second condenser located outside the depolymerization tower and connected to the first condenser.

6. The depolymerization tower according to claim 1, characterized in that, The first reactor includes a reactor body and a jacketed coil, the jacketed coil being arranged around the reactor body, and a heat source being passed through the jacketed coil to heat the reactor body.

7. The depolymerization tower according to claim 6, characterized in that, The first reactor also includes a base, the lower part of which is provided with casters to make the base movable, and the reactor body is disposed on the base and can move with the base.

8. The depolymerization tower according to claim 6, characterized in that, The first reaction vessel further includes a stirring assembly and a driving assembly. The stirring assembly is disposed inside the vessel body, and the driving assembly drives the stirring assembly to stir the reactants inside the vessel body.

9. The depolymerization tower according to claim 1, characterized in that, The first reactor is connected to one end of the depolymerization tower via a high-temperature resistant hose.

10. The depolymerization tower according to claim 1, characterized in that, It also includes a first storage tank and a second storage tank; the first storage tank is used to store the product of the liquid phase whose purity does not meet the preset conditions, and the second storage tank is used to store the product of the liquid phase whose purity meets the preset conditions.

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