Efficient oxidation reaction kettle

Abstract

The utility model relates to the technical field of reaction kettles, in particular to an efficient oxidation reaction kettle which comprises a kettle body, a gas distributor is arranged in the kettle body, an air compressor is externally connected to a gas inlet of the gas distributor, and the gas distributor comprises an annular guide pipe annularly distributed along the inner wall of the kettle body; the annular guide pipe is fixedly mounted on the inner wall of the kettle body through a buckle, and an air tap is arranged on the annular guide pipe. According to the efficient oxidation reaction kettle, external gas can be filled into the gas distributor through the air compressor, oxygen in the air enters the kettle body through the air nozzle, the oxidation efficiency is accelerated, and the oxidation effect is improved.

Description

Technical Field

[0001] This utility model relates to the field of reaction vessel technology, specifically a high-efficiency oxidation reaction vessel. Background Technology

[0002] Reactors are one of the most common and important unit equipment in the metallurgical and chemical industries. They are suitable for reaction processes with various physical properties (such as viscosity and density) and various operating conditions (such as temperature and pressure).

[0003] In hydrometallurgical processes, reaction vessels are often used to perform efficient leaching and impurity removal of materials. Oxidation methods are widely used to remove impurities from the solution or to improve the metal leaching effect. Oxidants used include chemical reagents such as manganese dioxide and hydrogen peroxide, as well as high-purity oxygen and inexpensive air (containing about 21% oxygen).

[0004] In oxidation processes involving the introduction of air (oxygen), the oxidation of liquids relies on the dispersion and thorough mixing of air or oxygen with the solution, which is essential for achieving complete oxidation. To ensure effective air dispersion within the slurry in the reactor vessel, an air distributor is required. The following types of air distributors are available on the market:

[0005] 1. Injecting air into the bottom through a single tube is a simple method, but it is not energy-efficient. The gas dispersion is insufficient, the oxygen does not come into sufficient contact with the substance to be oxidized, the oxidation effect is not ideal, and it is prone to gas overflow.

[0006] 2. Using ring-tube multi-hole distributors and filter-type microbubble distributors, both of which allow air to be discharged from small holes or micropores, the air quickly re-aggregates and is easily clogged, affecting the distribution effect; there is also a Taylor vortex distributor. Although the Taylor vortex distributor has a better air distribution effect, due to the inherent characteristics of its structure, the number of nozzles installed on the elliptical sphere is limited, making it difficult to meet the production requirements of high oxygen consumption. Moreover, its pressure loss is large, and the overall energy-saving effect is not ideal.

[0007] Therefore, a highly efficient oxidation reactor is needed to overcome the above-mentioned shortcomings. Utility Model Content

[0008] The purpose of this invention is to provide a highly efficient oxidation reactor to solve the problems mentioned in the background art.

[0009] To achieve the above objectives, this utility model provides the following technical solution:

[0010] A high-efficiency oxidation reactor includes a reactor body, a gas distributor is disposed inside the reactor body, an air compressor is connected to the air inlet of the gas distributor, the gas distributor includes an annular conduit distributed along the inner wall of the reactor body, the annular conduit is fixedly installed on the inner wall of the reactor body by a snap fastener, and an air nozzle is disposed on the annular conduit.

[0011] As a further improvement of this utility model, the annular conduit is divided into multiple segments, each segment of the annular conduit is connected by a flange, and each segment of the annular conduit is provided with an air nozzle.

[0012] As a further embodiment of this utility model: wherein the air nozzle is connected to the annular conduit by a thread or flange, and the air nozzle is evenly distributed on the annular conduit.

[0013] As a further improvement of this utility model, the air nozzle is a variable diameter structure and is installed facing upwards.

[0014] As a further embodiment of this utility model: the vessel body is provided with a vessel lid, and the interior of the vessel body is also provided with a stirring device. The stirring device includes a transmission device provided at the top of the vessel body, and a stirring shaft fixedly connected to the output shaft of the transmission device and extending into the interior of the vessel body. A stirrer is fixedly installed at the lower end of the stirring shaft.

[0015] As a further improvement of this utility model, a feed inlet and an auxiliary material inlet are provided on the right side above the vessel body.

[0016] As a further embodiment of this utility model: the outer side of the vessel body is provided with a jacket, the inner side of the jacket is provided with a jacket layer, the jacket layer includes a steam inlet and a condensate outlet, the inner side of the jacket layer is provided with a flow guide baffle, and a gasket is provided on the contact end face of the flow guide baffle and the vessel body.

[0017] As a further improvement of this utility model, a discharge port is provided at the center of the bottom of the vessel.

[0018] Compared with the prior art, the beneficial effects of this utility model are:

[0019] This high-efficiency oxidation reactor uses an air compressor to fill the gas distributor with external gas. Oxygen from the air enters the reactor through the nozzle, accelerating the oxidation efficiency and improving the oxidation effect. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the structure of this utility model;

[0021] Figure 2 for Figure 1Top view of the gas distributor;

[0022] Figure 3 for Figure 2 Schematic diagram of the connection between the gas nozzle and the annular duct structure in the gas distributor;

[0023] Figure 4 for Figure 1 Schematic diagram of the steam inlet pipe structure.

[0024] The correspondence between the labels and component names in the attached figures is as follows:

[0025] 10. Reactor body; 11. Feed inlet; 12. Auxiliary material inlet; 13. Thermometer; 14. Gas phase channel; 20. Gas distributor; 21. Air compressor; 22. Annular duct; 23. Air nozzle; 30. Stirring device; 31. Transmission device; 32. Stirring shaft; 33. Agitator; 40. Jacket; 41. Steam inlet; 42. Condensate outlet; 43. Baffle; 44. Gasket; 50. Discharge port. Detailed Implementation

[0026] In the following description, only certain exemplary embodiments are briefly described. As those skilled in the art will recognize, the described embodiments can be modified in various ways without departing from the spirit or scope of this invention. Therefore, the drawings and description are considered exemplary in nature and not restrictive.

[0027] Please see Figures 1-4 A high-efficiency oxidation reactor includes a reactor body 10. A gas distributor 20 is installed inside the reactor body 10. An air compressor 21 is connected to the air inlet of the gas distributor 20. The gas distributor 20 includes annular conduits 22 arranged along the inner wall of the reactor body 10. The annular conduits 22 are fixedly installed on the inner wall of the reactor body 10 by snap-fit. Air nozzles 23 are provided on the annular conduits 22. During this process, external gas can be introduced into the gas distributor 20 through the air compressor 21. Oxygen from the air enters the reactor body 10 through the air nozzles 23, accelerating the oxidation efficiency and improving the oxidation effect.

[0028] Furthermore, the annular conduit 22 is divided into multiple segments, each segment of the annular conduit 22 is connected by a flange, and each segment of the annular conduit 22 is equipped with an air nozzle 23. This design allows for a modular design of the annular conduit 22, enabling direct replacement of damaged parts during later maintenance, thus achieving a rapid and efficient process.

[0029] Furthermore, the air nozzle 23 is connected to the annular conduit 22 by threads or flanges. The air nozzles 23 are evenly distributed on the annular conduit 22. When a certain air nozzle 23 is damaged or blocked, it can be replaced, thereby achieving the effect of strong applicability and the ability to replace the air nozzles of different sizes as needed.

[0030] The nozzle 23 is a variable-diameter structure, installed upwards. After passing through the nozzle 23, the gas flow direction changes to be inclined downwards and diffused into the liquid. According to Bernoulli's principle, in a turbulent two-phase liquid, both pressure and velocity are constantly changing. At the venturi-shaped variable-diameter structure, the fluid velocity is further increased, while the internal pressure decreases. This promotes continuous circulation and mixing of the liquid around the gas distributor 20. At the same time, changing the airflow direction to be inclined downwards can prevent the bottom slurry from clogging the nozzle 23, and can also fully diffuse the airflow, accelerating the oxidation efficiency.

[0031] The vessel body 10 is equipped with a vessel lid, and a stirring device 30 is also installed inside the vessel body 10. The stirring device 30 includes a transmission device 31 located at the top of the vessel body 10, and a stirring shaft 32 fixedly connected to the output shaft of the transmission device 31 and extending into the interior of the vessel body 10. A stirrer 33 is fixedly installed at the lower end of the stirring shaft 32. In this embodiment, the stirring device 30 is connected to the vessel lid using a mechanical shaft seal. A mechanical shaft seal is a rotary shaft seal with low power consumption, low leakage rate, reliable sealing, and long service life. It is mainly used in pressurized or vacuum equipment operating in corrosive, volatile, explosive, highly toxic, and solid particle-containing media. Stirring can accelerate the mixing of slurry and oxygen.

[0032] The upper right side of the vessel body 10 is provided with a feed inlet 11 and an auxiliary material inlet 12; the left side of the vessel body 10 is provided with a thermometer 13 that can be inserted into the vessel body 10 from the lid to measure the temperature, and a gas phase channel 14 for tail gas treatment.

[0033] The vessel body 10 is externally provided with a jacket 40, and the jacket 40 is internally provided with a jacket layer, which includes a steam inlet 41 and a condensate outlet 42. To prevent the gas from directly impacting the inner wall of the vessel body 10 vertically when it enters the jacket 40, thus avoiding localized overheating and vibration, an inlet baffle 43 is provided, and the steam inlet pipe inside the jacket 40 is laterally opened. The baffle 43 is connected to the jacket layer via a gasket 44.

[0034] Furthermore, the jacket 40 encloses the lower half of the outer wall and the bottom of the vessel body 10. The steam inlet is connected to the jacket 40 for heating the medium inside the jacket 40. The heating medium is steam. By passing steam through the jacket 40, the liquid inside the vessel body 10 can be heated. A return pipe is connected to the jacket 40, and a condensate outlet is provided at the bottom of the jacket 40 for releasing the steam condensate inside the jacket 40.

[0035] A discharge port 50 is provided at the center of the bottom of the vessel body 10 for discharging materials.

[0036] It is worth noting that the vessel body 10 is made of ceramic, while other components such as the stirring device 30 (stirring shaft 31, agitator 33) and gas distributor 20 are made of stainless acid-resistant steel. The vessel body is a vertical cylindrical container, consisting of a cylinder and end caps. It is mounted on a foundation platform via supports. The end caps are generally elliptical. Because the inner diameter Di of the cylinder is less than 1800mm, the lower end cap is welded to the cylinder. For ease of disassembly and cleaning, the upper end cap is connected to the cylinder via a flange. Various holes are required on the cylinder and end caps for different purposes, connected via pipes and flanges.

[0037] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A high-efficiency oxidation reactor, comprising a reactor body (10), characterized in that, The interior of the vessel body (10) is provided with a gas distributor (20), and an air compressor (21) is connected to the air inlet of the gas distributor (20). The gas distributor (20) includes an annular conduit (22) distributed along the inner wall of the vessel body (10). The annular conduit (22) is fixedly installed on the inner wall of the vessel body (10) by a snap fastener. An air nozzle (23) is provided on the annular conduit (22).

2. The high-efficiency oxidation reactor according to claim 1, characterized in that, The annular conduit (22) is divided into multiple sections, each section of the annular conduit (22) is connected by a flange, and each section of the annular conduit (22) is provided with an air nozzle (23).

3. The high-efficiency oxidation reactor according to claim 1, characterized in that, The air nozzle (23) is connected to the annular conduit (22) by a thread or flange, and the air nozzle (23) is evenly distributed on the annular conduit (22).

4. The high-efficiency oxidation reactor according to claim 1, characterized in that, The air nozzle (23) has a variable diameter structure and is installed facing upwards.

5. The high-efficiency oxidation reactor according to claim 1, characterized in that, The vessel body (10) is provided with a lid, and the vessel body (10) is also provided with a stirring device (30). The stirring device (30) includes a transmission device (31) provided on the top of the vessel body (10) and a stirring shaft (32) fixedly connected to the output shaft of the transmission device (31) and extending into the vessel body (10). A stirrer (33) is fixedly installed at the lower end of the stirring shaft (32).

6. The high-efficiency oxidation reactor according to claim 1, characterized in that, The upper right side of the vessel body (10) is provided with a feed inlet (11) and an auxiliary material inlet (12).

7. The high-efficiency oxidation reactor according to claim 1, characterized in that, The vessel body (10) is provided with a jacket (40) on the outside, and a jacket layer is provided inside the jacket (40). The jacket layer includes a steam inlet (41) and a condensate outlet (42). A flow guide baffle (43) is provided inside the jacket layer, and a gasket (44) is provided on the contact end face of the flow guide baffle (43) and the vessel body (10).

8. The high-efficiency oxidation reactor according to claim 1, characterized in that, A discharge port (50) is provided at the center of the bottom of the vessel body (10).

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