Titanium tetrachloride gas phase oxidation reaction cooling section

Abstract

The utility model discloses a titanium tetrachloride gas phase oxidation reaction cooling section which comprises a shell, an inlet flange and an outlet flange are arranged at the two ends of the shell respectively, an inner pipe is arranged in the shell, a sealed cooling water jacket is formed between the shell and the inner pipe, and the pipe diameter of the inner pipe is gradually increased from a material inlet to a material outlet. A water inlet pipe and a water outlet pipe are further arranged on the outer sleeve, a non-metal pipe is arranged on one side of the material outlet in the outer shell, the non-metal pipe is made of mullite, the pipe diameter of the non-metal pipe is gradually increased towards the direction of the material outlet, knotting materials are filled among the non-metal pipe, the outlet flange and the outer shell, and the non-metal pipe and the inner pipe are coaxially arranged. The non-metal pipe, the shell and the outlet flange are combined together at the material inlet by utilizing the knotting material, and the non-metal pipe replaces the export Pankang Inconel alloy material, so that the complex structure of the Pankang Inconel alloy material is reduced, meanwhile, the blockage caused by scabbing of the material outlet is effectively avoided, the rapid cooling of the generated material is ensured, and the quality of a titanium dioxide product is ensured.

Description

Technical Field

[0001] This utility model relates to the field of titanium dioxide production technology using the chloride process, specifically to a cooling section for the gas-phase oxidation reaction of titanium tetrachloride. Background Technology

[0002] The titanium tetrachloride gas-phase oxidation reactor is a device used in the chloride process for titanium dioxide production to produce titanium dioxide. High-temperature oxygen and high-temperature titanium tetrachloride gas enter the reactor through different pathways. When the two media are uniformly mixed, the titanium tetrachloride gas-phase oxidation reaction is rapidly completed, producing titanium dioxide and chlorine gas. The cooling section of the titanium tetrachloride oxidation reaction is made of Inconel material. Titanium dioxide material easily adheres to the inner walls of the metal equipment, clogging the product outlet, shortening the equipment's operating cycle, and affecting the smooth operation of the process. Summary of the Invention

[0003] To address the aforementioned problems, this invention provides a cooling section for the gas-phase oxidation reaction of titanium tetrachloride, which solves the problem of easy adhesion and scaling on the walls of metal equipment, blocking the material outlet and ensuring continuous and smooth operation of the production unit.

[0004] To achieve the above objectives, the present invention adopts the following technical solution: a cooling section for the gas-phase oxidation reaction of titanium tetrachloride, comprising an outer shell, an inlet flange and an outlet flange respectively provided at both ends of the outer shell, an inner tube provided inside the outer shell, and a sealed cooling water jacket formed between the outer shell and the inner tube, wherein the diameter of the inner tube gradually increases from the material inlet to the material outlet, and an inlet pipe and an outlet pipe are also provided on the outer shell, wherein a non-metallic pipe is provided on the material outlet side inside the outer shell, the non-metallic pipe is made of mullite, and its diameter gradually increases from the material outlet, and a binding material is filled between the non-metallic pipe, the outlet flange and the outer shell, and the non-metallic pipe is coaxially arranged with the inner tube.

[0005] The length of the non-metallic tube is 300mm to 700mm.

[0006] The inner tube is connected to a scar removal agent pipe near the inlet flange, and the scar removal agent pipe extends out of the outer shell.

[0007] The cooling water jacket is equipped with a spiral baffle.

[0008] The beneficial effects of this utility model are as follows: Compared with the prior art, this utility model combines the non-metallic pipe with the outer shell and the outlet flange by using a knotting material at the material inlet. The non-metallic pipe replaces the Inconel alloy material at the outlet end, reducing the complex structure of the Inconel alloy material. At the same time, it effectively improves the corrosion resistance and anti-scaling performance of the equipment, avoids material outlet blockage, and designs the inner pipe and non-metallic pipe with gradually increasing diameters to further enhance the cooling effect of the generated material, prevent material outlet blockage, and ensure the quality of titanium dioxide products. Attached Figure Description

[0009] The present invention will be further described below with reference to the accompanying drawings:

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

[0011] In the diagram: 1. Outer shell; 2. Inlet flange; 3. Outlet flange; 4. Inner pipe; 5. Cooling water jacket; 6. Inlet pipe; 7. Outlet pipe; 8. Non-metallic pipe; 9. Knotting material; 10. Scabbing agent pipe; 11. Spiral baffle. Detailed Implementation

[0012] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments.

[0013] The technical solution of this utility model will be described in detail below with specific embodiments. The following specific embodiments can be selected to be combined or substituted with each other according to the actual situation, and the same or similar concepts or processes may not be described again in some embodiments. Example

[0014] like Figure 1 As shown, this utility model provides a cooling section for the gas-phase oxidation reaction of titanium tetrachloride, including an outer shell 1. An inlet flange 2 and an outlet flange 3 are respectively provided at both ends of the outer shell 1. An inner tube 4 is provided inside the outer shell 1, and a sealed cooling water jacket 5 is formed between the outer shell 1 and the inner tube 4. The diameter of the inner tube 4 gradually increases from the material inlet to the material outlet. An inlet pipe 6 and an outlet pipe 7 are also provided on the outer shell 1. A non-metallic pipe 8 is provided on the material outlet side inside the outer shell 1. The non-metallic pipe 8 is made of mullite, and its diameter gradually increases from the material outlet. The space between the non-metallic pipe 8, the outlet flange 2, and the outer shell 1 is filled with a binding material 9. The non-metallic pipe 8 is coaxially arranged with the inner tube 4. The length of the non-metallic pipe 8 is 300mm to 700mm.

[0015] By using knotting material 9 at the material inlet to combine the non-metallic pipe 8 with the outer shell 1 and the outlet flange 3, the non-metallic pipe 8 replaces part of the Inconel alloy material, reducing the complex structure of the Inconel alloy material. At the same time, due to the reduced adhesion between titanium dioxide material and non-metallic material, it effectively avoids the formation of scale at the material outlet, which can cause blockage. The inner pipe 4 and the diameter of the non-metallic pipe 8 are designed to gradually increase, further enhancing the cooling effect of the generated material, preventing blockage at the material outlet, and ensuring the quality of titanium dioxide products.

[0016] Furthermore, the inner tube 4 is connected to a scar removal agent pipe 10 near the inlet flange 2, and the scar removal agent pipe 10 extends out of the outer casing 1. The scar removal agent pipe 10 is provided to introduce the scar removal agent, thus better addressing the problem of easy adhesion and scaling on the walls of metal equipment.

[0017] Furthermore, the cooling water jacket 5 is equipped with a spiral baffle 11. The spiral baffle 11 guides the water flow and improves the cooling effect.

[0018] In addition to the preferred embodiments described above, there are other embodiments of this utility model. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are within the scope of protection claimed by this utility model.

Claims

1. A cooling section for the gas-phase oxidation reaction of titanium tetrachloride, characterized in that, The outer shell (1) is provided with an inlet flange (2) and an outlet flange (3) at both ends. An inner tube (4) is provided inside the outer shell (1). A sealed cooling water jacket (5) is formed between the outer shell (1) and the inner tube (4). The diameter of the inner tube (4) gradually increases from the material inlet to the material outlet. An inlet pipe (6) and an outlet pipe (7) are also provided on the outer shell (1). A non-metallic pipe (8) is provided on the material outlet side inside the outer shell (1). The non-metallic pipe (8) is made of mullite and its diameter gradually increases from the material outlet. The non-metallic pipe (8) is filled with a knotting material (9) between the outlet flange (2) and the outer shell (1). The non-metallic pipe (8) is coaxially arranged with the inner tube (4).

2. The cooling section for the gas-phase oxidation reaction of titanium tetrachloride according to claim 1, characterized in that, The length of the non-metallic tube (8) is 300mm to 700mm.

3. The cooling section for the gas-phase oxidation reaction of titanium tetrachloride according to claim 1, characterized in that, The inner tube (4) is connected to the scar removal agent pipe (10) at one end near the inlet flange (2), and the scar removal agent pipe (10) extends out of the outer shell (1).

4. The cooling section for the gas-phase oxidation reaction of titanium tetrachloride according to claim 1, characterized in that, The cooling water jacket (5) is equipped with a spiral baffle (11).

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