A glass-lined distillation tower kettle

Abstract

The present invention discloses a glass-lined distillation tower kettle, which belongs to the field of chemical technology. The structure of this distillation tower kettle includes: a feed liquid pipe is connected to a preheating pipe inside the tower kettle, a mixing pipe is also connected to the preheating pipe, the preheating pipe is provided with an independent heating system, the end of the preheating pipe extends downward to the upper part of the inner bottom of the tower kettle, a guide slope is provided at the inner bottom of the tower kettle, the guide slope is located below the preheating pipe, a feed pipe is connected to one side of the filter device, the other side of the filter device is connected to the gas-liquid mixing kettle, a bypass pipe is provided on the tower kettle, an output pipe is connected to the top of the tower kettle, the end of the output pipe is connected to the condensing tower, and a catalyst bin is provided on the upper side of the feeding bin. The present invention improves the feeding mode and designs a feeding device around the catalyst. The present invention can not only flexibly adjust the catalyst loading amount according to the process conditions, but also complete the whole process automatically, and the amount of supplementation can be effectively controlled. In addition, the mixing mode of the present invention improves the mass transfer efficiency to a certain extent.

Description

Technical Field

[0001] The invention belongs to the technical field of chemical industry, and in particular relates to a glass-lined distillation tower kettle. Background Art

[0002] Catalytic distillation is the process of introducing a catalyst into a distillation tower. In the catalytic distillation process, the solid catalyst acts as a catalyst to accelerate the chemical reaction and as a filler or tower internal to provide a mass transfer surface. Due to the high coupling between the catalytic reaction and the distillation process, the reaction product can be continuously removed during the reaction, making the catalytic distillation process have the advantages of high selectivity, high production capacity, high yield, low energy consumption and low investment. Catalytic distillation is a new process that uses the coupling of separation and reaction to strengthen the reaction and separation by loading the solid catalyst in a proper form into the distillation tower. Since the catalyst is fixed in the distillation tower, it plays a role in catalysis and promoting gas-liquid heat and mass transfer. Compared with the traditional process of separate reaction and separation, catalytic distillation has the characteristics of low investment, low operating cost, energy saving and high yield. It is increasingly valued by people, and its research and application are becoming more and more extensive.

[0003] Since the catalyst plays a role in catalysis and promoting gas-liquid heat and mass transfer during the catalytic distillation process, the catalyst structure is required to have not only a high catalytic efficiency, but also a good separation effect. The catalysts used for catalytic distillation are mainly ion exchange resins and molecular sieves. The catalyst must be loaded in a special way to meet the basic requirements of reaction and distillation. The reaction section adopts a special catalyst loading method, which generally has three ways: 1. Mix the granular catalyst with the inert filler. The advantage of this method is that the catalyst is easy to load and unload, but the fine particle catalyst is stacked in the tower, resulting in excessive resistance to rising steam. 2. The granular catalyst is placed in a porous container to form a catalyst component. The porous container can be a braid such as nylon thread, or a wire mesh made of aluminum, stainless steel and other materials. This catalyst component must be connected to an elastic component to form a catalytic distillation element and have a large open space. This placement method is widely used, but because the catalyst is placed in a porous container, diffusion has a certain effect on the reaction, and the components are complex. 3. The catalyst particles are placed in the interlayer of a metal corrugated wire mesh or a flat wire mesh and the interlayer of a porous plate frame. This placement method has good mass transfer effect, but it is troublesome to load and unload. In the prior art, the common loading methods are all fixed structures. Although this mode is easy to operate, it cannot be adjusted according to the actual situation during the process. In particular, it is difficult to replenish the catalyst when the catalytic activity decreases, which affects the overall process efficiency. Moreover, the surface area provided by this loading mode is not effective, which is not conducive to fully improving the mass transfer efficiency. Summary of the invention

[0004] The technical problem to be solved by the present invention is that the process efficiency of the common glass-lined distillation tower kettle is low when performing catalytic distillation, and the catalyst loading amount is difficult to be flexibly adjusted.

[0005] In order to achieve the above technical objectives, the present invention adopts the following technical solutions:

[0006] A glass-lined distillation tower kettle comprises a tower kettle, an interlayer, a feeding bin, a feed liquid pipe, a mixing pipe, a preheating pipe, a guide slope, a base, a support, a filtering device, a gas-liquid mixing kettle, a bypass pipe, an output pipe, a condensing tower, a catalyst bin, a front horizontal bin, a rear horizontal bin, a movable plate, and an electric cylinder; the interlayer is arranged on the outer side of the tower kettle, a feeding bin is arranged on the upper part of the tower kettle, a feed liquid pipe is connected to the gas-liquid mixing kettle, the feed liquid pipe is connected to the preheating pipe inside the tower kettle, the mixing pipe is also connected to the preheating pipe, the preheating pipe is provided with an independent heating system, the end of the preheating pipe extends downward to above the inner bottom end of the tower kettle, a guide slope is arranged at the inner bottom end of the tower kettle, and the guide slope is located below the preheating pipe The tower kettle is fixedly installed on the base platform, and a plurality of pillars are fixedly installed outside the tower kettle. An incoming pipe is connected to one side of the filter device, and the other side of the filter device is connected to the gas-liquid mixing kettle. A bypass pipe is provided on the tower kettle, and a head is provided at the end of the bypass pipe. An output pipe is connected to the top of the tower kettle, and the end of the output pipe is connected to a condensation tower. A catalyst bin is provided on the upper side of the feed bin, and a front horizontal bin and a rear horizontal bin are provided on the lower side of the catalyst bin. A horizontally moving linear motor is provided in the front horizontal bin, and a valve plate is connected to the linear motor. A movable plate is rotatably connected in the rear horizontal bin, and the rear side of the electric cylinder is rotatably connected to the rear horizontal bin, and the front side of the electric cylinder is rotatably connected to the movable plate.

[0007] Preferably, a temperature measuring device is provided on the upper side of the output pipe, and a branch pipe is connected to the output pipe.

[0008] Preferably, an inner cavity is provided in the condensation tower, and the end of the output pipe is connected to the lower part of the inner cavity.

[0009] Preferably, a distributor is provided in the inner cavity, the distributor is connected to the refrigerant pipe, a wire mesh filling body is fixedly loaded in the inner cavity, and the distributor is maintained on the upper side of the wire mesh filling body.

[0010] Preferably, a flow guide pipe is provided at the top of the condensation tower.

[0011] Preferably, a heating device is provided on the lower side of the guide slope, and the heating device is held in a groove at the bottom of the tower kettle.

[0012] Preferably, a packing layer is provided in the tower kettle, and the packing layer is maintained between the preheating tube and the feeding bin.

[0013] Preferably, a support arm is connected between the preheating tube and the tower kettle, and at least three support arms are provided, and the support arms extend in the transverse direction.

[0014] Preferably, two groups of front transverse bins and rear transverse bins are provided, and a spacing groove is provided between the two groups of front transverse bins and rear transverse bins.

[0015] Preferably, an air duct is provided on the side of the gas-liquid mixing kettle, and a disc extending in a spiral direction is provided on the inner wall of the gas-liquid mixing kettle.

[0016] In the structure of the present invention, the bottom of the tower is the main body of the distillation tower, and its internal space is used for the distillation unit operation. The interlayer can be filled with heat exchange medium for auxiliary heating to improve the heat exchange efficiency of the bottom of the tower. The feeding bin can add catalyst in time during the reaction process. The feed liquid pipe and the mixing pipe are used for feeding and mixing respectively. The preheating pipe is provided with an independent heating system, which can play a preheating role in the process of the mixed liquid going down. The guide slope receives the descending mixed liquid and plays a role of guiding and extending. The base and the support together play a basic supporting role. The filtering device performs preliminary filtering on the incoming material, and then realizes gas-liquid mixing through the gas-liquid mixing kettle, and then feeds, so that the mass transfer efficiency is fully improved in the initial stage of distillation. The bypass pipe can be used for feeding or sampling. The output pipe introduces the gas phase obtained by distillation into the condensation tower for condensation. In the structure of the delivery bin, the catalyst bin contains the catalyst, and the front horizontal bin controls whether the bottom of the catalyst bin is open. After opening, the electric cylinder in the rear horizontal bin makes reciprocating motion to rotate the movable plate therein, thereby continuously replenishing the catalyst. This mode can not only be executed automatically, but also the replenishment amount is easy to control.

[0017] The invention discloses a glass-lined distillation tower reactor. The distillation tower reactor improves the feeding mode and designs a feeding device around the catalyst. The invention can not only flexibly adjust the catalyst loading amount according to the process conditions, but also complete the whole process automatically, and the feeding amount can be effectively controlled. In addition, the mixing mode of the invention improves the mass transfer efficiency to a certain extent, and has significant technical advantages. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is an overall diagram of the present invention;

[0019] Figure 2 It is the overall picture of the warehouse being sent;

[0020] Figure 3 It is the overall diagram of the condensation tower;

[0021] Figure 4 It is the overall diagram of the gas-liquid mixing kettle;

[0022] Figure 5 It is the overall picture of the tower kettle;

[0023] Among them: 1, tower kettle 2, interlayer 3, feeding bin 4, feed liquid pipe 5, mixing pipe 6, preheating pipe 7, guide slope 8, base 9, support 10, filtering device 11, gas-liquid mixing kettle 12, bypass pipe 13, output pipe 14, condensing tower 15, catalyst bin 16, front horizontal bin 17, rear horizontal bin 18, movable plate 19, electric cylinder 20, inner cavity 21, refrigerant pipe 22, distributor 23, wire mesh filling body 24, guide pipe. DETAILED DESCRIPTION

[0024] The technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the accompanying drawings. Obviously, the described embodiments are part of the embodiments of the present application, rather than all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of this application. In addition, ordinary technicians in this field know that with the development of technology and the emergence of new scenarios, the technical solutions provided in the embodiments of the present application are also applicable to similar technical problems.

[0025] In the description of the present application, it should be understood that, unless otherwise defined, all technical and scientific terms used in the present application have the same meaning as those commonly understood by those skilled in the art of the present application. In addition, any terminology used is only for the purpose of describing specific embodiments and is not intended to limit the present application.

[0026] In addition, in order to better illustrate the present application, numerous specific details are given in the following specific embodiments. It should be understood by those skilled in the art that the present application can also be implemented without certain specific details. In some examples, methods, means, components and circuits well known to those skilled in the art are not described in detail in order to highlight the subject matter of the present application.

[0027] Example 1

[0028] A glass-lined distillation tower kettle, see Figures 1 to 5, including a tower kettle 1, an interlayer 2, a feeding bin 3, a feed liquid pipe 4, a mixing pipe 5, a preheating pipe 6, a guide slope 7, a base 8, a support 9, a filtering device 10, a gas-liquid mixing kettle 11, a bypass pipe 12, an output pipe 13, a condensing tower 14, a catalyst bin 15, a front horizontal bin 16, a rear horizontal bin 17, a movable plate 18, and an electric cylinder 19; the interlayer 2 is arranged on the outside of the tower kettle 1, and a feeding bin 3 is provided on the upper part of the tower kettle 1, and a feed liquid pipe 4 is connected to the gas-liquid mixing kettle 11, and the feed liquid pipe 4 is connected to the preheating pipe 6 inside the tower kettle 1, and the mixing pipe 5 is also connected to the preheating pipe 6, and the preheating pipe 6 is provided with an independent heating system, and the end of the preheating pipe 6 extends downward to above the inner bottom end of the tower kettle 1, and a guide slope 7 is provided at the inner bottom end of the tower kettle 1, and the guide slope 7 is located below the preheating pipe 6, the tower The kettle 1 is fixedly installed on the base 8, and a plurality of pillars 9 are fixedly installed outside the tower kettle 1. A material incoming pipe is connected to one side of the filtering device 10, and the other side of the filtering device 10 is connected to the gas-liquid mixing kettle 11. A bypass pipe 12 is provided on the tower kettle 1, and a head is provided at the end of the bypass pipe 12. An output pipe 13 is connected to the top of the tower kettle 1, and the end of the output pipe 13 is connected to a condensation tower 14. A catalyst bin 15 is provided on the upper side of the feeding bin 3, and a front horizontal bin 16 and a rear horizontal bin 17 are provided on the lower side of the catalyst bin 15. A horizontally moving linear motor is provided in the front horizontal bin 16, and a valve plate is connected to the linear motor. A movable plate 18 is rotatably connected in the rear horizontal bin 17, and the rear side of the electric cylinder 19 is rotatably connected to the rear horizontal bin 17, and the front side of the electric cylinder 19 is rotatably connected to the movable plate 18.

[0029] The bottom of the tower 1 is the main body of the distillation tower, and its internal space is used for the distillation unit operation. The interlayer 2 can be filled with heat exchange medium for auxiliary heating to improve the heat exchange efficiency of the bottom of the tower 1. The feeding bin 3 can add catalyst in time during the reaction process. The feed liquid pipe 4 and the mixing pipe 5 are used for feeding and mixing respectively. The preheating pipe 6 is equipped with an independent heating system, which can play a preheating role in the process of the mixed liquid going down. The guide slope 7 receives the descending mixed liquid and plays a role in guiding and extending. The base 8 and the support 9 together play a basic supporting role. The filter device 10 performs preliminary filtration on the incoming material, and then realizes gas-liquid mixing through the gas-liquid mixing kettle 11, and then feeds, so that the mass transfer efficiency is fully improved in the initial stage of distillation. The bypass pipe 12 can be used for feeding or sampling. The output pipe 13 introduces the gas phase obtained by distillation into the condensation tower 14 for condensation. In the structure of the delivery bin 3, the catalyst bin 15 contains the catalyst, and the front horizontal bin 16 controls whether the bottom of the catalyst bin 15 is opened. After opening, the electric cylinder 19 in the rear horizontal bin 17 performs reciprocating motion to rotate the movable plate 18 therein, thereby continuously replenishing the catalyst. This mode can not only be executed automatically, but also the replenishment amount is easy to control.

[0030] Example 2

[0031] A glass-lined distillation tower kettle, see Figures 1 to 5, including a tower kettle 1, an interlayer 2, a feeding bin 3, a feed liquid pipe 4, a mixing pipe 5, a preheating pipe 6, a guide slope 7, a base 8, a support 9, a filtering device 10, a gas-liquid mixing kettle 11, a bypass pipe 12, an output pipe 13, a condensing tower 14, a catalyst bin 15, a front horizontal bin 16, a rear horizontal bin 17, a movable plate 18, and an electric cylinder 19; the interlayer 2 is arranged on the outside of the tower kettle 1, and a feeding bin 3 is provided on the upper part of the tower kettle 1, and a feed liquid pipe 4 is connected to the gas-liquid mixing kettle 11, and the feed liquid pipe 4 is connected to the preheating pipe 6 inside the tower kettle 1, and the mixing pipe 5 is also connected to the preheating pipe 6, and the preheating pipe 6 is provided with an independent heating system, and the end of the preheating pipe 6 extends downward to above the inner bottom end of the tower kettle 1, and a guide slope 7 is provided at the inner bottom end of the tower kettle 1, and the guide slope 7 is located below the preheating pipe 6, the tower The kettle 1 is fixedly mounted on the base 8, and a plurality of pillars 9 are fixedly mounted on the outside of the tower kettle 1. A material inlet pipe is connected to one side of the filter device 10, and the other side of the filter device 10 is connected to the gas-liquid mixing kettle 11. A bypass pipe 12 is provided on the tower kettle 1, and a head is provided at the end of the bypass pipe 12. An output pipe 13 is connected to the top of the tower kettle 1, and the end of the output pipe 13 is connected to the condensation tower 14. A catalyst bin 15 is provided on the upper side of the feeding bin 3, and a front horizontal bin 16 and a rear horizontal bin 17 are provided on the lower side of the catalyst bin 15. A horizontally moving linear motor is provided in the front horizontal bin 16, and a valve plate is connected to the linear motor. A movable plate 18 is rotatably connected in the rear horizontal bin 17. The rear side of the electric cylinder 19 is rotatably connected to the rear horizontal bin 17, and the front side of the electric cylinder 19 is rotatably connected to the movable plate 18. A temperature measuring device is provided on the upper side of the output pipe 13, and a branch pipe is connected to the output pipe 13. An inner cavity 20 is provided in the condensation tower 14, and the end of the output pipe 13 is connected to the lower part of the inner cavity 20. A distributor 22 is provided in the inner cavity 20, and the distributor 22 is connected to the refrigerant pipe 21. A wire mesh filler 23 is fixedly loaded in the inner cavity 20, and the distributor 22 is kept on the upper side of the wire mesh filler 23. A flow guide pipe 24 is provided at the top of the condensation tower 14. A heating device is provided on the lower side of the flow guide slope 7, and the heating device is kept in the groove at the bottom of the tower kettle 1. A packing layer is provided in the tower kettle 1, and the packing layer is kept between the preheating pipe 6 and the feeding bin 3. A support arm is connected between the preheating pipe 6 and the tower kettle 1, and at least three support arms are provided, and the support arm extends in the horizontal direction. Two groups of front horizontal bins 16 and rear horizontal bins 17 are provided, and a spacing groove is provided between the two groups of front horizontal bins 16 and rear horizontal bins 17. An air duct is provided on the side of the gas-liquid mixing kettle 11, and a disc extending in the spiral direction is provided on the inner wall of the gas-liquid mixing kettle 11.

[0032] In summary, after reading this detailed disclosure, it will be apparent to those skilled in the art that the aforementioned detailed disclosure may be presented only by way of example and may not be restrictive. Although not explicitly stated herein, it will be appreciated by those skilled in the art that this application is intended to encompass various reasonable changes, improvements and modifications to the embodiments. These changes, improvements and modifications are intended to be proposed by this application and are within the spirit and scope of the exemplary embodiments of this application.

[0033] It should be understood that in the foregoing description of the embodiments of the present application, in order to help understand a feature and to simplify the present application, the present application combines various features in a single embodiment, drawing or description thereof. However, this does not mean that the combination of these features is necessary, and it is entirely possible for those skilled in the art to extract some of the features and understand them as separate embodiments when reading the present application.

[0034] It should be understood that the embodiments disclosed herein are illustrations of the principles of the present application. Other modified embodiments are also within the scope of the present application. The embodiments disclosed herein are merely examples and not limitations, and the embodiments of the present application are not limited to the embodiments precisely described above.

Claims

1. A glass-lined distillation tower kettle, characterized in that: The invention comprises a tower kettle (1), an interlayer (2), a feeding bin (3), a liquid feed pipe (4), a mixing pipe (5), a preheating pipe (6), a flow guide slope (7), a base (8), a support (9), a filtering device (10), a gas-liquid mixing kettle (11), a bypass pipe (12), an output pipe (13), a condensing tower (14), a catalyst bin (15), a front horizontal bin (16), a rear horizontal bin (17), a movable plate (18), and an electric cylinder (19); the interlayer (2) is arranged on the tower kettle ( 1), a feeding bin (3) is provided at the top of the tower kettle (1), a liquid feed pipe (4) is connected to the gas-liquid mixing kettle (11), the liquid feed pipe (4) is connected to the preheating pipe (6) inside the tower kettle (1), the mixing pipe (5) is also connected to the preheating pipe (6), the preheating pipe (6) is provided with an independent heating system, the end of the preheating pipe (6) extends downward to above the bottom end of the tower kettle (1), a guide slope (7) is provided at the bottom end of the tower kettle (1), and the guide slope (7) is located Below the preheating tube (6), the tower kettle (1) is fixedly mounted on the base (8), a plurality of pillars (9) are fixedly mounted on the outside of the tower kettle (1), a material supply pipe is connected to one side of the filtering device (10), and the other side of the filtering device (10) is connected to the gas-liquid mixing kettle (11), a bypass pipe (12) is provided on the tower kettle (1), a head is provided at the end of the bypass pipe (12), an output pipe (13) is connected to the top of the tower kettle (1), and the end of the output pipe (13) is connected to the condensing The tower (14) is provided with a catalyst bin (15) on the upper side of the feed bin (3), and a front transverse bin (16) and a rear transverse bin (17) are provided on the lower side of the catalyst bin (15). A horizontally movable linear motor is provided in the front transverse bin (16), a valve plate is connected to the linear motor, a movable plate (18) is rotatably connected in the rear transverse bin (17), the rear side of the electric cylinder (19) is rotatably connected to the rear transverse bin (17), and the front side of the electric cylinder (19) is rotatably connected to the movable plate (18).

2. A glass-lined distillation tower reactor according to claim 1, characterized in that: A temperature measuring device is provided on the upper side of the output pipe (13), and a branch pipe is connected to the output pipe (13).

3. A glass-lined distillation tower reactor according to claim 1, characterized in that: An inner cavity (20) is provided in the condensation tower (14), and the end of the output pipe (13) is connected to the lower part of the inner cavity (20).

4. A glass-lined distillation tower kettle according to claim 3, characterized in that: A distributor (22) is provided in the inner cavity (20), and the distributor (22) is connected to the refrigerant pipe (21). A wire mesh filling body (23) is fixedly loaded in the inner cavity (20), and the distributor (22) is maintained on the upper side of the wire mesh filling body (23).

5. A glass-lined distillation tower kettle according to claim 4, characterized in that: A flow guide pipe (24) is provided at the top of the condensation tower (14).

6. The glass-lined distillation tower kettle according to claim 1, characterized in that: A heating device is provided on the lower side of the flow guide slope (7), and the heating device is held in a groove at the bottom of the tower kettle (1).

7. The glass-lined distillation tower kettle according to claim 1, characterized in that: A packing layer is provided in the tower bottom (1), and the packing layer is maintained between the preheating tube (6) and the feeding bin (3).

8. The glass-lined distillation tower kettle according to claim 1, characterized in that: A support arm is connected between the preheating tube (6) and the tower kettle (1), and at least three support arms are provided, and the support arms extend in the transverse direction.

9. The glass-lined distillation tower kettle according to claim 1, characterized in that: Two groups of front transverse bins (16) and rear transverse bins (17) are provided, and a spacing groove is provided between the two groups of front transverse bins (16) and rear transverse bins (17).

10. The glass-lined distillation tower kettle according to claim 1, characterized in that: An air duct is provided on the side of the gas-liquid mixing kettle (11), and a disc extending in a spiral direction is provided on the inner wall of the gas-liquid mixing kettle (11).

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