Synthesis reaction apparatus and method for preparing environmentally friendly flame retardant

Abstract

The application discloses a synthesis reaction equipment for preparing environment-friendly flame retardant, which comprises a box body arranged on the ground, an oscillatable sealing cover arranged on the upper portion of the box body, the sealing cover being in a closed state to form a seal for the box body, a heating assembly arranged in the box body and connected with the box body, the heating assembly dividing the internal cavity of the box body into an upper cavity and a lower cavity, a driving device arranged on the upper portion of the sealing cover and connected with the sealing cover, the output end of the driving device penetrating through the sealing cover and extending into the sealing cover, one end of the output end of the driving device extending into the cavity being provided with a stirring device capable of being driven to rotate by the driving device, and the stirring device and the output shaft of the driving device being coaxially arranged with the box body. The application can limit the position of raw materials and ensure that the raw materials are stably attached to the heating assembly during use, so that the melting speed of the raw materials is ensured, and the heating efficiency of the raw materials is ensured.

Description

Technical Field

[0001] This invention relates to the field of environmentally friendly flame retardant preparation technology, specifically to the synthetic reaction equipment and method for preparing environmentally friendly flame retardants. Background Technology

[0002] Environmentally friendly flame retardants refer to products that produce low smoke and low toxicity during use. Bio-based green flame retardants, in particular, are green products whose raw materials, production processes, use, and recycling are all environmentally friendly. The raw materials for bio-based flame retardants are mainly bio-based materials containing polyhydroxyl structures, such as lignin, starch, cellulose, chitosan, and cyclodextrin. These materials exhibit excellent char-forming properties at high temperatures and can serve as char sources for intumescent flame retardants. The flame-retardant effect of intumescent flame retardants mainly relies on the formation of a porous foamed coke layer on the material surface. This is a multiphase system containing solid, liquid, and gaseous products. The flame-retardant properties of the coke layer are mainly manifested in: making it difficult for heat to penetrate the condensed phase, preventing oxygen from entering the combustion zone, and preventing the gaseous or liquid products generated during degradation from overflowing from the material surface.

[0003] In the process of flame retardant preparation, the reaction mode varies depending on the type and structure of the flame retardant. The preparation and synthesis of flame retardants mainly includes: raw material storage tank, reaction vessel, separation device, purification device and finished product storage tank.

[0004] When flame retardants are heated and reacted inside the reactor, the heating time required varies depending on the size of the raw materials. The raw materials move within the molten liquid inside the reactor and cannot maintain stable contact with the heating source. Existing reactors can only perform simple stirring of the raw materials and cannot solve the problem of increased reaction time caused by excessively large raw materials. Summary of the Invention

[0005] One of the objectives of this invention is to provide a synthetic reaction apparatus and method for preparing environmentally friendly flame retardants. During the preparation of environmentally friendly flame retardants, it is possible to ensure that the raw materials are in stable contact with the heating source inside the synthetic reaction apparatus, thereby ensuring the heating efficiency of the raw materials.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a synthetic reaction apparatus for preparing environmentally friendly flame retardants, comprising: The box is placed on the ground, and a sealing cover that can be opened by swinging is installed on the top of it. When the sealing cover is closed, it forms a seal on the box. A heating element is located inside and connected to the housing, which divides the internal chamber of the housing into an upper chamber and a lower chamber. A drive device is located on the upper part of the sealing cover and connected to the sealing cover. The output end of the drive device passes through the sealing cover and extends into the inside of the sealing cover. One end of the drive device output end extending into the inside of the chamber is equipped with a stirring device that can be driven by the drive device to rotate. The stirring device and the output shaft of the drive device are both coaxially arranged with the box body. A positioning component is located at the end of the drive device and the distance between the positioning component and the inner wall of the chamber can be controlled by the stirring device. The circulation assembly is located outside the chamber and is arranged in a ring around the chamber.

[0007] In one or more embodiments of the present invention, the above-mentioned circulation component is connected to the chamber at both the top and bottom. The chamber is provided with a scraper that can move synchronously with the stirring device. The scraper is located inside the positioning component and is inclined. A connecting pipe is provided on the outside of the box body. The connecting pipe passes through the box body and extends into the inside of the box body.

[0008] In one or more embodiments of the present invention, the above-described stirring device includes: A rotating rod is coaxially arranged with the output end of the drive device. The height of the rotating rod is limited inside the housing and is connected to the output end of the drive device through a coupling. A protective plate is provided on the outside of the rotating rod. The protective plate is located inside the upper cavity and connected to the rotating rod. A stirring rod is located inside the lower chamber and connected to the rotating rod; the stirring rod is curved.

[0009] In one or more embodiments of the present invention, the above-described stirring device further includes: A positioning rod is telescopically inserted into the inner side of the rotating rod. The inner side of the rotating rod is provided with multiple independent connecting holes, which extend to the outer side of the positioning rod. The positioning rod contacts the inner wall of the connecting holes. An electromagnet is located on the lower part of the inner wall of the box. A sliding pressing plate is provided on the upper part of the electromagnet. The pressing plate is magnetically set, and the electromagnet forms a magnetic attraction with the pressing plate. The pressing plate extends into the interior of the connecting hole.

[0010] In one or more embodiments of the present invention, the positioning component described above includes: A threaded protrusion is located on the inner wall of the upper cavity, and the cross-section of the threaded protrusion is arc-shaped; A connecting frame is provided at one end of the positioning rod extending to the outside of the connecting hole. An arc-shaped plate is provided at the end of the connecting frame away from the positioning rod, and the arc-shaped plate forms a seal on the connecting frame. A clamping plate that can form a compression of the raw material is provided on the inner side of the connecting frame.

[0011] In one or more embodiments of the present invention, the positioning component further includes: The pressure plate is located inside the connecting frame. One end of the pressure plate away from the arc plate is provided with a compressible elastic element to support the pressure plate. A push rod is provided on the outside of the pressure plate. The two ends of the push rod are connected to the pressure plate and the clamping plate, respectively. The movement of the pressure plate drives the movement of the clamping plate through the push rod. The diaphragm is located inside the arc-shaped plate, and the arc-shaped plate is hollow at the position where the diaphragm is set, with the diaphragm attached to the pressure plate.

[0012] In one or more embodiments of the present invention, the above-described circulation component includes: A connecting cavity is located outside the chamber, with its bottom connected to the lower chamber and its upper part connected to the upper chamber. A push plate is located inside the communicating cavity. A top plate is provided on the upper part of the push plate. The top plate has the same shape as the push plate and can form a seal on the upper part of the communicating cavity.

[0013] In one or more embodiments of the present invention, the above-described circulation component further includes: A telescopic rod is fixed inside the box. The telescopic end of the telescopic rod is connected to the top plate and drives the top plate to move in height. One-way valves are provided on the inner sides of the top plate and the push plate, with the upper and lower parts of the one-way valves located on the inner sides of the top plate and the push plate, respectively. A sealing ring is located at the lower part of the connecting cavity. The sealing ring has a U-shaped cross-section and forms a seal between the lower part of the connecting cavity and the lower chamber. The end of the sealing ring facing away from the chamber protrudes outward to form a limiting protrusion, which can contact the push plate and the top plate.

[0014] This application also provides a method for preparing an environmentally friendly flame retardant, wherein the raw materials are subjected to a synthesis reaction using the aforementioned synthesis reaction equipment, and the method includes the following steps: S1. Screening and cleaning of raw materials: The raw materials used to prepare environmentally friendly flame retardants are added into the cleaning machine for cleaning. After that, the raw materials are taken out and dried. Then, the impurities in the raw materials are removed by the screening device and stored in the raw material storage box. S2. The raw materials are transported into the box and heated to melt. At the same time, the stirring device drives the positioning component to rotate and clamps the raw materials, so that the raw materials gradually melt near the heating component. The melted raw materials are mixed and stirred by the stirring and circulation components. S3. The mixed raw materials enter the separation device for distillation, extraction or filtration; S4. The raw materials after distillation, extraction or filtration are purified and modified, and then output to the finished product storage tank for storage.

[0015] In one or more embodiments of the present invention, the separation device includes a distillation column, an extraction column, and a filtration column, and the purification device includes a distillation column, a crystallization column, and a dryer.

[0016] Beneficial effects This invention provides a synthetic reaction apparatus and method for preparing environmentally friendly flame retardants. Compared with existing technologies, it has the following advantages: 1. This application restricts and compresses the position of the raw material, ensuring that the raw material is stably attached to the heating component during use, thereby ensuring the melting speed of the raw material and the heating efficiency of the raw material. During the heating process, the raw material can rotate inside the heating component, thereby ensuring stable heating of the raw material during movement.

[0017] 2. This application utilizes a stirring device capable of adjusting the position of the positioning component. During the stirring process, the position can be adjusted according to the different raw materials, thereby ensuring that different raw materials are clamped and fixed during use, so that the raw materials are stably attached to the position of the heating component, and multiple telescopic positions can be adjusted during use.

[0018] 3. The clamping plate used in this application can clamp and fix the raw material on both sides during use, ensuring the stability of the raw material during rotation. This prevents the raw material from falling off after being moved and re-entering the liquid, which would prevent the raw material from making stable contact with the heating component and affecting the melting efficiency of the raw material.

[0019] 4. This application incorporates a circulation component that allows the internal heated liquid to circulate during use. This ensures that the internal liquid circulates from bottom to top, thereby guaranteeing the mixing effect of the raw materials within the reaction equipment. Furthermore, the circulation of the internal liquid ensures that the liquid inside the chamber remains within a relatively stable temperature range. Attached Figure Description

[0020] Figure 1 This is a perspective view of the present invention; Figure 2 This is a schematic diagram of the structure for removing the sealing cap and sealing ring of the present invention; Figure 3 This is a cross-sectional view of the housing of the present invention; Figure 4 This is a planar sectional view of the box structure of the present invention; Figure 5 This is a schematic diagram of the internal structure of the present invention; Figure 6 This is a schematic diagram of the heating assembly of the present invention; Figure 7 This is a schematic diagram of the internal structure of the present invention without the heating component; Figure 8 This is a schematic diagram of the threaded protrusion structure of the present invention; Figure 9This is a schematic diagram of the stirring device of the present invention; Figure 10 This is a schematic diagram showing the position of the positioning component of the present invention; Figure 11 This is a top plan view of the internal structure of the positioning component of the present invention; Figure 12 This is a schematic diagram of the connecting hole structure of the present invention; Figure 13 This is a schematic diagram of the sealing ring structure of the present invention.

[0021] In the picture: 1. Box body; 2. Sealing cover; 21 Heating component, 22 Drive unit, 23 Connecting pipeline, 24 Stirring device, 25 Positioning component, 26 Scraper, 27 Circulation component; 241 Rotating rod, 242 Protective plate, 243 Positioning rod, 244 Connecting hole, 245 Electromagnet, 246 Extrusion plate, 247 Stirring rod; 251 Threaded protrusion, 252 Connecting bracket, 253 Arc plate, 254 Clamping plate, 255 Diaphragm, 256 Compression spring, 257 Pressure plate, 258 Push rod; 271 Connecting cavity, 272 Telescopic rod, 273 Push plate, 274 Sealing ring, 275 Limiting protrusion, 276 One-way valve, 277 Top plate. Detailed Implementation

[0022] The following describes several embodiments of the present invention with reference to the accompanying drawings. For clarity, many practical details will be described in the following description. However, it should be understood that these practical details are not intended to limit the invention. That is, in some embodiments of the invention, these practical details are not essential. Furthermore, for the sake of simplicity, some conventional structures and elements will be shown in the drawings in a simple schematic manner, and in all drawings, the same reference numerals will be used to denote the same or similar elements. And, where feasible, features of different embodiments can be interchanged.

[0023] Unless otherwise defined, all terms used herein (including technical and scientific terms) have their ordinary meanings, which are understandable to those skilled in the art. Furthermore, the definitions of the foregoing terms in commonly used dictionaries should be interpreted in the context of this specification as having the meaning consistent with the relevant field of this invention. Unless specifically defined, these terms will not be construed as having idealized or overly formal meanings.

[0024] Please see Figure 1-13 The present invention provides a synthetic reaction apparatus for preparing environmentally friendly flame retardants. The apparatus is capable of stirring and mixing flame retardant raw materials, and during the heating and melting process of the raw materials, the raw materials can stably adhere to the heating component 21.

[0025] include: Box 1 is placed on the ground, and a sealing cover 2 that can be opened by swinging is provided on its upper part. When the sealing cover 2 is in the closed state, it forms a seal on box 1. Heating component 21 is located inside the housing 1 and fixedly connected to the housing 1. Heating component 21 divides the internal chamber of housing 1 into an upper chamber and a lower chamber. The drive device 22 is located on the upper part of the sealing cover 2 and is fixedly connected to the sealing cover 2. The output end of the drive device 22 passes through the sealing cover 2 and extends into the interior of the sealing cover 2. The end of the drive device 22 that extends into the interior of the chamber is equipped with a stirring device 24 that can be driven by the drive device 22 to rotate. The stirring device 24 and the output shaft of the drive device 22 are both coaxially arranged with the box body 1. Positioning component 25 is located at the end of the drive device 22 and the distance between the positioning component 25 and the inner wall of the chamber can be controlled by the stirring device 24. The circulation assembly is located outside the chamber and is arranged in a ring around the chamber.

[0026] In this embodiment, the drive device 22 is a drive motor. In use, the output shaft of the drive motor is connected to the stirring device 24 located inside the housing 1 through a coupling, and the drive motor drives the stirring device 24 to rotate, thereby enabling the stirring device 24 to drive the positioning component 25 to rotate inside the housing 1. This allows the stirring device 24 to drive the positioning component 25 to stir the raw materials inside the housing 1. The drive motor directly penetrates the sealing cover 2 and extends into the housing 1 to form an insertion connection with the coupling. Therefore, when the sealing cover 2 is opened, the drive motor can be removed, allowing the sealing cover 2 to be opened without affecting the internal stirring device 24.

[0027] The stirring device 24 can drive the positioning component 25 located at its end, so that the positioning component 25 can extend and retract. The extension and retraction of the positioning component 25 corresponds to different sizes of raw materials, and after adjustment, it forms a clamping mechanism for raw materials of different sizes.

[0028] In one embodiment, the circulation component is connected to the chamber at both the top and bottom. Inside the chamber, a scraper 26 is provided that can move synchronously with the stirring device 24. The scraper 26 is located inside the positioning component 25 and is inclined. A connecting pipe 23 is provided on the outside of the box 1. The connecting pipe 23 passes through the box 1 and extends into the interior of the box 1.

[0029] In this embodiment, the inclined scraper 26 can compress the internal raw material during use, thereby ensuring that the raw material will change position with the scraper 26 and the positioning component 25 during the movement. A small gap is formed between the lower part of the scraper 26 and the surface of the heating component 21. After the raw material leaves the positioning component 25, the scraper 26 can drive the raw material to move.

[0030] The connection between the connecting pipe 23 and the box 1 facilitates the feeding and discharging of materials, thereby enabling the frequent opening and closing of the sealing cover 2.

[0031] In one embodiment, the stirring device 24 includes: Rotary rod 241 is coaxially arranged with the output end of drive device 22. The height of rotary rod 241 is limited inside the housing 1 and is connected to the output end of drive device 22 through a coupling. A protective plate 242 is provided on the outside of rotary rod 241. The protective plate 242 is located inside the upper cavity and is fixedly connected to rotary rod 241. A stirring rod 247 is located inside the lower chamber and is fixedly connected to the rotating rod 241. The stirring rod 247 is curved.

[0032] In this embodiment, a protective plate 242 and a stirring rod 247 are provided on the outside of the rotating rod 241. During use, the liquid after the raw materials are heated and melted can be stirred so that the raw materials are heated and melted inside the box 1 and then mixed evenly.

[0033] In one embodiment, the stirring device 24 further includes: The positioning rod 243 is telescopically inserted into the inner side of the rotating rod 241. The inner side of the rotating rod 241 is provided with multiple independent connecting holes 244. The connecting holes 244 extend to the outer side of the positioning rod 243, and the positioning rod 243 contacts the inner wall of the connecting hole 244. An electromagnet 245 is located on the lower part of the inner wall of the housing 1. A slidable pressing plate 246 is provided on the upper part of the electromagnet 245. The pressing plate 246 is magnetically set, and the electromagnet 245 forms a magnetic attraction with the pressing plate 246. The pressing plate 246 extends into the interior of the connecting hole 244.

[0034] In this embodiment, the multiple independent connecting holes 244 are filled with a medium. The presence of the medium can change the position under the influence of the extrusion plate 246 and the electromagnet 245, causing the positioning rod 243 to move synchronously. Thus, the positioning rod 243 can be used to control the outer positioning component 25, thereby adjusting the position between the positioning component 25 and the inner wall of the housing 1.

[0035] The positioning component 25 is installed at one end of the positioning component 25 that extends to the outside of the connecting hole 244, and the scraper 26 is fixed to the outer wall of the positioning component 25. The positioning component 25 extends and retracts to drive the scraper 26 to adjust its position.

[0036] Both the electromagnet 245 and the extrusion plate 246 are annular. The different annular diameters of the electromagnet 245 and the extrusion plate 246 correspond to the connecting holes 244 at different positions. The magnetic cooperation between the electromagnet 245 and the extrusion plate 246 at different positions can generate extrusion on the connecting holes 244 at different positions.

[0037] In one embodiment, the positioning component 25 includes: The threaded protrusion 251 is located on the inner wall of the upper cavity, and the cross-section of the threaded protrusion 251 is arc-shaped; The connecting frame 252 is fixedly connected to one end of the positioning rod 243 extending to the outside of the connecting hole 244. An arc plate 253 is provided at the end of the connecting frame 252 away from the positioning rod 243. The arc plate 253 forms a seal on the connecting frame 252. A clamping plate 254 is provided on the inner side of the connecting frame 252 to form a pressure plate for the raw material.

[0038] In this embodiment, the extension and retraction of the positioning rod 243 can push the connecting frame 252 to extend and retract. The clamping plate 254 provided on the inner side of the connecting frame 252 can ensure the stability of the raw material. At the same time, since the raw material is squeezed by the connecting frame 252 and the clamping plate 254, the raw material will come into contact with the threaded protrusion 251. During use, the position can be indicated by the threaded protrusion 251. The threaded protrusion 251 is close to the heating component 21. The heating component 21 heats the box 1 and the threaded protrusion 251, which will make the raw material conform to the shape of the threaded protrusion 251.

[0039] The material can be assembled into a bolt-nut-like structure after it fits the threaded protrusion 251. When the clamping plate 254 pushes the material to rotate continuously, the material will continuously change along the position of the threaded protrusion 251, thereby causing the material to be displaced.

[0040] In one embodiment, the positioning component 25 further includes: The pressure plate 257 is located inside the connecting frame 252. One end of the pressure plate 257 away from the arc plate 253 is provided with a compressible elastic support to the pressure plate 257. A push rod 258 is provided on the outside of the pressure plate 257. The two ends of the push rod 258 are respectively connected to the pressure plate 257 and the clamping plate 254. The movement of the pressure plate 257 drives the movement of the clamping plate 254 through the push rod 258. The diaphragm 255 is located inside the arc-shaped plate 253, and the arc-shaped plate 253 is hollow at the position where the diaphragm 255 is set, and the diaphragm 255 is attached to the pressure plate 257.

[0041] In this embodiment, the diaphragm 255 is provided so that when the connecting frame 252 pushes the raw material, the raw material can be used to compress the diaphragm 255, causing the diaphragm 255 to push the internal pressure plate 257 to move. The movement of the pressure plate 257 is used to pull the clamping plate 254, thereby pushing the clamping plate 254 out and holding the raw material in place to ensure the stability of the raw material. Since the raw material melts in a certain temperature environment, it can generate a certain amount of vertical displacement under the restriction of the threaded protrusion 251.

[0042] In one embodiment, the circulation component 27 includes: A connecting cavity 271 is located outside the cavity. The bottom of the connecting cavity 271 is connected to the lower cavity, and the upper part of the connecting cavity 271 is connected to the upper cavity. Push plate 273 is located inside the communicating cavity 271. A top plate 277 is provided on the upper part of the push plate 273. The top plate 277 has the same shape as the push plate 273 and can form a seal on the upper part of the communicating cavity 271.

[0043] In this embodiment, by utilizing the push plate 273 and the top plate 277, when the top plate 277 and the push plate 273 are displaced, the liquid located inside the chamber can be drawn into the communicating chamber 271. By changing the flow direction and position of the liquid inside the chamber, the mixing effect of the raw materials inside the chamber is enhanced, and the liquid inside the communicating chamber 271 can be used to impact the liquid inside the chamber.

[0044] In one embodiment, the circulation component 27 further includes: Telescopic rod 272 is fixed inside the box 1. The telescopic end of the telescopic rod 272 is fixedly connected to the top plate 277 and drives the top plate 277 to move in height. One-way valve 276 is provided inside the top plate 277 and the push plate 273. The upper and lower parts of the one-way valve 276 are located inside the top plate 277 and the push plate 273, respectively. A sealing ring 274 is located at the lower part of the connecting cavity 271. The sealing ring 274 has a U-shaped cross section and forms a seal between the lower part of the connecting cavity 271 and the lower chamber. The end of the sealing ring 274 facing away from the chamber protrudes outward to form a limiting protrusion 275, which can contact the push plate 273 and the top plate 277.

[0045] In this embodiment, the sealing ring 274 can close the connection between the lower part of the connecting cavity 271 and the lower chamber, so that when the telescopic rod 272 pushes the top plate 277 down, the liquid located in the lower part of the connecting cavity 271 can be squeezed into the upper part of the top plate 277 through the one-way valve 276. During the process of the telescopic rod 272 driving the top plate 277 to move and circulate, the liquid located in the lower part of the push plate 273 can be frequently introduced into the upper part of the top plate 277, and then enter the inner part of the chamber again from the connection position between the upper part of the connecting cavity 271 and the chamber.

[0046] The one-way valve 276 is designed so that liquid from the lower part of the push plate 273 can enter the upper part of the top plate 277 through the one-way valve 276, forming a one-way connection. The telescopic rod 272 drives the top plate 277 so that the top plate 277 is flush with the plane of the upper part of the connecting cavity 271 and the upper chamber, so as to facilitate the outflow of liquid.

[0047] This application also provides a method for synthesizing an environmentally friendly flame retardant, wherein the raw materials are subjected to a synthesis reaction using the aforementioned synthesis reaction equipment, and the method includes the following steps: S1. Screening and cleaning of raw materials: The raw materials used to prepare environmentally friendly flame retardants are added into the cleaning machine for cleaning. After that, the raw materials are taken out and dried. Then, the impurities in the raw materials are removed by the screening device and stored in the raw material storage box. S2. The raw materials are transported into the box 1 and heated and melted. At the same time, the stirring device 24 drives the positioning component 25 to rotate and the positioning component 25 clamps the raw materials so that the raw materials gradually melt near the heating component 21. The melted raw materials are mixed and stirred by stirring and circulation of the circulation component 27. S3. The mixed raw materials enter the separation device for distillation, extraction or filtration; S4. The raw materials after distillation, extraction or filtration are purified and modified, and then output to the finished product storage tank for storage.

[0048] In one embodiment, the separation apparatus includes a distillation column, an extraction column, and a filtration column, and the purification apparatus includes a distillation column, a crystallization column, and a dryer.

[0049] In summary, the technical solutions disclosed in the above embodiments of the present invention have at least the following advantages: 1. This application restricts and squeezes the position of the raw material, which ensures that the raw material is stably attached to the heating component 21 during use, thereby ensuring the melting speed of the raw material and the heating efficiency of the raw material. During the heating process, the raw material can rotate inside the heating component 21, thereby ensuring stable heating of the raw material during the movement.

[0050] 2. This application utilizes a stirring device 24 capable of adjusting the position of the positioning component 25. During the stirring process, the position can be adjusted according to the different raw materials, thereby ensuring that different raw materials are clamped and fixed during use, so that the raw materials are stably attached to the position of the heating component 21, and multiple telescopic positions can be adjusted during use.

[0051] 3. The clamping plate 254 used in this application can clamp and fix the two sides of the raw material during use, ensuring the stability of the raw material during rotation. This prevents the raw material from falling off after being driven and re-entering the liquid, which would prevent the raw material from being stably in contact with the heating component 21 and affect the melting efficiency of the raw material.

[0052] 4. This application provides a circulation component 27 that allows the internal heated liquid to circulate during use. This allows the internal liquid to circulate from bottom to top, thereby ensuring the mixing effect of the raw materials inside the reaction equipment. The circulation of the internal liquid also ensures that the liquid inside the chamber 1 is within a relatively stable temperature range.

[0053] Although the present invention has been disclosed in conjunction with the above embodiments, it is not intended to limit the present invention. Any person skilled in the art can make various modifications and refinements without departing from the spirit and scope of the present invention. Therefore, the scope of protection of the present invention should be defined by the appended claims.

Claims

1. A synthetic reaction apparatus for preparing environmentally friendly flame retardants, characterized in that, include: The box is placed on the ground, and a sealing cover that can be opened by swinging is installed on the top of it. When the sealing cover is closed, it forms a seal on the box. A heating element is located inside and connected to the housing, which divides the internal chamber of the housing into an upper chamber and a lower chamber. A drive device is located on the upper part of the sealing cover and connected to the sealing cover. The output end of the drive device passes through the sealing cover and extends into the inside of the sealing cover. One end of the drive device output end extending into the inside of the chamber is equipped with a stirring device that can be driven by the drive device to rotate. The stirring device and the output shaft of the drive device are both coaxially arranged with the box body. A positioning component is located at the end of the drive device and the distance between the positioning component and the inner wall of the chamber can be controlled by the stirring device. A circulation assembly is located outside the chamber and is arranged in a ring around the chamber; The stirring device includes: A rotating rod is coaxially arranged with the output end of the drive device. The height of the rotating rod is limited inside the housing and is connected to the output end of the drive device through a coupling. A protective plate is provided on the outside of the rotating rod. The protective plate is located inside the upper cavity and connected to the rotating rod. A stirring rod is located inside the lower chamber and connected to the rotating rod; the stirring rod is curved. A positioning rod is telescopically inserted into the inner side of the rotating rod. The inner side of the rotating rod is provided with multiple independent connecting holes, which extend to the outer side of the positioning rod. The positioning rod contacts the inner wall of the connecting holes. An electromagnet is located on the lower part of the inner wall of the box. A sliding pressing plate is provided on the upper part of the electromagnet. The pressing plate is magnetically set, and the electromagnet forms a magnetic attraction with the pressing plate. The pressing plate extends into the interior of the connecting hole. The positioning components include: A threaded protrusion is located on the inner wall of the upper cavity, and the cross-section of the threaded protrusion is arc-shaped; A connecting frame is provided at one end of the positioning rod extending to the outside of the connecting hole. An arc-shaped plate is provided at the end of the connecting frame away from the positioning rod, and the arc-shaped plate forms a seal on the connecting frame. A clamping plate is provided on the inner side of the connecting frame to form a compression of the raw material.

2. The synthetic reaction equipment for preparing environmentally friendly flame retardants according to claim 1, characterized in that, The circulation component connects the upper and lower parts to form a connection with the chamber. Inside the chamber, a scraper that can move synchronously with the stirring device is installed. The scraper is located inside the positioning component and is inclined. A connecting pipe is installed on the outside of the box, which passes through the box and extends into the inside of the box.

3. The synthetic reaction equipment for preparing environmentally friendly flame retardants according to claim 2, characterized in that, The positioning components also include: The pressure plate is located inside the connecting frame. One end of the pressure plate away from the arc plate is provided with a compressible elastic element to support the pressure plate. A push rod is provided on the outside of the pressure plate. The two ends of the push rod are connected to the pressure plate and the clamping plate, respectively. The movement of the pressure plate drives the movement of the clamping plate through the push rod. The diaphragm is located inside the arc-shaped plate, and the arc-shaped plate is hollow at the position where the diaphragm is set, with the diaphragm attached to the pressure plate.

4. The synthetic reaction equipment for preparing environmentally friendly flame retardants according to claim 3, characterized in that, The circulation components include: A connecting cavity is located outside the chamber, with its bottom connected to the lower chamber and its upper part connected to the upper chamber. A push plate is located inside the communicating cavity. A top plate is provided on the upper part of the push plate. The top plate has the same shape as the push plate and can form a seal on the upper part of the communicating cavity.

5. The synthetic reaction equipment for preparing environmentally friendly flame retardants according to claim 4, characterized in that, The circulation component also includes: A telescopic rod is fixed inside the box. The telescopic end of the telescopic rod is connected to the top plate and drives the top plate to move in height. One-way valves are provided on the inner sides of the top plate and the push plate, with the upper and lower parts of the one-way valves located on the inner sides of the top plate and the push plate, respectively. A sealing ring is located at the lower part of the connecting cavity. The sealing ring has a U-shaped cross-section and forms a seal between the lower part of the connecting cavity and the lower chamber. The end of the sealing ring facing away from the chamber protrudes outward to form a limiting protrusion, which can contact the push plate and the top plate.

6. A method for synthesizing an environmentally friendly flame retardant, characterized in that, The synthesis method involves reacting the raw materials with the synthesis reaction apparatus as described in any one of claims 1-5, and includes the following steps: S1. Screening and cleaning of raw materials: The raw materials used to prepare environmentally friendly flame retardants are added into the cleaning machine for cleaning. After that, the raw materials are taken out and dried. Then, the impurities in the raw materials are removed by the screening device and stored in the raw material storage box. S2. The raw materials are transported into the box and heated to melt. At the same time, the stirring device drives the positioning component to rotate and clamps the raw materials, so that the raw materials gradually melt near the heating component. The melted raw materials are mixed and stirred by the stirring and circulation components. S3. The mixed raw materials enter the separation device for distillation, extraction or filtration; S4. The raw materials after distillation, extraction or filtration are purified and modified, and then output to the finished product storage tank for storage.

7. The method for synthesizing an environmentally friendly flame retardant according to claim 6, characterized in that, The separation apparatus includes a distillation column, an extraction column, and a filtration column, while the purification apparatus includes a distillation column, a crystallization column, and a dryer.

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