Efficient mixed anticorrosion reaction kettle

Abstract

The utility model discloses a kind of high-efficiency mixed anticorrosion reaction kettle, including horizontal kettle body, the horizontal kettle body is anticorrosion composite kettle body, the top of the horizontal kettle body is equipped with feed pipe, bottom is equipped with discharge pipe, the middle part of the horizontal kettle body is equipped with main stirring shaft, screw belt stirrer is equipped on the main stirring shaft, the both sides of the main stirring shaft are equipped with auxiliary stirring shaft respectively, turbine stirrer is equipped on the auxiliary stirring shaft, scraping wall plate is connected on the main stirring shaft, the scraping wall plate is contacted with the inner wall of the horizontal kettle body, ultrasonic wave vibration plate is equipped in the bottom wall of the horizontal kettle body, cathodic protection ring is also equipped in the inner wall of the horizontal kettle body. The utility model can solve the deposition and corrosion problem caused by uneven stirring, realize the efficient long-term, low-maintenance operation of whole, especially suitable for the production scene of sodium diacetate and other crystalline corrosive medium.

Description

Technical Field

[0001] This utility model relates to the field of reaction vessel technology, and in particular to a high-efficiency mixing and corrosion-resistant reaction vessel. Background Technology

[0002] Due to the special nature of the sodium diacetate production process, the reaction system contains glacial acetic acid and sodium carbonate, which are highly corrosive. The product crystallization process is sensitive to the uniformity of mixing. Existing vertical reactors have problems with bottom sedimentation and corrosion. Uneven stirring will lead to incomplete reaction, and severe corrosion will affect product quality. Therefore, there is an urgent need for a reactor that can achieve efficient mixing and is corrosion resistant. Utility Model Content

[0003] The technical problem to be solved by this utility model is to provide a high-efficiency mixing and corrosion-resistant reaction vessel, which aims to solve the technical problems in the prior art that are caused by uneven stirring, resulting in bottom sedimentation, incomplete reaction, and severe corrosion of the reaction vessel, which affects product quality.

[0004] The technical solution of this utility model is: a high-efficiency mixing and corrosion-resistant reaction vessel, including a horizontal vessel body, wherein the horizontal vessel body is a corrosion-resistant composite vessel body, the top of the horizontal vessel body is provided with a feed pipe and the bottom is provided with a discharge pipe, the middle of the horizontal vessel body is provided with a main stirring shaft, the main stirring shaft is provided with a ribbon agitator, the two sides of the main stirring shaft are respectively provided with auxiliary stirring shafts, the auxiliary stirring shafts are provided with turbine agitators, the main stirring shaft is connected with a scraper plate, the scraper plate is in contact with the inner wall of the horizontal vessel body, the bottom wall of the horizontal vessel body is provided with an ultrasonic vibrating plate, and the inner wall of the horizontal vessel body is also provided with a cathodic protection ring.

[0005] Furthermore, the horizontal vessel body described in this utility model includes a Hastelloy layer, a titanium plate layer, and a stainless steel layer arranged sequentially from the inside out.

[0006] Furthermore, both the feed pipe and the discharge pipe in this utility model are equipped with solenoid valves.

[0007] Furthermore, in this invention, the two ends of the main stirring shaft extend out from the two ends of the horizontal vessel body, and one end of the main stirring shaft is connected to the main motor through a planetary gear reducer.

[0008] Furthermore, the present invention has four turbine agitators, which are respectively arranged at the four corners of the horizontal vessel body. Each turbine agitator is rotatably installed in the horizontal vessel body through the auxiliary agitator shaft. The outer end of each auxiliary agitator shaft extends out of the horizontal vessel body and is equipped with a small gear. Both ends of the main agitator shaft are respectively equipped with large gears that mesh with the small gears on both sides.

[0009] Furthermore, in this utility model, protective boxes are provided on both sides of the horizontal vessel body, and the main stirring shaft passes through the protective box on one side to the protective box on the other side. The outer ends of the small gear, the large gear, and the auxiliary stirring shaft on both sides are all located in the corresponding protective boxes.

[0010] Furthermore, in this invention, each of the auxiliary stirring shafts is fitted with a protective sleeve, which is fixedly installed on the inner wall of the horizontal vessel.

[0011] Furthermore, the scraper plate in this utility model includes a main body section and edge sections respectively disposed at both ends of the main body section. The main body section and the edge sections are integrally formed. The main body section contacts the circumferential inner wall of the horizontal vessel body, and the edge sections contact the end face inner wall of the horizontal vessel body.

[0012] Furthermore, the main body section of this utility model is provided with multiple mixing baffles arranged at intervals.

[0013] Furthermore, the cathode protection rings described in this utility model are multiple and spaced apart within the inner wall of the horizontal reactor body.

[0014] Compared with the prior art, this invention has the following advantages: The reactor is designed as a horizontal structure, which can increase the liquid surface area and reduce dead zones. The internal stirring system adopts a combination of a central spiral agitator and a side-wall turbine agitator, along with scraper plates and mixing baffles, which can solve the sedimentation problem caused by uneven stirring. The bottom ultrasonic vibrating plate can effectively break up crystal agglomeration and prevent scale formation at the bottom of the reactor. The reactor body adopts a composite anti-corrosion scheme to deal with corrosion problems. The cathodic protection ring installed inside the reactor can further counteract electrochemical corrosion, thereby achieving high-efficiency, long-term, and low-maintenance operation. It is particularly suitable for production scenarios with crystalline corrosive media such as sodium diacetate. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure of this utility model;

[0016] Figure 2 This is a schematic diagram of the specific structure of the horizontal vessel body described in this utility model.

[0017] The components include: 1. Horizontal vessel body; 1a. Hastelloy layer; 1b. Titanium plate layer; 1c. Stainless steel layer; 2. Feed pipe; 3. Discharge pipe; 4. Solenoid valve; 5. Main stirring shaft; 6. Ribbon agitator; 7. Auxiliary stirring shaft; 8. Turbine agitator; 9. Scraper; 9a. Main section; 9b. Edge section; 10. Ultrasonic vibrating plate; 11. Cathodic protection ring; 12. Planetary gear reducer; 13. Main motor; 14. Pinion; 15. Gear; 16. Protective housing; 17. Protective sleeve; 18. Mixing baffle. Detailed Implementation

[0018] The specific embodiments of this utility model are described in detail below with reference to the accompanying drawings.

[0019] Example:

[0020] The accompanying drawings illustrate a specific embodiment of the high-efficiency mixing and corrosion-resistant reaction vessel of this utility model. Figure 1 , Figure 2 It mainly includes a horizontal vessel body 1. The horizontal structure can increase the liquid surface area and reduce dead zones. The horizontal vessel body 1 is a corrosion-resistant composite vessel body. The horizontal vessel body 1 includes a Hastelloy layer 1a, a titanium plate layer 1b, and a stainless steel layer 1c arranged sequentially from the inside to the outside. The Hastelloy layer 1a is a contact layer that is resistant to corrosion, the titanium plate layer 1b is an intermediate transition layer, and the stainless steel layer 1c is an outer pressure-bearing layer.

[0021] The horizontal vessel body 1 is equipped with a feed pipe 2 at the top and a discharge pipe 3 at the bottom, and both the feed pipe 2 and the discharge pipe 3 are equipped with solenoid valves 4.

[0022] A main stirring shaft 5 is located in the middle of the horizontal vessel body 1, and a ribbon agitator 6 is mounted on the main stirring shaft 5. Both ends of the main stirring shaft 5 extend out from both ends of the horizontal vessel body 1, and one end of the main stirring shaft 5 is connected to a main motor 13 via a planetary gear reducer 12. The main motor 13 drives the main stirring shaft 5 to rotate at a low speed via the planetary gear reducer 12, which in turn drives the central ribbon agitator 6 to rotate at a low speed. The ribbon agitator 6 is used to propel the materials for overall mixing.

[0023] A turbine agitator 8 is located at each of the four corners inside the horizontal vessel body 1. Each turbine agitator 8 is rotatably mounted inside the horizontal vessel body 1 via a secondary agitator shaft 7. The outer end of each secondary agitator shaft 7 extends out of the horizontal vessel body 1 and is equipped with a pinion gear 14. Both ends of the main agitator shaft 5 are equipped with large gears 15 that mesh with the pinion gears 14 on both sides. Specifically, one large gear 15 on the left meshes with two pinion gears 14 above and below it, and the same applies to the right side. While the main agitator shaft 5 rotates at low speed, the two large gears 15 also rotate at low speed, driving the four pinion gears 14 to rotate at high speed. This, in turn, drives the four turbine agitators 8 to rotate at high speed via the secondary agitator shaft 7, thereby achieving a further localized and efficient mixing effect.

[0024] The horizontal vessel body 1 is provided with protective boxes 16 on both sides. The main stirring shaft 5 passes through the protective box 16 on one side to the protective box 16 on the other side. The small gear 14, large gear 15 and the outer ends of the auxiliary stirring shaft 7 on both sides are all located in the corresponding protective boxes 16. The protective boxes 16 can play a protective role.

[0025] Each auxiliary stirring shaft 7 is fitted with a protective sleeve 17. The protective sleeve 17 is fixedly installed on the inner wall of the horizontal vessel body 1. The auxiliary stirring shaft 7 and the protective sleeve 17 are connected in a sealed rotational manner to prevent materials from entering the protective sleeve 17. At the same time, it can protect the auxiliary stirring shaft 7 and ensure that it is not interfered with when rotating.

[0026] A scraper 9 is also connected to the main stirring shaft 5. The scraper 9 includes a main body section 9a and edge sections 9b located at both ends of the main body section 9a. The main body section 9a and the edge sections 9b are integrally formed. The main body section 9a contacts the circumferential inner wall of the horizontal vessel 1, and the edge sections 9b contact the end face inner wall of the horizontal vessel 1. The contact range between the scraper 9 and the horizontal vessel 1 is larger. When the main stirring shaft 5 rotates, it can drive the scraper 9 to rotate, thus removing material from the vessel wall in real time. The main body section 9a is also equipped with multiple mixing baffles 18 arranged at intervals. The mixing baffles 18 can further stir the material and solve the sedimentation problem caused by uneven stirring.

[0027] The bottom wall of the horizontal vessel 1 is equipped with an ultrasonic vibrating plate 10, which can effectively break up crystal agglomeration and prevent scale formation at the bottom of the vessel.

[0028] The inner wall of the horizontal vessel body 1 is also provided with a cathodic protection ring 11. There are multiple cathodic protection rings 11 arranged at intervals in the inner wall of the horizontal vessel body 1. The cathodic protection rings 11 installed in the vessel can further counteract electrochemical corrosion. By using an external current, the cathodic protection rings 11 can continuously release electrons, which can inhibit the anodic dissolution reaction of the vessel body metal.

[0029] Of course, the above embodiments are only for illustrating the technical concept and features of this utility model, and their purpose is to enable those skilled in the art to understand the content of this utility model and implement it accordingly. They should not be used to limit the protection scope of this utility model. All modifications made in accordance with the spirit and essence of the main technical solution of this utility model should be covered within the protection scope of this utility model.

Claims

1. A high-efficiency mixing and corrosion-resistant reaction vessel, characterized in that: The vessel includes a horizontal vessel body (1), which is a corrosion-resistant composite vessel body. The top of the horizontal vessel body (1) is provided with a feed pipe (2) and the bottom is provided with a discharge pipe (3). The middle part of the horizontal vessel body (1) is provided with a main stirring shaft (5). The main stirring shaft (5) is provided with a ribbon agitator (6). The two sides of the main stirring shaft (5) are respectively provided with auxiliary stirring shafts (7). The auxiliary stirring shafts (7) are provided with turbine agitators (8). The main stirring shaft (5) is connected with a scraper (9). The scraper (9) is in contact with the inner wall of the horizontal vessel body (1). The bottom wall of the horizontal vessel body (1) is provided with an ultrasonic vibrating plate (10). The inner wall of the horizontal vessel body (1) is also provided with a cathodic protection ring (11).

2. The high-efficiency mixing and corrosion-resistant reaction vessel according to claim 1, characterized in that: The horizontal vessel body (1) includes a Hastelloy layer (1a), a titanium plate layer (1b), and a stainless steel layer (1c) arranged sequentially from the inside out.

3. The high-efficiency mixing and corrosion-resistant reaction vessel according to claim 1, characterized in that: Both the feed pipe (2) and the discharge pipe (3) are equipped with solenoid valves (4).

4. The high-efficiency mixing and corrosion-resistant reaction vessel according to claim 1, characterized in that: The two ends of the main stirring shaft (5) extend out of the two ends of the horizontal vessel body (1), and one end of the main stirring shaft (5) is connected to the main motor (13) through the planetary gear reducer (12).

5. The high-efficiency mixing and corrosion-resistant reaction vessel according to claim 4, characterized in that: The turbine agitator (8) has four turbine agitators, which are respectively arranged at the four corners inside the horizontal vessel body (1). Each turbine agitator (8) is rotatably installed inside the horizontal vessel body (1) via the auxiliary agitator shaft (7). The outer end of each auxiliary agitator shaft (7) extends out of the horizontal vessel body (1) and is equipped with a pinion gear (14). Both ends of the main agitator shaft (5) are respectively equipped with large gears (15) that mesh with the pinion gears (14) on both sides.

6. The high-efficiency mixing and corrosion-resistant reaction vessel according to claim 5, characterized in that: The horizontal vessel body (1) is provided with protective boxes (16) on both sides. The main stirring shaft (5) passes through the protective box (16) on one side to the protective box (16) on the other side. The outer ends of the small gear (14), the large gear (15), and the auxiliary stirring shaft (7) on both sides are all located in the corresponding protective boxes (16).

7. The high-efficiency mixing and corrosion-resistant reaction vessel according to claim 5, characterized in that: Each of the auxiliary stirring shafts (7) is fitted with a protective sleeve (17), which is fixedly installed on the inner wall of the horizontal vessel body (1).

8. The high-efficiency mixing and corrosion-resistant reaction vessel according to claim 1, characterized in that: The scraper plate (9) includes a main body section (9a) and edge sections (9b) respectively located at both ends of the main body section (9a). The main body section (9a) and the edge sections (9b) are integrally formed. The main body section (9a) contacts the circumferential inner wall of the horizontal vessel body (1), and the edge sections (9b) contact the end face inner wall of the horizontal vessel body (1).

9. The high-efficiency mixing and corrosion-resistant reaction vessel according to claim 8, characterized in that: The main body section (9a) is provided with multiple mixing baffles (18) arranged at intervals.

10. The high-efficiency mixing and corrosion-resistant reaction vessel according to claim 1, characterized in that: The cathode protection ring (11) has multiple rings arranged at intervals on the inner wall of the horizontal vessel body (1).

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