Titanium tetrachloride gas-liquid separator and gas-liquid separation method

Abstract

The present invention discloses a titanium tetrachloride gas-liquid separator applied to gas condensation recovery, comprising: a cone, a gas-liquid inlet pipe, a drain pipe and an exhaust pipe. The cone includes a top wall, a side wall, a bottom wall and a cavity. The gas-liquid inlet pipe and the drain pipe are connected to the side wall of the cone and communicate with the cavity of the cone. The exhaust pipe is connected to the top wall of the cone and communicates with the cavity of the cone. A flow channel is provided on the side wall of the cone on the side of the cavity of the cone; the gas-liquid inlet pipe is closer to the top wall of the cone than the drain pipe. The present invention also discloses a method for gas-liquid separation by using the titanium tetrachloride gas-liquid separator applied to gas condensation recovery. The gas-liquid separator of the present invention can improve the efficiency of gas condensation recovery and prevent the occurrence of cavitation during the gas condensation recovery process. The present invention also provides a method for gas-liquid separation by using the above gas-liquid separator.

Description

Technical Field

[0001] The invention relates to the technical field of mineral processing, and particularly relates to a titanium tetrachloride gas-liquid separator and a gas-liquid separation method applying gas condensation recovery. Background Art

[0002] In the production process of titanium tetrachloride, the chlorination furnace reaction produces gaseous titanium tetrachloride. The condensation process uses liquid titanium tetrachloride to absorb gaseous titanium tetrachloride. Generally, four-stage absorption towers are arranged in the condensation process, and the unabsorbed titanium tetrachloride in the previous stage enters the next condensation for continuous absorption treatment. The first-stage absorption tower is set at a temperature of 125°C, which is close to the boiling point of titanium tetrachloride at 136°C. Cavitation is likely to occur at the cone part of the first-stage absorption tower, and the gas entraining liquid enters the second-stage absorption tower, reducing the absorption efficiency of the second-stage absorption tower.

[0003] Therefore, there is currently a technical improvement need to improve the absorption efficiency of the absorption tower and prevent the occurrence of cavitation. Summary of the Invention

[0004] Based on this, a titanium tetrachloride gas-liquid separator and a gas-liquid separation method applying gas condensation recovery are provided. Installing this titanium tetrachloride gas-liquid separator in the blanking pipe of the first-stage absorption tower can reduce the liquid entrainment entering the second-stage condensation, improve the absorption efficiency of the second-stage absorption tower, and prevent cavitation from forming at the cone part of the first-stage absorption tower. And the following technical solutions are adopted:

[0005] The invention provides a titanium tetrachloride gas-liquid separator applied to gas condensation recovery, including: a cone, a gas-liquid inlet pipe, a drain pipe, and an exhaust pipe. The cone includes a top wall, a side wall, a bottom wall, and a cavity. Among them, the gas-liquid inlet pipe and the drain pipe are connected to the side wall of the cone and communicate with the cavity of the cone, the exhaust pipe is connected to the top wall of the cone and communicates with the cavity of the cone, and a flow channel is provided on the side wall of the cone on the side of the cavity of the cone.

[0006] Further, the cone is a conical body with a cone angle of 50-70 degrees.

[0007] Further, the material of the cone is carbon steel.

[0008] Further, the gas-liquid inlet pipe is arranged at the middle position of the side wall of the cone between the top wall and the bottom wall of the cone.

[0009] Further, the drain pipe is arranged at the position of the side wall of the cone close to the bottom wall of the cone.

[0010] Further, the gas-liquid inlet pipe is tangentially connected to the side wall of the cone and extends into the cavity of the cone.

[0011] Further, the exhaust pipe is arranged on the top wall of the cone and is coaxially connected to the cone.

[0012] Further, the flow channel is arranged in a spiral manner, and the tangential downward angle of the flow channel is 10-15 degrees.

[0013] Further, the material of the flow channel is metal, and the depth of the flow channel is 100-300 mm.

[0014] The present invention also provides a method for gas-liquid separation using the above gas-liquid separator, including: the gas-liquid mixture tangentially enters the conical cavity through the gas-liquid inlet pipe, the gas-liquid mixture flows downward in the conical cavity through the flow channel, the separated liquid is discharged out of the conical cavity through the drain pipe, and the gas with liquid droplets removed discharges upward out of the conical cavity through the exhaust pipe.

[0015] Advantages of the present invention: Installing the titanium tetrachloride gas-liquid separator in the discharge pipe of the first-stage absorption tower reduces the liquid entrainment entering the second-stage condensation, improves the absorption efficiency of the second-stage absorption tower, and prevents cavitation from occurring at the cone part of the first-stage absorption tower; the titanium tetrachloride gas-liquid separator of the present invention is provided with a gas-liquid inlet pipe and a drain pipe having a height difference in the vertical direction of the cone and a flow channel spirally arranged on the side wall of the cone, so that the gas-liquid mixture can complete gas-liquid separation during the flow in the titanium tetrachloride gas-liquid separator, saving time and effort, and quickly solving the problem of cavitation. Description of the Drawings

[0016] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the following drawings are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0017] Figure 1 The front view of the titanium tetrachloride gas-liquid separator applied to gas condensation recovery disclosed in an embodiment of the present invention;

[0018] Figure 2 The partial view of the titanium tetrachloride gas-liquid separator applied to gas condensation recovery disclosed in an embodiment of the present invention;

[0019] Figure 3 The top view of the titanium tetrachloride gas-liquid separation applied to gas condensation recovery disclosed in an embodiment of the present invention.

[0020] Figure 4 The schematic diagram of the slideway angle of the gas-liquid separation applied to gas condensation recovery disclosed in an embodiment of the present invention.

[0021] The reference numerals are: 1 - cone, 2 - gas-liquid inlet pipe, 3 - drain pipe, 4 - exhaust pipe, 5 - top wall, 6 - side wall, 7 - bottom wall, 8 - cavity, 9 - flow channel, R - vertical direction, R1 - gas-liquid inlet direction into the cavity, R2 - downward tangent direction of the flow channel, A - included angle between R1 and R2 Detailed implementation mode

[0022] To make the objectives, technical solutions and advantages of the present invention clearer and more understandable, the following further elaborates on the present invention through embodiments and in conjunction with the accompanying drawings. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0023] As Figures 1 to 4 shown, a titanium tetrachloride gas-liquid separator applied to gas condensation recovery is shown, including: a cone 1, a gas-liquid inlet pipe 2, a drain pipe 3 and an exhaust pipe 4. The cone 1 includes a top wall 5, a side wall 6, a bottom wall 7 and a cavity 8. The gas-liquid inlet pipe 2 and the drain pipe 3 are connected to the side wall 6 of the cone and communicate with the cavity 8 of the cone. The exhaust pipe 4 is connected to the top wall 5 of the cone and communicates with the cavity 8 of the cone. A flow channel 9 is provided on the side wall 6 of the cone on the side of the cavity 8 of the cone. As Figure 4 shown, the gas-liquid mixture enters the cavity of the cone from the gas-liquid inlet pipe 2 along the R1 direction. The gas-liquid mixture undergoes gas-liquid separation under the action of gravity in the cavity 8 of the cone. Among them, the separated liquid flows downward out of the cavity 8 of the cone through the drain pipe 3, and the gas with liquid droplets removed flows upward out of the cavity 8 of the cone through the exhaust pipe 3.

[0024] Along the vertical direction R of the cone 1, the gas-liquid inlet pipe 2 is closer to the top wall 5 of the cone than the drain pipe 3. That is to say, there is a height difference between the gas-liquid inlet pipe 2 and the drain pipe 3 in the vertical direction R. In this way, the gas-liquid mixture entering the cavity 8 of the cone of the cone 1 from the gas-liquid inlet pipe 2 can flow downward along the side wall 6 of the cone 1 by gravity.

[0025] The cone 1 is a hollow structure. The gas-liquid mixture from the gas-liquid inlet pipe 2 into the cavity 8 of the cone completes gas-liquid separation in the cavity 8 of the cone. In one embodiment, the cone 1 is a conical body with a taper of 50 - 70 degrees.

[0026] In one embodiment, the material of the cone 1 is carbon steel.

[0027] In one embodiment, the gas-liquid inlet pipe 2 is connected to the middle position of the side wall 6 of the cone between the top wall 5 and the bottom wall 7 of the cone. The gas-liquid inlet pipe 2 enters the cavity 8 of the cone tangentially parallel to the bottom wall 7 of the cone. Optionally, the gas-liquid inlet pipe 2 enters the cavity 8 of the cone tangentially perpendicular to the bottom wall 7 of the cone.

[0028] The drain pipe 3 is connected to the side wall 6 of the cone and communicates with the cavity 8 of the cone. The liquid phase separated in the cavity 8 of the cone is discharged out of the cavity 8 of the cone through the drain pipe 3. In one embodiment, the drain pipe 3 is connected to the side wall 6 of the cone near the bottom 7 of the cone, so that the separated liquid flows out of the cavity 8 of the cone under the action of gravity.

[0029] The exhaust pipe 4 is connected to the top wall 5 of the cone. The gas separated in the cavity 8 of the cone is discharged out of the cavity 8 of the cone through the exhaust pipe. In one embodiment, the exhaust pipe 4 is coaxially connected to the cone 1.

[0030] The side wall 6 of the cone is provided with a flow channel 9 on the side of the cavity 8 of the cone. After the gas-liquid mixture enters the cavity 8 of the cone through the gas-liquid inlet pipe 2, it flows downward along the flow channel 9. In one embodiment, the flow channel 9 is arranged on the side of the cavity 8 of the cone on the side wall 6 of the cone, and is spirally arranged continuously from the side near the top wall 5 of the cone to the side near the bottom wall of the cone along the gas-liquid inlet direction. The flow channels 9 are arranged in multiple and parallel, as Figure 4 shown. The included angle A between R1 and R2 is 10-15 degrees. The structural shape of the flow channel 9 is a groove embedded in the side wall 6 of the cone or a convex strip protruding from the side wall 6 of the cone.

[0031] In one embodiment, the flow channel 9 is made of steel plate.

[0032] In one embodiment, the depth of the flow channel 9 is 100-300 mm.

[0033] Adopt the Figure 2 shown method for gas-liquid separation using the titanium tetrachloride gas-liquid separator, which includes the following steps: The gas-liquid mixture tangentially enters the cavity 8 of the cone through the gas-liquid inlet pipe 2, the gas-liquid mixture flows downward along the flow channel 9, and the gas-liquid mixture undergoes gas-liquid separation under the action of gravity in the cavity 8 of the cone. Among them, the separated liquid is discharged out of the cavity 8 of the cone downward through the drain pipe 3, and the gas removing liquid droplets is discharged out of the cavity 8 of the cone upward through the exhaust pipe 3.

[0034] The gas-liquid separator of the present invention is installed on the discharge pipe of the first-stage absorption tower. The gas-liquid inlet pipe) is connected to the discharge pipe, and the exhaust pipe 3 is connected to the second-stage absorption tower.

[0035] The above are exemplary embodiments disclosed by the present invention. The order of disclosure of the above embodiments of the present invention is only for description and does not represent the superiority or inferiority of the embodiments. However, it should be noted that the discussion of any of the above embodiments is only exemplary and is not intended to imply that the scope of disclosure of the embodiments of the present invention (including the claims) is limited to these examples. Without departing from the scope defined by the claims, various changes and modifications can be made. The functions, steps, and / or actions of the method claims according to the disclosed embodiments herein need not be performed in any specific order. In addition, although the elements disclosed in the embodiments of the present invention may be described or claimed in individual form, they can also be understood as plural unless explicitly limited to the singular form.

[0036] Those of ordinary skill in the art should understand that: the discussion of any of the above embodiments is only exemplary and is not intended to imply that the scope of disclosure of the embodiments of the present invention (including the claims) is limited to these examples; under the concept of the embodiments of the present invention, the technical features in the above embodiments or different embodiments can also be combined, and there are many other variations in different aspects of the embodiments of the present invention as described above, which are not provided in the first section for the sake of brevity. Therefore, any omission, modification, equivalent replacement, improvement, etc. made within the spirit and principle of the embodiments of the present invention shall be included in the protection scope of the embodiments of the present invention.

Claims

1. A titanium tetrachloride gas-liquid separator applied to gas condensation recovery, characterized in that, Comprising: A cone (1), a gas-liquid inlet pipe (2), a drain pipe (3) and an exhaust pipe (4). The cone (1) includes a top wall (5), a side wall (6), a bottom wall (7) and a cavity (8). The gas-liquid inlet pipe (2) and the drain pipe (3) are connected to the side wall (6) of the cone and communicate with the cavity (8) of the cone. The exhaust pipe (4) is connected to the top wall (5) of the cone and communicates with the cavity (8) of the cone. A flow channel (9) is provided on the side wall (6) of the cone on the side of the cavity (8) of the cone; the gas-liquid inlet pipe (2) is closer to the top wall (5) of the cone than the drain pipe (3). The cone (1) is a conical body with a diameter gradually increasing from top to bottom, and the cone angle is 50 - 70 degrees. The gas-liquid inlet pipe (2) is arranged at the middle position of the side wall (6) of the cone between the top wall (5) of the cone and the bottom wall (7) of the cone.

2. The titanium tetrachloride gas-liquid separator applied to gas condensation recovery according to claim 1, wherein: The material of the cone (1) is carbon steel.

3. The titanium tetrachloride gas-liquid separator applied to gas condensation recovery according to claim 1, wherein: The drain pipe (3) is arranged at the position of the side wall (6) of the cone close to the bottom wall (7) of the cone.

4. The titanium tetrachloride gas-liquid separator applied to gas condensation recovery according to claim 2, wherein: The gas-liquid inlet pipe (2) is tangentially connected to the side wall of the cone and extends into the cavity (8) of the cone.

5. The titanium tetrachloride gas-liquid separator applied to gas condensation recovery according to claim 1, characterized in that: The exhaust pipe (4) is arranged on the top wall (5) of the cone and is coaxially connected to the cone (1).

6. The titanium tetrachloride gas-liquid separator applied to gas condensation recovery according to claim 1, characterized in that: The flow channel (9) is arranged in a spiral pattern, and the tangential downward angle of the flow channel (9) is 10 - 15 degrees.

7. The titanium tetrachloride gas-liquid separator applied to gas condensation recovery according to claim 6, wherein: The material of the flow channel (9) is metal, and the depth of the flow channel (9) is 100 - 300 mm.

8. A method for gas-liquid separation using the titanium tetrachloride gas-liquid separator for gas condensation recovery according to any one of claims 1-7, characterized in that, The method includes: The gas-liquid mixture tangentially enters the cavity (8) of the cone through the gas-liquid inlet pipe (2). The gas-liquid mixture spirally flows downward in the cavity (8) of the cone along the flow channel (9). The separated liquid is discharged out of the cavity (8) of the cone through the drain pipe (3). The gas with droplets removed is discharged out of the cavity (8) of the cone upward through the exhaust pipe (4).

Images