High-pressure dehydrogenation kettle for producing iminodiacetic acid

Abstract

The utility model relates to the technical field of dehydrogenation production, in particular to a high-pressure dehydrogenation kettle for producing iminodiacetic acid, which comprises a kettle main body, the kettle main body comprises a lower kettle shell and an upper kettle shell, a support is assembled on the side edge of the lower kettle shell in a supporting manner, and a pressurizing butt joint seat and a pressure relief exhaust valve are assembled on the two sides of the left side of the upper part of the upper kettle shell. A feeding seat is assembled at the top of the upper kettle shell, a discharging seat is assembled at the bottom of the lower kettle shell, a stirring transverse shaft is transversely inserted in the middle of the kettle main body, a stirring frame is assembled on the inner side of the stirring transverse shaft, and a transmission drum sleeves the left side of the stirring transverse shaft and is inserted in the left side wall of the kettle main body in a penetrating manner; and a scraping frame is assembled in the transmission rotary drum. The reaction kettle is convenient for pressurizing and stirring according to requirements to promote rapid reaction and scratch the kettle wall, and raw materials are not easy to adhere to the kettle wall, so that the reaction kettle is more convenient and efficient to use.

Description

Technical Field

[0001] The utility model relates to the technical field of production dehydrogenation, in particular to a high-pressure dehydrogenation kettle for the production of iminodiacetic acid. Background Art

[0002] Iminodiacetate is mainly used as an intermediate for the production of synthetic herbicide glyphosate, a widely used chelating agent, and a raw material for chelating ion exchange resins, such as in the electroplating, chemical plating, or water treatment industries. There are many production and preparation methods, such as using skeleton copper containing molybdenum and nickel as a catalyst, and using diethanolamine and alkali metal hydroxide as raw materials to prepare iminodiacetic acid; dehydrogenation is required during the preparation;

[0003] However, the existing dehydrogenation device for producing iminodiacetic acid is inconvenient to perform pressurized stirring to promote rapid reaction and scrape the kettle wall as needed, which easily causes the raw materials to stick to the kettle wall, affecting the preparation efficiency;

[0004] Therefore, in order to solve the above problems, a high-pressure dehydrogenation reactor for the production of iminodiacetic acid is proposed. Utility Model Content

[0005] The utility model aims to provide a high-pressure dehydrogenation kettle for the production of iminodiacetic acid, so as to solve the problem that the existing dehydrogenation device for producing and preparing iminodiacetic acid mentioned in the above background technology is inconvenient to scrape the kettle wall synchronously while performing pressurized stirring to promote rapid reaction as needed, which easily causes raw materials to stick to the kettle wall and affects the preparation efficiency.

[0006] To achieve the above object, the utility model provides the following technical solution: a high-pressure dehydrogenation kettle for the production of iminodiacetic acid, comprising a kettle body, wherein the kettle body comprises a lower kettle shell and an upper kettle shell, and the side support of the lower kettle shell is equipped with a bracket;

[0007] The left and right sides of the upper part of the upper kettle shell are equipped with a pressurized docking seat and a pressure relief exhaust valve, the top of the upper kettle shell is equipped with a feed seat, the bottom of the lower kettle shell is equipped with a discharge seat, a stirring horizontal axis is horizontally inserted in the middle of the kettle body, a stirring frame is installed on the inner side of the stirring horizontal axis, a transmission drum is sleeved on the left side of the stirring horizontal axis, the transmission drum is inserted through and installed on the left side wall of the kettle body, and a scraping frame is installed inside the transmission drum.

[0008] Preferably, a servo motor is connected to the right side of the stirring horizontal shaft through a coupling, and the servo motor is mounted on the right outer wall of the kettle body. The outer walls of the stirring horizontal shaft and one end of the transmission drum extending to the outside of the kettle body are both provided with assembly clamps, and the outside of the assembly clamps is provided with assembly sleeves, and the assembly sleeves are fixed to the outer walls on both sides of the kettle body.

[0009] Preferably, a transmission gear 1 is fixed to the left end of the stirring horizontal shaft, a driven gear 1 is meshed at the lower end of the transmission gear, a driven shaft is fixed to the middle of the driven gear 1, a transmission gear 2 is mounted on the right side of the driven shaft, a driven gear 2 is meshed at the upper end of the transmission gear 2, the driven gear 2 is fixed to the left end of the transmission drum, bearing seats are mounted at both ends of the driven shaft, a support seat is supported at the bottom of the bearing seat, and the support seat is mounted on the left outer wall of the bracket.

[0010] Preferably, the cross section of the stirring frame is a regular decagon, and each side of the stirring frame is equipped with a stirring paddle.

[0011] Preferably, the scraper frame is annularly fitted to the inner wall of the kettle body, and an inner bearing is installed inside the right side of the scraper frame. The inner ring of the inner bearing is mounted on the surface of the stirring horizontal axis. An assembly seal ring is provided on the side of the inner bearing, and the assembly seal ring is assembled to the inner wall of the right side of the scraper frame by bolts.

[0012] Preferably, a pressure measuring assembly is inserted inside the feed seat, a probe is installed at the bottom of the pressure measuring assembly, an assembly cap corresponding to the feed seat is fixed on the top of the pressure measuring assembly, the assembly cap is threadedly mounted on the upper end of the feed seat, a pointer meter is installed on the upper part of the assembly cap, and the pointer meter is electrically connected to the pressure measuring assembly through a wire.

[0013] Preferably, a sealing sleeve is filled between the outside of the pressure measuring component and the inner wall of the feed seat, and the sealing sleeve is wrapped and fixed on the outer wall of the pressure measuring component. A locking pin is threadedly inserted at the lower end of the outer wall of the assembly cap, and the inner end of the locking pin is clamped on the outer wall of the feed seat. The outer wall of the feed seat is integrally provided with a limiting frame corresponding to the locking pin.

[0014] Preferably, a blocking cap is provided on the threaded sleeve at the lower part of the discharge seat, a twist block is integrally provided at the bottom of the blocking cap, the cross section of the twist block is hexagonal, and insertion holes are crisscrossed inside the twist block.

[0015] Compared with the prior art, the utility model has the following beneficial effects: the utility model is convenient for pressurized stirring to promote rapid reaction and scrape the kettle wall as needed, and is not easy to cause raw materials to stick to the kettle wall, making the use more convenient and efficient;

[0016] 1. The utility model is provided with a stirring horizontal axis, which, in cooperation with a stirring frame, facilitates stirring inside the kettle body to accelerate the reaction efficiency of the raw materials and the catalyst, making the use more convenient and efficient. Through this design, the convenience and practicality of the high-pressure dehydrogenation kettle for the production of iminodiacetic acid are improved.

[0017] 2. The utility model is provided with a transmission drum, which, in cooperation with a scraping frame, facilitates scraping the inner wall of the kettle body, so that the raw materials are not easily left on the inner wall of the kettle body, which facilitates full reaction and dehydrogenation, making it more convenient to use. Through this design, the convenience and practicality of the high-pressure dehydrogenation kettle for the production of iminodiacetic acid are improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of a front cross-section of the structure of the utility model;

[0019] Figure 2 It is a schematic side view of the structure of the utility model;

[0020] Figure 3 For this utility model Figure 1 A schematic diagram of the structure enlargement in the middle;

[0021] Figure 4 For this utility model Figure 1 A magnified schematic diagram of the structure at B in the middle;

[0022] Figure 5 For this utility model Figure 1 A magnified schematic diagram of the structure at C in the middle;

[0023] In the figure: 100, kettle body; 101, lower kettle shell; 102, upper kettle shell; 103, bracket; 110, pressurized docking seat; 120, pressure relief exhaust valve; 130, feed seat; 131, limit frame; 140, discharge seat; 141, blocking cap; 142, twist block; 143, jack; 200, stirring horizontal axis; 201, coupling; 202, servo motor; 203, assembly clamp ring; 204, assembly sleeve; 210, stirring frame; 220, stirring paddle; 300, transmission drum; 301, transmission gear 1; 302, driven gear 1; 303, driven shaft; 304, transmission gear 2; 305, driven gear 2; 306, bearing seat; 307, support seat; 310, scraper frame; 320, inner bearing; 321, assembly seal; 400, pressure measuring assembly; 401, probe; 402, sealing sleeve; 410, assembly cap; 411, locking pin; 420, pointer meter. DETAILED DESCRIPTION

[0024] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0025] See also Figure 1-5, an embodiment provided by the utility model:

[0026] A high-pressure dehydrogenation kettle for producing iminodiacetic acid, comprising a kettle body 100, wherein the kettle body 100 comprises a lower kettle shell 101 and an upper kettle shell 102, and a bracket 103 is mounted on the side support of the lower kettle shell 101;

[0027] The upper left and right sides of the upper kettle shell 102 are equipped with a pressurized docking seat 110 and a pressure relief exhaust valve 120, the top of the upper kettle shell 102 is equipped with a feed seat 130, the bottom of the lower kettle shell 101 is equipped with a discharge seat 140, the middle of the kettle body 100 is horizontally inserted with a stirring horizontal axis 200, the inner side of the stirring horizontal axis 200 is equipped with a stirring frame 210, the left side of the stirring horizontal axis 200 is sleeved with a transmission drum 300, the transmission drum 300 is inserted through and installed on the left side wall of the kettle body 100, and the transmission drum 300 is equipped with a scraping frame 310 inside;

[0028] Furthermore, a servo motor 202 is connected to the right side of the stirring horizontal shaft 200 through a coupling 201, and the servo motor 202 is assembled on the right outer wall of the kettle body 100. The outer walls of one end of the stirring horizontal shaft 200 and the transmission drum 300 extending to the outside of the kettle body 100 are sleeved with an assembly collar 203, and an assembly sleeve 204 is sleeved outside the assembly collar 203. The assembly sleeve 204 is fixed to the outer walls on both sides of the kettle body 100. Through this design, the stirring horizontal shaft 200 and the transmission drum 300 are easily driven stably, making subsequent use more convenient;

[0029] Further, a transmission gear 1 301 is fixed to the left end of the stirring horizontal shaft 200, a driven gear 1 302 is meshed at the lower end of the transmission gear 1 301, a driven shaft 303 is fixed to the middle of the driven gear 1 302, a transmission gear 2 304 is mounted on the right side of the driven shaft 303, a driven gear 2 305 is meshed at the upper end of the transmission gear 2 304, the driven gear 2 305 is fixed to the left end of the transmission drum 300, bearing seats 306 are mounted at both ends of the driven shaft 303, a support seat 307 is supported at the bottom of the bearing seat 306, and the support seat 307 is mounted on the left outer wall of the bracket 103. Through this design, it is convenient for the stirring horizontal shaft 200 to rotate while synchronously driving the transmission drum 300 to rotate;

[0030] Furthermore, the cross section of the stirring frame 210 is a regular decagon, and each side of the stirring frame 210 is equipped with a stirring paddle 220. This design facilitates sufficient stirring of the interior of the kettle body 100.

[0031] Furthermore, the scraper frame 310 is annularly attached to the inner wall of the kettle body 100, and an inner bearing 320 is installed inside the right side of the scraper frame 310. The inner ring of the inner bearing 320 is sleeved and installed on the surface of the stirring horizontal shaft 200. The side of the inner bearing 320 is provided with an assembly seal 321, and the assembly seal 321 is assembled to the right inner wall of the scraper frame 310 by bolts. Through this design, it is easy to support and rotate the side of the scraper frame 310 away from the transmission drum 300, making it more convenient to use.

[0032] Further, a pressure measuring assembly 400 is inserted inside the feed seat 130, a probe 401 is installed at the bottom of the pressure measuring assembly 400, an assembly cap 410 corresponding to the feed seat 130 is fixed to the top of the pressure measuring assembly 400, the assembly cap 410 is threadedly sleeved and assembled on the upper end of the feed seat 130, and a pointer meter 420 is installed on the upper part of the assembly cap 410, and the pointer meter 420 is electrically connected to the pressure measuring assembly 400 through a wire. Through this design, it is convenient to detect the pressure inside the kettle body 100, making subsequent use safer;

[0033] Furthermore, a sealing sleeve 402 is filled between the outside of the pressure measuring assembly 400 and the inner wall of the feed seat 130, and the sealing sleeve 402 is wrapped and fixed on the outer wall of the pressure measuring assembly 400. A locking pin 411 is threadedly inserted at the lower end of the outer wall of the assembly cap 410, and the inner end of the locking pin 411 is clamped on the outer wall of the feed seat 130. A limiting frame 131 corresponding to the locking pin 411 is integrally provided on the outer wall of the feed seat 130. Through this design, it is convenient to fix the assembly cap 410 to an auxiliary position, which is convenient for subsequent stable use.

[0034] Furthermore, a blocking cap 141 is threadedly sleeved at the lower part of the discharge seat 140, and a twist block 142 is integrally provided at the bottom of the blocking cap 141. The cross-section of the twist block 142 is hexagonal, and holes 143 are crisscrossed inside the twist block 142. Through this design, auxiliary material discharge and sealing of the lower part of the kettle body 100 are facilitated.

[0035] Working principle: When it is necessary to prepare iminodiacetic acid and use a high-pressure dehydrogenation kettle for dehydrogenation reaction, the raw materials and catalysts are put into the kettle body 100 through the feed seat 130, and then the assembly cap 410 is threadedly sleeved on the upper part of the feed seat 130, so that the pressure measuring component 400 is convenient to carry the probe 401 to insert into the kettle body 100, which is convenient for pressure detection inside the kettle, and then the pressure device is docked through the pressurization docking seat 110 for pressurization, which is convenient for high-pressure dehydrogenation. Further, under high pressure, when the raw materials and the catalyst are dehydrogenated by reaction, the stirring horizontal shaft 200 is driven to rotate by the working rotation of the servo motor 202, so that the stirring horizontal shaft 200 drives the stirring with the cooperation of the stirring frame 210. The stirring paddle 220 fully stirs the interior of the kettle body 100. At the same time, with the cooperation of the transmission gear 1 301, the driven gear 1 302, the driven shaft 303 and the transmission gear 2 304, it is convenient to synchronously drive the transmission drum 300 to rotate, so that the transmission drum 300 drives the scraper frame 310 to scrape the inner wall of the kettle body 100, which makes it difficult for the raw materials to remain on the inner wall of the kettle body 100, facilitates the full reaction of the raw materials and the catalyst, and makes the reaction operation more convenient. Furthermore, after the reaction is completed, after hydraulic exhaust through the pressure relief exhaust valve 120, the blocking cap 141 is unscrewed with the cooperation of the twist block 142 and the socket 143, so as to facilitate the discharge of materials through the discharge seat 140, and the operation ends here.

[0036] It should be noted that in the present application, the connection and specific connection structure of the pressure measuring assembly 400, the probe 401 and the pointer meter 420 and the detection principle are all prior art, and the associated words such as assembly connection in the present application are common knowledge to those skilled in the art, and can be implemented through a variety of implementation methods, and no other special requirements are made in the present application, as long as it can realize the functions in the present application, so no specific limitation is made here;

[0037] The above description is only a preferred embodiment of the utility model and does not limit the utility model in any form. Any ordinary technician in the industry can smoothly implement the utility model as shown in the drawings of the specification and described above. However, any equivalent changes, modifications and evolutions made by technicians familiar with the profession without departing from the scope of the technical solution of the utility model using the technical content disclosed above are all equivalent embodiments of the utility model. At the same time, any equivalent changes, modifications and evolutions made to the above embodiments based on the essential technology of the utility model are still within the protection scope of the technical solution of the utility model.

Claims

1. A high-pressure dehydrogenation kettle for producing iminodiacetic acid, comprising a kettle body (100), wherein the kettle body (100) comprises a lower kettle shell (101) and an upper kettle shell (102), and the side support of the lower kettle shell (101) is equipped with a bracket (103); Features: The upper left and right sides of the upper kettle shell (102) are equipped with a pressurized docking seat (110) and a pressure relief exhaust valve (120); the top of the upper kettle shell (102) is equipped with a feeding seat (130); the bottom of the lower kettle shell (101) is equipped with a discharging seat (140); a stirring horizontal axis (200) is inserted and installed in the middle of the kettle body (100); a stirring frame (210) is installed inside the stirring horizontal axis (200); a transmission drum (300) is sleeved on the left side of the stirring horizontal axis (200); the transmission drum (300) is inserted and installed on the left side wall of the kettle body (100); and a scraping frame (310) is installed inside the transmission drum (300).

2. The high-pressure dehydrogenation autoclave for producing iminodiacetic acid according to claim 1, characterized in that: The right side of the stirring transverse axis (200) is connected to a servo motor (202) via a coupling (201); the servo motor (202) is mounted on the right outer wall of the kettle body (100); the outer walls of one end of the stirring transverse axis (200) and the transmission drum (300) extending to the outside of the kettle body (100) are both sleeved with an assembly clamping ring (203); the outer side of the assembly clamping ring (203) is sleeved with an assembly clamping sleeve (204); the assembly clamping sleeve (204) is fixed to the outer walls of both sides of the kettle body (100).

3. The high-pressure dehydrogenation autoclave for producing iminodiacetic acid according to claim 1, characterized in that: A transmission gear 1 (301) is fixed to the left end of the stirring horizontal shaft (200), a driven gear 1 (302) is meshed at the lower end of the transmission gear 1 (301), a driven shaft (303) is fixed in the middle of the driven gear 1 (302), a transmission gear 2 (304) is mounted on the right side of the driven shaft (303), a driven gear 2 (305) is meshed at the upper end of the transmission gear 2 (304), the driven gear 2 (305) is fixed to the left end of the transmission drum (300), bearing seats (306) are mounted at both ends of the driven shaft (303), a support seat (307) is supported at the bottom of the bearing seat (306), and the support seat (307) is mounted on the left outer wall of the bracket (103).

4. The high-pressure dehydrogenation autoclave for producing iminodiacetic acid according to claim 1, characterized in that: The stirring frame (210) has a cross-section in the form of a regular decagon, and each side of the stirring frame (210) is equipped with a stirring paddle (220).

5. The high-pressure dehydrogenation autoclave for producing iminodiacetic acid according to claim 1, characterized in that: The scraper frame (310) is annularly fitted on the inner wall of the kettle body (100), and an inner bearing (320) is installed inside the right side of the scraper frame (310). The inner ring of the inner bearing (320) is sleeved and installed on the surface of the stirring horizontal shaft (200). The side of the inner bearing (320) is provided with an assembly seal ring (321), and the assembly seal ring (321) is assembled on the right inner wall of the scraper frame (310) by bolts.

6. The high-pressure dehydrogenation autoclave for producing iminodiacetic acid according to claim 1, characterized in that: A pressure measuring assembly (400) is inserted into the feed seat (130), a probe (401) is installed at the bottom of the pressure measuring assembly (400), an assembly cap (410) corresponding to the feed seat (130) is fixed at the top of the pressure measuring assembly (400), the assembly cap (410) is threadedly mounted on the upper end of the feed seat (130), a pointer gauge (420) is installed on the upper part of the assembly cap (410), and the pointer gauge (420) is electrically connected to the pressure measuring assembly (400) through a wire.

7. The high-pressure dehydrogenation autoclave for producing iminodiacetic acid according to claim 6, characterized in that: A sealing sleeve (402) is filled between the outside of the pressure measuring component (400) and the inner wall of the feed seat (130), and the sealing sleeve (402) is wrapped and fixed on the outer wall of the pressure measuring component (400). A locking pin (411) is threadedly inserted at the lower end of the outer wall of the assembly cap (410), and the inner end of the locking pin (411) is clamped on the outer wall of the feed seat (130). The outer wall of the feed seat (130) is integrally provided with a limiting frame (131) corresponding to the locking pin (411).

8. The high-pressure dehydrogenation autoclave for producing iminodiacetic acid according to claim 1, characterized in that: A blocking cap (141) is threadedly sleeved at the lower part of the material discharging seat (140), and a twist block (142) is integrally arranged at the bottom of the blocking cap (141). The cross section of the twist block (142) is hexagonal, and insertion holes (143) are arranged in a crisscross pattern inside the twist block (142).

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