A CO2 mineralization treatment device for preparing magnesium alloy surface films

Abstract

This invention relates to a CO2 mineralization treatment device for preparing a magnesium alloy surface film, comprising an oxidation furnace, a steam generator, a CO2 gas cylinder, and a temperature controller. The oxidation furnace contains a mineralization reaction cylinder, and a heating chamber is located between the mineralization reaction cylinder and the inner wall of the oxidation furnace. A heating coil is installed within the heating chamber. The top of the mineralization reaction cylinder is equipped with a sealed cover, and the bottom has a conical cylinder. A steam pipe is connected to one side wall of the conical cylinder, and a CO2 pipe is connected to the other side wall. A product support mesh plate is installed inside the mineralization reaction cylinder, as is a temperature sensor. Both the heating coil and the temperature sensor are connected to the temperature controller. A gas premixer is located inside the conical cylinder, and both the steam pipe and the CO2 pipe are connected to the gas premixer. During operation, the steam and CO2 are premixed in the gas premixer before entering the mineralization reaction cylinder to carry out the mineralization reaction on the product support mesh plate, resulting in a better mineralization effect.

Description

Technical Field

[0001] This utility model relates to the technical field of magnesium alloy surface film preparation, and in particular to a CO2 mineralization treatment device for magnesium alloy surface film preparation. Background Technology

[0002] Magnesium alloys are currently the lightest metallic structural materials successfully applied, possessing characteristics such as low density, high specific strength, high specific elastic modulus, good heat dissipation, good vibration damping, and good resistance to organic corrosion. The main factors affecting the corrosion resistance of magnesium alloys include alloy composition, microstructure, surface condition, and the corrosive environment. Surface protection technology, which involves preparing a protective layer on the surface to isolate corrosive media and improve the corrosion resistance of magnesium alloys, is the primary technical means to enhance their corrosion resistance. After preparing the oxide film on the magnesium alloy surface, further treatment with CO2 mineralization technology at high temperatures enhances the oxide film's performance and further improves corrosion resistance.

[0003] In existing CO2 mineralization treatment devices, steam and CO2 are directly introduced into the oxidation furnace to mineralize the product. The degree of mixing between the two cannot be well controlled, which affects the quality of mineralization. Utility Model Content

[0004] The present invention aims to address the shortcomings of the prior art by providing a CO2 mineralization treatment device for preparing a magnesium alloy surface film.

[0005] To achieve the above objectives, this utility model adopts the following technical solution:

[0006] A CO2 mineralization treatment device for preparing a magnesium alloy surface film includes an oxidation furnace, a steam generator, a CO2 gas tank, and a temperature controller. The oxidation furnace contains a mineralization reaction cylinder, and a heating chamber is located between the mineralization reaction cylinder and the inner wall of the oxidation furnace. A heating coil is located within the heating chamber. The top of the mineralization reaction cylinder is equipped with a sealed cover, and the bottom is equipped with a conical cylinder. A steam pipe is connected to one side wall of the conical cylinder, and a CO2 pipe is located on the other side wall. The steam pipe is connected to the steam generator, and the CO2 pipe is connected to the CO2 gas tank. A steam flow control valve is installed on the steam pipe, and a CO2 flow control valve is installed on the CO2 pipe. A product support mesh plate is located inside the mineralization reaction cylinder, and a temperature sensor is located inside the mineralization reaction cylinder. Both the heating coil and the temperature sensor are connected to the temperature controller. A gas premixer is located inside the conical cylinder, and both the steam pipe and the CO2 pipe are connected to the gas premixer.

[0007] The gas premixer has a frustum-shaped steam inner tank with steam outlets evenly distributed on the side wall of the steam inner tank. The steam pipe is connected to the bottom of the steam inner tank. The bottom of the gas premixer is connected to the CO2 pipe, and the top of the gas premixer has a premixed gas outlet.

[0008] Several horizontal baffles are alternately installed on both sides of the inner wall of the gas premixer.

[0009] The beneficial effects of this utility model are: when this utility model is working, water vapor and CO2 are first premixed in the gas premixer and then enter the mineralization reaction cylinder to carry out the mineralization reaction on the product support mesh plate. The temperature is controlled by the temperature controller, and the mineralization reaction effect is better. Attached Figure Description

[0010] Figure 1 This is a schematic diagram of the structure of this utility model;

[0011] Figure 2 This is a schematic diagram of the internal structure of the oxidation furnace;

[0012] Figure 3 for Figure 1 Enlarged view of A in the middle;

[0013] In the diagram: 1-Oxidation furnace; 2-Steam generator; 3-CO2 gas tank; 4-Temperature controller; 5-Mineralization reaction cylinder; 6-Heating chamber; 7-Heating coil; 8-Sealed hood; 9-Conical cylinder; 10-Steam pipe; 11-CO2 pipe; 12-Steam flow control valve; 13-CO2 flow control valve; 14-Product support mesh plate; 15-Temperature sensor; 16-Gas premixer; 17-Steam inner tank; 18-Steam outlet; 19-Premixed gas outlet; 20-Horizontal baffle; 21-Exhaust port; 22-Exhaust valve; 23-Support ring plate;

[0014] The following will describe in detail the embodiments of this utility model with reference to the accompanying drawings. Detailed Implementation

[0015] The principles and features of this utility model are described below with reference to the accompanying drawings. The embodiments described are for illustrative purposes only and are not intended to limit the scope of this utility model. The utility model is described more specifically in the following paragraphs by way of example with reference to the accompanying drawings. The advantages and features of this utility model will become clearer from the following description. It should be noted that the drawings are all in a very simplified form and use non-precise proportions, and are only used to facilitate and clarify the illustration of the embodiments of this utility model.

[0016] It should be noted that when a component is described as "fixed to" another component, it can be directly on the other component or may have a component in between. When a component is considered "connected to" another component, it can be directly connected to the other component or may have a component in between. When a component is considered "set on" another component, it can be directly set on the other component or may have a component in between. The terms "vertical," "horizontal," "left," "right," and similar expressions used in this document are for illustrative purposes only.

[0017] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0018] The present invention will be further described below with reference to the accompanying drawings and embodiments:

[0019] like Figures 1 to 3 As shown, a CO2 mineralization treatment device for preparing a magnesium alloy surface film includes an oxidation furnace 1, a steam generator 2, a CO2 gas tank 3, a temperature controller 4, a mineralization reaction cylinder 5, a heating chamber 6, a heating coil 7, a sealed hood 8, a conical cylinder 9, a steam pipe 10, a CO2 pipe 11, a steam flow control valve 12, a CO2 flow control valve 13, a product support mesh plate 14, a temperature sensor 15, a gas premixer 16, a steam inner tank 17, a steam outlet 18, a premixed gas outlet 19, a horizontal baffle 20, an exhaust port 21, an exhaust valve 22, and a support ring plate 23.

[0020] The oxidizing furnace 1 is equipped with a mineralization reaction cylinder 5. A heating chamber 6 is provided between the mineralization reaction cylinder 5 and the inner wall of the oxidizing furnace 1. A heating coil 7 is provided in the heating chamber 6. The top of the mineralization reaction cylinder 5 is equipped with a sealed cover 8 and the bottom is equipped with a conical cylinder 9. A steam pipe 10 is connected to one side wall of the conical cylinder 9 and a CO2 pipe 11 is provided on the other side wall. The steam pipe 10 is connected to a steam generator 2 and the CO2 pipe 11 is connected to a CO2 gas tank 3. A steam flow control valve 12 is provided on the steam pipe 10 and a CO2 flow control valve 13 is provided on the CO2 pipe 11. A product support mesh plate 14 is provided inside the mineralization reaction cylinder 5. A temperature sensor 15 is provided inside the mineralization reaction cylinder 5. The heating coil 7 and the temperature sensor 15 are both connected to a temperature controller 4. A gas premixer 16 is provided inside the conical cylinder 9. The steam pipe 10 and the CO2 pipe 11 are both connected to the gas premixer 16.

[0021] The gas premixer 16 is equipped with a frustum-shaped water vapor inner tank 17. Water vapor outlets 18 are evenly distributed on the side wall of the water vapor inner tank 17. The water vapor pipe 10 is connected to the bottom of the water vapor inner tank 17. The bottom of the gas premixer 16 is connected to the CO2 pipe 11. The top of the gas premixer 16 is equipped with a premixed gas outlet 19.

[0022] Several horizontal baffles 20 are alternately arranged on both sides of the inner wall of the gas premixer 16, which prolongs the path for the two gases to be premixed.

[0023] The bottom of the oxidation furnace 1 is provided with an exhaust port 21, and the exhaust port 21 is provided with an exhaust valve 22.

[0024] A support ring plate 23 is provided on the inner wall of the mineralization reaction cylinder 5, and a product support mesh plate 14 is installed on the support ring plate 23.

[0025] In operation, water vapor is injected into the gas premixer 16 through the steam pipe 10, and CO2 is injected into the gas premixer 16 through the CO2 pipe 11. The flow ratio of water vapor to CO2 is 1:2. The two are premixed in the gas premixer 16 before entering the mineralization reaction cylinder 5 to carry out the mineralization reaction on the product support mesh plate 14. During the mineralization reaction, the temperature is controlled by the temperature controller 4 to ensure that the temperature of the mineralization reaction is maintained at 60℃, resulting in a better mineralization reaction effect.

[0026] The present invention has been described above with reference to the accompanying drawings. Obviously, the specific implementation of the present invention is not limited to the above-described manner. Any improvements made using the inventive concept and technical solution of the present invention, or direct application to other situations without modification, are all within the protection scope of the present invention.

Claims

1. A CO2 mineralization treatment apparatus for preparing a magnesium alloy surface film, characterized in that, The system includes an oxidizer (1), a steam generator (2), a CO2 tank (3), and a temperature controller (4). The oxidizer (1) contains a mineralization reaction cylinder (5). A heating chamber (6) is located between the mineralization reaction cylinder (5) and the inner wall of the oxidizer (1). A heating coil (7) is located inside the heating chamber (6). The top of the mineralization reaction cylinder (5) is equipped with a sealed cover (8), and the bottom is equipped with a conical cylinder (9). A steam pipe (10) is connected to one side wall of the conical cylinder (9), and a CO2 pipe (11) is located on the other side wall. The steam pipe (10) is connected to the steam generator (2).

2. Pipeline (11) is connected to CO2 gas tank (3). Water vapor pipeline (10) is equipped with water vapor flow control valve (12). CO2 pipeline (11) is equipped with CO2 flow control valve (13). Product support mesh plate (14) is provided inside mineralization reaction cylinder (5). Temperature sensor (15) is provided inside mineralization reaction cylinder (5). Heating coil (7) and temperature sensor (15) are both connected to temperature controller (4). Gas premixer (16) is provided inside conical cylinder (9). Water vapor pipeline (10) and CO2 pipeline (11) are both connected to gas premixer (16).

2. The CO2 mineralization treatment device for preparing a surface film layer of a magnesium alloy according to claim 1, characterized by The gas premixer (16) is equipped with a frustum-shaped water vapor inner tank (17), and water vapor outlets (18) are evenly distributed on the side wall of the water vapor inner tank (17). The water vapor pipe (10) is connected to the bottom of the water vapor inner tank (17), the bottom of the gas premixer (16) is connected to the CO2 pipe (11), and the top of the gas premixer (16) is equipped with a premixed gas outlet (19).

3. The CO2 mineralization treatment device for preparing a surface film layer of a magnesium alloy according to claim 2, characterized by Several horizontal baffles (20) are alternately arranged on both sides of the inner wall of the gas premixer (16).

4. The CO2 mineralization treatment device for preparing a surface film layer of a magnesium alloy according to claim 3, characterized by The bottom of the oxidation furnace (1) is provided with an exhaust port (21), and the exhaust port (21) is provided with an exhaust valve (22).

5. The CO2 mineralization processing device for preparing a surface film layer of a magnesium alloy according to claim 4, characterized by A support ring plate (23) is provided on the inner wall of the mineralization reaction cylinder (5), and a product support mesh plate (14) is installed on the support ring plate (23).

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