Rotational flow tubular reactor

Abstract

The invention discloses a cyclone tubular reactor which is characterized in that a horizontally extending water inlet cyclone tube body and at least one reaction tube body are arranged in parallel at intervals from top to bottom, one end of the water inlet cyclone tube body and one end of the reaction tube body are provided with a water inlet pipe, and the other end of the water inlet cyclone tube body and the other end of the reaction tube body are provided with a water outlet pipe; the water outlet pipe of the water inlet rotational flow pipe body is communicated with the water inlet pipe of the adjacent reaction pipeline below the water inlet rotational flow pipe body, the water outlet pipe of the upper reaction pipe body is communicated with the water inlet pipe of the adjacent reaction pipeline below the water inlet rotational flow pipe body, and the water inlet rotational flow pipe body and the reaction pipe bodies are sequentially communicated to form a zigzag liquid runner; the stirring machine is used for carrying out rotational flow stirring on liquid in the water inlet rotational flow pipe body, so that the liquid in the water inlet rotational flow pipe body and the reaction pipe bodies flows forwards in a rotational flow state, and the chemical adding device is used for adding chemicals to each reaction pipe body. Therefore, the common problems of solid deposition and particle accumulation in the traditional tubular reactor are avoided.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of wastewater treatment, in particular to a cyclone tube reactor. BACKGROUND

[0002] In the field of sewage resource utilization, tubular reactors are a common type of reactor widely used in continuous reaction processes. The basic principle is to make the reactants react in a long, thin tube. The tube is usually equipped with temperature control devices, pressure regulation systems, and possibly catalyst beds to ensure that the reaction takes place under suitable conditions. The reactants flow through the tube, enter the reactor and come into contact with the catalyst (if any), undergo chemical reactions along the axial direction of the tube, and the final products flow out of the tube outlet.

[0003] According to the design of the reactor, tubular reactors can be divided into several types, including single-tube reactors and multi-tube reactors. The transverse flow pattern of the tubular reactor is usually plug flow, i.e. the fluid flows along the axial direction of the tube and maintains a relatively uniform flow rate at each point in time. Radial flow is usually in a laminar state, resulting in incomplete mixing between different layers of fluid, which can affect reaction rates and product distribution, especially in multi-component reactions and reactions that require high reaction rates.

[0004] However, there are some problems in traditional tubular crystallization reactors:

[0005] (1) Inhomogeneous heat transfer: due to the high flow rate of the reactants, the temperature distribution of the fluid in the tubular reactor often has local hot spots or cold spots, resulting in uneven reaction temperature, which in turn affects the selectivity and efficiency of the reaction;

[0006] (2) Particle accumulation problem: for solid catalysts or reactants containing solid particles, the design of the tubular reactor is difficult to effectively handle solid materials, especially at high flow rates or high solid concentrations, which can easily lead to particle accumulation or uneven flow;

[0007] (3) Flow assumptions do not match reality: tubular reactors usually assume that the fluid in the tube is in an ideal plug flow pattern, but in actual flow, due to differences in tube geometry and flow conditions, the residence time distribution of the fluid is often uneven, which can cause some reactants to overreact, while others do not fully react. SUMMARY

[0008] To overcome the above-mentioned defects, the present application provides a cyclone tube reactor which can avoid excessive dead zones or short flow areas, and avoid solid deposition and particle accumulation problems.

[0009] The technical scheme adopted by the present application to solve the technical problems is: a cyclone tube type reactor, comprising a water inlet cyclone tube body, a reaction tube body, a stirrer and a dosing device, the water inlet cyclone tube body and at least one reaction tube body are arranged in parallel and at intervals from top to bottom, and the water inlet cyclone tube body and the reaction tube body both extend horizontally, one end of the water inlet cyclone tube body and the reaction tube body is provided with a water inlet pipe, the other end of the water inlet cyclone tube body and the reaction tube body is provided with a water outlet pipe, the water outlet pipe of the water inlet cyclone tube body is communicated with the water inlet pipe of the adjacent reaction tube body below, the water outlet pipe of the upper reaction tube body is communicated with the water inlet pipe of the adjacent reaction tube body below, the water inlet cyclone tube body and the reaction tube bodies are sequentially communicated to form a meandering liquid flow channel, the stirrer is installed on the water inlet cyclone tube body, the stirring paddle of the stirrer extends into the water inlet cyclone tube body and performs cyclone stirring on the liquid in the water inlet cyclone tube body, so that the liquid in the water inlet cyclone tube body and the reaction tube body flows forward in a cyclone state, and the dosing device is communicated with each reaction tube body through a dosing pipeline to add the medicament to each reaction tube body.

[0010] As a further improvement of the present application, the water inlet cyclone tube body and the reaction tube body both comprise a circular tube structure main tube body and a hemispherical shell-shaped end head, the end head closes the other end of the main tube body of the water inlet cyclone tube body and the reaction tube body, and the water inlet pipe and the water outlet pipe are both arranged on the side wall of the other end of the main tube body.

[0011] As a further improvement of the present application, the stirring paddle of the stirrer rotates from left to right in the lower half of the main tube body of the water inlet cyclone tube body, the water inlet pipe is located on the upper side wall of one end of the main tube body and is tangent to the left side wall of the main tube body, and the water outlet pipe is located on the lower side wall of the other end of the main tube body and is tangent to the right side wall of the main tube body.

[0012] As a further improvement of the present application, one end of the main tube body of the water inlet cyclone tube body and the reaction tube body is provided with a mounting flange, the stirring motor of the stirrer is fixedly installed on the outside of one end of the main tube body of the water inlet cyclone tube body through the mounting flange, the stirring main shaft of the stirrer and the stirring paddle thereon extend into the main tube body of the water inlet cyclone tube body, and the dosing pipeline of the dosing device is communicated with one end of the main tube body of the reaction tube body through the mounting flange.

[0013] As a further improvement of the present application, the stirring main shaft of the stirrer is coaxially arranged with the main tube body.

[0014] As a further improvement of the present application, the end of the water inlet pipe and the water outlet pipe is provided with a connecting flange, and adjacent water inlet pipes and water outlet pipes are fixedly connected to form an integral whole through the connecting flanges at the ends thereof.

[0015] As a further improvement of the present application, the pipe diameter of the water inlet pipe and the water outlet pipe is consistent.

[0016] As a further improvement of the present application, the water inlet cyclone pipe body and the reaction pipe body are further provided with a quick emptying port at the middle position of the lower side wall, and a quick emptying pipe is installed on the quick emptying port, and a valve capable of opening or closing the quick emptying pipe is arranged in the quick emptying pipe.

[0017] As a further improvement of the present application, the end of the quick emptying pipe is provided with an end flange for connecting a discharge pipe.

[0018] The present application has the beneficial effects that: the present application introduces cyclone motion, so that the fluid can be better mixed in the radial and axial directions, so that the residence time distribution of the fluid in the pipe is more uniform, avoiding the excessive dead zone or short flow area that may occur in the traditional pipe reactor, and the solid particles can be better dispersed and flowed in the cyclone field, thereby avoiding the common problems of solid deposition and particle accumulation in the traditional pipe reactor. This improvement makes the cyclone pipe reactor have a wider application prospect in the fields of chemical reaction, pharmaceutical, environmental protection and the like. BRIEF DESCRIPTION OF DRAWINGS

[0019] Figure 1 is a perspective view of the present application;

[0020] Figure 2 is a front view of the present application;

[0021] Figure 3 is a perspective view of the water inlet cyclone pipe body of the present application provided with a stirrer;

[0022] Figure 4 is a front view of the water inlet cyclone pipe body of the present application provided with a stirrer;

[0023] Figure 5 is a front view of the water inlet cyclone pipe body and the reaction pipe body of the present application;

[0024] Figure 6 is Figure 5 is a sectional view in A-A direction;

[0025] Figure 7 is Figure 5 is a sectional view in B-B direction;

[0026] Figure 8 is Figure 5 is a sectional view in C-C direction. DETAILED DESCRIPTION

[0027] Embodiment: a cyclone tube reactor, comprising a water inlet cyclone tube body 1, a reaction tube body 2, a stirrer 3 and a dosing device, the water inlet cyclone tube body 1 and at least one reaction tube body 2 are arranged in parallel and spaced apart from top to bottom, and the water inlet cyclone tube body 1 and the reaction tube body 2 both extend horizontally, one end of the water inlet cyclone tube body 1 and the reaction tube body 2 is provided with a water inlet pipe 4, the other end of the water inlet cyclone tube body 1 and the reaction tube body 2 is provided with a water outlet pipe 5, the water outlet pipe 5 of the water inlet cyclone tube body 1 is communicated with the water inlet pipe 4 of the adjacent reaction tube body below, the water outlet pipe 5 of the upper reaction tube body 2 is communicated with the water inlet pipe 4 of the adjacent reaction tube body below, the water inlet cyclone tube body 1 and the reaction tube body 2 are sequentially communicated to form a meandering liquid flow channel, the stirrer 3 is installed on the water inlet cyclone tube body 1, the stirring paddle of the stirrer 3 extends into the water inlet cyclone tube body 1 and performs cyclone stirring on the liquid in the water inlet cyclone tube body 1, so that the liquid in the water inlet cyclone tube body 1 and the reaction tube body 2 flows forward in a cyclone state, the dosing device is communicated with each reaction tube body 2 through a dosing pipe to add reagent to each reaction tube body 2.

[0028] The cyclone tube reactor is composed of a plurality of single-section tube bodies, the water inlet cyclone tube body 1 serves as the first section tube body, the stirrer 3 is installed on the water inlet cyclone tube body 1, the liquid material enters from the water inlet pipe 4 at one end of the water inlet cyclone tube body 1, the stirring paddle of the stirrer 3 continuously rotates with the stirring shaft to perform cyclone stirring on the liquid in the water inlet cyclone tube body 1, the liquid flows in a cyclone manner towards the other end of the water inlet cyclone tube body 1, and finally flows out from the water outlet pipe 5 provided at the other end of the water inlet cyclone tube body 1, then the liquid enters the reaction tube body 2 through the water inlet pipe 4 of the reaction tube body 2, and still flows forward in a cyclone manner in the reaction tube body 2, reagent is added and reacted in each section reaction tube body 2, forming a multi-stage reagent adding form as a whole, the reacted liquid flows out from the water outlet pipe 5 of the last section reaction tube body 2, and when the liquid flows in the water inlet cyclone tube body 1 and the reaction tube body 2, the fluid is in a cyclone state in the cross section and in a plug flow state in the axial plane, if the liquid quantity in the water inlet cyclone tube body 1 and the reaction tube body 2 is not full, the liquid is subjected to cyclone stirring by the stirring paddle, which makes U-shaped reciprocating motion along the inner wall of the tube while pushing forward.

[0029] The water inlet cyclone tube body 1 and the reaction tube body 2 both comprise a circular tube structure of a main tube body 8 and a hemispherical shell-shaped end head 9, the end head closes the other end of the main tube body 8 of the water inlet cyclone tube body 1 and the reaction tube body 2, the water inlet pipe 4 and the water outlet pipe 5 are both arranged on the sidewall of the other end of the main tube body 8. The water inlet cyclone tube body 1 and the reaction tube body 2 adopt the same structure and can be shared, one end of the main tube body 8 is used for installing the stirrer 3 or the dosing device, the other end of the main tube body 8 is blocked by the hemispherical shell-shaped end head 9, the liquid reaching the other end of the main tube body 8 will not splash back and will enter the water outlet pipe 5 in a cyclone state.

[0030] When the stirring blade of the stirring machine 3 rotates from left to right in the lower half of the main pipe body 8 of the water inlet cyclone pipe body 1, the water inlet pipe 4 is located on the upper side wall of one end of the main pipe body 8, and the water inlet pipe 4 is tangent to the left side wall of the main pipe body 8, and the water outlet pipe 5 is located on the lower side wall of the other end of the main pipe body 8, and the water outlet pipe 5 is tangent to the right side wall of the main pipe body 8.

[0031] The water inlet pipe 4 and the water outlet pipe 5 are tangent to the main pipe body 8 in the direction of the cyclone, and the liquid entering the water inlet pipe 4 automatically flows forward along the side wall of the main pipe body 8 in the direction of the cyclone, and the liquid at the other end of the main pipe body 8 is directly discharged by the water outlet flow in the direction of the cyclone in the cyclone state. The arrangement of the water inlet pipe 4 and the water outlet pipe 5 ensures that the water inlet and water outlet are consistent with the flow direction of the liquid in the main pipe body 8, and there is no turbulence, which ensures that the liquid in the main pipe body 8 flows forward in a stable cyclone, and ensures that the liquid in each section of the main pipe body 8 is in the same cyclone state, avoiding the loss of cyclone force of the liquid in the subsequent main pipe.

[0032] The water inlet cyclone pipe body 1 and the main pipe body 8 of the reaction pipe body 2 are provided with mounting flanges 7 at one end, and the stirring motor of the stirring machine 3 is fixedly installed on the outside of one end of the main pipe body 8 of the water inlet cyclone pipe body 1 through the mounting flange 7. The stirring shaft and the stirring blade thereon of the stirring machine 3 extend into the main pipe body 8 of the water inlet cyclone pipe body 1, and the dosing pipe of the dosing device is communicated with one end of the main pipe body 8 of the reaction pipe body 2 through the mounting flange 7. The stirring machine 3 and the dosing pipe of the dosing device can be quickly and conveniently installed on one end of the main pipe body 8 of the water inlet cyclone pipe body 1 and the reaction pipe body 2 through the mounting flange 7, and are used for cyclone stirring of the liquid in the water inlet cyclone pipe body 1 and dosing reaction of the liquid in the reaction pipe body 2.

[0033] The stirring shaft of the stirring machine 3 is coaxially arranged with the main pipe body 8. The stirring shaft of the stirring machine 3 is coaxially arranged with the water inlet cyclone pipe body 1, so as to fully cyclone stir the liquid therein.

[0034] The end of the water inlet pipe 4 and the water outlet pipe 5 is provided with a connecting flange 6, and adjacent water inlet pipes 4 and water outlet pipes 5 are fixedly connected to form an integral body through the connecting flanges 6 at the ends thereof. The connecting flanges 6 are used to connect adjacent water inlet pipes 4 and water outlet pipes 5 together, and the connection is convenient, and the number of reaction pipe bodies 2 can be designed according to needs.

[0035] The pipe diameter of the water inlet pipe 4 and the water outlet pipe 5 is consistent, so as to ensure the stability of the flow rate of the water flow.

[0036] The water inlet cyclone pipe body 1 and the reaction pipe body 2 are further provided with a quick emptying port at the middle position of the lower side wall, and a quick emptying pipe 10 is installed on the quick emptying port, and a valve capable of opening or closing the quick emptying pipe 10 is arranged in the quick emptying pipe 10. The valve can be a ball valve, and the quick emptying port can quickly discharge the liquid accumulated in the pipe body, so as to facilitate the maintenance and replacement of the pipe body.

[0037] The end of the rapid emptying pipe 10 is provided with an end flange 11 for connecting the discharge pipe, and the rapid emptying pipe 10 can be connected with the discharge pipe through the end flange 11 to rapidly discharge the liquid.

[0038] The working process of the present application is as follows: the water inlet pipe 4 is arranged on the side wall of one end of the water inlet cyclone pipe body 1 for water inlet; the mixer 3 is connected to one end of the main pipe body 8 of the water inlet cyclone pipe body 1 through the installation flange 7; the mixer 3 drives the stirring paddle through the motor, so that the liquid in the water inlet cyclone pipe body 1 and the liquid in the reaction pipe body 2 are in the rotational flow state on the cross section and in the plug flow state on the plane; the liquid flow direction from the water inlet pipe 4 into the main pipe body 8 is consistent with the rotation direction of the stirring paddle of the mixer 3, and the liquid flow direction in the device flows from the water inlet end to the water outlet end in the rotational flow mode, which ensures the uniform mixing of the water inlet and the material added therein, avoids the solid deposition and particle accumulation, and makes the mixed fluid enter the next section in the plug flow mode to continue the reaction.

Claims

1. A cyclonic tube reactor characterized by: The device comprises a water inlet cyclone pipe body (1), a reaction pipe body (2), a stirrer (3) and a dosing device, the water inlet cyclone pipe body and at least one reaction pipe body are arranged in parallel and spaced apart from top to bottom, and the water inlet cyclone pipe body and the reaction pipe body extend horizontally, one end of the water inlet cyclone pipe body and the reaction pipe body is provided with a water inlet pipe (4), the other end of the water inlet cyclone pipe body and the reaction pipe body is provided with a water outlet pipe (5), the water outlet pipe of the water inlet cyclone pipe body is communicated with the water inlet pipe of the adjacent reaction pipe body below, the water outlet pipe of the upper reaction pipe body is communicated with the water inlet pipe of the adjacent reaction pipe body below, the water inlet cyclone pipe body and the reaction pipe bodies are sequentially communicated to form a meandering liquid flow channel, the stirrer is installed on the water inlet cyclone pipe body, the stirring paddle of the stirrer extends into the water inlet cyclone pipe body and performs cyclone stirring on the liquid in the water inlet cyclone pipe body, so that the liquid in the water inlet cyclone pipe body and the reaction pipe body flows forward in a cyclone state, and the dosing device is communicated with each reaction pipe body through a dosing pipeline to add reagents to each reaction pipe body.

2. The cyclonic tube reactor according to claim 1, characterized in that: The water inlet cyclone pipe body and the reaction pipe body each comprise a circular pipe structure, which is a main pipe body (8) and a hemispherical shell-shaped end head (9), the end head closes the other end of the main pipe body of the water inlet cyclone pipe body and the reaction pipe body, and the water inlet pipe and the water outlet pipe are arranged on the side wall of the other end of the main pipe body.

3. The cyclonic tube reactor according to claim 2, characterized in that: The stirring paddle of the stirrer rotates from left to right in the lower half of the main pipe body of the water inlet cyclone pipe body, the water inlet pipe is arranged on the upper side wall of one end of the main pipe body and is tangent to the left side wall of the main pipe body, and the water outlet pipe is arranged on the lower side wall of the other end of the main pipe body and is tangent to the right side wall of the main pipe body.

4. The cyclonic tube reactor according to claim 2, characterized in that: One end of the main pipe body of the water inlet cyclone pipe body and the reaction pipe body is provided with a mounting flange (7), the stirring motor of the stirrer is fixedly installed on the outside of one end of the main pipe body of the water inlet cyclone pipe body through the mounting flange, the stirring main shaft and the stirring paddle thereon of the stirrer extend into the main pipe body of the water inlet cyclone pipe body, and the dosing pipeline of the dosing device is communicated with one end of the main pipe body of the reaction pipe body through the mounting flange.

5. The cyclonic tube reactor according to claim 4, characterized in that: The stirring main shaft of the stirrer is coaxially arranged with the main pipe body.

6. The cyclonic tube reactor according to claim 1, characterized in that: The end of the water inlet pipe and the water outlet pipe is provided with a connecting flange (6), and adjacent water inlet pipes and water outlet pipes are fixedly connected to form an integral whole through the connecting flanges at the ends thereof.

7. The cyclonic tube reactor according to claim 1, characterized in that: The pipe diameter of the water inlet pipe and the water outlet pipe is consistent.

8. The cyclonic tube reactor according to claim 1, characterized in that: A quick emptying port is further arranged at the middle position of the lower side wall of the water inlet cyclone pipe body and the reaction pipe body, a quick emptying pipe (10) is installed on the quick emptying port, and a valve capable of opening or closing the quick emptying pipe is arranged in the quick emptying pipe.

9. The cyclonic tube reactor according to claim 8, characterized in that: An end flange (11) for connecting a discharge pipeline is arranged at the end of the quick emptying pipe.

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