Efficient condensing equipment for preparing hydrofluoric acid

Abstract

The utility model discloses efficient condensing equipment for preparing hydrofluoric acid, which comprises an outer sleeve, an air inlet is fixedly mounted at the bottom of one side of the outer sleeve, an air outlet is fixedly mounted at the top of the other side of the outer sleeve, a connecting cavity is fixedly mounted at the bottom of the outer sleeve, and a coolant conduit is fixedly mounted in the outer sleeve. A backflow cover is fixedly installed at the top of the outer sleeve, an electric control valve is fixedly installed at one end of an air inlet, a storage tank is arranged at the other end of the electric control valve, an air compressor is arranged at an air inlet of the storage tank, and a heat insulation partition plate is fixedly installed in a connecting cavity. High-pressure hydrofluoric acid steam is expanded after entering the outer sleeve, so that the temperature of the hydrofluoric acid steam is reduced, meanwhile, the hydrofluoric acid steam is subjected to heat exchange with the coolant guide pipe, the hydrofluoric acid steam can be fully condensed, and the condensation efficiency in the hydrofluoric acid production process is improved.

Description

Technical Field

[0001] This utility model relates to the field of hydrofluoric acid preparation technology, specifically to a high-efficiency condensation device for hydrofluoric acid preparation. Background Technology

[0002] Hydrofluoric acid is highly effective against compounds such as calcium and magnesium, and is therefore widely used in many industries, including as a cleaning agent in the semiconductor industry, an etching agent in the glass etching industry, a surface rust remover in the steel industry, and a catalyst in the petrochemical industry. However, due to its strong corrosiveness and high fat solubility, hydrofluoric acid easily penetrates the human body, combines with calcium and magnesium ions, and corrodes bones and muscles. Not only does it cause harm through skin contact, but it can also pose a significant hazard if inhaled.

[0003] The production technology for hydrofluoric acid includes both atmospheric and pressurized processes, the difference being that the distillation and degassing columns operate at atmospheric pressure and pressurized operation, respectively. Since hydrofluoric acid has a boiling point of 19.5°C at atmospheric pressure, the condensers at the top of the distillation and degassing columns in the atmospheric pressure process require chilled water for condensation. Currently, the condensers used in hydrofluoric acid production processes have low condensation efficiency.

[0004] Therefore, we propose a high-efficiency condensation device for the preparation of hydrofluoric acid. Utility Model Content

[0005] The purpose of this invention is to provide a high-efficiency condensation device for the preparation of hydrofluoric acid, so as to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a high-efficiency condensation device for hydrofluoric acid preparation, comprising an outer tube, an air inlet fixedly installed at the bottom of one side of the outer tube, an air outlet fixedly installed at the top of the other side of the outer tube, a connecting cavity fixedly installed at the bottom of the outer tube, a coolant conduit fixedly installed inside the outer tube, a backflow shroud fixedly installed at the top of the outer tube, an electrically controlled valve fixedly installed at one end of the air inlet, a storage tank provided at the other end of the electrically controlled valve, an air compressor provided at the air inlet of the storage tank, a heat insulation baffle fixedly installed inside the connecting cavity, a coolant outlet fixedly installed on one side of the connecting cavity below the air inlet, a coolant inlet fixedly installed on the other side of the connecting cavity, several alternately distributed turbulence baffles fixedly installed inside the outer tube, and a discharge port fixedly installed at the bottom of the front side of the outer tube.

[0007] Optionally, a one-way valve is fixedly installed at the end of the air outlet, and the bottom of the air outlet is higher than the top of the uppermost baffle plate.

[0008] Optionally, the top of the coolant conduit is fixedly installed through the top of the outer sleeve, the top of the coolant conduit is connected to the interior of the counterflow shield, the bottom of the coolant conduit is fixedly installed through the bottom of the outer sleeve, and the bottom of the coolant conduit is connected to the interior of the connecting cavity.

[0009] Optionally, the coolant conduits are evenly distributed on both sides of the heat insulation partition, the heat insulation partition is made of corrosion-resistant heat insulation board, and the interior of the heat insulation partition is filled with heat insulation filler.

[0010] Optionally, the baffles are arranged symmetrically, alternating left and right, and several baffles are evenly distributed inside the outer casing. The coolant conduits are fixedly installed through the baffles.

[0011] Optionally, the air inlet of the storage tank is fixedly installed with the air compressor, a drain pipe is provided at the bottom of the storage tank, the electrically controlled valve is fixedly installed with the air outlet of the storage tank, and the air inlet of the air compressor is fixedly installed with the hydrofluoric acid vapor conduit.

[0012] Optionally, the bottom of the discharge port is flush with the bottom of the inner side of the outer sleeve.

[0013] Compared with the prior art, the beneficial effects of this utility model are:

[0014] This high-efficiency condensation equipment for hydrofluoric acid production compresses hydrofluoric acid vapor using an air compressor and stores it in a storage tank for cooling. A controllable electronic valve is used to intermittently open and close the valve, allowing the high-pressure hydrofluoric acid vapor from the storage tank to be fed into the outer casing through the inlet. Upon entering the outer casing, the high-pressure hydrofluoric acid vapor expands, lowering its temperature. Simultaneously, it exchanges heat with the coolant conduit, enabling the hydrofluoric acid vapor to condense fully and improving the condensation efficiency during hydrofluoric acid production.

[0015] This high-efficiency condensation equipment for hydrofluoric acid preparation uses a coolant conduit. Low-temperature coolant is fed into the connecting cavity on one side of the heat-insulating partition through the coolant inlet, and then into the coolant conduit on the other side of the heat-insulating partition. It flows into the coolant conduit on the other side through the counterflow shroud. Hydrofluoric acid vapor that enters the outer tube through the air inlet exchanges heat with the coolant conduit. The hydrofluoric acid vapor is deflected by the turbulence baffle and cooled down, so that the hydrofluoric acid vapor and the coolant conduit can fully contact each other for cooling. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of the high-efficiency condensation equipment for the preparation of hydrofluoric acid according to this utility model;

[0017] Figure 2 This is a schematic diagram of the outer tube of the high-efficiency condensation device for hydrofluoric acid preparation according to this utility model;

[0018] Figure 3 This is a schematic diagram of the coolant conduit in the high-efficiency condensation equipment for hydrofluoric acid preparation according to this invention.

[0019] In the diagram: 1. Outer casing; 2. Air compressor; 3. Storage tank; 4. Electrically controlled valve; 5. Air inlet; 6. Connecting chamber; 7. Air outlet; 8. Check valve; 9. Discharge port; 10. Thermal insulation baffle; 11. Coolant inlet; 12. Coolant outlet; 13. Reverse flow shield; 14. Coolant conduit; 15. Baffle. Detailed Implementation

[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0021] Please see Figures 1 to 3 This utility model provides a high-efficiency condensation device for hydrofluoric acid preparation, including an outer tube 1, an air inlet 5 fixedly installed at the bottom of one side of the outer tube 1, an air outlet 7 fixedly installed at the top of the other side of the outer tube 1, a connecting cavity 6 fixedly installed at the bottom of the outer tube 1, a coolant conduit 14 fixedly installed inside the outer tube 1, a backflow shroud 13 fixedly installed at the top of the outer tube 1, an electrically controlled valve 4 fixedly installed at one end of the air inlet 5, a storage tank 3 provided at the other end of the electrically controlled valve 4, an air compressor 2 provided at the air inlet 5 of the storage tank 3, a heat insulation baffle 10 fixedly installed inside the connecting cavity 6, and a coolant outlet 12 fixedly installed on one side of the connecting cavity 6 below the air inlet 5. A coolant inlet 11 is fixedly installed on the other side of cavity 6. Several alternating baffles 15 are fixedly installed inside the outer tube 1. A discharge port 9 is fixedly installed at the bottom of the front side of the outer tube 1. Hydrofluoric acid vapor is compressed by an air compressor 2 and stored in a storage tank 3 for cooling. The high-pressure hydrofluoric acid vapor in the storage tank 3 is sent into the outer tube 1 through the air inlet 5 by controlling the opening and closing of the electric control valve 4. When the high-pressure hydrofluoric acid vapor enters the outer tube 1, it expands, thereby reducing the temperature of the hydrofluoric acid vapor. At the same time, it exchanges heat with the coolant conduit 14, so that the hydrofluoric acid vapor can be fully condensed, improving the condensation efficiency in the hydrofluoric acid production process.

[0022] A one-way valve 8 is fixedly installed at the end of the outlet 7. The bottom of the outlet 7 is higher than the top of the uppermost baffle 15. The top of the coolant conduit 14 is fixedly installed through the top of the outer sleeve 1. The top of the coolant conduit 14 is connected to the inside of the backflow shroud 13. The bottom of the coolant conduit 14 is fixedly installed through the bottom of the outer sleeve 1. The bottom of the coolant conduit 14 is connected to the inside of the connecting cavity 6. The coolant conduits 14 are evenly distributed on both sides of the heat insulation baffle 10. The heat insulation baffle 10 is made of corrosion-resistant heat insulation board and is filled with heat insulation filler. The baffles 15 are symmetrically arranged alternately on the left and right sides. Several baffles 15 are evenly distributed inside the outer sleeve 1. The coolant conduits 14 are fixedly installed through the baffles 15 respectively. Storage tank The air inlet of the storage tank 3 is fixedly installed with the air compressor 2. A drain pipe is provided at the bottom of the storage tank 3. The electric control valve 4 is fixedly installed with the air outlet of the storage tank 3. The air inlet of the air compressor 2 is fixedly installed with the hydrofluoric acid vapor conduit. The bottom of the discharge port 9 is flush with the bottom of the inner side of the outer casing 1. Through the coolant conduit 14, the low-temperature coolant is sent through the coolant inlet 11 into the connecting cavity 6 on one side of the heat insulation partition 10, and then into the coolant conduit 14 on one side of the heat insulation partition 10. It flows into the coolant conduit 14 on the other side through the counterflow shroud 13. The hydrofluoric acid vapor that enters the inner side of the outer casing 1 through the air inlet 5 exchanges heat with the coolant conduit 14. The hydrofluoric acid vapor is cooled after being deflected by the turbulence baffle 15, so that the hydrofluoric acid vapor and the coolant conduit 14 can fully contact each other for cooling.

[0023] Working principle:

[0024] Low-temperature coolant is fed into the connecting cavity 6 on one side of the heat insulation partition 10 through coolant inlet 11, and then into the coolant conduit 14 on the other side of the heat insulation partition 10. It flows into the coolant conduit 14 on the other side through the counterflow shroud 13. The hydrofluoric acid vapor is compressed by the air compressor 2 and stored in the storage tank 3 for cooling. The high-pressure hydrofluoric acid vapor in the storage tank 3 is sent into the outer tube 1 through the air inlet 5 by the control valve 4 to open and close intermittently. When the high-pressure hydrofluoric acid vapor enters the outer tube 1, it expands, thereby reducing the temperature of the hydrofluoric acid vapor. At the same time, it exchanges heat with the coolant conduit 14, so that the hydrofluoric acid vapor can be fully condensed, improving the condensation efficiency in the hydrofluoric acid production process. The expanded hydrofluoric acid vapor is deflected by the baffle 15 and cooled, so that the hydrofluoric acid vapor can fully contact the coolant conduit 14 for cooling.

[0025] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A high-efficiency condensation device for the preparation of hydrofluoric acid, comprising an outer casing (1), characterized in that, An air inlet (5) is fixedly installed at the bottom of one side of the outer tube (1), and an air outlet (7) is fixedly installed at the top of the other side of the outer tube (1). A connecting cavity (6) is fixedly installed at the bottom of the outer tube (1). A coolant conduit (14) is fixedly installed inside the outer tube (1). A backflow shield (13) is fixedly installed at the top of the outer tube (1). An electric control valve (4) is fixedly installed at one end of the air inlet (5), and a storage tank (3) is provided at the other end of the electric control valve (4). An air compressor (2) is installed at the air inlet (5) of the storage tank (3). A heat insulation baffle (10) is fixedly installed inside the connecting cavity (6). A coolant outlet (12) located below the air inlet (5) is fixedly installed on one side of the connecting cavity (6). A coolant inlet (11) is fixedly installed on the other side of the connecting cavity (6). Several alternating baffles (15) are fixedly installed inside the outer tube (1). A discharge port (9) is fixedly installed at the bottom of the front side of the outer tube (1).

2. The high-efficiency condensation equipment for hydrofluoric acid preparation according to claim 1, characterized in that, A one-way valve (8) is fixedly installed at the end of the air outlet (7), and the bottom of the air outlet (7) is higher than the top of the uppermost baffle plate (15).

3. The high-efficiency condensation equipment for hydrofluoric acid preparation according to claim 1, characterized in that, The top of the coolant conduit (14) is fixedly installed through the top of the outer sleeve (1), the top of the coolant conduit (14) is connected to the inside of the anti-flow shield (13), the bottom of the coolant conduit (14) is fixedly installed through the bottom of the outer sleeve (1), and the bottom of the coolant conduit (14) is connected to the inside of the connecting cavity (6).

4. The high-efficiency condensation equipment for hydrofluoric acid preparation according to claim 2, characterized in that, The coolant conduit (14) is evenly distributed on both sides of the heat insulation partition (10). The heat insulation partition (10) is made of corrosion-resistant heat insulation board and is filled with heat insulation filler.

5. The high-efficiency condensation equipment for hydrofluoric acid preparation according to claim 1, characterized in that, The baffles (15) are arranged symmetrically and alternately on the left and right sides. Several baffles (15) are evenly distributed inside the outer sleeve (1). The coolant conduit (14) is fixedly installed through the baffles (15).

6. The high-efficiency condensation equipment for hydrofluoric acid preparation according to claim 1, characterized in that, The air inlet of the storage tank (3) is fixedly installed with the air compressor (2), a drain pipe is provided at the bottom of the storage tank (3), the electric control valve (4) is fixedly installed with the air outlet of the storage tank (3), and the air inlet of the air compressor (2) is fixedly installed with the hydrofluoric acid vapor conduit.

7. The high-efficiency condensation equipment for hydrofluoric acid preparation according to claim 1, characterized in that, The bottom of the discharge port (9) is flush with the bottom of the inner side of the outer sleeve (1).

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