Vacuum steam stripping device

Abstract

The utility model discloses a vacuum steam stripping device which comprises a device body, a first distribution module, a second distribution module and a third distribution module, wherein the first distribution module, the second distribution module and the third distribution module are sequentially arranged in the device body from top to bottom; the first distribution module, the second distribution module and the third distribution module are respectively used for carrying out primary distribution, secondary distribution and tertiary distribution on materials; a first feeding hole is formed in the middle upper end of the device body, and the position of the first feeding hole corresponds to the position of the first distribution module; a steam input port and a discharge port are formed in the lower end of the device body, and are positioned below the third distribution module. According to the steam stripping device disclosed by the utility model, materials entering the steam stripping device are uniformly distributed for three times, so that the materials are in full contact with steam, the steam stripping quality is improved, the steam consumption is reduced, and the cost is effectively reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of chemical equipment, in particular to a vacuum stripping device. Background Art

[0002] As a common chemical device, the stripping device is widely used in the petroleum, chemical, pharmaceutical and other industries. The stripping device is mainly used to separate certain components from a liquid mixture. Its separation principle is mainly to use the vaporization characteristics of different components at different temperatures to achieve separation. A series of distribution structures are usually set up in the stripping device to evenly distribute the materials in the device, so as to increase the contact area between the material and the steam and enhance the stripping effect.

[0003] In the prior art, two different distribution structures are usually set up to make the material evenly distributed twice in the device, but the steam stripping effect produced by this setting method is not ideal, the material distribution is not uniform, and carbonization and other phenomena are prone to occur, affecting product quality; the contact between the material and the steam is not sufficient, the component separation rate is low, and the steam consumption is large, and the cost is high. Utility Model Content

[0004] In order to solve the above problems, the utility model provides a vacuum stripping device. By setting a first distribution module, a second distribution module and a third distribution module, the material can be distributed three times after entering the device, so that the material distribution is more uniform, the contact between the material and the steam is more sufficient, the stripping quality is improved, the steam consumption is reduced, and the cost is reduced.

[0005] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0006] A vacuum stripping device comprises a device body and a first distribution module, a second distribution module and a third distribution module which are sequentially arranged inside the device body from top to bottom;

[0007] The first distribution module, the second distribution module and the third distribution module are used to perform primary distribution, secondary distribution and tertiary distribution of materials respectively;

[0008] A first feed inlet is provided at the middle upper end of the device body, and the position of the first feed inlet corresponds to the position of the first distribution module;

[0009] A steam input port and a material discharge port are provided at the lower end of the device body, and both the steam input port and the material discharge port are located below the third distribution module.

[0010] As a further description of the technical solution of the utility model, the first distribution module includes a feed distributor, and the feed distributor is a ring groove structure. The ring groove structure can control the residence time of the material, so that the material and the steam are fully contacted, and the component separation rate is improved.

[0011] As a further description of the technical solution of the utility model, a plurality of first through holes are provided at the bottom of the feed distributor, and the first through holes allow the material to flow into the second distribution module.

[0012] As a further description of the technical solution of the utility model, the second distribution module includes a liquid distributor, the liquid distributor includes a first distribution groove and a second distribution groove, the first distribution groove is connected above the second distribution groove, and the extension direction of the first distribution groove is perpendicular to the extension direction of the second distribution groove;

[0013] The number of the first distribution slots is one or more, and the number of the second distribution slots is more than one. Distributing the material through the first distribution slots and the second distribution slots can further increase the contact area between the material and the steam and enhance the stripping effect.

[0014] As a further description of the technical solution of the utility model, a plurality of guide protrusions are formed upward on the bottom surface of the first distribution groove, a plurality of second through holes are opened on the guide protrusions, and a plurality of third through holes are opened at the bottom of the second distribution groove;

[0015] The number of the guide protrusions matches the number of the second distribution grooves, and each guide protrusion corresponds to each second distribution groove. The guide protrusion can guide the material in the first distribution groove to flow into the second distribution groove, thereby realizing rapid distribution of the material.

[0016] As a further description of the technical solution of the utility model, a buffer tray is provided in the first distribution groove, the buffer tray is located above the guide protrusion and covers the guide protrusion, and the buffer tray is used to slow down the speed of the material flowing into the first distribution groove. The buffer tray can slow down the flow rate of the logistics, prolong the contact time between the material and the steam, and enable the material to fully contact with the steam.

[0017] As a further description of the technical solution of the utility model, the second distribution module also includes a liquid collector, which is located above the first distribution trough. The liquid collector is used to collect materials flowing out of the first distribution module and then evenly distribute them to the first distribution trough.

[0018] As a further description of the technical solution of the utility model, the liquid collector is a shutter-type liquid collector.

[0019] As a further description of the technical solution of the utility model, the third distribution module includes a plate corrugated structured packing and a packing support grid for supporting the plate corrugated structured packing.

[0020] As a further description of the technical solution of the utility model, the inclination angle of the plate corrugated structured packing is greater than 90 degrees. By changing the inclination angle of the plate corrugated structured packing, the contact area between the material and the steam can be increased, the gas-liquid turbulence can be enhanced, and the separation efficiency can be improved.

[0021] Based on the above technical solution, the technical effects achieved by the utility model are:

[0022] The vacuum stripping device provided by the utility model is provided with a first distribution module, a second distribution module and a third distribution module, so that the material is distributed three times after entering the device body, and the distribution is more uniform, thereby improving the mass transfer capacity of the vacuum stripping device, making the contact between the material and the steam more sufficient, achieving a good separation effect, improving the stripping quality, reducing the steam consumption and reducing the cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 This is a schematic structural diagram of a vacuum stripping device according to Example 1 of the utility model;

[0024] Figure 2 It is a front view of a feed distributor according to Embodiment 2 of the present utility model;

[0025] Figure 3 A top view of a feed distributor according to Embodiment 2 of the present utility model;

[0026] Figure 4 for Figure 3 A magnified view of part A;

[0027] Figure 5 This is a schematic diagram of the structure of the second distribution module of Embodiment 3 of the present utility model;

[0028] Figure 6 It is a front view of the first distribution slot of Example 3 of the utility model;

[0029] Figure 7 A top view of the first distribution slot of Example 3 of the utility model;

[0030] Figure 8 It is a front view of the second distribution slot of Example 3 of the utility model;

[0031] Fig. 9 A top view of the second distribution slot of Example 3 of the utility model;

[0032] Fig.10 It is a front view of the liquid collector of Example 3 of the utility model;

[0033] Fig.11 A top view of a liquid collector according to Embodiment 3 of the present utility model;

[0034] Fig.12 This is a schematic diagram of the structure of the third distribution module of Example 4 of the utility model.

[0035] 1-device body; 11-first feed inlet; 12-steam input port; 13-discharge port; 14-second feed inlet; 15-third feed inlet;

[0036] 2-first distribution module; 21-feed distributor; 211-first through hole;

[0037] 3-second distribution module; 31-liquid distributor; 311-first distribution slot; 3111-flow guiding protrusion; 3112-buffer plate; 312-second distribution slot; 32-liquid collector;

[0038] 4-the third distribution module; 41-plate corrugated structured packing; 42-packing support grid. DETAILED DESCRIPTION

[0039] In order to facilitate the understanding of the present invention, the present invention will be described more comprehensively in conjunction with the accompanying drawings and specific embodiments. The accompanying drawings provide preferred embodiments of the present invention. However, the present invention can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the disclosure of the present invention more thoroughly and comprehensively understood.

[0040] It should be noted that when an element is referred to as being "fixed to" another element, it may be directly on the other element or there may be an intermediate element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be an intermediate element at the same time.

[0041] In the description of the present utility model, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inside", "outside", etc. indicate the orientation or position relationship based on the orientation or position relationship shown in the accompanying drawings, or the orientation or position relationship in which the utility model product is usually placed when in use, which is only for the convenience of describing the utility model and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present utility model. In addition, the terms "first", "second", "third", etc. are only used to distinguish the description, and cannot be understood as indicating or implying relative importance.

[0042] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art of the present invention. The terms used herein in the specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention.

[0043] Example 1

[0044] refer to Figure 1 The present embodiment provides a vacuum stripping device, comprising a device body 1 and a first distribution module 2, a second distribution module 3 and a third distribution module 4 which are sequentially arranged inside the device body 1 from top to bottom. The first distribution module 2, the second distribution module 3 and the third distribution module 4 are used to perform primary distribution, secondary distribution and tertiary distribution of materials, respectively.

[0045] Furthermore, a first feed port 11 is provided at the middle and upper end of the device body 1, and the position of the first feed port 11 corresponds to the position of the first distribution module 2. When the material enters the device body 1 from the first feed port 11, it enters the first distribution module 2 for the first distribution. In some embodiments, a second feed port 14 and a third feed port 15 can also be arranged in parallel above the first feed port 11, and the feeding efficiency can be improved by feeding through the three feed ports at the same time. Since the first feed port 11, the second feed port 14 and the third feed port 15 are at different heights, when feeding at the same time, the materials of each feed port arrive at the first distribution module 2 at different times, which can play a role of diversion, so that the contact between the material and the steam is more sufficient, and the stripping effect is better.

[0046] The lower end of the device body 1 is provided with a steam input port 12 and a discharge port 13, both of which are located below the third distribution module 4. In some embodiments, the discharge port 13 may be provided below the steam input port 12, and a steam distributor may be provided at a corresponding position of the steam input port 12, so that the steam can be evenly distributed after entering the device body 1 from the steam input port 12, so that the contact between the steam and the material is more sufficient, further improving the mass transfer capacity of the vacuum stripping device, improving the stripping efficiency, reducing the use of steam, and reducing energy consumption.

[0047] It can be understood that the material enters the device body 1 from the first feed port 11, and after entering the device body 1, it first passes through the first distribution module 2 for the first uniform distribution, then flows into the second distribution module 3 for the second uniform distribution, and finally flows into the third distribution module 4 for the third uniform distribution, and is output from the discharge port 13 after the stripping is completed. By distributing the material three times, the material can be distributed more evenly during the stripping process, so that the contact between the material and the steam is more sufficient, the stripping effect is enhanced, the separation efficiency is improved, the steam consumption is reduced, and the cost is effectively reduced.

[0048] Example 2

[0049] refer to Figures 2 to 4 As a further optimization of Example 1, the first distribution module 2 includes a feed distributor 21, and the feed distributor 21 is a ring groove structure. Further, a plurality of first through holes 211 are opened at the bottom of the feed distributor 21, and the plurality of first through holes 211 are evenly distributed. The first through holes 211 allow the material to flow into the second distribution module 3. The size of the first through hole 211 can be set according to the actual separation requirements, and the size of the first through hole 211 determines the residence time of the material in the feed distributor 21.

[0050] It is understandable that when the material enters the first distribution module 2, it will enter the feed distributor 21 and begin to spread until it covers the feed distributor 21, and then flow into the second distribution module 3 through the first through hole 211 at the bottom of the feed distributor 21. The feed distributor 21 can control the residence time of the material through the size of the first through hole 211, so that the material is fully in contact with the steam, thereby improving the separation efficiency of the components and enhancing the stripping effect.

[0051] Example 3

[0052] refer to Figures 5 to 11 As a further optimization of Example 1, the second distribution module 3 includes a liquid distributor 31, and the liquid distributor 31 includes a first distribution slot 311 and a second distribution slot 312. The first distribution slot 311 is connected above the second distribution slot 312, and the extension direction of the first distribution slot 311 is perpendicular to the extension direction of the second distribution slot 312. Specifically, the number of the first distribution slots 311 is one or more, preferably multiple, and the number of the second distribution slots 312 is multiple. Through the vertical cross distribution of multiple first distribution slots 311 and multiple second distribution slots 312, the distribution of materials can be made more uniform, the contact area between materials and steam is further increased, the mass transfer capacity of the vacuum stripping device is improved, the stripping effect is good, and the liquid distributor 31 has a simple structure, a small required space, and great operational flexibility.

[0053] Further, a plurality of guide protrusions 3111 are formed upward on the bottom surface of the first distribution slot 311, and the guide protrusions 3111 are used to guide the material to flow into the second distribution slot 312. A plurality of second through holes are formed on the guide protrusions 3111, and the material can flow into the second distribution slot 312 through the second through holes. A plurality of third through holes are formed at the bottom of the second distribution slot 312, and the material can flow into the third distribution module 4 through the third through holes. Specifically, the number of the guide protrusions 3111 matches the number of the second distribution slots 312, and each guide protrusion 3111 corresponds to each second distribution slot 312.

[0054] In some embodiments, the top of the guide protrusion 3111 is formed with two symmetrical inclined structures upward, which can play a better role in guiding the flow, and the bottom of the second distribution groove 312 is formed with two symmetrical inclined structures downward, which can play a role in drainage. In some embodiments, a support grid can also be set below the liquid distributor 31 to support the liquid distributor 31.

[0055] Furthermore, a buffer tray 3112 is provided in the first distribution slot 311. The buffer tray 3112 is located above the guide protrusion 3111 and covers the guide protrusion 3111. The buffer tray 3112 is used to slow down the speed of the material flowing into the first distribution slot 311. The buffer tray 3112 is a disc-shaped structure, and a plurality of through holes are provided at the bottom of the buffer tray 3112. When the material flows from the first distribution module 2 into the second distribution module 3, it first passes through the buffer tray 3112. The buffer tray 3112 can slow down the speed of the material flowing into the first distribution slot 311, prolong the contact time between the material and the steam, further promote the contact between the material and the steam, and improve the stripping efficiency and quality.

[0056] As a further optimization, the second distribution module 3 also includes a liquid collector 32, which is located above the first distribution trough 311. The liquid collector 32 is used to collect the material flowing out of the first distribution module 2 and then evenly distribute it to the first distribution trough 311. Specifically, the liquid collector 32 is a louver-type liquid collector. The louver-type liquid collector includes a liquid collecting plate and a liquid collecting trough. The material enters the liquid collecting trough through the drainage effect of the liquid collecting plate and flows from the liquid collecting trough into the first distribution trough 311 in an overflow manner. The liquid collector 32 collects and redistributes the material flowing out of the first distribution module 2, which can further improve the uniformity of material distribution, improve the stripping efficiency and quality, and reduce energy consumption.

[0057] Example 4

[0058] refer to Fig.12 As a further optimization of Example 1, the third distribution module 4 includes a plate corrugated structured packing 41 and a packing support grid 42 for supporting the plate corrugated structured packing 41. In a specific embodiment, the height of the plate corrugated structured packing 41 is 4.5 m.

[0059] In a specific embodiment, a plurality of through holes are provided on the corrugated plate of the plate corrugated structured packing 41. When the material flows out from the second distribution module 3, it flows into the plate corrugated structured packing 41 and is filled layer by layer through the through holes on the corrugated plate. During the filling process, the material is in full contact with the steam, thereby achieving separation of the components.

[0060] As a further optimization, the inclination angle of the plate corrugated structured packing 41 is greater than 90 degrees. Since the inclination angle of the plate corrugated structured packing 41 is an obtuse angle greater than 90 degrees, the maximum distance between the upper and lower layers of corrugated plates is reduced, so that the distribution of materials on each layer of corrugated plates is more uniform, the gas-liquid turbulence of the vacuum stripping device is promoted, the mass transfer capacity is improved, the contact area between the material and the steam is increased, and the contact between the material and the steam is more sufficient, thereby improving the stripping quality and separation efficiency. At the same time, it can reduce the use of steam, reduce energy consumption, and help reduce costs.

[0061] The above contents are merely examples and illustrations of the structure of the utility model, and the description is relatively specific and detailed, but it cannot be understood as limiting the scope of the patent of the utility model. It should be pointed out that for ordinary technicians in this field, several modifications and improvements can be made without departing from the concept of the utility model, and these obvious replacement forms all belong to the protection scope of the utility model.

Claims

1. A vacuum stripping device, characterized in that: It comprises a device body (1) and a first distribution module (2), a second distribution module (3) and a third distribution module (4) which are arranged inside the device body (1) in order from top to bottom; The first distribution module (2), the second distribution module (3) and the third distribution module (4) are used to perform primary distribution, secondary distribution and tertiary distribution on the material respectively; A first feed inlet (11) is provided at the middle upper end of the device body (1), and the position of the first feed inlet (11) corresponds to the position of the first distribution module (2); A steam input port (12) and a material discharge port (13) are provided at the lower end of the device body (1), and the steam input port (12) and the material discharge port (13) are both located below the third distribution module (4).

2. The vacuum stripping device according to claim 1, characterized in that: The first distribution module (2) comprises a feed distributor (21), and the feed distributor (21) is an annular groove structure.

3. The vacuum stripping device according to claim 2, characterized in that: The bottom of the feed distributor (21) is provided with a plurality of first through holes (211), and the first through holes (211) allow the material to flow into the second distribution module (3).

4. The vacuum stripping device according to claim 1, characterized in that: The second distribution module (3) comprises a liquid distributor (31), the liquid distributor (31) comprising a first distribution groove (311) and a second distribution groove (312), the first distribution groove (311) is connected above the second distribution groove (312), and an extension direction of the first distribution groove (311) and an extension direction of the second distribution groove (312) are perpendicular to each other; The number of the first distribution grooves (311) is one or more, and the number of the second distribution grooves (312) is more than one.

5. The vacuum stripping device according to claim 4, characterized in that: A plurality of flow-guiding protrusions (3111) are formed upward on the bottom surface of the first distribution groove (311), a plurality of second through holes are opened on the flow-guiding protrusions (3111), and a plurality of third through holes are opened on the bottom of the second distribution groove (312); The number of the flow-guiding protrusions (3111) matches the number of the second distribution grooves (312), and each of the flow-guiding protrusions (3111) corresponds to each of the second distribution grooves (312).

6. The vacuum stripping device according to claim 5, characterized in that: A buffer plate (3112) is provided in the first distribution groove (311), and the buffer plate (3112) is located above the flow-guiding protrusion (3111) and covers the flow-guiding protrusion (3111), and the buffer plate (3112) is used to slow down the speed at which materials flow into the first distribution groove (311).

7. The vacuum stripping device according to claim 4, characterized in that: The second distribution module (3) further comprises a liquid collector (32), wherein the liquid collector (32) is located above the first distribution trough (311), and the liquid collector (32) is used to collect material flowing out of the first distribution module (2) and then evenly distribute the material to the first distribution trough (311).

8. The vacuum stripping device according to claim 7, characterized in that: The liquid collector (32) is a shutter-type liquid collector.

9. The vacuum stripping device according to claim 1, characterized in that: The third distribution module (4) comprises a plate corrugated structured packing (41) and a packing support grid (42) for supporting the plate corrugated structured packing (41).

10. The vacuum stripping device according to claim 9, characterized in that: The inclination angle of the plate corrugated structured packing (41) is greater than 90 degrees.

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