Plug flow type solid-liquid medium reaction pipeline

Abstract

The invention discloses a plug flow type solid-liquid medium reaction pipeline, and belongs to the technical field of reaction pipelines, the plug flow type solid-liquid medium reaction pipeline comprises a feeding main pipe which is connected with a liquid feeding pipe and a solid feeding pipe, the flow guide direction of the feeding main pipe is X, the included angle between X and the gravity direction G is a1, and a1 is smaller than 10 degrees; a stirring motor is arranged at the upper end of the feeding main pipe and connected with a stirring shaft, a plurality of stirring blades and a plug flow reaction pipe are arranged on the axial surface of the stirring shaft, a catalyst is attached to the inner wall of the plug flow reaction pipe, the plug direction of the plug flow reaction pipe is Z, and Z is parallel to the horizontal direction; the bypass pipe comprises an inlet end and an outlet end, and the inlet end and the outlet end are respectively communicated with the feeding main pipe and the plug flow reaction pipe; wherein the inlet end of the main feeding pipe is located on the side wall of the main feeding pipe and faces the stirring blades, the axis of the inlet end and the axis of the outlet end form an included angle b, and b is larger than or equal to 90 degrees. The device can effectively avoid backflow.

Description

Technical Field

[0001] The present invention belongs to the technical field of reaction pipelines, and more specifically, relates to a plug-flow type solid-liquid medium reaction pipeline. Background Art

[0002] A tubular reactor is a continuously operated reactor that is tubular and has a large aspect ratio. This type of reactor can be very long, such as the reactor tube length of propylene dimerization, which is measured in kilometers. The reactor structure can be a single tube or multiple tubes in parallel; it can be an empty tube, such as a tubular cracking furnace, or a filled tube filled with granular catalyst to carry out a multi-phase catalytic reaction, such as a tubular fixed bed reactor. The flow of materials can be approximately regarded as a plug flow.

[0003] However, the tubular reactor in the related art often faces the situation of backflow, especially when processing some heterogeneous substances, especially solid-liquid mixtures, which will cause the internal reaction time to be uncontrollable and lead to some quality defects in the produced material.

[0004] For example, Chinese patent document (CN 105107442 B) provides an intelligent industrialized microchannel continuous reactor, which has a shell with a heat carrier inlet and a heat carrier outlet, a raw material inlet, a product outlet, a head sealed at both ends of the shell, and a reaction tube for reacting the reaction materials. The reaction tube is arranged in the shell, the inner cavity of the reaction tube is the tube side, the cavity between the shell and the reaction tube is the shell side, the raw material inlet and the product outlet are connected to the tube side, and the heat carrier inlet and the heat carrier outlet are connected to the shell side. It is characterized in that: a three-dimensional microchannel component is tightly inserted in the reaction tube, and a plurality of um / mm (micrometer or millimeter) micro-channels that are always connected are formed between the outer surface of the three-dimensional microchannel component and the inner wall of the reaction tube, and the micro-channels are formed in a concave manner on the outer surface of the three-dimensional microchannel component.

[0005] The device attempts to solve the reflux problem through a three-dimensional microchannel component. However, the microchannels within the component are prone to clogging, especially when dealing with solid-liquid mixtures. Basically, they need to be thoroughly cleaned after each use, which is very time-consuming and labor-intensive. At the same time, the component will also interfere with the internal medium. If you want to use the component without hindering the mixing of the internal medium, it needs to be customized as a whole, and its versatility is extremely low.

[0006] For another example, Chinese patent document (CN 103055792 B) provides a method for using an oscillating tubular reactor for liquid-phase oxidation of cyclohexane, wherein the internal reaction tube is composed of a vertically mounted circular tube, and baffles arranged in an orderly manner along the vertical direction are arranged inside the tube to divide the space inside the tube into a multi-chamber structure, and each chamber is equivalent to a fully mixed kettle reactor.

[0007] Although the above device can avoid the reflux problem to a certain extent, it is also difficult to apply to solid-liquid mixtures. The arrangement of the reaction tube makes it difficult to control the reaction time of the material during the falling process, especially when the medium is uneven, it is difficult to balance stirring and reaction.

[0008] For the above problems, the related technologies do not provide effective solutions. Summary of the invention

[0009] In order to solve the problems that may exist in the related art, some embodiments of the present application provide a plug flow solid-liquid medium reaction pipeline, including: a feed main pipe, connected to a liquid feed pipe and a solid feed pipe, the liquid feed pipe and the solid feed pipe are used to transport liquid medium and solid medium to the feed main pipe respectively; wherein the flow direction of the feed main pipe is X, the angle between X and the gravity direction G is a1, a1 <10°; the upper end of the feed main pipe is provided with a stirring motor, the stirring motor is connected to a stirring shaft, and the axial surface of the stirring shaft is arranged with a plurality of A stirring blade is used to mix the solid medium and the liquid medium in the feed main pipe; a plug flow reaction tube, the inner wall of which is attached with a catalyst, the plug flow reaction tube has a push direction of Z, and Z is parallel to the horizontal direction; a transfer tube, comprising an inlet end and an outlet end, the inlet end and the outlet end are respectively connected to the feed main pipe and the plug flow reaction tube; wherein the inlet end of the feed main pipe is located on the side wall of the feed main pipe, the inlet end faces the stirring blade, and the axis of the inlet end and the axis of the outlet end have an angle b, b≥90°.

[0010] Furthermore, the flow transfer tube includes a flow stabilizing portion and a flow expansion portion which are connected to each other, the inlet end serves as one end of the flow stabilizing portion, and the outlet end serves as one end of the flow expansion portion; the diameter of the flow stabilizing portion is always the same, and the diameter of the flow expansion portion gradually increases from one end to the outlet end.

[0011] Furthermore, the ratio of the length of the flow expansion portion to the total length of the diverter tube is between 1:3 and 1:2.

[0012] Furthermore, the ratio of the diameters of the outlet end to the inlet end is between 2:1 and 3:2.

[0013] Furthermore, a1≤8°, the feeding direction of the solid feeding pipe is Y1, the angle between Y1 and X is a2, and a2<5°.

[0014] Furthermore, it comprises a plurality of solid feed pipes arranged along the circumference of the feed main pipe, the solid feed pipes are staggered with the stirring motor, and Y1 intersects with the central axis of the stirring shaft.

[0015] Furthermore, the flow direction of the liquid feed pipe is Y2, the angle between Y2 and X is a3, and the value of a3 is 30-60°; Y2 intersects with the central axis of the stirring shaft.

[0016] Furthermore, it also includes a displacement kettle, a feeder and a feeder, wherein the displacement kettle, the feeder, the feeder and the solid feed pipe are connected in sequence; Furthermore, the displacement kettle is externally connected with a solid feeding device, and the solid feeding device is sealedly connected to the inlet of the displacement kettle.

[0017] Furthermore, the angle a1 between the flow direction X of the feed main pipe and the gravity direction G is 0, that is, the flow direction X is vertically downward.

[0018] Furthermore, one end of the plug flow reaction tube away from the transfer tube is connected to an output tube, at least a portion of the output tube is filled with a mixing core, and the axis of the output tube where the mixing core is located is a straight line.

[0019] Furthermore, the distance between the mixing core and the plug flow reaction tube is 0, so that the solid-liquid medium directly enters the mixing core after flowing out of the plug flow reaction tube.

[0020] Furthermore, the angle between the axis of the mixing core and the axis of the plug flow reaction tube is 180°.

[0021] Furthermore, it comprises a plurality of said transfer tubes connected in parallel with the feed main pipe, each of said transfer tubes is respectively connected to one of said plug flow reaction tubes, and each of said plug flow reaction tubes is respectively connected to one of said output pipes; wherein the inlet ends of all said transfer tubes are located on the side wall of the feed main pipe.

[0022] Furthermore, the push directions Z of all the plug flow reaction tubes are parallel to each other.

[0023] Furthermore, each of the transfer tubes is provided with a solenoid valve and a flow meter, and the solenoid valve is electrically connected to the flow meter to adjust the flow of the plug flow reaction tube.

[0024] Furthermore, the transfer tube is flange-connected to the plug flow reaction tube.

[0025] Furthermore, a temperature control component is provided outside the plug flow reaction tube, and the temperature control component is used to heat or cool the plug flow reaction tube so that the plug flow reaction tube meets the temperature conditions of the corresponding reaction.

[0026] Compared with the prior art, the technical solution provided by the present invention has the following beneficial effects: The flow direction X of the feed main pipe is not parallel or collinear with the push direction Z of the plug flow reaction tube, and the angle between X and G is less than 10°. The solid-liquid medium in the feed main pipe generates kinetic energy accumulation when flowing along the flow direction X, and will not flow back. The design of the inlet end of the deflection pipe facing the stirring blade makes it difficult for the solid-liquid medium to enter the deflection pipe and generate material accumulation. At the same time, because the deflection pipe is arranged between the feed main pipe and the plug flow reaction tube, the solid-liquid mixture after stirring and mixing will not directly enter the plug flow reaction tube. The kinetic energy of the solid-liquid medium can reach equilibrium before entering the plug flow reaction tube. The solid feed pipe and the plug flow reaction tube are staggered with each other, and the combined effect further avoids the backflow situation. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] The drawings constituting a part of this application are used to provide a further understanding of this application, so that other features, purposes and advantages of this application become more obvious. The schematic embodiment drawings and their descriptions of this application are used to explain this application and do not constitute an improper limitation on this application. In the drawings: Figure 1 This is a schematic diagram of a cross-sectional structure of a plug-flow solid-liquid medium reaction pipeline according to an embodiment of the present application; Figure 2 This is a schematic diagram of a plug-flow solid-liquid medium reaction pipeline structure according to an embodiment of the present application; Figure 3 This is a schematic diagram of the structure of a transfer tube of a plug-flow solid-liquid medium reaction pipeline according to an embodiment of the present application; Figure 4 This is a schematic diagram of a cross-sectional structure of a plug-flow solid-liquid medium reaction pipeline according to an embodiment of the present application; Figure 5 This is a schematic diagram of the matching structure of a transfer tube and a plug flow reaction tube of a plug flow solid-liquid medium reaction pipeline according to an embodiment of the present application; Figure 6 This is a schematic diagram of a partial structure of a plug-flow solid-liquid medium reaction pipeline according to an embodiment of the present application; Figure 7 This is a schematic diagram of the structure of a plug-flow solid-liquid medium reaction pipeline feed main pipe according to an embodiment of the present application; Figure 8 This is a schematic diagram of a partial structure of a plug-flow solid-liquid medium reaction pipeline according to an embodiment of the present application; Fig. 9 This is a schematic diagram of a plug-flow solid-liquid medium reaction pipeline structure according to an embodiment of the present application; Description of labels: 100, feed pipe; 110, liquid feed pipe; 120, solid feed pipe; 121, displacement kettle; 122, feeder; 123, feeder; 130, stirring motor; 140, stirring shaft; 150, stirring blade; 200. Plug flow reaction tube; 300, flow transfer tube; 300a, inlet end; 300b, outlet end; 310, flow stabilizing portion; 320, flow expanding portion; 400, output pipe; 410, mixing core. DETAILED DESCRIPTION

[0028] In order to enable those skilled in the art to better understand the solution of the present application, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the present application.

[0029] In the present application, the terms "upper", "lower", "left", "right", "front", "back", "top", "bottom", "inside", "outside", "middle", "vertical", "horizontal", "lateral", "longitudinal" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings. These terms are mainly intended to better describe the present application and its embodiments, and are not intended to limit the indicated devices, elements or components to have a specific orientation, or to be constructed and operated in a specific orientation. Moreover, in addition to being used to indicate orientation or positional relationships, some of the above terms may also be used to express other meanings. For example, the term "upper" may also be used to indicate a certain dependency or connection relationship in some cases. For those of ordinary skill in the art, the specific meanings of these terms in the present application can be understood according to the specific circumstances.

[0030] It is worth noting that the “flow diversion direction” in the present application refers to the flow diversion direction of the liquid in the corresponding tube body.

[0031] As an embodiment 1 of the present application, Figures 1 to 4 As shown, a plug flow solid-liquid medium reaction pipeline is provided, comprising a feed main pipe 100, a plug flow reaction tube 200 and a transfer tube 300. The solid-liquid medium can move forward in parallel along the movement direction in the plug flow reaction tube 200.

[0032] like Figure 2As shown, the feed main pipe 100 is connected to a liquid feed pipe 110 and a solid feed pipe 120, and the liquid feed pipe 110 and the solid feed pipe 120 are used to transport liquid medium and solid medium to the feed main pipe 100 respectively, and the liquid medium and the solid medium merge in the feed main pipe 100 to form a solid-liquid medium (solid-liquid mixture), wherein the flow direction of the feed main pipe 100 is X, and the angle between X and the gravity direction G is a1, a1<10°, when the solid-liquid mixture flows along X, part of its gravitational potential energy will be converted into kinetic energy, reducing the kinetic energy demand of the feed main pipe 100.

[0033] like Figure 1 , 4 As shown, a stirring motor 130 is disposed at the upper end of the feed main pipe 100 , and the stirring motor 130 is connected to a stirring shaft 140 . A plurality of stirring blades 150 are arranged on the axial surface of the stirring shaft 140 for mixing the solid medium and the liquid medium in the feed main pipe 100 .

[0034] In the related art, in the reaction system for solid-liquid media, the stirring blade 150 is usually arranged in a reaction tube sintered with a catalyst, so that the solid medium and the liquid medium react under the action of the catalyst while being stirred and mixed by the stirring blade 150. However, during the stirring process, the high shear force of the blade will cause the solid-liquid medium to produce a colloidal substance during the reaction, which adheres to the stirring paddle, making it time-consuming and laborious to clean. There is also a risk of reflux, which makes the reaction time uncontrollable and affects the product quality.

[0035] In the plug flow solid-liquid medium reaction pipeline of the present embodiment, no catalyst of any form is introduced into the feed main pipe 100. The solid medium and the liquid medium are fully mixed without reacting, and then enter the plug flow reaction tube 200 through the transfer tube 300, and then react under the action of the catalyst, thereby realizing dynamic and static separation, reducing the difficulty of maintenance and cleaning for users, and avoiding the reflux problem caused by the stirring blades 150 blocking the solid-liquid mixture in the reaction tube.

[0036] Specifically, a1 can be 0°, 5°, 8° or 9°, etc. The user can adjust the specific angle according to the setting environment to reasonably utilize the venue space.

[0037] A catalyst is attached to the inner wall of the plug flow reaction tube 200, and the solid-liquid medium reacts in the plug flow reaction tube 200. The plug flow direction of the plug flow reaction tube 200 is Z, which is parallel to the horizontal direction. The plug flow direction Z is the movement direction of the solid-liquid medium in the reactor.

[0038] Optionally, a temperature control component is disposed outside the plug flow reaction tube 200, and the temperature control component is used to heat or cool the plug flow reaction tube 200 so that the plug flow reaction tube 200 meets the temperature conditions of the corresponding reaction.

[0039] The transfer pipe 300 includes an inlet end 300a and an outlet end 300b, and the inlet end 300a and the outlet end 300b are respectively connected to the feed main pipe 100 and the plug flow reaction tube 200, so that the solid-liquid medium in the feed main pipe 100 enters the plug flow reactor through the transfer pipe 300. Specifically, the diameter of the inlet end 300a is consistent with that of the feed main pipe 100, and the diameter of the outlet end 300b is consistent with that of the plug flow reaction tube 200.

[0040] Among them, Figure 2 , 3 As shown, the inlet end 300a of the feed main pipe 100 is located on the side wall of the feed main pipe 100, and the inlet end 300a faces the stirring blade 150. The axis of the inlet end 300a and the axis of the outlet end 300b have an angle b, b≥90°, and b is preferably 90°. If b is greater than 90°, it will cause the solid-liquid medium to stagnate and reflux in the transfer pipe 300.

[0041] Since the stirring blade 150 can stir the solid-liquid mixture and limit its kinetic energy, Figure 4 As shown, the inlet end 300a faces the stirring blade 150, so that the solid-liquid mixture is sent into the transfer tube by the stirring blade 150. Specifically, the stirring shaft 140 extends to the bottom of the feed main pipe 100, and the transfer tube 300 is also located on the side of the bottom of the feed main pipe 100, so that the stirring shaft 140 can be opposite to the transfer tube 300 on its peripheral side.

[0042] As a comparative example, if the inlet end 300a is staggered with the stirring blade 150, the falling speed of the solid-liquid medium will increase after it leaves the stirring blade, and a jamming problem will occur at the end of the transfer tube 300. At the same time, after the solid-liquid medium leaves the stirring shaft 140, there will be basically no mixing, and the internal space of the feed main pipe 100 will not be fully utilized.

[0043] Specifically, the axis of the shunt tube 300 is a curve or a broken line. For example, the shunt tube 300 may be an L-shaped tube or an arc-shaped tube.

[0044] In this way, the flow direction X of the feed main pipe 100 is not parallel or collinear with the push direction Z of the plug flow reaction tube 200, and the angle between X and G is less than 10°. The solid-liquid medium in the feed main pipe 100 generates kinetic energy accumulation when flowing along the flow direction X. The design of the inlet end 300a of the deflection pipe 300 facing the stirring blade 150 also makes it difficult for the solid-liquid medium to accumulate when entering the deflection pipe 300. At the same time, because the deflection pipe 300 is arranged between the feed main pipe and the plug flow reaction tube, the kinetic energy of the solid-liquid medium can reach equilibrium before entering the plug flow reaction tube. The solid feed pipe 200 and the plug flow reaction tube 200 are staggered with each other, and the combined effect avoids the backflow situation.

[0045] Furthermore, there is an angle b between the flow direction X of the feed main pipe 100 and the push direction Z of the plug flow reaction tube 200, b is 90°, and the angle a1 between the flow direction X of the feed main pipe 100 and the gravity direction G is 0, that is, the flow direction X is vertically downward. The design structure is stable and can give full play to the potential energy advantage of the solid-liquid mixture.

[0046] As a preferred solution, Figure 5 As shown, the flow circulator 300 includes a flow stabilizer 310 and a flow expander 320 that are connected, the inlet end 300a is one end of the flow stabilizer 310, and the outlet end 300b is one end of the flow expander 320. The diameter of the flow stabilizer 310 is always the same, and the diameter of the flow expander 320 gradually increases from one end to the outlet end 300b. After the solid and liquid media enter the flow stabilizer 310 of the flow circulator, their kinetic energy is relatively balanced, and because the radial cross-section of the flow expander 320 is large, the solid and liquid media tend to be pushed toward the flow expander 320, further avoiding the retention of the solid and liquid media.

[0047] Preferably, the ratio of the length of the flow expansion section 320 to the total length of the diversion tube is between 1:3 and 1:2, and the flow expansion section 320 is limited within this range so that the flow stabilizing section 310 can better buffer the kinetic energy of the solid-liquid medium, thereby cooperating with the flow expansion section 320 to divert the flow.

[0048] More specifically, the diameter ratio of the outlet end 300a to the inlet end 300b is between 2:1 and 3:2. If the diameter difference between the outlet end 300a and the inlet end 300b is too large, the kinetic energy of the solid-liquid medium may fluctuate significantly in the transfer tube 300 .

[0049] As a specific solution, Figure 6 As shown, the plug-flow solid-liquid medium reaction pipeline of this embodiment also includes a displacement kettle 121, a discharger 122 and a feeder 123, and the displacement kettle 121, the discharger 122, the feeder 123 and the solid feed pipe 120 are connected in sequence.

[0050] Preferably, the displacement kettle 121 is externally connected with a solid feeding device, and the solid feeding device is sealedly connected to the inlet of the displacement kettle 121 to ensure the sealing of the solid entering the displacement kettle 121, so that the high-purity chemical solid is clean and stable in nature.

[0051] The feeder 123 may be a screw feeder 123 or an electromagnetic feeder 123 , and the electromagnetic feeder 123 is suitable for dry powder solid media.

[0052] In the above scheme, the working mode of the plug flow solid-liquid medium reaction pipeline is: the solid medium passes through the solid feeding device, enters the displacement kettle 121, is replaced with air, enters the feeder 123 through the discharger 122, and is sent into the feed main pipe 100. At this time, the liquid medium enters the feed main pipe 100, merges into a solid-liquid mixture, and then enters the plug flow reaction tube 200 for reaction.

[0053] As a feasible solution, the plug flow solid-liquid medium reaction pipeline of this embodiment, as part of the reaction system, can be connected to other solid-liquid separation devices, which can provide convenient conditions for subsequent solid-liquid separation to further control the water content of the output solid-liquid mixture slurry after reaction.

[0054] As the second embodiment of the present application, based on the first embodiment, the feeding forms of the liquid feed pipe 110 and the solid feed pipe 120 are specifically defined, wherein a1≤8°, for example, a1 is 2°, 3°, 4.5° or 8°, etc.

[0055] Optionally, the feeding direction of the solid feed pipe 120 is Y1, and the angle between Y1 and X is a2, a2<5°, so that Y1 is basically consistent with the direction of gravity. This design reduces the difficulty of feeding the solid medium, makes the solid medium fall more smoothly, and makes the solid medium kinetic energy larger.

[0056] Specifically, the solid feed pipe 120 is arranged at the top of the feed main pipe 100 and is close to or located at the central axis of the feed main pipe 100, so that the solid medium falls at the center position of the feed main pipe 100, reducing the wear of the pipe wall of the feed main pipe 100 by solid particles. At the same time, the position of the solid feed pipe 120 in the feed main pipe 100 will also reserve more space for the design of the liquid feed pipe 110.

[0057] Preferably, Figure 7 As shown, the plug flow solid-liquid medium reaction pipeline of this embodiment includes a plurality of solid feed pipes 120 arranged circumferentially along the feed main pipe 100. The top of the feed main pipe 100 has multiple feed points, and the uniformity is better.

[0058] Since the solid feed pipe 120 and the stirring motor 130 are staggered, Y1 intersects with the central axis of the stirring shaft 140, so that the solid medium is in a position that is easy to stir when it is dropped.

[0059] Furthermore, the flow direction of the liquid feed pipe 110 is Y2, and the angle between Y2 and X is a3, then a3 takes a value of 30~60°, for example, 35°, 40°, 45° or 55°, etc. Therefore, since the pressure of the liquid medium is easy to control, the liquid medium can enter the solid feed pipe 120 in a manner with a certain slope, so as to fully contact with the solid medium of the basic falling material.

[0060] Furthermore, the flow direction of the liquid feed pipe 110 is Y2, which intersects with the central axis of the stirring shaft, so as to facilitate synchronous stirring with the solid medium.

[0061] Preferably, there may be 2, 4 or 6 liquid feed pipes 110 , which are symmetrically arranged on the feed pipe 100 with the central axis of the feed pipe 100 as the symmetry line, so that the contact area between the solid medium and the liquid medium is increased, thereby achieving better fusion.

[0062] As the third embodiment of the present application, based on the first or second embodiment, as Figure 8 As shown, the end of the plug flow reaction tube 200 away from the transfer tube 300 is connected to the output tube 400, and at least a portion of the output tube 400 is filled with a mixing core 410. The mixing core 410 can make the solid-liquid medium after the reaction more uniform and improve the product quality. The axis of the output tube 400 where the mixing core 410 is located is a straight line, which is convenient for the assembly and maintenance of the mixing core 410. If the axis of the output tube 400 where the mixing core 410 is located is a straight line, the difficulty of installation is greatly increased.

[0063] The mixing core 410 is a unit composed of plate elements. The solid-liquid medium can flow in the output pipe 400 and impact the plate elements in the mixing core 410, thereby increasing the velocity gradient of the laminar flow of the solid-liquid medium or forming turbulence, completing "division-position movement-re-merge" and achieving further mixing of the solid and liquid.

[0064] Preferably, Figure 7 As shown, the distance between the mixing core 410 and the plug flow reaction tube 200 is 0, so that the solid-liquid medium flows out of the plug flow reaction tube 200 and directly enters the mixing core 410, which has an auxiliary effect on the reaction of the solid-liquid medium and can improve the reaction rate.

[0065] Furthermore, the angle between the axis of the mixing core 410 and the axis of the plug flow reaction tube 200 is 180°, and this angle may have a small error due to assembly reasons. This design can further ensure the smoothness of the solid-liquid medium output and avoid excessive loss of kinetic energy of the solid-liquid medium caused by the mixing core 410.

[0066] As the fourth embodiment of the present application, on the basis of the first, second or third embodiment, as Fig. 9 As shown, the plug flow solid-liquid medium reaction pipeline includes a plurality of transfer tubes 300 connected in parallel with the feed main pipe 100, each transfer tube 300 is respectively connected to a plug flow reaction tube 200, each plug flow reaction tube 200 is respectively connected to an output tube 400, and the solid-liquid medium after the reaction is completed is output from the output tube 400.

[0067] Specifically, the inlet ends 300 a of all the transfer pipes 300 are located on the side wall of the main feed pipe 100 .

[0068] Preferably, the push directions Z of all the plug flow reaction tubes 200 are parallel to each other, so as to increase the balance of the kinetic energy of the solid and liquid media in the plug flow reaction tubes 200 .

[0069] Optionally, a solenoid valve and a flow meter are provided in each transfer tube 300 , and the solenoid valve and the flow meter are electrically connected to adjust the flow of the plug flow reaction tube 200 so that the flow of the solid and liquid media in each transfer tube 300 is balanced.

[0070] Specifically, the transfer tube 300 is flange-connected to the plug flow reaction tube 200, so that the plug flow reaction tube 200 is easy to disassemble and maintain. At the same time, when one of the plug flow reaction tubes 200 needs to be maintained or replaced, the other plug flow reaction tube 200 can continue to work to maintain the effective operation of the system.

[0071] In this application, the terms "installed", "set", "provided with", "connected", "connected", and "socketed" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral structure; it can be a mechanical connection, or an electrical connection; it can be a direct connection, or an indirect connection through an intermediate medium, or it can be an internal connection between two devices, elements, or components. For those of ordinary skill in the art, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0072] The above are only preferred embodiments of the present application and are not intended to limit the present application. For those skilled in the art, the present application may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A plug flow solid-liquid medium reaction pipeline, characterized in that: include: A feed main pipe (100) is connected to a liquid feed pipe (110) and a solid feed pipe (120), wherein the liquid feed pipe (110) and the solid feed pipe (120) are used to transport a liquid medium and a solid medium to the feed main pipe (100) respectively; wherein the flow direction of the feed main pipe (100) is X, and the angle between X and the gravity direction G is a1, and a1 is less than 10°; a stirring motor (130) is arranged at the upper end of the feed main pipe (100), and the stirring motor (130) is connected to a stirring shaft (140), and a plurality of stirring blades (150) are arranged on the axial surface of the stirring shaft (140) for mixing the solid medium and the liquid medium in the feed main pipe (100); A plug flow reaction tube (200), the inner wall of which is attached with a catalyst, the plug flow reaction tube (200) has a push direction Z, and Z is parallel to the horizontal direction; The transfer pipe (300) comprises an inlet end (300a) and an outlet end (300b), wherein the inlet end (300a) and the outlet end (300b) are respectively connected to the feed main pipe (100) and the plug flow reaction pipe (200); The inlet end (300a) of the feed main pipe (100) is located on the side wall of the feed main pipe (100), the inlet end (300a) faces the stirring blade (150), and the axis of the inlet end (300a) and the axis of the outlet end (300b) have an angle b, b≥90°.

2. The plug-flow solid-liquid medium reaction pipeline according to claim 1, characterized in that: The flow transfer tube (300) comprises a flow stabilizing portion (310) and a flow expanding portion (320) which are connected to each other, the inlet end (300a) serving as one end of the flow stabilizing portion (310), and the outlet end (300b) serving as one end of the flow expanding portion (320); The diameter of the flow stabilizing portion (310) is always the same, and the diameter of the flow expanding portion (320) gradually increases from one end to the outlet end (300b).

3. The plug-flow solid-liquid medium reaction pipeline according to claim 2, characterized in that: The ratio of the length of the flow expansion portion (320) to the total length of the diverter tube (300) is between 1:3 and 1:

2.

4. The plug-flow solid-liquid medium reaction pipeline according to claim 3, characterized in that: The ratio of the diameters of the outlet end (300b) to the inlet end (300a) is between 2:1 and 3:

2.

5. The plug-flow solid-liquid medium reaction pipeline according to claim 1, characterized in that: a1≤8°, the feeding direction of the solid feeding pipe (120) is Y1, the angle between Y1 and X is a2, and a2<5°.

6. The plug-flow solid-liquid medium reaction pipeline according to claim 2, characterized in that: It comprises a plurality of solid feed pipes (120) arranged along the circumference of the feed main pipe (100), wherein the solid feed pipes (120) are staggered with the stirring motor (130), and Y1 intersects with the central axis of the stirring shaft (140).

7. The plug-flow solid-liquid medium reaction pipeline according to claim 6, characterized in that: The flow direction of the liquid feed pipe (110) is Y2, the angle between Y2 and X is a3, and a3 is 30-60 degrees; Y2 intersects with the central axis of the stirring shaft (140).

8. The plug-flow solid-liquid medium reaction pipeline according to claim 1, characterized in that: It also includes a displacement kettle (121), a feeder (122) and a feeder (123), wherein the displacement kettle (121), the feeder (122), the feeder (123) and the solid feed pipe (120) are sequentially connected.

9. The plug-flow solid-liquid medium reaction pipeline according to claim 8, characterized in that: The displacement kettle (121) is externally connected to a solid feeding device, and the solid feeding device is sealedly connected to the inlet of the displacement kettle (121).

10. The plug-flow solid-liquid medium reaction pipeline according to claim 1, characterized in that: The angle a1 between the flow direction X of the feed main pipe (100) and the gravity direction G is 0, that is, the flow direction X is vertically downward.

11. The plug-flow solid-liquid medium reaction pipeline according to claim 1, characterized in that: One end of the plug flow reaction tube (200) away from the transfer tube (300) is connected to an output tube (400), at least a portion of the output tube (400) is filled with a mixing core (410), and the axis of the output tube (400) where the mixing core (410) is located is a straight line.

12. The plug-flow solid-liquid medium reaction pipeline according to claim 11, characterized in that: The distance between the mixing core (410) and the plug flow reaction tube (200) is 0, so that the solid-liquid medium directly enters the mixing core (410) after flowing out of the plug flow reaction tube (200).

13. The plug-flow solid-liquid medium reaction pipeline according to claim 12, characterized in that: The angle between the axis of the mixing core (410) and the axis of the plug flow reaction tube (200) is 180°.

14. The plug-flow solid-liquid medium reaction pipeline according to claim 1, characterized in that: It comprises a plurality of transfer tubes (300) connected in parallel with the main feed tube (100), each of the transfer tubes (300) being connected to one of the plug flow reaction tubes (200), and each of the plug flow reaction tubes (200) being connected to one of the output tubes (400); The inlet ends (300a) of all the transfer pipes (300) are located on the side wall of the main feed pipe (100).

15. The plug-flow solid-liquid medium reaction pipeline according to claim 14, characterized in that: The push directions Z of all the plug flow reaction tubes (200) are parallel to each other.

16. The plug-flow solid-liquid medium reaction pipeline according to claim 14, characterized in that: A solenoid valve and a flow meter are arranged in each of the transfer tubes (300); the solenoid valve is electrically connected to the flow meter and is used to adjust the flow of the plug flow reaction tube (200).

17. The plug-flow solid-liquid medium reaction pipeline according to claim 14, characterized in that: The transfer tube (300) is flange-connected to the plug flow reaction tube (200).

Images