Hybrid coil reactor

Abstract

The utility model discloses a mixed coil reactor, which belongs to the technical field of chemical equipment, and comprises a shell, a liquid mixer is arranged in the central pipe; a reaction liquid inlet is formed in the lower end of the central pipe; the upper end of the central pipe is connected with a bidirectional flow device; the bidirectional flow device is connected with a mixing cylinder; the multiple coil pipes are arranged, and the coil pipes are sequentially connected. The problems that in the prior art, a mixing structure is adopted for mixing before reaction liquid enters a reactor, the external space needs to be occupied, and the mixing effect is poor are solved.

Description

Technical Field

[0001] The utility model relates to the technical field of chemical equipment, in particular to a hybrid coil reactor. Background Art

[0002] The statements herein merely provide background art related to the present invention and do not necessarily constitute prior art.

[0003] Reactors are often used in chemical reaction processes. Tubular reactors are particularly suitable for reactions with large thermal effects due to their small size and large specific surface area. They can also achieve precise control of residence time and are suitable for continuous operation.

[0004] Tubular reactors have various forms, such as shell-and-tube and U-shaped tube. Existing tubular reactors often have some problems, such as short reaction time and difficult temperature control in shell-and-tube reactors; fluid short circuits in U-shaped tube reactors are unfavorable for heat transfer; and the inside of the tube is difficult to clean.

[0005] In the chemical production process, the reaction raw materials need to be fully mixed. The existing technology often adopts the method of setting a mixing structure outside the reactor to achieve the mixing of liquid raw materials, which increases the space occupied by the equipment. If a better mixing effect is required, the mixing structure occupies a large space. If the size of the mixing structure is reduced, the mixing effect is often not good. Moreover, if the solubility between the raw materials is low, the dispersion becomes worse after entering the reactor, and even stratification occurs, which reduces production efficiency. Utility Model Content

[0006] In view of the deficiencies in the prior art, the purpose of the embodiments of the utility model is to provide a hybrid coil reactor, which at least solves the problem of occupying external space for mixing reaction liquids in existing chemical production.

[0007] In order to achieve the above purpose, the embodiment of the utility model provides the following technical solutions:

[0008] A hybrid coil reactor, comprising:

[0009] Shell; a central tube is arranged in the shell, a liquid mixer is arranged in the central tube, a reaction liquid inlet is arranged at the lower end of the central tube, a two-way flow device is connected to the upper end of the central tube, the two-way flow device is connected to the mixing cylinder, and the mixing cylinder is connected to the coil; a plurality of coils are arranged, and the coils are connected in sequence.

[0010] The utility model builds a liquid mixer into the reactor and cleverly utilizes the central tube of the feed in the reactor to achieve mixing of the reaction raw material liquids without occupying external space. A two-way flow device and a mixing cylinder are also arranged downstream of the mixer to further mix the reaction liquid and further disperse the dispersed liquid evenly.

[0011] In some embodiments, a plurality of coils are fixed at equal intervals on the outside of a central tube, and each coil is fixedly supported on the central tube by a fixed support member.

[0012] In some embodiments, adjacent coils are connected via flanges, the mixing cylinder is connected to the uppermost coil via flanges, and the center pipe is connected to the bidirectional flow device via flanges.

[0013] In some embodiments, each coil includes a plurality of semicircular tubes, the semicircular tubes are connected in sequence, and adjacent semicircular tubes are connected via flanges.

[0014] In some embodiments, a liquid flow dividing member is provided between the bidirectional flow device and the mixing cylinder.

[0015] In some embodiments, the liquid diverter is a porous structure, a central hole is arranged at the center of the liquid diverter, and a plurality of side holes are arranged around the central hole, and the reaction liquid passes through the holes of the liquid diverter for further mixing.

[0016] In some embodiments, the liquid mixer includes a fixed shaft having a continuous helically wound fin fixed thereto.

[0017] In some embodiments, four liquid mixers are disposed in the central tube, and the four liquid mixers are distributed in a circumferential array in the central tube.

[0018] In some embodiments, grilles are provided at both the upper and lower ends of the central tube, namely an upper grille and a lower grille, and the fixed shaft is fixed by the two grilles.

[0019] In some embodiments, the length of the fixed shaft is greater than the distance between the upper grid and the lower grid.

[0020] One or more technical solutions provided in the embodiments of the present utility model have at least the following technical effects or advantages:

[0021] 1. In chemical process production, before the reaction raw materials enter the reactor for reaction, a mixing structure is often set outside the reactor to fully mix the chemical raw materials. The utility model sets multiple mixing structures in the reactor to mix the chemical raw materials multiple times, which not only improves the uniformity of the dispersion of the chemical raw materials and the reaction efficiency, but also saves the space occupied by the equipment and reduces the running distance of the mixed reaction liquid in the pipeline before reaching the optimal reaction conditions.

[0022] 2. The utility model fills the shell with heat exchange medium and adopts kettle heating so that the pipes through which the reaction liquid flows are in direct contact with the heat exchange medium. The reaction liquid can react when it enters the central tube for mixing, and reacts continuously when it flows through the two-way flow structure and the coil, thereby shortening the reaction time in production.

[0023] 3. The utility model adopts flange connection to form a coiled tube. The detachable design of the semicircular tube body solves the shortcoming of the traditional coiled tube that it is difficult to clean, and has great practical significance. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] The drawings in the specification, which constitute a part of the present invention, are used to provide a further understanding of the present invention. The illustrative embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation on the present invention.

[0025] Figure 1 This is a front view of a hybrid coil reactor provided by an embodiment of the utility model;

[0026] Figure 2 It is a top view of a hybrid coil reactor provided by an embodiment of the utility model;

[0027] Figure 3 It is a structural schematic diagram of a bidirectional flow device provided by an embodiment of the utility model;

[0028] Figure 4 It is a structural schematic diagram of the coil flange provided by an embodiment of the utility model;

[0029] Figure 5 It is a structural schematic diagram of a liquid mixer provided by an embodiment of the utility model;

[0030] Figure 6 It is a structural schematic diagram of the grille provided by an embodiment of the utility model;

[0031] Figure 7 It is a schematic diagram of the structure of the liquid diverter provided in the embodiment of the utility model;

[0032] In the figure: 1. Shell; 101. Upper head; 102. Heating cylinder; 103. Lower head; 2. Center tube; 21. Reaction liquid inlet; 3. Nozzle flange; 4. Two-way flow device; 41. Two-way flow tube; 42. Two-way flow flange; 5. Mixing cylinder; 6. Coil; 7. Fixed support; 8. Coil flange; 9. Liquid mixer; 91. Fixed shaft; 92. Fins; 10. Grid; 11. Liquid diverter; 111. Center hole; 112. Side hole.

[0033] In order to show the positions of various parts, the distances or sizes between them are exaggerated and the schematic diagram is for reference only. DETAILED DESCRIPTION

[0034] It should be noted that the following detailed descriptions are all illustrative and are intended to provide further explanation of the present invention. Unless otherwise specified, all technical and scientific terms used in the present invention have the same meanings as those commonly understood by those skilled in the art to which the present invention belongs.

[0035] As introduced in the background technology, in chemical process production, before the reaction raw materials enter the reactor for reaction, it is often necessary to fully mix the chemical raw materials. The existing technology often uses a mixing structure to mix the reaction liquid before it enters the reactor. The mixing structure needs to occupy external space, and after mixing, it needs to be transported to the reactor through a long pipeline distance, and the dispersion uniformity of the reaction liquid is reduced. In order to solve the above technical problems, the utility model proposes a hybrid coil reactor.

[0036] like Figure 1 As shown, a hybrid coil reactor is described in one embodiment of the utility model, comprising: a shell 1, the shell 1 comprises an upper head 101, a heating cylinder 102 and a lower head 103 connected in sequence from top to bottom, and the upper head 101, the heating cylinder 102 and the lower head 103 are connected by flange sealing. A central tube 2 is arranged in the axial direction in the shell 1. A reaction liquid inlet 21 is arranged at the lower end of the central tube 2, and the reaction liquid inlet 21 opens on the lower head 103 of the shell 1. The upper end of the central tube 2 is connected to a two-way flow device 4, the two-way flow device 4 is connected to a mixing cylinder 5, and the mixing cylinder 5 is connected to a coil 6.

[0037] like Figure 2 , Figure 5 As shown, a plurality of liquid mixers 9 are arranged in the axial direction in the central tube 2, and the liquid mixers 9 include a fixed shaft 91 and fins 92 continuously spirally wrapped around the fixed shaft 91, and the fixed shaft 91 and the fins 92 wrapped around the fixed shaft 91 are arranged in one piece; the liquid mixers 9 are arranged in the central tube 2, and the materials are mixed by arranging the mixers in the central tube 2, and the materials can be mixed without arranging an external mixer. Preferably, the liquid mixers 9 are arranged in four, and the four liquid mixers 9 are distributed in a circular array in the central tube 2.

[0038] like Figure 6 As shown, grids 10 are further provided at the upper and lower ends of the central tube 2, namely, an upper grid and a lower grid, and the length of the fixed shaft 91 is greater than the distance between the upper and lower grids, and the fixed shaft 91 is fixed in the central tube 2 through the upper and lower grids 10. At the same time, grids 10 are provided at the upper and lower ends of the central tube, and the grids 10 cause the fluid to fork into small streams of fluid, which collide and mix after passing through the grids 10, thereby further mixing the reaction liquid.

[0039] like Figure 1 , Figure 4 As shown, the upper end of the central tube 2 is connected to one end of the bidirectional flow device 4 pipeline through the pipe flange 3, and the other end of the bidirectional flow device 4 is connected to the mixing cylinder 5; the bidirectional flow device 4 is two pipelines that are not connected to each other.

[0040] The mixing cylinder 5 includes a cylindrical structure and a conical structure, and the cylindrical structure and the conical structure are fixedly connected to form a channel for the reaction liquid to flow.

[0041] The bidirectional flow device 4 is connected to the cylindrical structure of the mixing cylinder 5, and the conical structure is connected to the uppermost coil 6 through a flange. Specifically, the conical structure is connected to the coil 6 through two 90° elbow flanges; or, the conical structure is directly connected to the pipeline through the flange, and the pipeline is then connected to the coil 6 through the flange. The coordinated use of the bidirectional flow device 4 and the mixing cylinder 5 first divides the fluid and then mixes it, thereby improving the dispersion uniformity of the fluid and improving the reaction efficiency.

[0042] like Figure 7 As shown, a liquid diverter 11 is arranged between the bidirectional flow device 4 and the mixing cylinder 5. Specifically, the liquid diverter 11 is arranged as a porous structure, a central hole 111 is arranged at the center of the liquid diverter 11, and a plurality of side holes 112 are evenly arranged around the central hole 111. The reaction liquid passes through the central hole 111 and the side holes 112 for further mixing. The porous structure of the liquid diverter 11 can make the fluid bifurcate into small streams of fluid, which pass through the porous structure orifice plate for collision and mixing, thereby achieving further uniform mixing of the fluid. More specifically, the diameter of the central hole 111 is preferably 40 mm, and the diameter of the side hole 112 is preferably 16 mm.

[0043] like Figure 1 As shown, a plurality of coils 6 are arranged on the central tube 2 at intervals up and down, the upper and lower coils 6 are connected by coil flanges 8, and adjacent coils 6 are arranged at equal intervals. A plurality of fixed supports 7 are arranged on the central tube 2, and the fixed supports 7 are fixed on the central tube 2, are evenly arranged around the central tube 2, and are in the same plane, so that the coils 6 are fixed on the central tube 2. The central tube 2 supports and fixes the coils 6, thereby increasing the structural stability. Preferably, the coils 6 are arranged in four layers.

[0044] like Figure 2 As shown, each coil 6 includes a plurality of semicircular tube bodies, flanges are provided at both ends of the semicircular tube bodies, and adjacent semicircular tube bodies are connected by flanges; specifically, the diameter of the semicircular tube body is 200mm-600mm, and each coil 6 is provided with 6-7 sections of semicircular tube bodies, and the fluid enters from the inlet of the coil 6, flows along the pipeline of the coil 6, and flows out from the outlet of the coil 6. Both ends of the coil 6 can be set as inlets or outlets according to actual conditions, and the outlet of the lowest coil 6 opens on the housing 1. The coil 6 is designed as a detachable semicircular tube body connected by flanges, so that the coil can be disassembled, which is convenient for pipeline cleaning, and solves the problem that traditional coils are difficult to clean.

[0045] The heating cylinder 102 is cylindrical, and the upper head 101 and the lower head 103 are semicircular, which is conducive to the formation of vortexes by the hot fluid, thereby accelerating the heat transfer efficiency of the heat exchange medium in the shell 1.

[0046] The hybrid coil 6 reactor is made of stainless steel, and the devices and components can be connected by flange bolts, which is the existing technology.

[0047] A heating device is arranged on the outer side of the shell 1 for heating the shell 1 and the heat exchange medium. This is the prior art and can be adjusted according to actual conditions.

[0048] Before use, the shell 1 of the reactor is filled with a heat exchange medium, such as molten salt or heat transfer oil, and the heat exchange medium is heated by a heating device. When in use, the reaction raw materials are injected into the central tube 2 through the reaction liquid inlet 21 of the central tube 2, and the reaction liquid flows upward through the central tube 2. When the liquid flows through the liquid mixer 9, the fins 92 break up and mix the liquid, thereby achieving the initial mixing of the reaction liquid. When the reaction liquid flows through the two-way flow device 4, the liquid is divided into two streams of liquid. The two streams of liquid reach the mixing cylinder 5 and are mixed again. The reaction liquid is further mixed, and the reaction liquid continues to flow through the coil 6. The heat exchange medium in the shell 1 heats the reaction liquid through the coil 6, so that the reaction liquid reaches a predetermined temperature and reacts quickly. The reaction liquid passes through four coils 6 in sequence and finally flows out from the outlet of the lowest coil 6.

[0049] Although the above describes the specific implementation methods of the utility model in combination with the accompanying drawings, it is not intended to limit the scope of protection of the utility model. Technical personnel in the relevant field should understand that on the basis of the technical solution of the utility model, various modifications or deformations that can be made by technical personnel in this field without creative work are still within the scope of protection of the utility model.

Claims

1. A hybrid coil reactor, characterized in that: include: case; A central tube is arranged in the shell, a liquid mixer is arranged in the central tube, a reaction liquid inlet is arranged at the lower end of the central tube, a two-way flow device is connected to the upper end of the central tube, the two-way flow device is connected to the mixing cylinder, and the mixing cylinder is connected to the coil; a plurality of coils are arranged, and the coils are connected in sequence.

2. The hybrid coil reactor according to claim 1, characterized in that: A plurality of coils are fixed at equal intervals on the outside of the central tube, and each coil is fixedly supported on the central tube by a fixed support member.

3. The hybrid coil reactor according to claim 2, characterized in that: Adjacent coils are connected via flanges, the mixing cylinder is connected to the uppermost coil via flanges, and the center tube is connected to the bidirectional flow device via flanges.

4. The hybrid coil reactor according to claim 1, characterized in that: Each coil includes a plurality of semicircular tube bodies, which are connected in sequence, and adjacent semicircular tube bodies are connected via flanges.

5. The hybrid coil reactor according to claim 1, characterized in that: A liquid flow dividing piece is arranged between the bidirectional flow device and the mixing cylinder.

6. The hybrid coil reactor according to claim 5, characterized in that: The liquid diverter is a porous structure, a central hole is arranged at the center of the liquid diverter, and a plurality of side holes are arranged around the central hole. The reaction liquid passes through the holes of the liquid diverter for further mixing.

7. The hybrid coil reactor according to claim 1, characterized in that: The liquid mixer comprises a fixed shaft, on which continuous spirally wound fins are fixed.

8. The hybrid coil reactor according to claim 7, characterized in that: Four liquid mixers are arranged in the central tube, and the four liquid mixers are distributed in a circular array in the central tube.

9. The hybrid coil reactor according to claim 7, characterized in that: Grids are arranged at the upper end and the lower end of the central tube, which are respectively an upper grid and a lower grid, and the fixed shaft is fixed by the two grids.

10. The hybrid coil reactor according to claim 9, characterized in that: The length of the fixed shaft is greater than the distance between the upper grille and the lower grille.

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