A tubular mixing reactor for producing isothiazolinone

Abstract

The present invention discloses a tubular mixing reactor for producing isothiazolinone in the technical field of tubular mixing reactors, comprising a tubular body, and also comprising an airflow column arranged in the middle of the inner cavity of the tubular body, the airflow is communicated with the inner cavity of the tubular body through the outer wall from one end of the inner cavity of the airflow column, a mixing piece is rotatably connected to the inner wall of the tubular body, an air outlet of the airflow column is arranged at one end of the tubular body, and a transmission mechanism connected to the mixing piece is arranged at the air outlet. By installing the airflow column in the tubular body, it is possible to achieve full mixing of the reaction materials through the porous output of the airflow and the blowing of the reaction materials by multiple airflow points during the transportation of the reaction materials, and at the same time, under the action of the airflow, the external mixing cylinder drives the reaction materials to perform operations such as turning the materials, which greatly improves the ability of the materials required for mixed reaction in the production of isothiazolinone to fully carry out mixed reaction, and the production process is easy to control, reduces energy consumption, and improves production efficiency and the safety factor of the production process.

Description

Technical Field

[0001] The invention relates to the technical field of tubular mixing reactors, in particular to a tubular mixing reactor for producing isothiazolinone. Background Art

[0002] Industrial fungicides refer to preparations used in the industrial field to kill or inhibit the growth of microorganisms. Bactericides, antibacterial agents, preservatives, mildew inhibitors, algaecides, etc. used in industry are all called industrial fungicides. 3-isothiazolinone compounds are a high-efficiency spectrum industrial fungicide with the advantages of high efficiency, broad spectrum, low toxicity, and natural degradation in the environment, and have a very wide range of applications.

[0003] As the pipeline type continuous production method of a 3-isothiazolinone compound of publication number CN110483438A, thioamide compounds, catalysts, solvents and chlorine are mixed and reacted by a pipeline reactor system, and the 3-isothiazolinone compound is obtained by post-processing after the reaction is completed. However, the isothiazolinone inside the tubular mixing reactor used in the above-mentioned production process has low mixing efficiency, poor reaction effect, and short effective reaction time, which has an adverse effect on the yield and reaction result of the reaction. In order to achieve effective reaction time, the length of the mixing section must be lengthened to increase the liquid residence time, which also causes the volume of the mixer to increase and the investment to increase. Summary of the invention

[0004] The purpose of this section is to summarize some aspects of the embodiments of the present invention and briefly introduce some preferred embodiments. Some simplifications or omissions may be made in this section and the specification abstract and the invention title of the present invention to avoid blurring the purpose of this section, the specification abstract and the invention title, and such simplifications or omissions cannot be used to limit the scope of the present invention.

[0005] Therefore, the object of the present invention is to provide a tubular mixing reactor for producing isothiazolinone, which can realize operations such as turning the reaction materials through porous air flow output and external mixing cylinder during the transportation of reaction materials, thereby greatly improving the ability of materials required for mixed reaction in the production of isothiazolinone to fully undergo mixed reaction.

[0006] In order to solve the above technical problems, the present invention provides a tubular mixing reactor for producing isothiazolinone, which adopts the following technical scheme: it includes a tube body and an airflow column arranged in the middle of the inner cavity of the tube body, the airflow is connected to the inner cavity of the tube body through the outer wall from one end of the inner cavity of the airflow column, a mixing element is rotatably connected to the inner wall of the tube body, an air outlet of the airflow column is provided at one end of the tube body, and a transmission mechanism that is transmission-connected to the mixing element is provided at the air outlet.

[0007] Optionally, a feed port and a discharge port are respectively provided at both ends of the tube body, the air inlet end of the airflow column is located on the feed port side, and the air outlet is located on the discharge port side.

[0008] By adopting the above technical solution, the reaction materials will flow from the feed port to the discharge port side following the direction of the air flow, so that the reaction materials are mixed and reacted while being transported.

[0009] Optionally, the outer wall of the tube body is coated with a temperature-controlling interlayer.

[0010] By adopting the above technical solution, constant temperature control is achieved, thereby achieving the efficiency of the mixing reaction of isothiazolinone in the tube body through temperature control.

[0011] Optionally, the airflow column member includes a hollow cylinder coaxially arranged with the tube body, a plurality of air outlet holes are evenly distributed on the outer wall of the hollow cylinder, and a plurality of spoilers are evenly distributed on the inner wall of the hollow cylinder.

[0012] By adopting the above technical solution, the porous outflow of the airflow is achieved, so as to mix and react the reaction materials located between the tube body and the hollow column.

[0013] Optionally, the mixing element includes a mixing cylinder, which is rotatably connected to the inner wall of the tube body via a ball bearing, and an inner gear ring is embedded in one end of the mixing cylinder, which is connected to the transmission mechanism via the inner gear ring.

[0014] By adopting the above technical solution, the rotation of the inner gear ring will drive the mixing barrel located on the inner wall of the tube body to rotate, so that the reaction material located between the tube body and the hollow cylinder can be turned over and moved forward.

[0015] Optionally, a plurality of guide plates are fixed to the inner wall of the mixing cylinder, and the guide plates are arranged so that the air outlet holes are inclined toward the air outlet.

[0016] By adopting the above technical solution, the guide plate can guide the gas discharged from the central control column, and can stir and mix the reaction materials when the mixing barrel rotates.

[0017] Optionally, one end of the tube body is provided with multiple air outlets, and the multiple air outlets are arranged in a ring shape with the axis of the airflow column. The transmission mechanism includes a rotating shaft plugged into the air outlet at one end of the tube body, one end of the rotating shaft is provided with fan blades, and the other end of the rotating shaft is sleeved with a driving gear, and the driving gears at the multiple air outlets are all meshed and connected with the inner gear ring.

[0018] By adopting the above technical solution, electric drive is realized, energy is saved, and a mechanical structure is adopted, which has a long service life, low cost and easy maintenance.

[0019] Optionally, a material blocking filter plate is sleeved on one side of one end of the airflow column close to the discharge port, and the transmission mechanism is arranged between the material blocking filter plate and the air outlet.

[0020] By adopting the above technical solution, the material retaining filter plate can discharge the mixed reaction materials through the discharge port, while the airflow is discharged through the material retaining filter plate, and the action of the transmission mechanism is realized at the same time.

[0021] In summary, the present invention includes at least one of the following beneficial effects:

[0022] By building airflow columns into the tube body, it is possible to achieve sufficient mixing of the reaction materials through the multi-hole output of the airflow and the blowing of the reaction materials at multiple points of airflow during the transportation of the reaction materials. At the same time, under the action of the airflow, the external mixing cylinder drives the reaction materials to perform operations such as turning the materials, which greatly improves the ability of the materials required for mixed reaction in the production of isothiazolinone to be fully mixed, makes the production process easy to control, reduces energy consumption, and improves production efficiency and the safety factor of the production process. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings required for describing the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other accompanying drawings can be obtained based on these accompanying drawings without paying creative work.

[0024] Figure 1 It is a schematic diagram of the structure of the present invention;

[0025] Figure 2 for Figure 1 Schematic diagram of the internal structure;

[0026] Figure 3 It is a schematic diagram of the structure of the airflow column of the present invention;

[0027] Figure 4 This is an enlarged structural diagram of part A of the present invention.

[0028] Explanation of the reference numerals: 1. tube body; 101. feed inlet; 102. discharge outlet; 2. air flow column; 201. hollow cylinder; 202. air outlet; 203. spoiler; 3. mixing element; 301. mixing barrel; 302. ball bearing; 303. inner gear ring; 304. guide plate; 4. air outlet; 5. temperature control interlayer; 6. rotating shaft; 7. fan blade; 8. driving gear; 9. material blocking filter plate. DETAILED DESCRIPTION

[0029] The following is combined with Figure 1-4 The present invention is described in further detail.

[0030] Embodiment 1

[0031] Reference Figure 1-Figure 2 The present invention discloses a tubular mixing reactor for producing isothiazolinone, comprising a tube body 1, which is a container for conveying isothiazolinone and performing a tubular mixing reaction thereon. An airflow column 2 is arranged in the middle of the inner cavity of the tube body 1, and the airflow column 2 is used to introduce airflow to drive the isothiazolinone mixed reaction materials entering the tube body 1 from one end to enter and then be discharged from the other end after a mixing reaction. The airflow is connected with the inner cavity of the tube body 1 through the outer wall from one end of the inner cavity of the airflow column 2, and the airflow flows into the tube body 1 and the airflow column 2 through the airflow column 2, so that a plurality of areas for airflow to disperse the isothiazolinone mixed reaction materials can be formed, so that the materials entering the tube body 1 can flow in the tube body 1 and be in a mixed state under the action of the airflow throughout the whole process, wherein a feed port 101 and a discharge port 102 are respectively arranged at both ends of the tube body 1, the air inlet end of the airflow column 2 is located on the side of the feed port 101, and the air outlet 4 is located on the side of the discharge port 102. The reaction materials will flow from the feed port 101 to the discharge port 102 side following the direction of the air flow, so that the reaction materials are mixed and reacted while being transported. Figure 3 The airflow column 2 includes a hollow cylinder 201 coaxially arranged with the tube body 1, a plurality of air outlet holes 202 are evenly distributed on the outer wall of the hollow cylinder 201, and a plurality of spoilers 203 are evenly distributed on the inner wall of the hollow cylinder 201. The airflow column 2 can allow the airflow to flow along the inside of the hollow cylinder 201, and through the plurality of air outlet holes 202 on the outer wall, the flowing reaction materials can be kept in a state of being broken up by the airflow, thereby achieving sufficient mixing. Under the action of the spoiler 203, the airflow will be broken up, so that the airflow can be discharged from the plurality of air outlet holes 202.

[0032] In order to further improve the mixing uniformity of the isothiazolinone mixed reaction materials in the tube body, a mixing element 3 is rotatably connected to the inner wall of the tube body 1, and the mixing element 3 includes a mixing barrel 301, and the mixing barrel 301 is rotatably connected to the inner wall of the tube body 1 through a ball 302. An inner gear ring 303 is embedded in one end of the mixing barrel 301, and the inner gear ring 303 is connected to the transmission mechanism. Under the transmission action of the transmission mechanism and the inner gear ring 303, the mixing barrel 301 will rotate in the tube body 1, so that the reaction materials introduced into the tube body 1 are turned over, and the materials at the bottom of the tube body 1 will be turned over to the top, so as to achieve a full mixing reaction of the materials.

[0033] One end of the tube body 1 is provided with an air outlet 4 of the airflow column 2, and the airflow passing through the airflow column 2 will finally be discharged through the air outlet 4. One end of the tube body 1 is provided with multiple air outlets 4, and the multiple air outlets 4 are arranged in a ring shape with the axis of the airflow column 2. A transmission mechanism connected to the mixing element 3 is provided at the air outlet 4. Figure 4The transmission mechanism includes a rotating shaft 6 plugged into the air outlet 4 at one end of the tube body 1, a fan blade 7 is provided at one end of the rotating shaft 6, and a driving gear 8 is sleeved on the other end of the rotating shaft 6. The driving gears 8 at multiple air outlets 4 are all meshed and connected with the inner gear ring 303. By installing the rotating shaft 6 with fan blades 7 at the air outlet 4, the rotating shaft 6 can be driven to rotate by the rotation of the fan blades 7 when the airflow is discharged, thereby realizing the rotation of the driving gear 8, and realizing the rotation of the mixing barrel 301 through the inner gear ring 303, realizing electric drive, saving energy, adopting a mechanical structure, long service life, low cost, and easy maintenance.

[0034] The outer wall of the tube body 1 is coated with a temperature control interlayer 5, and a gas or solution for controlling the reaction temperature of the isothiazolinone mixed material can be introduced into the temperature control interlayer 5. The dynamic flow of the gas or solution in the temperature control interlayer 5 is realized by an external constant temperature control device to realize constant temperature control, thereby realizing the efficiency of the mixed reaction of isothiazolinone in the tube body 1 through temperature control. The production process is easy to control, reduces energy consumption, and improves production efficiency and the safety factor of the production process. A material blocking filter plate 9 is sleeved on one side of the end of the airflow column 2 close to the discharge port 102, and the transmission mechanism is arranged between the material blocking filter plate 9 and the air outlet 4. The material blocking filter plate 9 can be arranged to prevent the mixed reaction material from entering the transmission mechanism. The material blocking filter plate 9 can discharge the mixed reaction material through the discharge port 102, and the airflow is discharged through the material blocking filter plate 9, and the action of the transmission mechanism is realized at the same time.

[0035] Working principle: the materials required for the mixed reaction of producing isothiazolinone are put into the tube body 1 through the feed port 101, and the airflow is introduced into the airflow column 2 to drive the reaction materials in the tube body 1 to be transported along the length direction of the tube body 1. The airflow entering the airflow column 2 will enter between the tube body 1 and the hollow column 201 under the action of the air outlet 202, so as to realize the porous outflow of the airflow, so as to mix and react the reaction materials between the tube body 1 and the hollow column 201. The airflow is introduced from one end and then discharged through the air outlet 4. When the airflow is discharged from multiple air outlets 4, it will drive the fan blades 7 Rotation, each fan blade 7 drives multiple driving gears 8 to rotate clockwise or counterclockwise through the rotating shaft 6 to drive the external inner gear ring 303 to rotate. The rotation of the inner gear ring 303 will drive the mixing barrel 301 located on the inner wall of the tube body 1 to rotate, so that the reaction material located between the tube body 1 and the hollow cylinder 201 can be turned over and forward. The present invention can realize the operation of turning the reaction material through the porous output of the airflow and the external mixing barrel 301 in the process of conveying the reaction material, which greatly improves the ability of the materials required for mixed reaction in the production of isothiazolinone to fully carry out the mixing reaction.

[0036] Embodiment 2

[0037] Reference Figure 2Based on the same concept as the first embodiment, the tubular mixing reactor for producing isothiazolinone further includes a plurality of guide plates 304 fixed to the inner wall of the mixing barrel 301, and the guide plates 304 are arranged so that the gas outlet 202 is inclined toward the gas outlet 4. The guide plates 304 can guide the gas discharged from the central control column 201, and can stir and mix the reaction materials when the mixing barrel 301 rotates.

[0038] The above are all preferred embodiments of the present invention, and are not intended to limit the protection scope of the present invention. Therefore, any equivalent changes made based on the structure, shape, and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A tubular mixing reactor for producing isothiazolinone, comprising a tubular body (1), characterized in that: It also comprises an airflow column (2) arranged in the middle of the inner cavity of the tube body (1), the airflow is communicated with the inner cavity of the tube body (1) through the outer wall from one end of the inner cavity of the airflow column (2), a mixing element (3) is rotatably connected to the inner wall of the tube body (1), an air outlet (4) of the airflow column (2) is arranged at one end of the tube body (1), and a transmission mechanism is arranged at the air outlet (4) and is transmission-connected to the mixing element (3); The mixing element (3) comprises a mixing cylinder (301), wherein the mixing cylinder (301) is rotatably connected to the inner wall of the tube body (1) via a ball bearing (302), an inner gear ring (303) is embedded in one end of the mixing cylinder (301), and the mixing cylinder (301) is connected to a transmission mechanism via the inner gear ring (303); a plurality of guide plates (304) are fixed to the inner wall of the mixing cylinder (301), and the guide plates (304) are arranged so that the air outlet hole (202) is inclined toward the air outlet (4); a plurality of air outlets (4) are provided at one end of the tube body (1), and the plurality of air outlets (4) are connected to the inner wall of the mixing cylinder (301). The axis of the airflow column (2) is arranged in a ring shape, and the transmission mechanism includes a rotating shaft (6) inserted at one end of the tube body (1) at the air outlet (4), one end of the rotating shaft (6) is provided with a fan blade (7), and the other end of the rotating shaft (6) is sleeved with a driving gear (8), and the driving gears (8) at multiple air outlets (4) are all meshed and connected with the inner gear ring (303); a material blocking filter plate (9) is sleeved on one side of one end of the airflow column (2) close to the discharge port (102), and the transmission mechanism is arranged between the material blocking filter plate (9) and the air outlet (4).

2. A tubular mixing reactor for producing isothiazolinone according to claim 1, characterized in that: The two ends of the tube body (1) are respectively provided with a feed port (101) and a discharge port (102); the air inlet end of the airflow column (2) is located on the side of the feed port (101), and the air outlet (4) is located on the side of the discharge port (102).

3. A tubular mixing reactor for producing isothiazolinone according to claim 1, characterized in that: The outer wall of the tube body (1) is coated with a temperature-controlling interlayer (5).

4. A tubular mixing reactor for producing isothiazolinone according to claim 1 or 2, characterized in that: The airflow column (2) comprises a hollow column (201) arranged coaxially with the tube body (1), a plurality of air outlet holes (202) are evenly distributed on the outer wall of the hollow column (201), and a plurality of spoilers (203) are evenly distributed on the inner wall of the hollow column (201).

Images