A winding multi-level flow splitting device

Abstract

This application relates to the technical field of petrochemical industry, and in particular, to a winding multi-level flow splitting device, including: a tower body, the interior of the tower body is hollow, and a plurality of distillation layers are arranged in the tower body. Each distillation layer is connected with a distillation pipe and a heat conduction pipe. Each distillation pipe is arranged in a spiral shape, and the distillation pipes are distributed in a winding manner. This application has the effects that the fractionated material is not easy to flow back and the protection effect is good.

Description

Technical Field

[0001] This application relates to the technical field of petrochemical industry, and particularly relates to a winding type multi-level flow splitting device. Background Art

[0002] A fractionating tower is a tower-shaped vapor-liquid device for distillation, also known as a distillation tower. It mainly utilizes the property that each component in the mixture has different volatilities, that is, the vapor pressures of each component are different at the same temperature, and separates the mixture through sequential separation.

[0003] There are two main types of fractionating towers: plate towers and packed towers. During the separation process of either type of fractionating tower, the gas is prone to condense and reflux, resulting in poor fractionation effect. Summary of the Invention

[0004] Aiming at the deficiencies of the existing technology, the purpose of this application is to provide a winding type multi-level flow splitting device.

[0005] The above application purpose of this application is achieved through the following technical solutions:

[0006] A winding type multi-level flow splitting device, comprising: a tower body, the interior of the tower body is hollow, and several distillation layers are arranged inside the tower body. Each distillation layer is connected with a distillation pipe and a heat conduction pipe. Each distillation pipe is arranged in a spiral shape and is distributed in a winding manner.

[0007] Furthermore, each heat conduction pipe is arranged in a spiral shape and is distributed in a winding manner.

[0008] Furthermore, the projection of each distillation pipe in the vertical direction is in a sine curve shape. The amplitudes and phases of the distillation pipes connected to the same distillation layer are the same, and the amplitudes of the distillation pipes connected to different distillation layers are different, while the phases are the same.

[0009] Furthermore, the projection of each heat conduction pipe in the vertical direction is in a sine curve shape. The amplitudes and phases of the heat conduction pipes connected to the same distillation layer are the same, and the amplitudes of the heat conduction pipes connected to different distillation layers are different, while the phases are the same.

[0010] Furthermore, the distillation pipes and the heat conduction pipes connected to the same distillation layer are mutually attached.

[0011] Furthermore, the distillation layers are located at the lower part of the tower body and are arranged sequentially in the vertical direction, and the temperature of the distillation layers gradually increases from top to bottom.

[0012] Furthermore, a temperature control plate is placed in each distillation layer, and the temperature control plate is connected to the heat conduction pipe.

[0013] Further, the tower body has a liquid feed inlet and a liquid feed outlet. The liquid feed inlet is opened on the distillation layer at the highest position, and the liquid feed outlet is opened on the distillation layer at the lowest position.

[0014] Further, the upper end of the tower body has a detachable maintenance cover, and the maintenance cover is flange-connected to the tower body.

[0015] In summary, the present application includes at least one of the following beneficial technical effects:

[0016] 1. The distillation tube is set in a spiral or winding shape. First, it is not easy to have backflow, and at the same time, the protection effect is good. The part with the highest temperature is inside, and the external pipe is like a heat preservation layer, and the internal pipe is like a heating source, thus forming a virtuous cycle.

[0017] 2. The heat conduction tube is set in a spiral shape. The spiral structure itself is compact, and the unit volume has a large heat transfer area. And it can conduct heat transfer in multiple distillation layers at the same time, greatly improving the efficiency. This structure directly breaks the shackles of the traditional fractional distillation method of extracting one substance at a time.

[0018] 3. During the process from bottom to top of the distillation tube, the temperature should gradually decrease. The temperature of the heat conduction tube gradually decreases from top to bottom. The distillation tube and the heat conduction tube connecting the same distillation layer are mutually attached. Therefore, the heat conduction tube and the distillation tube can just complement each other. The heat conduction tube always keeps the distillation tube in a heating state. The temperature of the distillation tube is relatively high relative to the cavity. Therefore, the distillation tube can also reduce the heat loss of the heat conduction tube. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 is the overall structural schematic diagram of an embodiment of a winding type multi-level shunt device of the present application;

[0020] Figure 2 is the overall structural schematic diagram of another embodiment of a winding type multi-level shunt device of the present application;

[0021] Figure 3 is the schematic diagram of the distillation tube and the heat conduction tube of a winding type multi-level shunt device of the present application being attached;

[0022] REFERENCE SIGNS:

[0023] 1. Tower body; 11. Liquid feed inlet; 12. Liquid feed outlet; 13. Maintenance cover;

[0024] 2. Distillation layer; 21. Heating layer; 211. Temperature control plate; 22. Transition layer; 23. Baffle; 231. Liquid passing port;

[0025] 3. Distillation tube; 31. Negative pressure device; 32. Discharge pipe;

[0026] 4. Heat transfer pipe; 41. Heat engine; 42. Air intake pipe. DETAILED DESCRIPTION

[0027] The present application is further described in detail below in conjunction with the accompanying drawings.

[0028] See also Figure 1 , is a winding multi-layer flow dividing device disclosed in the embodiment of the present application, comprising a tower body 1, the tower body 1 is hollow inside, a plurality of distillation layers 2 are arranged in the tower body 1, each distillation layer 2 is connected to a distillation tube 3 and a heat conducting tube 4, each distillation tube 3 is arranged in a spiral shape, and the distillation tubes 3 are arranged in a winding manner. It should be understood that, as Figure 1 As shown, the distillation tubes 3 in different distillation layers 2 are staggered and spiraled, as shown in FIG. Figure 1 From the perspective shown, the distillation tubes 3 are intertwined with each other.

[0029] The tower body 1 has a feed liquid inlet 11 and a feed liquid outlet 12 . The feed liquid inlet 11 is opened at the distillation layer 2 located at the highest position, and the feed liquid outlet 12 is opened at the distillation layer 2 located at the lowest position.

[0030] In order to facilitate the inspection and maintenance of the multi-level flow diversion device, a detachable inspection cover 13 is provided at the upper end of the tower body 1, and the inspection cover 13 is connected to the tower body 1 through a flange.

[0031] Furthermore, the projection of each distillation tube 3 along the vertical direction is in the shape of a sine curve. The distillation tubes 3 connected to the same distillation layer 2 have consistent amplitudes and phases, while the distillation tubes 3 connected to different distillation layers 2 have inconsistent amplitudes but consistent phases.

[0032] The structure of the heat pipe 4 is similar to that of the distillation pipe 3. Each heat pipe 4 is arranged in a spiral shape and is distributed in a winding manner. At the same time, the projection of each heat pipe 4 along the vertical direction is in the shape of a sine curve. The heat pipes 4 connected to the same distillation layer 2 have the same amplitude and phase, while the heat pipes 4 connected to different distillation layers 2 have different amplitudes but the same phase.

[0033] The distillation tube 3 and the heat-conducting tube 4 can be made of hard materials such as metal tubes, etc., and can be installed clockwise or counterclockwise from the inside to the outside during installation.

[0034] As another specific embodiment of a winding multi-layer flow dividing device provided by the application, please refer to Figure 2 as well as Figure 3, the distillation pipes 3 connected to the same distillation layer 2 and the heat conduction pipes 4 are in mutual contact, that is, the distillation pipes 3 can be generally understood as the sine curves formed by the projections of the distillation pipes 3 and the heat conduction pipes 4 connected to the same distillation layer 2 coinciding. Without considering heat loss, the temperature at any position on the pipeline of each heat conduction pipe 4 or each distillation pipe 3 is the same. In the actual process, during the upward movement of the distillation pipe 3, the temperature should gradually decrease, and the temperature of the heat conduction pipe 4 gradually decreases from top to bottom. Therefore, the heat conduction pipe 4 and the distillation pipe 3 can just complement each other. The heat conduction pipe 4 always keeps the distillation pipe 3 in a heated state. The temperature of the distillation pipe 3 is relatively high relative to the cavity, so the distillation pipe 3 can also reduce the heat loss of the heat conduction pipe 4.

[0035] At the same time, the spiral structure itself is compact, has a large heat transfer area per unit volume, and can conduct heat transfer for multiple distillation layers 2 simultaneously, greatly improving the efficiency. This structure directly breaks the shackles of the traditional fractional distillation method of extracting one substance at a time.

[0036] It should be understood that a negative pressure device 31 is connected to the upper end of the distillation pipe 3. The negative pressure device 31 sucks up the distillation gas. The negative pressure device 31 is connected to a number of discharge pipes 32. The number of the discharge pipes 32 is the same as the number of the distillation layers 2. The fractionated gas is sent out through the discharge pipes 32.

[0037] The upper end of the heat conduction pipe 4 is connected to a heat engine 41. The heat engine 41 provides a hot gas source for the heat conduction pipe 4. The upper end of the heat engine 41 is connected to a number of intake pipes 42. The number of the intake pipes 42 is the same as the number of the distillation layers 2. The external gas passes through the feed pipe and then is heated by the heat engine 41 to form a hot air source.

[0038] The following is a further introduction in combination with a specific usage scenario. The distillation layers 2 are located at the lower part of the tower body 1 and are arranged in sequence along the vertical direction. Figure 1 and Figure 2 In the illustrated embodiment, the distillation layers 2 are set to three layers. This is only for illustrative purposes, and the number can be adjusted according to the actual situation. The amplitudes of the distillation pipes 3 located inside are 1 / 4 and 1 / 2 of the amplitude of the outermost distillation pipe 3 in sequence from inside to outside. This design makes the installation process relatively convenient and has a better temperature maintenance effect at the same time.

[0039] The distillation layer 2 has a heating layer 21 and a transition layer 22. A temperature control plate 211 is placed in the heating layer 21. The temperature control plate 211 is connected to the heat conduction pipe 4. All layers are separated by baffles 23. Liquid passing ports 231 are opened on the baffles 23 to facilitate the flow of the mixture solution.

[0040] The heating layer 21 heats the mixture through the temperature control plate 211. The fractionated mixture flows to the overplating layer. When the mixture is in the overplating layer, the overplating layer acts like a heat insulation layer at this time, and at the same time reduces the mutual interference between the heating layers 21.

[0041] The temperature of the heating layer 21 gradually increases from top to bottom. During use, due to the winding distribution of the distillation tube 3, it is not easy to reflux at first, and at the same time, the protection effect is good. The highest temperature is inside, the external pipeline is like a heat insulation layer, and the internal pipeline is like a heating source, thus forming a virtuous cycle.

[0042] The embodiments of the specific implementation manners are all preferred embodiments of the present application, and do not limit the protection scope of the present application accordingly. Therefore, all equivalent changes made according to the structure, shape, and principle of the present application should be covered within the protection scope of the present application.

Claims

1. A winding type multi-level flow splitting device, characterized in that, Comprising: A tower body (1), the interior of the tower body (1) is hollow, and a number of distillation layers (2) are arranged inside the tower body (1). Each distillation layer (2) is connected to a distillation pipe (3) and a heat conduction pipe (4), and the distillation pipe (3) and the heat conduction pipe (4) connected to the same distillation layer (2) are mutually attached; Each distillation pipe (3) is arranged in a spiral shape, the distillation pipes (3) are arranged in a winding manner, and the projection of each distillation pipe (3) in the vertical direction is in a sine curve shape. The amplitudes and phases of the distillation pipes (3) connected to the same distillation layer (2) are the same, and the amplitudes of the distillation pipes (3) connected to different distillation layers (2) are different, but the phases are the same; Each heat conduction pipe (4) is arranged in a spiral shape, the heat conduction pipes (4) are arranged in a winding manner, and the projection of each heat conduction pipe (4) in the vertical direction is in a sine curve shape. The amplitudes and phases of the heat conduction pipes (4) connected to the same distillation layer (2) are the same, and the amplitudes of the heat conduction pipes (4) connected to different distillation layers (2) are different, but the phases are the same; The distillation layers (2) are located at the lower part of the tower body (1) and are arranged in sequence in the vertical direction, and the temperature of the distillation layers (2) gradually increases from top to bottom. The amplitude of the distillation pipe (3) connected to the lower distillation layer (2) is smaller and is more centered in arrangement, and the temperature of each heat conduction pipe (4) gradually decreases from top to bottom.

2. The winding type multi-level flow splitting device according to claim 1, wherein: A temperature control plate (211) is placed in each distillation layer (2), and the temperature control plate (211) is connected to the heat conduction pipe (4).

3. The winding type multi-level flow splitting device according to claim 1, characterized in that: The tower body (1) has a feed liquid inlet (11) and a feed liquid outlet (12). The feed liquid inlet (11) is opened on the distillation layer (2) at the highest position, and the feed liquid outlet (12) is opened on the distillation layer (2) at the lowest position.

4. A winding multi-level flow splitting device according to claim 1, characterized in that: The upper end of the tower body (1) has a detachable maintenance cover (13), and the maintenance cover (13) is flange-connected to the tower body (1).

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