Reaction device for preparing anhydride curing agent for wind power and use process of reaction device

Abstract

The invention provides a reaction device for preparing an acid anhydride curing agent for wind power and a using process thereof, and relates to the technical field of acid anhydride curing agent preparation.The reaction device comprises a reaction kettle, a solid feeding mechanism facilitating feeding of solid substances is arranged on the reaction kettle, and a liquid feeding mechanism facilitating feeding of liquid substances is arranged on the reaction kettle; the solid feeding mechanism comprises a motor, a storage tank, a circular shaft and a valve plate, the liquid feeding mechanism comprises a liquid storage tank, a top cover, a rotating disc and a receiving hopper, and two supporting rods are fixedly mounted at the lower end of the motor. When a small amount of maleic anhydride and methyl butadiene are put into the reaction kettle for multiple times in the storage tank and the liquid storage tank, the motor drives the stirring rod to rotate to stir and mix the two raw materials, and the raw materials can be quickly and uniformly stirred after being just put into the reaction kettle through the synchronous operation; and uniform dispersion of maleic anhydride in methyl butadiene is ensured.

Description

Technical Field

[0001] The invention belongs to the technical field of anhydride curing agent preparation, and more specifically, particularly relates to a reaction device for preparing anhydride curing agent for wind power and a use process thereof. Background Art

[0002] Anhydride curing agent is a curing agent that can undergo cross-linking reaction with polymers such as epoxy resin to form a three-dimensional network structure. In the field of wind power, the performance requirements of anhydride curing agent are relatively high, because wind power equipment usually works under harsh environmental conditions, such as high humidity, high salt spray, frequent high and low temperature changes, etc. Its preparation process is as follows:

[0003] 1. Material preparation: Taking the preparation of methyltetrahydrophthalic anhydride as an example, the main raw materials are maleic anhydride and methylbutadiene;

[0004] 2. Raw material pretreatment: Maleic anhydride easily absorbs moisture in the air, so it needs to be dried. Methyl butadiene may contain a small amount of impurities, such as other unsaturated hydrocarbons, so it needs to be purified;

[0005] 3. Adding reaction: Add the raw materials into the reactor and heat the reactor. The reaction temperature is generally between 100-150℃, and start the stirring equipment for stirring;

[0006] 4. Post-processing: including reduced pressure distillation and filtration to remove impurities.

[0007] The Chinese patent publication number is: CN116082588A, a method for preparing a high-temperature anti-corrosion powder phenolic curing agent and a preparation device thereof, wherein the curing agent proposed in the present application can significantly improve the flexibility and corrosion resistance of the anti-corrosion powder in the pipeline coating, and in addition, the adhesion and impact strength of the curing agent and the chemical corrosion resistance are increased, and the problem of edge shedding can be effectively solved.

[0008] The existing preparation reactor has the following disadvantages when preparing anhydride curing agent:

[0009] 1. In the preparation of the existing anhydride curing agent, the raw materials are added sequentially. The sequential addition leads to uneven mixing of the raw materials in the initial stage of the reaction, so that the reaction cannot be carried out quickly. In order to make the reaction proceed fully, a longer reaction time may be required to wait for the two raw materials to be fully mixed and reacted completely. In addition, the sequential addition of the raw materials is likely to cause inconsistent local reaction conditions.

[0010] 2. In the existing anhydride curing agent preparation device, it is difficult to control the amount of different types of materials added. Most of them are simply poured directly into the reactor through a funnel or an opening, which easily leads to too much raw material being added at one time, and such addition may cause the raw material to block the feed port;

[0011] In view of this, the existing structure and defects are studied and improved, and a reaction device for preparing anhydride curing agent for wind power and a use process thereof are provided, in order to achieve a more practical purpose. Summary of the invention

[0012] In order to solve the above technical problems, the present invention provides a reaction device for preparing anhydride curing agent for wind power and a use process thereof to solve the above problems.

[0013] A reaction device for preparing anhydride curing agent for wind power, comprising a reactor, the reactor is provided with a solid feeding mechanism for conveniently feeding solid materials, the reactor is provided with a liquid feeding mechanism for conveniently feeding liquid materials, the solid feeding mechanism comprises a motor, a storage tank, a round shaft and a valve plate, the liquid feeding mechanism comprises a liquid storage tank, a top cover, a rotating disk and a receiving hopper, two support rods are fixedly installed at the lower end of the motor, the motor is fixedly installed at the upper end of the reactor through the two support rods, a material guide pipe is fixedly installed at the lower end of the storage tank, a material delivery pipe is fixedly installed at the lower end of the material guide pipe, the material delivery pipe passes through and is fixedly installed at the upper end of the reactor, a side rod is fixedly installed at the side end of the round shaft, the valve The plate is located on the inner side wall of the guide tube, and L-shaped support rods are fixedly installed on both side ends of the liquid storage tank, and the liquid storage tank is fixedly installed on the upper end of the reactor through the L-shaped support rods, and the top cover is sleeved on the upper end of the liquid storage tank, and the rotating disk is located at the upper end of the top cover, and the receiving hopper is rotatably installed on the circumferential end of the liquid storage tank, and the lower end of the reactor is provided with a discharge port, and a vertical rod is fixedly installed on the upper end of the reactor, and a first circular groove is penetrated through the side end of the vertical rod, and the circular shaft is rotatably installed on the inner side wall of the first circular groove, and a connecting rod is fixedly installed on the output end of the motor, and a stirring rod is fixedly installed on the lower end of the connecting rod, and a first flat gear is fixedly installed on the circumferential end of the connecting rod, and the lower end of the first flat gear The first conical tooth is fixedly installed on the part, and the side end portion of the guide tube is fixedly installed with a C-shaped plate, and the side end portion of the C-shaped plate is penetrated with a second circular groove, and the side end portion of the C-shaped plate is also penetrated with a plurality of first limiting holes, and the circumferential end portion of the circular shaft is fixedly installed with a second conical tooth, and the second conical tooth and the first conical tooth are meshed with each other, and the side end portion of the side rod is fixedly installed with a receiving plate, and the receiving plate is rotatably installed on the inner side wall of the guide tube, and a receiving groove is provided on the upper end portion of the receiving plate, and a transmission rod is fixedly installed on the side end portion of the valve plate, and the transmission rod is rotatably installed on the side end portion of the guide tube, and a pull plate is provided on the side end portion of the transmission rod, and a first spring is fixedly installed between the pull plate and the transmission rod, and a spring between the pull plate and the transmission rod A first telescopic rod is also fixedly installed between the two ends, the first telescopic rod is located on the inner side wall of the first spring, a first limiting rod is fixedly installed on the side end of the pull plate, a plurality of liquid outlet grooves are penetrated through the lower end of the liquid storage tank, a feeding pipe is fixedly installed on the upper end of the top cover, a third circular groove is penetrated through the upper end of the top cover, and a plurality of second limiting holes are also arranged in an array at the upper end of the top cover, a vertical shaft is provided at the lower end of the rotating disk, the vertical shaft penetrates and is rotatably installed on the inner side wall of the third circular groove, a second spring is fixedly installed between the rotating disk and the vertical shaft, a second telescopic rod is also fixedly installed between the rotating disk and the vertical shaft, the second telescopic rod is located on the inner side wall of the second spring, and a second limiting rod is fixedly installed on the lower end of the rotating disk.

[0014] Preferably, the end of the second limiting rod is slidably mounted on the inner wall of the second limiting hole, a connecting piece is fixedly mounted on the lower end of the vertical shaft, a plurality of guide rods are fixedly mounted on the circumferential end of the connecting piece, and a shielding plate is fixedly mounted on the side end of each guide rod.

[0015] Preferably, a fixed vertical pipe is fixedly installed through the upper end of the reaction kettle, a fixed plate is fixedly installed on the inner side wall of the receiving hopper, a plurality of liquid guiding grooves are opened through the upper end of the fixed plate, the receiving hopper is rotatably installed on the upper end of the fixed vertical pipe, a second spur gear is provided at the circumferential end of the receiving hopper, and a toothed belt is meshed between the second spur gear and the first spur gear.

[0016] A process for using a reaction device for preparing anhydride curing agent for wind power generation, the steps are as follows:

[0017] S1: The user can put an appropriate amount of maleic anhydride into the storage tank and inject methyl butadiene into the liquid storage tank;

[0018] S2: The user can start the motor first, and the motor rotates to drive the receiving hopper to rotate through the cooperation of the first flat gear and the second flat gear. When the liquid guide groove and the liquid outlet groove in the receiving hopper overlap, methyl butadiene can be added in small amounts and multiple times;

[0019] S3: The user can drive the receiving plate to rotate by cooperating with the first conical teeth and the second conical teeth, and the maleic anhydride received by the receiving slot in the receiving plate will be reciprocated and put into the reactor, so as to achieve multiple additions of maleic anhydride in small amounts;

[0020] S4: The motor drives the stirring rod to rotate through the connecting rod to achieve mixing of maleic anhydride and methyl butadiene, thereby preparing the anhydride curing agent.

[0021] Compared with the prior art, the present invention has the following beneficial effects:

[0022] In the present invention, for methylbutadiene, a small amount of multiple additions are achieved through the cooperation of the receiving hopper, the liquid guide groove on the fixed plate and the liquid outlet groove at the bottom of the liquid storage tank. The motor is started to drive the connecting rod and the first flat gear to rotate, and then the receiving hopper is rotated through a series of transmissions. Only when the liquid guide groove and the liquid outlet groove coincide with each other, methylbutadiene will be injected into the reactor. This method can accurately control the amount of methylbutadiene added to the reactor each time, and avoid excessive one-time addition leading to a runaway reaction.

[0023] In the present invention, by cooperating with the rotating disk, the vertical shaft, the connecting piece, the guide rod and the shielding plate, the user can change the input amount of methylbutadiene according to actual needs, pull the rotating disk upward to make its second limit rod leave the second limit hole, and rotate the rotating disk to drive the shielding plate to rotate. The overlap degree of the shielding plate and the liquid outlet groove determines the amount of methylbutadiene flowing out. This can further accurately control the feeding amount while realizing small amount and multiple additions, so that the reaction can be carried out according to the ideal raw material ratio.

[0024] In the present invention, a motor drives a connecting rod, a first conical tooth, and a second conical tooth to rotate the circular shaft, and the circular shaft drives a receiving plate to rotate with the help of a side rod. When the receiving slot on the receiving plate opens upward, maleic anhydride is received, and when the opening is downward, maleic anhydride is added, thereby realizing multiple small amounts of maleic anhydride. This method can effectively avoid affecting the reaction due to excessive addition at one time, and ensure that the concentration of the raw materials can be finely controlled during the reaction.

[0025] In the present invention, the rotating receiving plate can prevent blockage when feeding maleic anhydride. Because maleic anhydride is a solid powder or crystal, the conventional feeding method may cause blockage due to accumulation and other reasons. This dynamic material receiving and feeding method can effectively avoid this problem and ensure a smooth feeding process.

[0026] In the present invention, by setting a valve plate, when the amount of maleic anhydride added reaches the requirement, the valve plate can be closed to prevent excessive addition. This design can stop the addition of maleic anhydride in a timely and effective manner when no addition is needed, further ensuring the precise control of the amount of raw material added, facilitating the timely stopping of the addition when no addition is needed, and the operation is relatively flexible, which can better adapt to the addition requirements at different stages.

[0027] In the present invention, while maleic anhydride and methylbutadiene are added to the reactor in small amounts and multiple times through a material storage tank and a liquid storage tank, a motor drives a stirring rod to rotate, so that the two raw materials are stirred and mixed. This synchronous operation enables the raw materials to be quickly and evenly stirred just after being added to the reactor, thereby ensuring that the maleic anhydride is evenly dispersed in the methylbutadiene, avoiding the situation that the local raw material concentration is too high or the reaction is uneven due to the sequential addition of the raw materials, and the addition of small amounts and multiple times is helpful to gradually mix and react the raw materials in the reactor, avoiding the problem that the local reaction is violent due to the one-time addition of a large amount of raw materials, so that the reaction process is more stable and controllable. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 It is a schematic structural diagram of a reaction kettle of the present invention;

[0029] Figure 2 It is a schematic diagram of the cross-sectional structure of the reactor of the present invention;

[0030] Figure 3 It is a schematic diagram of the structure of the material storage tank of the present invention;

[0031] Figure 4 It is a schematic diagram of the structure explosion of the material storage tank of the present invention;

[0032] Figure 5 It is a schematic diagram of the structure explosion of the material guide pipe of the present invention;

[0033] Figure 6 It is a schematic diagram of the structure explosion of the stirring rod of the present invention;

[0034] Figure 7 It is a schematic diagram of the explosion structure of the receiving hopper of the present invention;

[0035] Figure 8 It is a schematic structural diagram of the liquid storage tank of the present invention;

[0036] Fig. 9 It is a structural schematic diagram of the rotating disk of the present invention.

[0037] In the figure, the corresponding relationship between the names of the components and the numbers of the accompanying drawings is as follows: 1. Reactor; 11. Discharge port; 12. Vertical rod; 13. First circular groove; 2. Motor; 21. Connecting rod; 22. First flat gear; 23. First conical gear; 24. Stirring rod; 25. Support rod; 3. Storage trough; 31. Guide pipe; 32. Feed pipe; 33. C-shaped plate; 34. Second circular groove; 35. First limiting hole; 4. Round shaft; 41. Side rod; 42. Receiving plate; 43. Receiving trough; 44. Second conical gear; 5. Valve plate; 51. Transmission rod; 52 , the first telescopic rod; 53, the first spring; 54, the pull plate; 55, the first limiting rod; 6, the liquid storage tank; 61, the L-shaped support rod; 62, the liquid outlet tank; 7, the top cover; 71, the feed pipe; 72, the second limiting hole; 73, the third circular groove; 8, the rotating disk; 81, the second limiting rod; 82, the second telescopic rod; 83, the second spring; 84, the vertical shaft; 85, the connecting piece; 86, the guide rod; 87, the shielding plate; 9, the receiving hopper; 91, the fixed disk; 92, the liquid guide groove; 93, the second flat gear; 94, the fixed vertical pipe; 95, the toothed belt. DETAILED DESCRIPTION

[0038] The following is a further detailed description of the embodiments of the present invention in conjunction with the accompanying drawings and examples. The following examples are used to illustrate the present invention but are not intended to limit the scope of the present invention.

[0039] See also Figure 1 - Fig. 9The present invention provides a reaction device for preparing anhydride curing agent for wind power, comprising a reactor 1, a solid feeding mechanism for conveniently feeding solid materials is provided on the reactor 1, and a liquid feeding mechanism for conveniently feeding liquid materials is provided on the reactor 1, the solid feeding mechanism comprises a motor 2, a storage tank 3, a round shaft 4 and a valve plate 5, and the liquid feeding mechanism comprises a liquid storage tank 6, a top cover 7, a rotating disk 8 and a receiving hopper 9. When preparing the anhydride curing agent, it is necessary to prepare corresponding organic acids or their derivatives as raw materials, including maleic anhydride, methyl butadiene, etc. Maleic anhydride is a white, needle-shaped crystal or powder solid under normal conditions, and methyl butadiene is an organic compound, which is a colorless liquid at normal temperature and pressure. When preparing the anhydride curing agent, the reactor 1 is firstly replaced with nitrogen to eliminate the air in the reactor 1. Gas is used to prevent the raw materials from being oxidized, and then the two are added to the reactor 1, while the speed of adding the materials is controlled. After adding the materials, the stirring rod 24 on the reactor 1 needs to be started to mix and stir the raw materials so that the maleic anhydride is evenly dispersed in the methylbutadiene in the reactor. Maleic anhydride and methylbutadiene are mainly used to prepare anhydride curing agent through Diels-Alder reaction, which is a [4+2] cycloaddition reaction. Maleic anhydride is a dienophile, which contains a carbon-carbon double bond and anhydride functional group. Methylbutadiene is a dienophile, which contains two conjugated double bonds. During the reaction, the two double bonds of methylbutadiene and the double bonds of maleic anhydride undergo cycloaddition to form a new unsaturated six-membered ring structure, while retaining the anhydride group. The reaction product is methyltetrahydrophthalic anhydride, which is a commonly used anhydride curing agent;

[0040] Two support rods 25 are fixedly installed at the lower end of the motor 2, and the motor 2 is fixedly installed on the upper end of the reactor 1 through the two support rods 25. A guide pipe 31 is fixedly installed at the lower end of the material storage tank 3, and a feed pipe 32 is fixedly installed at the lower end of the guide pipe 31. The feed pipe 32 penetrates and is fixedly installed at the upper end of the reactor 1. A side rod 41 is fixedly installed at the side end of the circular shaft 4. The valve plate 5 is located on the inner side wall of the guide pipe 31. L-shaped support rods 61 are fixedly installed at both side ends of the liquid storage tank 6. The liquid storage tank 6 is fixedly installed on the upper end of the reactor 1 through the L-shaped support rods 61. The top cover 7 is sleeved on the upper end of the liquid storage tank 6. The rotating disk 8 is located at the upper end of the top cover 7. The receiving hopper 9 is rotatably installed on the top end of the liquid storage tank 6. The circumferential end of the liquid storage tank 6, the lower end of the reactor 1 is provided with a discharge port 11, the upper end of the reactor 1 is fixedly installed with a vertical rod 12, the side end of the vertical rod 12 is penetrated with a first circular groove 13, the circular shaft 4 is rotatably installed on the inner side wall of the first circular groove 13, the output end of the motor 2 is fixedly installed with a connecting rod 21, the lower end of the connecting rod 21 is fixedly installed with a stirring rod 24, the circumferential end of the connecting rod 21 is fixedly installed with a first flat gear 22, the lower end of the first flat gear 22 is fixedly installed with a first conical tooth 23, the side end of the guide tube 31 is fixedly installed with a C-shaped plate 33, the side end of the C-shaped plate 33 is penetrated with a second circular groove 34, and the side end of the C-shaped plate 33 is also penetrated with multiple A first limiting hole 35 is provided, and a second conical tooth 44 is fixedly installed at the circumferential end of the circular shaft 4, and the second conical tooth 44 is meshed with the first conical tooth 23. A receiving plate 42 is fixedly installed at the side end of the side rod 41, and the receiving plate 42 is rotatably installed on the inner side wall of the material guide tube 31. A receiving groove 43 is provided at the upper end of the receiving plate 42. When the connecting rod 21 drives the first flat gear 22 to rotate, it can also drive the first conical tooth 23 to rotate. The rotation of the first conical tooth 23 drives the circular shaft 4 to rotate through the second conical tooth 44. The rotation of the circular shaft 4 drives the receiving plate 42 to rotate through the side rod 41. The maleic anhydride part in the storage tank 3 will fall into the receiving groove 43 due to gravity, and when the side rod 41 drives When the receiving plate 42 rotates, part of the maleic anhydride in the receiving trough 43 will be driven to rotate at the same time. When the receiving plate 42 rotates and drives the opening of the receiving trough 43 to face downward, part of the maleic anhydride in the receiving trough 43 will be put into the feeding pipe 32 and then into the reactor 1, and the process will be repeated. That is, when the receiving trough 43 on the receiving plate 42 opens upward, maleic anhydride can be taken, and when the receiving trough 43 on the receiving plate 42 opens downward, maleic anhydride can be put in, and maleic anhydride can be put in small amounts and multiple times to avoid over-dosage. At the same time, the rotating receiving plate 42 can also avoid the problem of maleic anhydride being blocked when putting maleic anhydride.

[0041] A transmission rod 51 is fixedly installed on the side end of the valve plate 5, and the transmission rod 51 is rotatably installed on the side end of the guide tube 31. A pull plate 54 is provided on the side end of the transmission rod 51, and a first spring 53 is fixedly installed between the pull plate 54 and the transmission rod 51. A first telescopic rod 52 is also fixedly installed between the pull plate 54 and the transmission rod 51, and the first telescopic rod 52 is located on the inner side wall of the first spring 53. A first limit rod 55 is fixedly installed on the side end of the pull plate 54. In actual delivery, after the delivery amount is marked to meet the standard, the user can close the valve plate 5 to prevent the receiving plate 42 from still being between the motor 2 and the first stopper when the motor 2 drives the stirring rod 24 to rotate and stir in the later stage. The conical teeth 23 and the second conical teeth 44 rotate in cooperation, resulting in excessive feeding. When closing the valve plate 5, the user can pull the pull plate 54. The movement of the pull plate 54 will stretch the first telescopic rod 52 and the first spring 53. The pull plate 54 will drive the first limiting rod 55 to leave the inner wall of the first limiting hole 35. At this time, the user can rotate the pull plate 54. The rotation of the pull plate 54 drives the valve plate 5 to rotate through the transmission rod 51. When the valve plate 5 rotates vertically, the valve plate 5 is in an open state. When the valve plate 5 rotates horizontally, the valve plate 5 is in a closed state. In this way, when no feeding is needed, the valve plate 5 can be adjusted to close to avoid further feeding into the reactor 1.

[0042] The lower end of the liquid storage tank 6 is provided with a plurality of liquid outlet grooves 62. In the actual delivery process, the user can also change the delivery amount of methyl butadiene according to the actual delivery demand. The user can pull the rotating disk 8 upwards. At this time, the second telescopic rod 82 and the second spring 83 are stretched. The movement of the rotating disk 8 will drive the second limiting rod 81 to move away from the inner side wall of the second limiting hole 72. At this time, the user can rotate the rotating disk 8. The rotation of the rotating disk 8 will drive the vertical shaft 84 to rotate through the second telescopic rod 82 and the second spring 83. The vertical shaft 84 rotates The movement will drive each guide rod 86 to rotate through the connecting piece 85, and the rotation of each guide rod 86 will drive each shielding plate 87 to rotate. When each shielding plate 87 rotates and is in a state of overlap with each liquid outlet groove 62, the amount of methylbutadiene flowing out of the liquid outlet groove 62 will decrease. When each shielding plate 87 rotates and is in a state of separation from each liquid outlet groove 62, the amount of methylbutadiene flowing out of the liquid outlet groove 62 will increase. In this way, while adding methylbutadiene in small amounts and multiple times, the amount of methylbutadiene added can also be controlled.

[0043] A feed pipe 71 is fixedly installed on the upper end of the top cover 7, a third circular groove 73 is penetrated through the upper end of the top cover 7, and a plurality of second limiting holes 72 are arranged in an array at the upper end of the top cover 7. A vertical shaft 84 is provided at the lower end of the rotating disk 8, and the vertical shaft 84 is rotatably installed on the inner side wall of the third circular groove 73. A second spring 83 is fixedly installed between the rotating disk 8 and the vertical shaft 84, and a second telescopic rod 82 is also fixedly installed between the rotating disk 8 and the vertical shaft 84. The second telescopic rod 82 is located on the inner side wall of the second spring 83. The lower end of the rotating disk 8 A second limiting rod 81 is fixedly installed, and the end of the second limiting rod 81 is slidably installed on the inner side wall of the second limiting hole 72. A connecting piece 85 is fixedly installed on the lower end of the vertical shaft 84, and a plurality of guide rods 86 are fixedly installed on the circumferential end of the connecting piece 85. A shielding plate 87 is fixedly installed on the side end of each guide rod 86. A fixed vertical pipe 94 is fixedly installed through the upper end of the reactor 1, and a fixed plate 91 is fixedly installed on the inner side wall of the hopper 9. A plurality of liquid guide grooves 92 are opened through the upper end of the fixed plate 91. The hopper 9 is rotatably installed. Installed at the upper end of the fixed vertical pipe 94, the circumferential end of the receiving hopper 9 is provided with a second flat gear 93, and a toothed belt 95 is meshed between the second flat gear 93 and the first flat gear 22. Before preparation, the user can put an appropriate amount of maleic anhydride into the storage tank 3, and at the same time inject methyl butadiene into the storage tank 6 to assist the two in feeding. When actually adding materials, the user can start the motor 2 first, and the start of the motor 2 will drive the connecting rod 21 to rotate, and the rotation of the connecting rod 21 will drive the first flat gear 22 to rotate, and the first flat gear 22 The rotation will drive the second flat gear 93 to rotate through the toothed belt 95, and the rotation of the second flat gear 93 will drive the receiving hopper 9 to rotate. The rotation of the receiving hopper 9 will drive the liquid guide groove 92 on the fixed plate 91 to rotate. Only when the liquid guide groove 92 rotates and coincides with the liquid outlet groove 62 at the bottom of the liquid storage tank 6, the methylbutadiene in the liquid storage tank 6 will enter the receiving hopper 9 through the liquid outlet groove 62 and the liquid guide groove 92, and the methylbutadiene will be injected into the reactor 1 through the receiving hopper 9 and the fixed vertical pipe 94, thereby realizing the addition of methylbutadiene in small quantities and multiple times.

[0044] Working principle:

[0045] In the first step, when preparing the anhydride curing agent, it is necessary to prepare the corresponding organic acid or its derivative as a raw material, including maleic anhydride, methyl butadiene, etc. Maleic anhydride is a white, needle-shaped crystal or powder solid under normal conditions, and methyl butadiene is an organic compound that is a colorless liquid at room temperature and pressure. When preparing the anhydride curing agent, the reactor 1 is first replaced with nitrogen to remove the air in the reactor 1 to prevent the raw materials from being oxidized, and then the two are added to the reactor 1, and the feeding speed is controlled at the same time. After the feeding, the stirring rod 24 on the reactor 1 needs to be started to mix and stir the raw materials to make the maleic anhydride The dianhydride is evenly dispersed in the methylbutadiene in the kettle, and maleic anhydride and methylbutadiene are mainly used to prepare anhydride curing agent through Diels-Alder reaction, which is a [4+2] cycloaddition reaction. Maleic anhydride is a dienophile, which contains a carbon-carbon double bond and anhydride functional group, and methylbutadiene is a dienophile, which contains two conjugated double bonds. During the reaction, the two double bonds of methylbutadiene and the double bonds of maleic anhydride undergo cycloaddition to form a new unsaturated six-membered ring structure, while retaining the anhydride group. The reaction product is methyltetrahydrophthalic anhydride, which is a commonly used anhydride curing agent;

[0046] The second step is that before the preparation, the user can put an appropriate amount of maleic anhydride into the storage tank 3, and inject methylbutadiene into the liquid storage tank 6 at the same time, and perform auxiliary feeding of the two. When actually feeding, the user can first start the motor 2. The start of the motor 2 will drive the connecting rod 21 to rotate, and the rotation of the connecting rod 21 will drive the first flat gear 22 to rotate. The rotation of the first flat gear 22 will drive the second flat gear 93 to rotate through the toothed belt 95. The rotation of the second flat gear 93 will drive the receiving hopper 9 to rotate, and the rotation of the receiving hopper 9 will drive the liquid guide groove 92 on the fixed plate 91 to rotate. Only when the liquid guide groove 92 rotates and coincides with the liquid outlet groove 62 at the bottom of the liquid storage tank 6, the methylbutadiene in the liquid storage tank 6 will enter the receiving hopper 9 through the liquid outlet groove 62 and the liquid guide groove 92, and the methylbutadiene will be injected into the reactor 1 through the receiving hopper 9 and the fixed standpipe 94, thereby realizing the feeding of methylbutadiene in small quantities and multiple times;

[0047] For methyl butadiene, the device realizes multiple small-scale additions through the cooperation between the receiving hopper 9, the liquid guide groove 92 on the fixed plate 91 and the liquid outlet groove 62 at the bottom of the liquid storage tank 6. The motor 2 is started to drive the connecting rod 21 and the first flat gear 22 to rotate, and then the receiving hopper 9 is rotated through a series of transmissions. Only when the liquid guide groove 92 and the liquid outlet groove 62 coincide, the methyl butadiene will be injected into the reactor 1. This method can accurately control the amount of methyl butadiene added to the reactor 1 each time, and avoid excessive one-time addition leading to uncontrolled reaction.

[0048] The device cooperates with the rotating disk 8, the vertical shaft 84, the connecting piece 85, the guide rod 86 and the shielding plate 87. The user can change the input amount of methylbutadiene according to actual needs. The rotating disk 8 is pulled upward to make the second limit rod 81 leave the second limit hole 72. The rotating disk 8 can drive the shielding plate 87 to rotate. The overlap degree of the shielding plate 87 and the liquid outlet groove 62 determines the amount of methylbutadiene flowing out. This can further accurately control the amount of feed while realizing small amount and multiple additions, so that the reaction can be carried out according to the ideal raw material ratio.

[0049] The third step is that during the actual delivery process, the user can also change the amount of methylbutadiene added according to the actual delivery needs. The user can pull the rotating disk 8 upwards, and the second telescopic rod 82 and the second spring 83 are stretched. The movement of the rotating disk 8 will drive the second limiting rod 81 to move away from the inner wall of the second limiting hole 72. At this time, the user can rotate the rotating disk 8. The rotation of the rotating disk 8 will drive the vertical shaft 84 to rotate through the second telescopic rod 82 and the second spring 83. The rotation of the vertical shaft 84 will drive each guide rod 86 to rotate through the connecting piece 85. The rotation of each guide rod 86 will drive each shielding plate 87 to rotate. When each shielding plate 87 rotates and is in a state of overlap with each liquid outlet trough 62, the amount of methylbutadiene flowing out of the liquid outlet trough 62 will decrease. When each shielding plate 87 rotates and is in a state of separation from each liquid outlet trough 62, the amount of methylbutadiene flowing out of the liquid outlet trough 62 will increase. In this way, while adding methylbutadiene in small amounts and multiple times, the amount of methylbutadiene added can also be controlled.

[0050] In the fourth step, while the connecting rod 21 drives the first flat gear 22 to rotate, it can also drive the first conical gear 23 to rotate. The first conical gear 23 rotates through the second conical gear 44 to drive the round shaft 4 to rotate. The round shaft 4 rotates through the side rod 41 to drive the receiving plate 42 to rotate. The maleic anhydride part in the storage tank 3 will fall into the receiving tank 43 due to gravity. When the side rod 41 drives the receiving plate 42 to rotate, it will also drive part of the maleic anhydride in the receiving tank 43 to rotate. When the receiving plate 42 rotates, the opening of the receiving tank 43 is driven toward When the receiving plate 42 is rotated downward, part of the maleic anhydride in the receiving trough 43 will be put into the feeding pipe 32 and then into the reactor 1, and the maleic anhydride can be taken when the receiving trough 43 on the receiving plate 42 opens upward, and the maleic anhydride can be put in when the receiving trough 43 on the receiving plate 42 opens downward, so that the maleic anhydride can be put in a small amount and multiple times to avoid excessive putting. At the same time, the rotating receiving plate 42 can also avoid the problem of maleic anhydride being blocked when putting maleic anhydride.

[0051] The device drives the connecting rod 21, the first conical teeth 23, and the second conical teeth 44 through the motor 2 to rotate the round shaft 4, and the round shaft 4 drives the receiving plate 42 to rotate with the help of the side rod 41. When the receiving slot 43 on the receiving plate 42 opens upward, maleic anhydride is received, and when it opens downward, maleic anhydride is added, thereby realizing multiple small amounts of maleic anhydride. This method can effectively avoid the reaction being affected by excessive one-time addition, and ensure that the concentration of the raw materials can be finely controlled during the reaction.

[0052] The device can prevent blockage when feeding maleic anhydride through the rotating material receiving plate 42, because maleic anhydride is a solid powder or crystal, and the conventional feeding method may cause blockage due to accumulation and other reasons, while this dynamic material receiving and feeding method can effectively avoid this problem and ensure the smooth feeding process;

[0053] The fifth step, in actual feeding, after the feeding amount reaches the standard, the user can close the valve plate 5 to avoid that when the motor 2 drives the stirring rod 24 to rotate and stir in the later stage, the receiving plate 42 is still rotated under the cooperation of the motor 2, the first conical teeth 23 and the second conical teeth 44, resulting in excessive feeding. When closing the valve plate 5, the user can pull the pull plate 54, and the movement of the pull plate 54 will stretch the first telescopic rod 52 and the first spring 53, and the pull plate 54 will drive the first limiting rod 55 to leave the inner wall of the first limiting hole 35. At this time, the user can rotate the pull plate 54, and the rotation of the pull plate 54 drives the valve plate 5 to rotate through the transmission rod 51. When the valve plate 5 rotates vertically, the valve plate 5 is in an open state, and when the valve plate 5 rotates horizontally, the valve plate 5 is in a closed state, so as to achieve that when no feeding is needed, the valve plate 5 can be adjusted to close to avoid further feeding into the reactor 1;

[0054] The device is provided with a valve plate 5. When the amount of maleic anhydride added reaches the requirement, the valve plate 5 can be closed to prevent excessive addition. This design can effectively stop the addition of maleic anhydride in a timely manner when no addition is needed, further ensuring the precise control of the amount of raw material added, facilitating the timely stop of addition when no addition is needed, and the operation is relatively flexible, which can better meet the feeding requirements at different stages.

[0055] In the sixth step, when maleic anhydride and methyl butadiene are added into the reactor 1 in small amounts and multiple times from the material storage tank 3 and the liquid storage tank 6, the motor 2 is started and the stirring rod 24 is driven to rotate through the connecting rod 21 to stir and mix the maleic anhydride and methyl butadiene in the reactor 1, thereby preparing the anhydride curing agent;

[0056] The device stirs and mixes the two raw materials by feeding maleic anhydride and methylbutadiene into the reactor 1 in small amounts and multiple times through the material storage tank 3 and the liquid storage tank 6, while the motor 2 drives the stirring rod 24 to rotate. This synchronous operation enables the raw materials to be quickly and evenly stirred just after being fed into the reactor 1, ensuring that the maleic anhydride is evenly dispersed in the methylbutadiene. The feeding method of small amounts and multiple times helps to gradually mix and react the raw materials in the reactor 1, avoiding the problem of violent local reactions that may occur when a large amount of raw materials are fed at one time, making the reaction process more stable and controllable.

[0057] The embodiments of the present invention are given for the purpose of illustration and description, and are not intended to be exhaustive or to limit the invention to the disclosed forms. Many modifications and variations will be apparent to those of ordinary skill in the art. The embodiments are selected and described in order to better illustrate the principles and practical applications of the present invention and to enable those of ordinary skill in the art to understand the present invention and thereby design various embodiments with various modifications suitable for specific uses.

Claims

1. A reaction device for preparing anhydride curing agent for wind power generation, comprising a reaction kettle (1), characterized in that: The reactor (1) is provided with a solid feeding mechanism for facilitating the feeding of solid materials, and the reactor (1) is provided with a liquid feeding mechanism for facilitating the feeding of liquid materials; The solid feeding mechanism comprises a motor (2), a material storage tank (3), a round shaft (4) and a valve plate (5); the liquid feeding mechanism comprises a liquid storage tank (6), a top cover (7), a rotating disk (8) and a receiving hopper (9); two support rods (25) are fixedly mounted on the lower end of the motor (2); the motor (2) is fixedly mounted on the upper end of the reaction kettle (1) via the two support rods (25); a material guide pipe (31) is fixedly mounted on the lower end of the material storage tank (3); a material delivery pipe (32) is fixedly mounted on the lower end of the material guide pipe (31); and the material delivery pipe (32) is fixedly mounted on the lower end of the material delivery pipe (32). ) is fixedly mounted on the upper end of the reaction kettle (1), the side end of the circular shaft (4) is fixedly mounted with a side rod (41), the valve plate (5) is located on the inner side wall of the material guide tube (31), the two side ends of the liquid storage tank (6) are fixedly mounted with L-shaped support rods (61), the liquid storage tank (6) is fixedly mounted on the upper end of the reaction kettle (1) through the L-shaped support rods (61), the top cover (7) is sleeved on the upper end of the liquid storage tank (6), the rotating disk (8) is located at the upper end of the top cover (7), and the receiving hopper (9) is rotatably mounted on the circumferential end of the liquid storage tank (6).

2. A reaction device for preparing anhydride curing agent for wind power as claimed in claim 1, characterized in that: The lower end of the reaction kettle (1) is provided with a discharge port (11), the upper end of the reaction kettle (1) is fixedly mounted with a vertical rod (12), and the side end of the vertical rod (12) is penetrated by a first circular groove (13); Wherein, the circular shaft (4) is rotatably mounted on the inner side wall of the first circular groove (13).

3. A reaction device for preparing anhydride curing agent for wind power as claimed in claim 2, characterized in that: A connecting rod (21) is fixedly mounted on the output end of the motor (2), a stirring rod (24) is fixedly mounted on the lower end of the connecting rod (21), and a first spur gear (22) is fixedly mounted on the circumferential end of the connecting rod (21); Wherein, a first conical tooth (23) is fixedly mounted on the lower end of the first flat gear (22).

4. A reaction device for preparing anhydride curing agent for wind power as claimed in claim 3, characterized in that: A C-shaped plate (33) is fixedly mounted on the side end of the guide tube (31), a second circular groove (34) is penetrated through the side end of the C-shaped plate (33), a plurality of first limiting holes (35) are also penetrated through the side end of the C-shaped plate (33), and a second conical tooth (44) is fixedly mounted on the circumferential end of the circular shaft (4); The second conical teeth (44) are meshed with the first conical teeth (23).

5. A reaction device for preparing anhydride curing agent for wind power as claimed in claim 4, characterized in that: A material receiving plate (42) is fixedly mounted on the side end of the side rod (41), the material receiving plate (42) is rotatably mounted on the inner side wall of the material guide tube (31), a material receiving groove (43) is provided on the upper end of the material receiving plate (42), a transmission rod (51) is fixedly mounted on the side end of the valve plate (5), the transmission rod (51) penetrates and is rotatably mounted on the side end of the material guide tube (31), a pull plate (54) is provided on the side end of the transmission rod (51), a first spring (53) is fixedly mounted between the pull plate (54) and the transmission rod (51), and a first telescopic rod (52) is also fixedly mounted between the pull plate (54) and the transmission rod (51); The first telescopic rod (52) is located on the inner side wall of the first spring (53), and a first limiting rod (55) is fixedly mounted on the side end of the pull plate (54).

6. A reaction device for preparing anhydride curing agent for wind power as claimed in claim 5, characterized in that: The lower end of the liquid storage tank (6) is provided with a plurality of liquid outlet grooves (62), the upper end of the top cover (7) is fixedly mounted with a feed pipe (71), the upper end of the top cover (7) is provided with a third circular groove (73), and the upper end of the top cover (7) is also provided with a plurality of second limiting holes (72) in an array.

7. A reaction device for preparing anhydride curing agent for wind power as claimed in claim 6, characterized in that: A vertical shaft (84) is provided at the lower end of the rotating disk (8), and the vertical shaft (84) penetrates and is rotatably mounted on the inner side wall of the third circular groove (73). A second spring (83) is fixedly mounted between the rotating disk (8) and the vertical shaft (84). A second telescopic rod (82) is also fixedly mounted between the rotating disk (8) and the vertical shaft (84), and the second telescopic rod (82) is located on the inner side wall of the second spring (83). A second limiting rod (81) is fixedly mounted at the lower end of the rotating disk (8).

8. A reaction device for preparing anhydride curing agent for wind power as claimed in claim 7, characterized in that: The end of the second limiting rod (81) is slidably mounted on the inner wall of the second limiting hole (72); a connecting piece (85) is fixedly mounted on the lower end of the vertical shaft (84); a plurality of guide rods (86) are fixedly mounted on the circumferential end of the connecting piece (85); and a shielding plate (87) is fixedly mounted on the side end of each guide rod (86).

9. A reaction device for preparing anhydride curing agent for wind power as claimed in claim 8, characterized in that: A fixed vertical pipe (94) is fixedly installed through the upper end of the reaction kettle (1), a fixed plate (91) is fixedly installed on the inner wall of the receiving hopper (9), a plurality of liquid guide grooves (92) are opened through the upper end of the fixed plate (91), the receiving hopper (9) is rotatably installed on the upper end of the fixed vertical pipe (94), a second spur gear (93) is provided at the circumferential end of the receiving hopper (9), and a toothed belt (95) is meshed between the second spur gear (93) and the first spur gear (22).

10. A process for using a reaction device for preparing anhydride curing agent for wind power, characterized in that: Here are the steps: S1: The user can put an appropriate amount of maleic anhydride into the storage tank (3) and inject methyl butadiene into the liquid storage tank (6); S2: The user can start the motor (2) first, and the motor (2) rotates to drive the receiving hopper (9) to rotate through the cooperation of the first flat gear (22) and the second flat gear (93). When the liquid guide groove (92) and the liquid outlet groove (62) in the receiving hopper (9) overlap, methyl butadiene can be added in small amounts and multiple times. S3: The user can drive the receiving plate (42) to rotate by cooperating with the first conical teeth (23) and the second conical teeth (44), and the maleic anhydride received by the receiving groove (43) in the receiving plate (42) will be reciprocated and added into the reaction kettle (1), so that maleic anhydride can be added in small amounts and multiple times; S4: The motor (2) drives the stirring rod (24) to rotate via the connecting rod (21), thereby mixing the maleic anhydride and methyl butadiene, thereby preparing the anhydride curing agent.

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