Polyamide 66 salt preparation mixing reaction device and reaction method thereof
By introducing a multi-layer feeding assembly, a stirring auxiliary assembly, and a turning assembly into the polyamide 66 salt preparation device, the problem of limited contact range when adipic acid and hexamethylenediamine are introduced simultaneously is solved, and a highly efficient neutralization reaction is achieved.
Patent Information
- Application Number
- CN202310654860.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- Filing Date
- 2023-06-05
- Publication Date
- 2025-11-18
- Estimated Expiration
- 2043-06-05
AI Technical Summary
In existing mixed reaction apparatuses for the preparation of polyamide 66 salts, the contact range of adipic acid and hexamethylenediamine is limited when they are introduced simultaneously, resulting in low neutralization efficiency. Furthermore, the reactants require time to penetrate to the lower part of the apparatus for continued neutralization, which further reduces the neutralization efficiency.
The system employs a multi-layer feeding assembly and a stirring auxiliary assembly. The reactants are introduced into the feeding cylinder by a high-pressure delivery pump, and the mixing is accelerated by an extrusion column and stirring wire. Combined with a turning assembly, the reactants are circulated and turned, which improves the contact area and mixing efficiency.
By designing a multi-layer feeding assembly and a stirring auxiliary assembly, the neutralization efficiency of adipic acid and hexamethylenediamine was significantly improved, the reaction time was shortened, and the effect of the mixing reaction was enhanced.
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Figure CN116492930B_ABST
Abstract
Description
Technical Field
[0001] This invention relates to the field of polyamide 66 salt preparation technology, and in particular to a mixing reaction apparatus and reaction method for preparing polyamide 66 salt. Background Technology
[0002] Polyamide 66, also known as polyhexamethylene adipamide or nylon 66, is a slightly yellow, translucent or milky white opaque thermoplastic resin with a relative density of 1.14–1.15 and a melting point of 259–267°C. It exhibits excellent wear resistance, oil resistance, and self-lubricating properties, and boasts the highest heat resistance, strength, and rigidity among aliphatic nylons. It is insoluble in common solvents, only soluble in m-cresol, and can be used as an engineering plastic; as mechanical accessories such as gears and lubricated bearings; as a substitute for non-ferrous metal materials in machine housings and automotive engine blades; and can also be used to manufacture synthetic plastics. Polyamide 66 salt is prepared from adipic acid and hexamethylenediamine, requiring neutralization treatment using a neutralization mixing reaction device during its preparation.
[0003] In existing mixing reactors for preparing polyamide 66 salts, adipic acid and hexamethylenediamine are typically introduced simultaneously into a neutralization reactor, followed by rapid neutralization and mixing via a stirring device. However, during the simultaneous introduction of adipic acid and hexamethylenediamine, their contact range is limited, resulting in a progressive contact. This leads to low neutralization efficiency. Adipic acid slowly dissolves into hexamethylenediamine, or vice versa, resulting in good initial neutralization. As adipic acid or hexamethylenediamine is continuously introduced, the adipic acid or hexamethylenediamine at the top needs time to penetrate to the bottom for further neutralization. This significantly reduces the neutralization efficiency and diminishes the usability of the mixing reactor for preparing polyamide 66 salts. Summary of the Invention
[0004] This invention discloses a mixing reaction apparatus for the preparation of polyamide 66 salt, aiming to solve the technical problem that during the simultaneous introduction of adipic acid and hexamethylenediamine, the contact range between the two is limited and the contact is progressive, which results in low neutralization efficiency. Adipic acid slowly dissolves into hexamethylenediamine, or hexamethylenediamine slowly dissolves into adipic acid, resulting in better initial contact and neutralization effect. However, as adipic acid or hexamethylenediamine is continuously introduced, the adipic acid or hexamethylenediamine located above needs time to penetrate into the lower part to continue the neutralization reaction, which leads to a significant reduction in neutralization efficiency.
[0005] To achieve the above objectives, the present invention adopts the following technical solution:
[0006] A mixing reaction apparatus for preparing polyamide 66 salt includes a neutralization tank. The top of the neutralization tank has a mounting hole, and a multi-layer feeding assembly is provided inside the mounting hole. The multi-layer feeding assembly includes a feeding cylinder that extends into the interior of the neutralization tank. The feeding cylinder is fixedly connected to the interior of the mounting hole. The feeding cylinder has outlet holes equidistantly located on its outer side inside the neutralization tank. Each outlet hole has an outlet frame fixedly connected inside, and each outlet frame has a ring of filling plates arranged in a triangular frame-like manner. The volume of the filling plates gradually increases from the opening end of the feeding cylinder to the outlet frame. Two mounting rods are fixedly connected to the outer side of the feeding cylinder near its top, and the tops of the two mounting rods are fixedly connected to the same top plate. A hydraulic cylinder is fixedly connected to the bottom of the top plate, and an extrusion column is fixedly connected to the output end of the hydraulic cylinder. The diameter of the extrusion column gradually increases from top to bottom.
[0007] By employing a multi-layer feeding assembly, after one reactant is introduced into the neutralization tank through a feeding frame, another reactant is conveyed to a long feeding cylinder via a high-pressure pump. This reactant is then discharged from multiple layers through a multi-layer discharge frame, thereby increasing the contact area between the two reactants per unit time and thus improving neutralization efficiency.
[0008] In a preferred embodiment, a high-pressure delivery pump is fixedly connected to the top of the neutralization tank near the feed cylinder, and a feed pipe is fixedly connected to the feed end of the high-pressure delivery pump, and a delivery pipe is fixedly connected to the liquid delivery end of the high-pressure delivery pump. A fixing ring is fixedly connected inside the feed cylinder, and the delivery pipe is fixedly connected inside the fixing ring.
[0009] In a preferred embodiment, the neutralization tank is equipped with stirring auxiliary components inside both ends of the feeding cylinder, and the stirring auxiliary components include stirring wires. A motor frame is fixedly connected to the outside of the neutralization tank, and a drive motor is fixedly connected to the outside of the motor frame. The output shaft of the drive motor is fixedly connected to a rotating shaft through a coupling. A shaft block is fixedly connected inside the neutralization tank near the rotating shaft. The other end of the rotating shaft is connected to the outside of the shaft block through a bearing. The stirring wires are distributed in a ring on the outside of the rotating shaft, and a connecting rod is fixedly connected to the outside of each stirring wire at equal distances. An impact head is fixedly connected to the other end of each connecting rod.
[0010] By incorporating a stirring aid component, after the reactants are discharged through the multi-layer feeding component, the stirring aid component stirs the reactants and the first reactants added, thereby accelerating the mixing reaction and further improving the neutralization efficiency.
[0011] In a preferred embodiment, the neutralization tank is provided with a tilting assembly inside the feed cylinder below it, and the tilting assembly includes a lifting arc frame. The neutralization tank is fixedly connected to a mounting base inside the feed cylinder below the lifting arc frame, and a hydraulic rod is fixedly connected to the side of the mounting base facing the lifting arc frame. The output end of the hydraulic rod is fixedly connected to the bottom of the lifting arc frame. Liquid-receiving curved panels are fixedly connected at equal intervals to the outer side of the lifting arc frame facing the feed cylinder, and outer rods are distributed in a ring on the outer side of the lifting arc frame. Slices are fixedly connected at equal intervals to the outer side of each outer rod.
[0012] In a preferred embodiment, the neutralization tank has two feed holes at the top, and feed frames are fixedly connected inside the two feed holes. The neutralization tank has a drain hole at the bottom, and a drain pipe is fixedly connected inside the drain hole. A pipe valve is connected to the outside of the drain pipe through a flange. Grounding seats are distributed in a ring on the outer side of the neutralization tank near the bottom.
[0013] By incorporating a flipping component, once the reactants are in the neutralization tank, the flipping component causes the reactants located below to flip to the top, thus forming a parabola that flips upwards from the center of the neutralization tube towards both ends, further improving the efficiency of the mixing reaction of the two reactants.
[0014] A reaction method for preparing polyamide 66 salt using a mixing reaction apparatus, applied to the aforementioned mixing reaction apparatus for preparing polyamide salt, the reaction method comprising the following steps:
[0015] S1: After one reactant is introduced into the neutralization tank through the feed frame, another reactant is transported to the feed cylinder through the high-pressure conveying pump. The hydraulic cylinder is adjusted to drive the extrusion column to extrude the reactant located in the feed cylinder, so that the reactant is quickly discharged through the discharge frame.
[0016] S2: The moment the two reactants come into contact, the drive motor is started. The drive motor drives the stirring wire on the rotating shaft to quickly stir the two reactants. At the same time, the impact head on each connecting rod has a high-frequency impact effect on the reactants. The impact of the impact head makes the reactants oscillate, which works in conjunction with the stirring of the stirring wire.
[0017] S3: During the neutralization process of the reactants, the hydraulic rod is adjusted to drive the ejector frame to push the reactants inside the neutralization tank, so that the reactants located at the bottom are pushed to the top. The liquid-receiving curved panel plays a supporting and driving role. The reactants near the center point move upward, and the reactants on both sides quickly fill the middle and lower position, thus forming a cycle of flipping.
[0018] As can be seen from the above, the mixing reaction apparatus for preparing polyamide 66 salt provided by the present invention has the technical effect of increasing the contact area of the mixture per unit time and thus improving the neutralization efficiency after one reactant is introduced into the neutralization tank through the feed frame and another reactant is transported to the feed cylinder through the high-pressure conveying pump and the reactant is discharged from multiple layers through the multi-layer discharge frame. Attached Figure Description
[0019] Figure 1 This is a schematic diagram of the overall structure of a mixing reaction apparatus for preparing polyamide 66 salt proposed in this invention.
[0020] Figure 2 This is a schematic diagram of the internal structure of the neutralization tank of a mixing reaction apparatus for preparing polyamide 66 salt according to the present invention.
[0021] Figure 3 This is a schematic diagram of a multi-layer feeding assembly of a mixing reaction device for preparing polyamide 66 salt according to the present invention.
[0022] Figure 4 for Figure 3 A partial structural cross-sectional view.
[0023] Figure 5 This is a schematic diagram of the stirring auxiliary component of a mixing reaction apparatus for preparing polyamide 66 salt according to the present invention.
[0024] Figure 6 This is a schematic diagram of the flipping component of a mixing reaction apparatus for preparing polyamide 66 salt according to the present invention.
[0025] Figure 7 for Figure 6 A schematic diagram of the planar structure.
[0026] In the diagram: 1. Neutralization tank; 2. Feed frame; 3. Multi-layer feed assembly; 301. Feed cylinder; 302. High-pressure conveying pump; 303. Mounting rod; 304. Feed pipe; 305. Top plate; 306. Hydraulic cylinder; 307. Outlet frame; 308. Conveying pipe; 309. Extrusion column; 310. Filling plate; 311. Fixing ring; 4. Stirring auxiliary assembly; 401. Drive motor; 402. Motor frame; 403. Stirring wire; 404. Rotating shaft; 405. Connecting rod; 406. Shaft block; 407. Impact head; 5. Grounding seat; 6. Tilting assembly; 601. Slicing plate; 602. Lifting arc frame; 603. Liquid-receiving curved panel; 604. Outer rod; 605. Hydraulic rod; 606. Mounting seat; 7. Drain pipe; 8. Pipe valve. Detailed Implementation
[0027] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.
[0028] The mixed reaction apparatus for preparing polyamide 66 salt disclosed in this invention is mainly used in the process of simultaneous introduction of adipic acid and hexamethylenediamine. The contact range between the two is limited and it is a progressive contact, which will result in a low neutralization efficiency between the two. Adipic acid slowly dissolves into hexamethylenediamine, or hexamethylenediamine slowly dissolves into adipic acid. The initial contact neutralization effect is better. As adipic acid or hexamethylenediamine is continuously introduced, the adipic acid or hexamethylenediamine located above needs time to penetrate into the lower part, so as to continue the neutralization reaction.
[0029] Reference Figures 1-7 A mixing reaction apparatus for preparing polyamide 66 salt includes a neutralization tank 1. The top of the neutralization tank 1 has a mounting hole, and a multi-layer feeding assembly 3 is provided inside the mounting hole. The multi-layer feeding assembly 3 includes a feeding elongated cylinder 301 that extends into the interior of the neutralization tank 1. The feeding elongated cylinder 301 is fixedly connected to the interior of the mounting hole. The feeding elongated cylinder 301 has outlet holes evenly spaced on its outer side inside the neutralization tank 1. Each outlet hole has an outlet frame 307 fixedly connected inside it. Each outlet frame 307 contains... A ring of filling plates 310 are arranged in a triangular shape. The volume of the filling plates 310 gradually increases from the feed cylinder 301 to the opening end of the outlet frame 307. Two mounting rods 303 are fixedly connected to the outer side of the feed cylinder 301 near the top. The top of the two mounting rods 303 is fixedly connected to the same top plate 305. A hydraulic cylinder 306 is fixedly connected to the bottom of the top plate 305. An extrusion column 309 is fixedly connected to the output end of the hydraulic cylinder 306. The diameter of the extrusion column 309 gradually increases from top to bottom.
[0030] Specifically, during reactant transport, the reactants are introduced into the feed cylinder 301 via a high-pressure pump 302. Then, the hydraulic cylinder 306 drives the extrusion column 309 to extrude the reactants in the feed cylinder 301, causing the reactants to be quickly discharged through the discharge frame 307. The diameter of the extrusion column 309 gradually increases from top to bottom. The different heights of the discharge frame 307 result in different extrusion forces on the reactants inside. During the downward pressing of the extrusion column 309, the larger its outer diameter, the smaller the gap between it and the feed cylinder 301, thus increasing the extrusion force on the reactants and ensuring that the reactants are quickly discharged through the discharge frame 307 during the extrusion process of the extrusion column 309.
[0031] In specific application scenarios, during the process of the reactants being discharged from the discharge box 307, the filling plate 310 restricts the reactants. The gap between each pair of adjacent filling plates 310 decreases from large to small relative to the flow direction of the reactants. This results in the reactants having a large impact force at the moment they are discharged from the discharge box 307, which accelerates their flow in the other reactant in the neutralization tank 1, improves the degree of mixing, and thus speeds up the neutralization process.
[0032] It should be noted that after one reactant is introduced into the neutralization tank 1 through the feed frame 2, another reactant is transported to the feed cylinder 301 through the high-pressure transfer pump 302. The reactant is then discharged from multiple layers through the multi-layer discharge frame 307, thereby increasing the contact area of the mixture per unit time and thus improving the neutralization efficiency.
[0033] Reference Figures 1-4 In a preferred embodiment, a high-pressure delivery pump 302 is fixedly connected to the top of the neutralization tank 1 near the feed cylinder 301, and a feed pipe 304 is fixedly connected to the feed end of the high-pressure delivery pump 302, and a delivery pipe 308 is fixedly connected to the liquid delivery end of the high-pressure delivery pump 302. A fixing ring 311 is fixedly connected inside the feed cylinder 301, and the delivery pipe 308 is fixedly connected inside the fixing ring 311.
[0034] Reference Figure 1 , Figure 2 and Figure 5 In a preferred embodiment, the neutralization tank 1 is equipped with stirring auxiliary components 4 at both ends of the feeding cylinder 301, and the stirring auxiliary components 4 include stirring wires 403. A motor frame 402 is fixedly connected to the outside of the neutralization tank 1, and a drive motor 401 is fixedly connected to the outside of the motor frame 402. The output shaft of the drive motor 401 is fixedly connected to a rotating shaft 404 through a coupling. A shaft block 406 is fixedly connected to the inside of the neutralization tank 1 near the rotating shaft 404. The other end of the rotating shaft 404 is connected to the outside of the shaft block 406 through a bearing. The stirring wires 403 are distributed in a ring on the outside of the rotating shaft 404, and a connecting rod 405 is fixedly connected at equal distances to the outside of each stirring wire 403. An impact head 407 is fixedly connected to the other end of each connecting rod 405.
[0035] Specifically, at the instant the two reactants come into contact, the drive motor 401 is activated, and the drive motor 401 drives the stirring wire 403 on the rotating shaft 404 to quickly stir the two reactants, thereby accelerating the neutralization reaction process of the reactants.
[0036] In specific application scenarios, when the drive motor 401 drives the stirring wire 403 to rapidly stir the reactants, the impact head 407 on each connecting rod 405 has a high-frequency impact effect on the reactants. The impact of the impact head 407 causes the reactants to be in a state of oscillation, which, in conjunction with the stirring of the stirring wire 403, further increases the movement rate of the reactants and accelerates the progress of the neutralization reaction.
[0037] It should be noted that after the reactants are discharged through the multi-layer feed assembly 3, the stirring auxiliary assembly 4 stirs the reactants and the reactants added first, thereby accelerating the mixing reaction and further improving the neutralization efficiency.
[0038] Reference Figure 1 , Figure 2 , Figure 6 and Figure 7 In a preferred embodiment, the neutralization tank 1 is provided with a flipping assembly 6 inside below the feed cylinder 301, and the flipping assembly 6 includes a lifting arc frame 602. The neutralization tank 1 is fixedly connected to a mounting base 606 inside below the lifting arc frame 602, and a hydraulic rod 605 is fixedly connected to the side of the mounting base 606 facing the lifting arc frame 602. The output end of the hydraulic rod 605 is fixedly connected to the bottom of the lifting arc frame 602. Liquid-receiving curved panels 603 are fixedly connected at equal intervals to the outer side of the lifting arc frame 602 facing the feed cylinder 301, and outer rods 604 are distributed in a ring on the outer side of the lifting arc frame 602. Slices 601 are fixedly connected at equal intervals to the outer side of each outer rod 604.
[0039] Specifically, during the neutralization process, the hydraulic rod 605 is adjusted to drive the ejector frame to push the reactants inside the neutralization tank 1, causing the reactants located at the bottom to be pushed to the top. The liquid-receiving curved panel 603 plays a supporting and driving role. The reactants near the center point move upward, and the reactants on both sides quickly fill the lower middle position, thus forming a cycle of flipping and accelerating the neutralization process.
[0040] In specific application scenarios, when the ejector frame pushes the reactants, the reactants located at the top flip down, and the slicing pieces 601 on each outer rod 604 have a cutting and mixing effect on the reactants, further improving the degree of mixing between the reactants.
[0041] It should be noted that after the reactants are placed in the neutralization tank 1, the flipping component 6 causes the reactants located below to be flipped to the top, thereby forming a parabola that flips from the center of the neutralization tube to both ends, further improving the efficiency of the mixing reaction of the two reactants.
[0042] Reference Figure 1 and Figure 2The neutralization tank 1 has two feed holes at the top, and feed frames 2 are fixedly connected inside the two feed holes. The neutralization tank 1 has a drain hole at the bottom, and a drain pipe 7 is fixedly connected inside the drain hole. A pipe valve 8 is connected to the outside of the drain pipe 7 through a flange. Grounding seats 5 are distributed in a ring on the outer side of the neutralization tank 1 near the bottom.
[0043] A reaction method for a mixing reaction apparatus for preparing polyamide salts, applied to the aforementioned mixing reaction apparatus for preparing polyamide salts, includes the following steps:
[0044] S1: After one reactant is introduced into the neutralization tank 1 through the feed frame 2, another reactant is transported to the feed cylinder 301 through the high-pressure conveying pump 302. The hydraulic cylinder 306 is adjusted to drive the extrusion column 309 to extrude the reactant in the feed cylinder 301, so that the reactant is quickly discharged through the discharge frame 307.
[0045] S2: At the moment the two reactants come into contact, the drive motor 401 is started. The drive motor 401 drives the stirring wire 403 on the rotating shaft 404 to quickly stir the two reactants. At the same time, the impact head 407 on each connecting rod 405 has a high-frequency impact effect on the reactants. The impact of the impact head 407 makes the reactants oscillate, which works in conjunction with the stirring of the stirring wire 403.
[0046] S3: During the neutralization process of the reactants, the hydraulic rod 605 is adjusted to drive the ejector arc frame to push the reactants inside the neutralization tank 1, so that the reactants located at the bottom are pushed to the top. The liquid-receiving curved panel 603 plays a supporting and driving role. The reactants near the center point move upward, and the reactants on both sides quickly fill the middle and lower position, thus forming a cycle of flipping.
[0047] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.
Claims
1. A mixing reaction apparatus for preparing polyamide 66 salt, comprising a neutralization tank (1), characterized in that, The neutralization tank (1) has an installation hole at its top, and a multi-layer feeding assembly (3) is provided inside the installation hole. The multi-layer feeding assembly (3) includes a feeding cylinder (301) that extends into the interior of the neutralization tank (1). The feeding cylinder (301) is fixedly connected to the interior of the installation hole, and the feeding cylinder (301) has outlet holes at equal intervals on its outer side inside the neutralization tank (1). Each outlet hole is fixedly connected to an outlet frame (307), and each outlet frame (307) has a filling plate (310) arranged in a ring inside. The filling plate (310) is a tripod-like structure. The volume of the filling plate (310) gradually increases from the feed cylinder (301) to the opening end of the outlet frame (307). Two mounting rods (303) are fixedly connected to the outer side of the feed cylinder (301) near the top. The top of the two mounting rods (303) is fixedly connected to the same top plate (305). The bottom of the top plate (305) is fixedly connected to a hydraulic cylinder (306). The output end of the hydraulic cylinder (306) is fixedly connected to an extrusion column (309). The diameter of the extrusion column (309) gradually increases from top to bottom.
2. The mixing reaction apparatus for preparing polyamide 66 salt according to claim 1, characterized in that, The neutralization tank (1) is fixedly connected to a high-pressure delivery pump (302) near the top of the feed cylinder (301), and the feed end of the high-pressure delivery pump (302) is fixedly connected to a feed pipe (304), the liquid delivery end of the high-pressure delivery pump (302) is fixedly connected to a delivery pipe (308), a fixing ring (311) is fixedly connected inside the feed cylinder (301), and the delivery pipe (308) is fixedly connected inside the fixing ring (311).
3. The mixing reaction apparatus for preparing polyamide 66 salt according to claim 2, characterized in that, The neutralization tank (1) is equipped with stirring auxiliary components (4) at both ends of the feed cylinder (301), and the stirring auxiliary components (4) include stirring wires (403).
4. The mixing reaction apparatus for preparing polyamide 66 salt according to claim 3, characterized in that, A motor frame (402) is fixedly connected to the outside of the neutralization tank (1), and a drive motor (401) is fixedly connected to the outside of the motor frame (402). The output shaft of the drive motor (401) is fixedly connected to a rotating shaft (404) through a coupling. A shaft block (406) is fixedly connected inside the neutralization tank (1) near the rotating shaft (404). The other end of the rotating shaft (404) is connected to the outside of the shaft block (406) through a bearing.
5. The mixing reaction apparatus for preparing polyamide 66 salt according to claim 4, characterized in that, The stirring wires (403) are distributed in a ring on the outside of the rotating shaft (404), and each stirring wire (403) is fixedly connected to a connecting rod (405) at equal distances on the outside. The other end of each connecting rod (405) is fixedly connected to an impact head (407).
6. The mixing reaction apparatus for preparing polyamide 66 salt according to claim 5, characterized in that, The neutralization tank (1) is provided with a flipping assembly (6) inside the feed cylinder (301), and the flipping assembly (6) includes a lifting arc frame (602).
7. The mixing reaction apparatus for preparing polyamide 66 salt according to claim 6, characterized in that, The neutralization tank (1) is fixedly connected to a mounting base (606) inside the lifting arc frame (602), and a hydraulic rod (605) is fixedly connected to the side of the mounting base (606) facing the lifting arc frame (602). The output end of the hydraulic rod (605) is fixedly connected to the bottom of the lifting arc frame (602).
8. The mixing reaction apparatus for preparing polyamide 66 salt according to claim 7, characterized in that, The lifting arc frame (602) is fixedly connected to the liquid-receiving curved panel (603) at equal intervals on the outer side facing the feed cylinder (301), and the outer side of the lifting arc frame (602) is circumferentially distributed with outer rods (604), and each outer rod (604) is fixedly connected to a segmented slice (601) at equal intervals on the outer side.
9. The mixing reaction apparatus for preparing polyamide 66 salt according to claim 8, characterized in that, The neutralization tank (1) has two feed holes at the top, and feed frames (2) are fixedly connected inside the two feed holes. The neutralization tank (1) has a drain hole at the bottom, and a drain pipe (7) is fixedly connected inside the drain hole. A pipe valve (8) is connected to the outside of the drain pipe (7) through a flange. Grounding seats (5) are distributed in a ring on the outside of the neutralization tank (1) near the bottom.
10. A reaction method for a mixing reaction apparatus for preparing polyamide 66 salt, applied to the mixing reaction apparatus for preparing polyamide 66 salt as described in claim 9, characterized in that, The reaction method includes the following steps: S1: After one reactant is introduced into the neutralization tank (1) through the feed frame (2), another reactant is transported to the feed cylinder (301) through the high pressure pump (302). The hydraulic cylinder (306) is adjusted to drive the extrusion column (309) to extrude the reactant in the feed cylinder (301), so that the reactant is quickly discharged through the discharge frame (307). S2: At the moment the two reactants come into contact, the drive motor (401) is started. The drive motor (401) drives the stirring wire (403) on the rotating shaft (404) to stir the two reactants quickly. At the same time, the impact head (407) on each connecting rod (405) has a high-frequency impact effect on the reactants. The impact of the impact head (407) makes the reactants oscillate, which works in conjunction with the stirring of the stirring wire (403). S3: During the neutralization of reactants, the hydraulic rod (605) is adjusted to drive the ejector arc frame to push the reactants inside the neutralization tank (1), so that the reactants located at the bottom are pushed to the top. The liquid-receiving curved panel (603) plays a supporting and driving role. The reactants near the center point move upward, and the reactants on both sides quickly fill the middle lower position, thus forming a cycle of flipping.
Citation Information
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