Anhydrous hydrogen fluoride dewatering device

Abstract

The utility model relates to an anhydrous hydrogen fluoride water removal device which comprises a water removal tank, a partition plate fixed in the middle of the water removal tank, a liquid inlet pipe arranged on the upper portion of the water removal tank on the left side of the partition plate, a liquid discharge pipe arranged at the bottom of a water storage tank on the right side of the partition plate and an air outlet pipe arranged at the top of the water storage tank on the right side of the partition plate. An outlet of the conveying pump is connected with a conveying pipe, a pipeline mixer is arranged on the conveying pipe, a fluorine inlet pipe is connected to the conveying pipe between the pipeline mixer and the conveying pump, a liquid outlet ring pipe is fixed to the lower portion of the right side of the partition plate and connected with the conveying pipe, and inclined liquid outlet pipes are evenly fixed to the liquid outlet ring pipe. Hydrogen fluoride and fluorine enter the pipeline mixer to be mixed and dewatered, the dewatering effect is better, water and fluorine in the same time period per unit area in the pipeline are little, and the reaction is not too violent.

Description

Technical Field

[0001] The utility model relates to an anhydrous hydrogen fluoride dehydration device, belonging to the technical field of dehydration equipment. Background Art

[0002] Anhydrous hydrogen fluoride is a colorless fuming liquid with a concentration of more than 99% hydrofluoric acid. It is mainly used to prepare fluorine salts, halogenated fluorine hydrocarbons, fluorine refrigerants, corrode glass, impregnate wood, and electrolyze elemental fluorine. In the production of anhydrous hydrogen fluoride, it is necessary to remove water from the hydrogen fluoride liquid. The current common method is to introduce fluorine gas into the hydrogen fluoride liquid tank to react with water to remove water. However, the fluorine gas introduced by the current device is not evenly mixed with water, which affects the dehydration effect. In addition, if fluorine gas is introduced into the hydrogen fluoride liquid, a violent reaction is likely to occur, which is difficult to control. Utility Model Content

[0003] The utility model provides an anhydrous hydrogen fluoride dehydration device, which solves the problems that the fluorine gas and water introduced into the current device are not mixed evenly, which affects the dehydration effect, and if the fluorine gas is introduced into the hydrogen fluoride liquid, a violent reaction is likely to occur and is difficult to control.

[0004] The utility model relates to an anhydrous hydrogen fluoride dehydration device, comprising a dehydration tank, a partition is fixed in the middle of the dehydration tank, a liquid inlet pipe is arranged on the upper part of the dehydration tank on the left side of the partition, a liquid discharge pipe and an air outlet pipe are respectively arranged on the bottom and top of a water storage tank on the right side of the partition, a suction pipe is arranged on the left side of the partition, the suction pipe is connected with a delivery pump, the outlet of the delivery pump is connected with a delivery pipe, a pipeline mixer is arranged on the delivery pipe, a fluorine gas inlet pipe is connected to the delivery pipe between the pipeline mixer and the delivery pump, a liquid outlet ring pipe is fixed on the lower part of the right side of the partition, the liquid outlet ring pipe is connected with the delivery pipe, and inclined liquid outlet pipes are evenly fixed on the liquid outlet ring pipe.

[0005] As a preferred embodiment, a pipe sleeve is fixed on the delivery pipe, and the fluorine gas inlet pipe is fixed on the pipe sleeve to facilitate connection and installation.

[0006] As a preferred embodiment, a drain pipe is provided at the bottom of the water removal tank on the left side of the partition to facilitate the discharge of residual liquid.

[0007] As a preferred embodiment, a support ring is provided above the liquid outlet ring tube, the support ring is fixed on the side wall and partition of the water removal tank, and a defoaming mesh plate is supported above the support ring to defoam the hydrogen fluoride entering the right side of the water storage tank to prevent the fluorine gas from being discharged without reaction.

[0008] As a preferred embodiment, spikes are evenly fixed on the bottom of the bubble removal screen to better remove bubbles.

[0009] The utility model has the following beneficial effects:

[0010] Hydrogen fluoride and fluorine gas enter the pipeline mixer for mixing and water removal, which has a better water removal effect. In addition, there are very few water and fluorine gas per unit area in the pipeline at the same time period, and the reaction will not be too violent. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 It is a schematic diagram of the structure of the utility model;

[0012] Figure 2 Schematic diagram of the top structure of the liquid outlet ring pipe;

[0013] Figure 3 for Figure 1 A schematic diagram of the enlarged structure at A in the middle;

[0014] In the figure: 1, liquid inlet pipe, 2, water removal tank, 3, suction pipe, 4, liquid discharge pipe, 5, partition, 6, liquid outlet ring pipe, 7, drain pipe, 8, spikes, 9, bubble removal mesh plate, 10, delivery pipe, 11, gas outlet pipe, 12, fluorine gas inlet pipe, 13, pipeline mixer, 14, delivery pump, 15, pipe sleeve, 16, support ring, 17, liquid outlet pipe. DETAILED DESCRIPTION

[0015] The utility model is further described below in conjunction with embodiments.

[0016] Embodiment 1, as Figures 1 to 3 As shown, the utility model is a device for removing water from anhydrous hydrogen fluoride, comprising a water removal tank 2, a partition 5 is fixed in the middle of the water removal tank 2, a liquid inlet pipe 1 is provided on the upper part of the water removal tank 2 on the left side of the partition 5, a liquid discharge pipe 7 and an air outlet pipe 11 are provided at the bottom and top of the water storage tank on the right side of the partition 5, respectively, a suction pipe 3 is provided on the left side of the partition 5, the suction pipe 3 is connected to a delivery pump 14, the outlet of the delivery pump 14 is connected to a delivery pipe 10, a pipeline mixer 13 is provided on the delivery pipe 10, a fluorine gas inlet pipe 12 is connected to the delivery pipe 10 between the pipeline mixer 13 and the delivery pump 14, a liquid outlet ring pipe 6 is fixed on the lower right side of the partition 5, the liquid outlet ring pipe 6 is connected to the delivery pipe 10, and inclined liquid outlet pipes 17 are evenly fixed on the liquid outlet ring pipe 6. Valves are provided on the liquid inlet pipe 1, the suction pipe 3, the liquid discharge pipe 7, the fluorine gas inlet pipe 12 and the air outlet pipe 11.

[0017] During operation, the hydrogen fluoride liquid to be dehydrated enters the water storage tank 2 on the left side of the partition 5 from the liquid inlet pipe 1, and then the delivery pump 14 sucks the hydrogen fluoride liquid into the delivery pipe 10 and the pipeline mixer 13, and the fluorine gas entering the delivery pipe 10 from the fluorine gas inlet pipe 12 is evenly mixed with the hydrogen fluoride liquid in the pipeline mixer 13, and the water is removed, and then the hydrogen fluoride liquid enters the liquid outlet ring pipe 6 and is ejected from the liquid outlet pipe 17. The ejected hydrogen fluoride liquid can form a vortex stirring to perform another mixing reaction, and then the gas is discharged from the gas outlet pipe 11.

[0018] Embodiment 2, based on Embodiment 1, a pipe sleeve 15 is fixed on the delivery pipe 10 , and the fluorine gas inlet pipe 12 is fixed on the pipe sleeve 15 .

[0019] A liquid discharge pipe 4 is provided at the bottom of the water removal tank 2 on the left side of the partition plate 5 .

[0020] A support ring 16 is provided above the liquid outlet ring pipe 6 , and the support ring 16 is fixed on the side wall of the water removal tank 2 and the partition plate 5 , and a defoaming mesh plate 9 is supported above the support ring 16 .

[0021] The bottom of the bubble removal screen plate 9 is evenly fixed with spikes 8. The liquid sprayed from the liquid outlet pipe 17 will hit the spikes 8 when stirred, and the bubbles therein will be punctured by the spikes 8, and the fluorine gas in the bubbles will react with the liquid.

[0022] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

[0023] In the description of the present invention, the terms "inside", "outside", "longitudinal", "lateral", "upper", "lower", "top", "bottom" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and do not require that the present invention must be constructed and operated in a specific orientation. Therefore, they should not be understood as limitations on the present invention.

Claims

1. An anhydrous hydrogen fluoride dehydration device, comprising a dehydration tank (2), characterized in that: A partition (5) is fixed in the middle of the dewatering tank (2); a liquid inlet pipe (1) is provided on the upper part of the dewatering tank (2) on the left side of the partition (5); a liquid discharge pipe (7) and an air outlet pipe (11) are respectively provided at the bottom and top of the water storage tank on the right side of the partition (5); a suction pipe (3) is provided on the left side of the partition (5); the suction pipe (3) is connected to a delivery pump (14); the outlet of the delivery pump (14) is connected to a delivery pipe (10); a pipeline mixer (13) is provided on the delivery pipe (10); a fluorine gas inlet pipe (12) is connected to the delivery pipe (10) between the pipeline mixer (13) and the delivery pump (14); a liquid outlet ring pipe (6) is fixed on the lower part of the right side of the partition (5); the liquid outlet ring pipe (6) is connected to the delivery pipe (10); inclined liquid outlet pipes (17) are evenly fixed on the liquid outlet ring pipe (6).

2. The anhydrous hydrogen fluoride dehydration device according to claim 1, characterized in that: A pipe sleeve (15) is fixed on the delivery pipe (10), and a fluorine gas inlet pipe (12) is fixed on the pipe sleeve (15).

3. The anhydrous hydrogen fluoride dehydration device according to claim 2, characterized in that: A liquid discharge pipe (4) is provided at the bottom of the water removal tank (2) on the left side of the partition plate (5).

4. The anhydrous hydrogen fluoride dehydration device according to claim 1, characterized in that: A support ring (16) is provided above the liquid outlet ring pipe (6), the support ring (16) is fixed on the side wall of the water removal tank (2) and the partition plate (5), and a defoaming mesh plate (9) is supported above the support ring (16).

5. The anhydrous hydrogen fluoride dehydration device according to claim 4, characterized in that: The bottom of the bubble removal screen plate (9) is evenly fixed with spikes (8).

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