An oxidation reactor for preparing iron oxide

Abstract

The utility model discloses an oxidation reaction cauldron for preparing iron oxide, including the reaction cauldron body, the lower end of this reaction cauldron body is provided with the inclined inner wall, makes the lower end of reaction cauldron body be funnel -shaped, and the bottom still is equipped with the liquid outlet pipe, and the upper end of reaction cauldron body still is equipped with the liquid inlet pipe, and the upper end of reaction cauldron still is equipped with the stirring mechanism, and the main shaft of this stirring mechanism is inserted into the reaction cauldron body and is correspondingly equipped with the stirring vane. The heating element in the interlayer in the device is opened to heat the water body in the interlayer, and the water body is heated and transmits the heat to the inside of reaction cauldron body through the interlayer, and is also under the action of the stirring vane and is emitted to the reaction cauldron body from the bottom position, and the heat in the interlayer will not be wasted, and can really enter the reaction cauldron body, and improves the heating effect.

Description

Technical Field

[0001] This utility model relates to the field of iron oxide preparation technology, specifically an oxidation reaction vessel for preparing iron oxide. Background Technology

[0002] In the specific preparation of iron oxide, an oxidation reaction is required. Specifically, the prepared seed crystal solution is placed into an oxidation reaction vessel, and then iron oxide raw material is added to the reaction vessel. Oxygen is then introduced into the reaction vessel, and the reaction vessel is heated so that the seed crystal solution and iron oxide raw material react at 80-85℃ for 84-110 hours to obtain a suspension rich in iron oxide crystal particles. After further processing such as filtration, drying, and grinding, the iron oxide pigment product is obtained.

[0003] The structural design of iron oxide reactors in the prior art is exemplified by the "uniformly heated oxidation reactor" disclosed in authorization announcement number CN 113893789 B. This technical solution mainly addresses two technical issues: one is the problem of uniform heating of the reactor; the other is the problem of oxygen injection into the reactor.

[0004] Heating of the reactor is achieved by setting up a jacket, while oxygen injection is achieved by setting up a surrounding gas distribution pipe inside the reactor. However, the above technical solutions and existing technical solutions usually still have certain problems.

[0005] The first issue is heating. Most solutions use a jacketed design, where hot water is placed inside the jacket for heating. However, this method results in significant heat loss from the water, leading to energy waste. Furthermore, the heating effect is not ideal, as the water cannot actually penetrate deep into the reactor for effective heating.

[0006] On the other hand, regarding the issue of oxygen filling, the above-mentioned technical solution is too complex, and the filled oxygen cannot be truly dispersed into the entire reactor. The structural design is too complex and unreasonable.

[0007] Therefore, in order to solve the above problems, it is necessary to develop a reasonably structured oxidation reactor for the preparation of iron oxide. Utility Model Content

[0008] The purpose of this invention is to address the shortcomings of existing technologies by providing an oxidation reaction vessel for preparing iron oxide; the technical solution is as follows:

[0009] An oxidation reactor for preparing iron oxide includes a reactor body with an inclined inner wall at the lower end, making the lower end of the reactor body funnel-shaped, and an outlet pipe installed at the bottom. An inlet pipe is also installed at the upper end of the reactor body. A stirring mechanism is also installed at the upper end of the reactor body, with the main shaft of the stirring mechanism extending into the reactor body and corresponding stirring blades installed.

[0010] A jacket is provided on the inclined inner wall at the lower end of the reactor body. The jacket is a long, narrow box structure and is recessed inwards towards the reactor body. Several jackets are provided and evenly spaced. Each jacket is filled with water and a heating element is installed inside. The heating element is connected to a power supply device to provide electricity. The heating element heats the water in the jacket and then transfers the heat to the reactor body.

[0011] Furthermore, a solenoid valve is also installed on the liquid outlet pipe.

[0012] Furthermore, the interlayer has three evenly spaced layers on the inclined inner wall, and each interlayer is located on the radius of the inclined inner wall; and each interlayer has a heating element, which is a resistance heater, to heat the water in the interlayer by means of resistance heating.

[0013] Furthermore, an L-shaped air inlet pipe is installed on the inclined inner wall of the reactor body. One end of the air inlet pipe is vertically installed on the inclined inner wall, while the other end is parallel to the inclined inner wall. A U-shaped movable plug is fitted on the parallel end, and the lower half of the movable plug is a mesh cylinder. An air inlet device is connected to the vertical end of the air inlet pipe.

[0014] The aforementioned air intake device delivers oxygen into the air intake pipe. The air intake pipe pushes open the movable plug cylinder upwards. After the movable plug cylinder moves forward, the mesh cylinder is located at the end of the air intake pipe. Oxygen is ejected from the end of the air intake pipe and enters the reactor body after being divided by the mesh cylinder. When the oxygen in the air intake pipe stops, the movable plug cylinder slides down under the action of gravity to seal the air intake pipe.

[0015] Furthermore, the length of the air inlet pipe and the length of the movable plug are set accordingly. When the movable plug is pushed upward by the oxygen in the air inlet pipe, the movable plug is blocked by the inner wall of the reactor body after it moves. At this time, the mesh cylinder of the lower half of the movable plug is located at the end of the air inlet pipe, and the oxygen in the air inlet pipe can be sprayed out accordingly.

[0016] Furthermore, the combination of the air intake pipe and the movable plug has three evenly spaced sections on the inclined inner wall.

[0017] Furthermore, the combination design of the three air intake pipes and the movable plug, along with the three interlayers, are staggered.

[0018] Furthermore, a solenoid valve is also installed on the air inlet pipe, and a triangular fixing seat is also installed on the air inlet pipe to fix the air inlet pipe inside the reactor body.

[0019] Beneficial effects: This utility model has the following beneficial effects:

[0020] 1) When the heating element in the jacket of this device is turned on, it heats the water in the jacket. After the water is heated, the heat is transferred to the interior of the reactor body through the jacket. At the same time, under the action of the stirring blades, the heat is dissipated from the bottom to the reactor body. The heat in the jacket is not wasted and can actually enter the reactor body, thus improving the heating effect.

[0021] 2) In this device, the injected oxygen can be cut by the mesh cylinder and dispersed to various places by the stirring blades above; and under normal conditions, the air inlet pipe is blocked by the moving plug. After the oxygen injection is completed, the moving plug slides down under the action of gravity to block the air inlet pipe, preventing a large amount of seed liquid from entering the air inlet pipe and affecting the service life of the air inlet pipe. Attached Figure Description

[0022] Figure 1 This is a structural diagram of Embodiment 1 of the present utility model;

[0023] Figure 2 for Figure 1 AA view;

[0024] Figure 3 This is a structural diagram of Embodiment 2 of the present utility model;

[0025] Figure 4 for Figure 3 BB view;

[0026] Figure 5 A schematic diagram showing the movable plug being pushed open;

[0027] The reactor body includes: 1. Inclined inner wall; 2. Liquid outlet pipe; 3. Liquid inlet pipe; 4. Stirring mechanism; 5. Stirring blade; 6. Jacket; 7. Heating element; 8. Power supply device; 9. Solenoid valve; 10. Air inlet pipe; 11. Movable plug; 12. Mesh cylinder; 13. Air inlet device; 14. Fixed base. Detailed Implementation

[0028] The present invention will be further explained below with reference to the accompanying drawings and specific embodiments. These embodiments are implemented under the premise of the technical solution of the present invention. It should be understood that these embodiments are only used to illustrate the present invention and are not intended to limit the scope of the present invention.

[0029] Example 1

[0030] like Figure 1 and Figure 2 As shown, an oxidation reactor for preparing iron oxide in this embodiment includes a reactor body 1. The lower end of the reactor body 1 is provided with an inclined inner wall 2, making the lower end of the reactor body 1 funnel-shaped. A liquid outlet pipe 3 is also installed at the bottom, and a liquid inlet pipe 4 is also installed at the upper end of the reactor body 1. In this embodiment, a stirring mechanism 5 is also installed at the upper end of the reactor. The main shaft of the stirring mechanism 5 extends into the reactor body 1 and a stirring blade 6 is correspondingly installed.

[0031] In this embodiment, a jacket 7 is also provided at the inclined inner wall 2 at the lower end of the reactor body 1. The jacket 7 in this embodiment is a long strip-shaped box structure, and the jacket 7 is recessed towards the inside of the reactor body 1. There are several jackets 7 in this embodiment, which are evenly spaced. The jacket 7 is filled with water, and each jacket 7 is equipped with a heating element 8. The heating element 8 in this embodiment is connected to a power supply device 9, which provides power. The heating element 8 heats the water in the jacket 7 and then transfers the heat to the reactor body 1.

[0032] In this embodiment, a solenoid valve 10 is also installed on the outlet pipe 3; in this embodiment, three evenly spaced interlayers 7 are arranged on the inclined inner wall 2, and the interlayers 7 are all arranged on the radius of the inclined inner wall 2. In this embodiment, each interlayer 7 is provided with a heating element 8, and specifically the heating element 8 is set as a resistance heater, which heats the water in the interlayer 7 by means of resistance heating.

[0033] The technical solution of this embodiment addresses the heating problem inside the oxidation reactor. The main solution is to replace the existing integral jacket with a split structure, specifically a long, narrow box structure, with the jacket recessed inward on the inclined inner wall. The entire jacket is then recessed into the reactor body. Heating elements and a power supply are then installed inside the jacket.

[0034] When the heating element in the jacket is turned on, it heats the water in the jacket. After the water is heated, the heat is transferred to the interior of the reactor body through the jacket. At the same time, under the action of the stirring blades, the heat is dissipated from the bottom to the reactor body. The heat in the jacket is not wasted and can actually enter the reactor body, thus improving the heating effect.

[0035] Furthermore, the heating element in this embodiment can be specifically set as a resistance heater, which is the most common heating method in the prior art. It can also be heated by electric heating rods, heating plates, thermocouples, etc., which are all heating methods in the prior art.

[0036] Example 2

[0037] like Figure 3 , Figure 4 and Figure 5 As shown, an oxidation reactor for preparing iron oxide in this embodiment includes a reactor body 1. The lower end of the reactor body 1 is provided with an inclined inner wall 2, making the lower end of the reactor body 1 funnel-shaped. A liquid outlet pipe 3 is also installed at the bottom, and a liquid inlet pipe 4 is also installed at the upper end of the reactor body 1. In this embodiment, a stirring mechanism 5 is also installed at the upper end of the reactor. The main shaft of the stirring mechanism 5 extends into the reactor body 1 and a stirring blade 6 is correspondingly installed.

[0038] In this embodiment, a jacket 7 is also provided at the inclined inner wall 2 at the lower end of the reactor body 1. The jacket 7 in this embodiment is a long strip-shaped box structure, and the jacket 7 is recessed towards the inside of the reactor body 1. There are several jackets 7 in this embodiment, which are evenly spaced. The jacket 7 is filled with water, and each jacket 7 is equipped with a heating element 8. The heating element 8 in this embodiment is connected to a power supply device 9, which provides power. The heating element 8 heats the water in the jacket 7 and then transfers the heat to the reactor body 1.

[0039] In this embodiment, a solenoid valve 10 is also installed on the liquid outlet pipe 3; in this embodiment, three evenly spaced interlayers 7 are provided on the inclined inner wall 2, and the interlayers 7 in this embodiment are all located on the radius of the inclined inner wall 2.

[0040] In this embodiment, an L-shaped air inlet pipe 11 is also installed on the inclined inner wall 2 of the reactor body 1. One end of the air inlet pipe 11 is vertically installed on the inclined inner wall 2, and the other end is arranged parallel to the inclined inner wall 2. A U-shaped movable plug 12 is also fitted on the parallel end. The lower half of the movable plug 12 is set as a mesh cylinder 13, and the vertical end of the air inlet pipe 11 is connected to an air inlet device 14.

[0041] In this embodiment, the air intake device 14 delivers oxygen into the air intake pipe 11. The air intake pipe 11 pushes the movable plug 12 upward. After the movable plug 12 moves forward, the mesh cylinder 13 is located at the end of the air intake pipe 11. Oxygen is sprayed out from the end of the air intake pipe 11 and enters the reactor body 1 after being divided by the mesh cylinder 13. When the oxygen in the air intake pipe 11 stops, the movable plug 12 slides down under the action of gravity and seals the air intake pipe 11.

[0042] The length of the inlet pipe 11 and the length of the movable plug 12 are set accordingly. When the movable plug 12 is pushed upward by the oxygen in the inlet pipe 11, the movable plug 12 is blocked by the inner wall of the reactor body 1 after it moves. At this time, the mesh cylinder 13 of the lower half of the movable plug 12 is located at the end of the inlet pipe 11, and the oxygen in the inlet pipe 11 can be sprayed out accordingly.

[0043] In this embodiment, the combination of the air intake pipe 11 and the movable plug 12 is provided with three evenly spaced sections on the inclined inner wall 2; the combination design of the three air intake pipes 11 and the movable plug 12 and the three interlayers 7 are staggered.

[0044] In this embodiment, an electromagnetic valve 10 is also installed on the air inlet pipe 11, and a triangular fixing seat 15 is also installed on the air inlet pipe 11. The air inlet pipe 11 is fixed inside the reactor body 1 by the fixing seat 15.

[0045] The technical solution of this embodiment is based on the technical solution of embodiment 1, and an oxygen injection device is set in the reactor body. The technical solution of this embodiment is to set an L-shaped air inlet pipe on the inclined inner wall. An air inlet device is connected to the outside of the air inlet pipe, and a movable plug is installed inside the air inlet pipe. The movable plug seals the end of the air inlet pipe. However, when the air inlet device introduces oxygen into the air inlet pipe, the movable plug is lifted up under the pressure of the oxygen. After the movable plug is lifted up, the lower half of the mesh cylinder is lifted to the end position of the air inlet end. The oxygen coming out of the air inlet pipe is cut by the mesh cylinder and enters the liquid. Under the action of the upper stirring blade, it is driven to other positions.

[0046] In this embodiment, the injected oxygen can be cut and dispersed to various locations by the stirring blades above. In addition, under normal conditions, the intake pipe is blocked by the movable plug. After the oxygen injection is completed, the movable plug slides down under the action of gravity to block the intake pipe, preventing a large amount of seed liquid from entering the intake pipe and affecting its service life.

[0047] The above-described specific embodiments are merely preferred embodiments of this utility model and are not intended to limit the implementation of this utility model or the scope of the claims. All equivalent changes and modifications made in accordance with the scope of protection of this utility model patent application should be included within the scope of this utility model patent application.

Claims

1. An oxidation reaction vessel for preparing iron oxide, characterized in that: The reactor includes a reactor body (1), the lower end of which is provided with an inclined inner wall (2), making the lower end of the reactor body (1) funnel-shaped, and a liquid outlet pipe (3) is also installed at the bottom. A liquid inlet pipe (4) is also installed at the upper end of the reactor body (1). A stirring mechanism (5) is also installed at the upper end of the reactor, the main shaft of which extends into the reactor body (1) and a stirring blade (6) is installed accordingly. A jacket (7) is provided at the inclined inner wall (2) at the lower end of the reactor body (1). The jacket (7) is a long box structure and is recessed into the inner side of the reactor body (1). There are several jackets (7) and they are evenly spaced. The jackets (7) are filled with water and each jacket (7) is equipped with a heating element (8). The heating element (8) is connected to a power supply device (9) to provide power. The heating element (8) heats the water in the jacket (7) and then transfers the heat to the reactor body (1).

2. The oxidation reaction vessel for preparing iron oxide according to claim 1, characterized in that: A solenoid valve (10) is also installed on the liquid outlet pipe (3).

3. The oxidation reaction vessel for preparing iron oxide according to claim 1, characterized in that: The interlayer (7) is provided with three evenly spaced layers on the inclined inner wall (2), and the interlayer (7) is provided on the radius of the inclined inner wall (2); and each interlayer (7) is provided with a heating element (8), which is a resistance heater, and heats the water in the interlayer (7) by means of resistance heating.

4. An oxidation reaction vessel for preparing iron oxide according to claim 3, characterized in that: An L-shaped air inlet pipe (11) is also installed on the inclined inner wall (2) of the reactor body (1). One end of the air inlet pipe (11) is vertically installed on the inclined inner wall (2), and the other end is set parallel to the inclined inner wall (2). A U-shaped movable plug (12) is also fitted on the parallel end. The lower half of the movable plug (12) is set as a mesh cylinder (13), and the vertical end of the air inlet pipe (11) is connected to an external air inlet device (14). The air intake device (14) delivers oxygen into the air intake pipe (11). The air intake pipe (11) pushes open the movable plug (12) upward. After the movable plug (12) moves forward, the mesh cylinder (13) is located at the end of the air intake pipe (11). Oxygen is sprayed out from the end of the air intake pipe (11) and enters the reactor body (1) after being divided by the mesh cylinder (13). When the oxygen in the air intake pipe (11) stops, the movable plug (12) slides down under the action of gravity and seals the air intake pipe (11).

5. An oxidation reaction vessel for preparing iron oxide according to claim 4, characterized in that: The length of the inlet pipe (11) and the length of the movable plug (12) are set accordingly. When the movable plug (12) is pushed open by the oxygen in the inlet pipe (11), the movable plug (12) is blocked by the inner wall of the reactor body (1) after it moves. At this time, the mesh cylinder (13) of the lower half of the movable plug (12) is located at the end of the inlet pipe (11), and the oxygen in the inlet pipe (11) can be sprayed out accordingly.

6. An oxidation reactor for preparing iron oxide according to claim 4, characterized in that: The combination of the air intake pipe (11) and the movable plug (12) is provided with three evenly spaced sections on the inclined inner wall (2).

7. An oxidation reactor for preparing iron oxide according to claim 6, characterized in that: The combination design of the three air inlet pipes (11) and the movable plug (12) is staggered with the three interlayers (7).

8. An oxidation reactor for preparing iron oxide according to claim 4, characterized in that: The air inlet pipe (11) is also equipped with a solenoid valve (10) and a triangular fixing seat (15) is also installed on the air inlet pipe (11). The air inlet pipe (11) is fixed inside the reactor body (1) by the fixing seat (15).

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