Horizontal reactor for preparing hydrogen fluoride

Abstract

The utility model discloses a horizontal reactor for preparing hydrogen fluoride, which comprises a base, two groups of support plates are fixedly connected to two sides of the surface of the base, a reactor is fixedly connected to one side of each support plate, and a stirring mechanism is rotatably connected to the inside of the reactor. Through the arrangement of the refrigeration mechanism, the cooling liquid box, the heat preservation sleeve and the cavity, during cooling, cooling liquid is placed in the cooling liquid box, the temperature of the cooling liquid is controlled through the temperature sensor and the display screen on one side, and after the proper temperature is reached, the water pump on one side is started, so that the cooling liquid is cooled. A water pump conveys cooling liquid in a cooling liquid box into a cavity in a heat preservation sleeve through a flowing pipe, the surface of the reactor is cooled, the situation that an exothermic reaction occurs in the reactor, the temperature is too high, and safety accidents occur is avoided, hydrogen fluoride gas generated after the reaction can be condensed, and a hydrogen fluoride solution is formed; and compared with gas, the storage and the transportation are easier.

Description

Technical Field

[0001] The utility model relates to the technical field of hydrogen fluoride production equipment, in particular to a horizontal reactor for preparing hydrogen fluoride. Background Art

[0002] Hydrogen fluoride, with the chemical formula of HF and molecular weight of 20.01, is easily soluble in water and ethanol. Anhydrous hydrogen fluoride (AHF for short) is a colorless transparent liquid at low temperature or pressure, with a boiling point of 19.4°C, a melting point of -83.37°C, and a density of 1.008g / cm3 (water = 1). It is very easy to volatilize into white smoke at room temperature and normal temperature. Its chemical properties are extremely active and can react with alkalis, metals, oxides and silicates. Hydrogen fluoride is the basis of modern fluorine chemical industry and the most basic raw material for the preparation of elemental fluorine, various fluorine refrigerants, fluorine-containing new materials, inorganic fluoride salts, various organic fluorides, etc. Hydrogen fluoride and water It can be mixed in any mass ratio to become hydrofluoric acid (HF for short). The main method for industrial production of hydrogen fluoride is the fluorite powder-sulfuric acid method: dry fluorite (calcium fluoride) powder and ammonium sulfate are mixed in a molar ratio of 1:1.05-1.2) and sent into a rotary reactor for reaction. The material temperature in the furnace is controlled at 180-450°C. The gas after the reaction enters a washing tower to remove sulfuric acid, moisture and fluorite powder in the gas. After condensation, a crude hydrogen fluoride liquid is obtained. The crude hydrogen fluoride liquid is then passed through a degassing tower and a distillation tower to remove impurities and become a hydrogen fluoride product. The hydrogen fluoride is absorbed with water to obtain a hydrofluoric acid product.

[0003] The existing horizontal reactor for preparing hydrogen fluoride is not capable of purifying and treating the gas generated during the reaction to prevent hydrogen fluoride gas from leaking, polluting the surrounding environment, or being absorbed into the human body, endangering health.

[0004] A horizontal reaction device suitable for preparing hydrogen fluoride from calcium fluoride fine powder is disclosed in the publication number CN212370210U. The horizontal reaction device suitable for preparing hydrogen fluoride from calcium fluoride fine powder comprises: a reactor, the reactor is placed horizontally, a feeding port and a discharging port are provided at the upper part of the reactor, and a slag discharge port is provided at the bottom of the reactor; a heating jacket is arranged on the outside of the reactor, and an insulation layer is also provided on the outside of the heating jacket, and a heat medium is filled in the heating jacket; a heating pipe is arranged inside the reactor and runs through the reactor; and paddles for improving stirring efficiency are also distributed on the heating pipe. The shell of the reaction device does not need to rotate, so a feeding port and a discharging port can be provided, and the structure is relatively simple. It is also easy to seal, and no negative pressure is required during production, which is suitable for the production process of calcium fluoride fine powder as raw material. Heating the reactor by the heating jacket and the heating pipe can improve the heating efficiency of the reaction material, so that the temperature of the reaction material can be kept suitable and stable.

[0005] However, the horizontal reaction device suitable for preparing hydrogen fluoride from calcium fluoride fine powder has the following disadvantages: it is not easy to cool the device during use, on the one hand to avoid safety accidents caused by overheating of the device, and on the other hand to condense gaseous hydrogen fluoride into liquid hydrogen fluoride solution for storage. Utility Model Content

[0006] In view of the shortcomings of the prior art, the utility model provides a horizontal reactor for preparing hydrogen fluoride, which solves the problem of difficulty in cooling the equipment proposed in the above background technology.

[0007] The utility model solves the technical problem by adopting the following technical scheme: a horizontal reactor for preparing hydrogen fluoride comprises a base, two groups of support plates are fixedly connected to both sides of the surface of the base, a reactor is fixedly connected to one side of the support plate, a stirring mechanism is rotatably connected to the inside of the reactor, a stirring rod is fixedly connected to one side of the stirring mechanism, a heat preservation sleeve is sleeved on the surface of the reactor, a cavity is provided inside the heat preservation sleeve, a refrigeration mechanism is connected through the inside of the cavity, one end of the refrigeration mechanism is connected through the coolant tank, a filter chamber is fixedly connected to the top of the reactor, a slide groove is provided inside the filter chamber, a filter screen is slidably connected to the inside of the slide groove, a processing mechanism is connected to the top of the filter chamber, and a sodium hydroxide solution tank is connected to the bottom of the processing mechanism.

[0008] The stirring mechanism comprises a rotating rod rotatably connected to the inside of the reactor, one end of the rotating rod is fixedly connected to one side of the stirring rod, and one end of the rotating rod is fixedly connected to a driving motor.

[0009] The refrigeration mechanism includes a flow pipe connected to the inside of the cavity, one end of the flow pipe is connected to a water pump, the input end of the water pump is connected to one side of a coolant tank through the flow pipe, a temperature sensor is fixedly connected to the surface of the coolant tank, and one side of the temperature sensor is electrically connected to a display screen through a power cord.

[0010] The processing mechanism comprises an air pipe connected to the top of the filter chamber, an air suction fan is fixedly connected to the inside of the air pipe, and the bottom of the air pipe is connected to the surface of the sodium hydroxide solution tank.

[0011] A feeding port is fixedly connected to the top of the reactor, and a sealing cover is hingedly connected to the surface of the feeding port via a hinge.

[0012] A motor box is fixedly connected to the surface of the driving motor, and the motor box is threadedly connected to one side of the supporting plate.

[0013] The tops of the sodium hydroxide solution tank and the coolant tank are both provided with infusion ports, and the surface of the sodium hydroxide solution tank is provided with an observation window.

[0014] Four groups of threaded holes are provided on the surface of the base, and threaded columns are connected to the inner threads of the threaded holes.

[0015] The beneficial effects of the utility model are:

[0016] 1. The utility model is provided with a refrigeration mechanism, a coolant tank, a heat preservation sleeve and a cavity. When cooling is performed, the coolant is placed in the coolant tank, and the temperature of the coolant is controlled by a temperature sensor and a display screen on one side. After reaching a suitable temperature, a water pump on one side is started, and the water pump transports the coolant in the coolant tank to the cavity inside the heat preservation sleeve through a flow pipe, so as to cool the surface of the reactor, avoid an exothermic reaction inside the reactor, and prevent the temperature from being too high and a safety accident from occurring. In addition, the hydrogen fluoride gas generated after the reaction can be condensed to form a hydrogen fluoride solution, which is easier to store and transport than gas.

[0017] 2. The utility model is provided with a processing mechanism, a filter screen and a sodium hydroxide solution tank. After condensation, some hydrogen fluoride gas may remain. The suction fan on the top is started. The hydrogen fluoride gas is first filtered through the filter screen on the top, and then flows into the sodium hydroxide solution tank along the air pipe, and reacts with the sodium hydroxide solution to produce sodium fluoride, which is a non-toxic salt compound. It can effectively prevent some hydrogen fluoride gas from leaking into the surrounding atmosphere, causing environmental pollution and endangering the health of workers.

[0018] 3. The utility model, through the setting of the stirring mechanism and the stirring rod, when in use, sulfuric acid and calcium hydrofluoride are placed in the reactor from the feeding port, and then the driving motor on one side is started. The driving motor drives the stirring rod inside the reactor to stir through the rotating rod, which can increase the contact area between the sulfuric acid solution and the calcium hydrofluoride solid and accelerate the reaction rate. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The utility model is further described below in conjunction with the accompanying drawings and embodiments.

[0020] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0021] Figure 2 It is a schematic diagram of the refrigeration mechanism structure of the utility model;

[0022] Figure 3 It is a schematic diagram of the processing mechanism structure of the utility model;

[0023] Figure 4 It is a schematic diagram of the stirring mechanism structure of the utility model.

[0024] In the figure: 1. base; 2. support plate; 3. reactor; 4. stirring mechanism; 401. rotating rod; 402. driving motor; 5. stirring rod; 6. insulation sleeve; 7. cavity; 8. refrigeration mechanism; 801. circulation pipe; 802. water pump; 803. temperature sensor; 804. display screen; 9. coolant tank; 10. filter chamber; 11. filter screen; 12. processing mechanism; 1201. air pipe; 1202. suction fan; 13. sodium hydroxide solution tank; 14. feeding port; 15. sealing cover; 16. motor box; 17. infusion port; 18. threaded column. DETAILED DESCRIPTION

[0025] Now the utility model is further described in detail with reference to the accompanying drawings. These drawings are simplified schematic diagrams, which only illustrate the basic structure of the utility model in a schematic manner, and therefore only show the components related to the utility model.

[0026] See also Figures 1 to 4 The utility model provides a technical solution: a horizontal reactor for preparing hydrogen fluoride, comprising a base 1, two groups of support plates 2 are fixedly connected on both sides of the surface of the base 1, a reactor 3 is fixedly connected on one side of the support plate 2, a stirring mechanism 4 is rotatably connected inside the reactor 3, the contact area between the sulfuric acid solution and the calcium hydrofluoride solid can be increased by setting the stirring mechanism 4 and the stirring rod 5, and the reaction rate can be accelerated, a stirring rod 5 is fixedly connected on one side of the stirring mechanism 4, a heat preservation sleeve 6 is sleeved on the surface of the reactor 3, a cavity 7 is opened inside the heat preservation sleeve 6, a refrigeration mechanism 8 is connected to the inside of the cavity 7, and the exothermic reaction inside the reactor 3 is avoided by setting the refrigeration mechanism 8, the coolant tank 9, the heat preservation sleeve 6 and the cavity 7. The reaction will cause the temperature to be too high and a safety accident to occur. The hydrogen fluoride gas generated after the reaction can be condensed to form a hydrogen fluoride solution, which is easier to store and transport than gas. One end of the refrigeration mechanism 8 is connected with a coolant tank 9. The top of the reactor 3 is fixedly connected with a filter chamber 10. A chute is provided inside the filter chamber 10. A filter screen 11 is slidably connected inside the chute. The top of the filter chamber 10 is connected with a processing mechanism 12. The arrangement of the processing mechanism 12, the filter screen 11 and the sodium hydroxide solution tank 13 can effectively prevent part of the hydrogen fluoride gas from leaking into the surrounding atmosphere, causing environmental pollution and endangering the health of the staff. The bottom of the processing mechanism 12 is connected with a sodium hydroxide solution tank 13.

[0027] The stirring mechanism 4 includes a rotating rod 401 rotatably connected to the inside of the reactor 3 , one end of the rotating rod 401 is fixedly connected to one side of the stirring rod 5 , and one end of the rotating rod 401 is fixedly connected to a driving motor 402 .

[0028] The refrigeration mechanism 8 includes a flow tube 801 which is connected to the inside of the cavity 7, one end of the flow tube 801 is connected to a water pump 802, an input end of the water pump 802 is connected to one side of a coolant tank 9 through the flow tube 801, a temperature sensor 803 is fixedly connected to the surface of the coolant tank 9, and one side of the temperature sensor 803 is electrically connected to a display screen 804 through a power cord.

[0029] The processing mechanism 12 includes an air pipe 1201 connected to the top of the filter chamber 10 , an air suction fan 1202 is fixedly connected to the inside of the air pipe 1201 , and the bottom of the air pipe 1201 is connected to the surface of the sodium hydroxide solution tank 13 .

[0030] A feeding port 14 is fixedly connected to the top of the reactor 3 , and a sealing cover 15 is hingedly connected to the surface of the feeding port 14 via a hinge.

[0031] A motor box 16 is fixedly connected to the surface of the driving motor 402 , and the motor box 16 is threadedly connected to one side of the supporting plate 2 .

[0032] The tops of the sodium hydroxide solution tank 13 and the coolant tank 9 are both provided with an infusion port 17 , and the surface of the sodium hydroxide solution tank 13 is provided with an observation window.

[0033] Four groups of threaded holes are formed on the surface of the base 1 , and threaded columns 18 are connected to the inner threads of the threaded holes.

[0034] The model of temperature sensor 803 is PT100; the above parameters and models can be selected according to actual conditions.

[0035] In the utility model, the working steps of the device are as follows:

[0036] The first step: during cooling, the coolant is placed in the coolant tank 9, and the temperature of the coolant is controlled by the temperature sensor 803 and the display screen 804 on one side. After reaching the appropriate temperature, the water pump 802 on one side is started, and the water pump 802 transports the coolant in the coolant tank 9 to the cavity 7 inside the insulation jacket 6 through the flow pipe 801, so as to cool the surface of the reactor 3;

[0037] Step 2: After condensation, some hydrogen fluoride gas may remain. Start the suction fan 1202 at the top. The hydrogen fluoride gas is first filtered through the filter screen 11 at the top, and then flows into the sodium hydroxide solution tank 13 along the air pipe 1201, and reacts with the sodium hydroxide solution to produce sodium fluoride, which is a non-toxic salt compound.

[0038] The third step: when in use, sulfuric acid and calcium hydrofluoride are placed into the reactor 3 from the feed port 14, and then the drive motor 402 on one side is started. The drive motor 402 drives the stirring rod 5 inside the reactor 3 to stir through the rotating rod 401.

[0039] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "connected" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0040] Based on the above ideal embodiments of the utility model, the relevant staff can make various changes and modifications without departing from the technical concept of the utility model through the above description. The technical scope of the utility model is not limited to the content of the specification, and its technical scope must be determined according to the scope of the claims.

Claims

1. A horizontal reactor for preparing hydrogen fluoride, comprising a base (1), characterized in that: Two groups of support plates (2) are fixedly connected to both sides of the surface of the base (1); a reactor (3) is fixedly connected to one side of the support plate (2); a stirring mechanism (4) is rotatably connected to the interior of the reactor (3); a stirring rod (5) is fixedly connected to one side of the stirring mechanism (4); a heat preservation sleeve (6) is sleeved on the surface of the reactor (3); a cavity (7) is provided inside the heat preservation sleeve (6); a refrigeration mechanism (8) is connected to the interior of the cavity (7); one end of the refrigeration mechanism (8) is connected to a coolant tank (9); a filter chamber (10) is fixedly connected to the top of the reactor (3); a slide groove is provided inside the filter chamber (10); a filter screen (11) is slidably connected to the interior of the slide groove; a processing mechanism (12) is connected to the top of the filter chamber (10); and a sodium hydroxide solution tank (13) is connected to the bottom of the processing mechanism (12).

2. A horizontal reactor for preparing hydrogen fluoride according to claim 1, characterized in that: The stirring mechanism (4) comprises a rotating rod (401) rotatably connected to the inside of the reactor (3), one end of the rotating rod (401) is fixedly connected to one side of the stirring rod (5), and one end of the rotating rod (401) is fixedly connected to a driving motor (402).

3. A horizontal reactor for preparing hydrogen fluoride according to claim 1, characterized in that: The refrigeration mechanism (8) comprises a circulation tube (801) connected to the inside of the cavity (7), one end of the circulation tube (801) is connected to a water pump (802), the input end of the water pump (802) is connected to one side of a coolant tank (9) through the circulation tube (801), a temperature sensor (803) is fixedly connected to the surface of the coolant tank (9), and one side of the temperature sensor (803) is electrically connected to a display screen (804) through a power line.

4. A horizontal reactor for preparing hydrogen fluoride according to claim 1, characterized in that: The processing mechanism (12) comprises an air pipe (1201) connected to the top of the filter chamber (10), an air suction fan (1202) is fixedly connected to the inside of the air pipe (1201), and the bottom of the air pipe (1201) is connected to the surface of the sodium hydroxide solution tank (13).

5. A horizontal reactor for preparing hydrogen fluoride according to claim 1, characterized in that: A feeding port (14) is fixedly connected to the top of the reactor (3), and a sealing cover (15) is hingedly connected to the surface of the feeding port (14) via a hinge.

6. A horizontal reactor for preparing hydrogen fluoride according to claim 2, characterized in that: A motor box (16) is fixedly connected to the surface of the driving motor (402), and the motor box (16) is threadedly connected to one side of the support plate (2).

7. A horizontal reactor for preparing hydrogen fluoride according to claim 1, characterized in that: The tops of the sodium hydroxide solution tank (13) and the coolant tank (9) are both provided with infusion ports (17), and the surface of the sodium hydroxide solution tank (13) is provided with an observation window.

8. A horizontal reactor for preparing hydrogen fluoride according to claim 1, characterized in that: Four groups of threaded holes are provided on the surface of the base (1), and threaded columns (18) are connected to the internal threads of the threaded holes.

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