Hydrogen fluoride evaporation equipment

Abstract

The utility model relates to the technical field of production capacity of hydrogen fluoride evaporation systems, in particular to hydrogen fluoride evaporation equipment which comprises a shell pass, a tube pass upper tube box and a tube pass lower tube box, the shell pass comprises a shell pass saturated evaporation section and a shell pass superheat section which are communicated, heat exchange tubes are arranged in the shell pass saturated evaporation section and the shell pass superheat section, and the shell pass upper tube box and the shell pass lower tube box are communicated. The tube pass upper tube box and the tube pass lower tube box are communicated through the heat exchange tube; a hydrogen fluoride inlet is formed in the bottom of the shell pass saturation evaporation section; and a hydrogen fluoride gas outlet is formed in the top of the shell pass overheating section. The hydrogen fluoride evaporation tank overcomes the defects of a traditional hydrogen fluoride evaporation tank, provides a safer and more efficient mode to improve the evaporation and supply capacity of hydrogen fluoride, meets the requirements of an existing process, reduces the storage amount of hydrogen fluoride, reduces steam consumption, improves the production efficiency and reduces the safety risk level.

Description

Technical Field

[0001] This utility model relates to the technical field of production capacity of hydrogen fluoride evaporation systems, and specifically to a hydrogen fluoride evaporation device. Background Technology

[0002] Currently, the main equipment in my country's hydrogen fluoride heating, evaporation, and feeding systems is the jacketed hydrogen fluoride evaporator. Because the amount of hydrogen fluoride stored in these evaporators is relatively large, a leak could cause widespread diffusion, resulting in a significant hazard to personnel and the environment. Furthermore, with the continuous and stable operation of the main process, the current production capacity of the hydrogen fluoride evaporation system is no longer sufficient to match the capacity and demands of the main process production line.

[0003] Furthermore, due to the large volume of the hydrogen fluoride evaporator, the jacketed heating method cannot effectively and promptly control the pressure and evaporation rate of the hydrogen fluoride inside the tank. During the heating and evaporation process, the tank body is susceptible to corrosion due to temperature and the presence of the hydrogen fluoride medium, resulting in a high operational risk. Utility Model Content

[0004] To address the aforementioned technical problems, the purpose of this utility model is to provide a hydrogen fluoride evaporation device. This utility model offers a safer and more efficient way to improve the evaporation and supply capacity of hydrogen fluoride, while meeting existing process requirements, reducing hydrogen fluoride storage, lowering steam consumption, improving production efficiency, and reducing safety risk levels.

[0005] To solve the above-mentioned technical problems, the present invention adopts the following technical solution:

[0006] A hydrogen fluoride evaporation device includes a shell side, an upper tube box, and a lower tube box. The shell side includes a shell-side saturated evaporation section and a shell-side superheating section that are connected to each other. The shell-side saturated evaporation section is detachably connected to the lower tube box, and the shell-side superheating section is detachably connected to the upper tube box. The shell-side saturated evaporation section and the shell-side superheating section are structurally a single unit, but are divided into two sections by process control. The shell-side saturated evaporation section is used to vaporize and evaporate hydrogen fluoride, and the shell-side superheating section is used to further heat the vaporized hydrogen fluoride to evaporate and discharge it.

[0007] Heat exchange tubes are provided in the shell-side saturated evaporation section and the shell-side superheated section. The upper tube box and the lower tube box are connected through the heat exchange tubes. The upper tube box, the lower tube box, and the heat exchange tubes are used to heat hydrogen fluoride.

[0008] The shell-side saturated evaporation section is equipped with a hydrogen fluoride inlet at its bottom. Liquid anhydrous hydrogen fluoride is introduced into the shell-side saturated evaporation section through the hydrogen fluoride inlet. Then, steam enters from the steam inlet, passes through the upper tube box of the tube side, enters the heat exchange tubes, and then enters the lower tube box of the tube side to heat and evaporate the hydrogen fluoride in the saturated evaporation section, causing the hydrogen fluoride to vaporize. The vaporized hydrogen fluoride enters the shell-side superheated section from the saturated evaporation section, where it is heated to a certain pressure and temperature. The shell-side superheated section is equipped with a hydrogen fluoride gas outlet at its top, from which the evaporated hydrogen fluoride gas is discharged, thus realizing the evaporation process of hydrogen fluoride.

[0009] Steam heats liquid anhydrous hydrogen fluoride by passing through the upper tube box, heat exchange tubes, and lower tube box, causing the hydrogen fluoride to vaporize.

[0010] The shell side is divided into two sections: the shell side saturated evaporation section and the shell side superheating section. Hydrogen fluoride is evaporated in the shell side saturated evaporation section, and the vaporized hydrogen fluoride is heated to a certain pressure and temperature in the shell side superheating section.

[0011] Preferably, the shell-side saturated evaporation section and the tube-side lower tube box are detachably connected by bolts through the lower tube sheet of the shell-side saturated evaporation section and the flange of the tube-side lower tube box. The shell-side saturated evaporation section and the tube-side lower tube box are not connected, while the tube-side lower tube box is connected to the heat exchange tubes.

[0012] Preferably, the shell-side superheated section and the upper tube box are detachably connected by bolts through the upper tube sheet of the shell-side superheated section and the flange of the upper tube box. The shell-side superheated section and the upper tube box are not connected, and the upper tube box and the lower tube box are connected through heat exchange tubes.

[0013] Preferably, the upper tube box is provided with a steam inlet at the top and the lower tube box is provided with a condensate outlet at the bottom. Steam enters the upper tube box through the steam inlet and enters the heat exchange tubes from the upper tube box to heat the hydrogen fluoride in the saturated evaporation section and the shell-side superheated section. The steam circulates in the heat exchange tubes through the upper and lower tube boxes and the condensed steam flows out through the condensate outlet.

[0014] Preferably, the upper part of the shell-side superheated section is provided with a pressure gauge port and a thermometer port, so that the vaporized hydrogen fluoride is heated to the pressure and temperature required by the subsequent process.

[0015] Preferably, the bottom and top of the shell-side saturated evaporation section are equipped with level gauge ports. By observing the pressure gauge port, thermometer port, and level gauge port, the pressure and evaporation rate of hydrogen fluoride in the evaporation equipment can be well controlled.

[0016] Preferably, the liquid level of hydrogen fluoride in the shell-side saturated evaporation section is 440 mm to 600 mm.

[0017] Preferably, a heat exchange tube sleeve is provided at the bottom of the heat exchange tube, and the heat exchange tube is fixed inside the heat exchange tube sleeve.

[0018] Preferably, the heat exchange tube sleeve is made of polytetrafluoroethylene, which is resistant to hydrogen fluoride corrosion.

[0019] Preferably, the hydrogen fluoride is liquid anhydrous hydrogen fluoride.

[0020] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0021] 11. This utility model provides a hydrogen fluoride evaporation device, including a shell side, an upper tube box, and a lower tube box. The shell side includes a shell-side saturated evaporation section and a shell-side superheated section connected in series. Heat exchange tubes are installed in the shell-side saturated evaporation section and the shell-side superheated section. The upper tube box and the lower tube box are connected through the heat exchange tubes. A hydrogen fluoride inlet is located at the bottom of the shell-side saturated evaporation section, and a hydrogen fluoride gas outlet is located at the top of the shell-side superheated section. Steam passes through the upper tube box, heat exchange tubes, and lower tube box to heat liquid anhydrous hydrogen fluoride, causing the hydrogen fluoride to vaporize. The vaporized hydrogen fluoride in the shell-side saturated evaporation section enters the shell-side superheated section, where it is heated to a certain pressure and temperature before being discharged from the hydrogen fluoride gas outlet. This invention addresses the shortcomings of traditional hydrogen fluoride evaporators, providing a safer and more efficient way to improve the evaporation and supply capacity of hydrogen fluoride, while meeting existing process requirements, reducing hydrogen fluoride storage, lowering steam consumption, improving production efficiency, and reducing safety risk levels.

[0022] 12. This utility model has a pressure gauge port and a thermometer port at the upper part of the shell-side superheated section to heat the vaporized hydrogen fluoride to the pressure and temperature required by the subsequent process. The bottom and top of the shell-side saturated evaporation section are equipped with level gauge ports to control the liquid anhydrous hydrogen fluoride level to a height of 440mm~660mm. A heat exchange tube sleeve is installed at this liquid level. The heat exchange tube sleeve is made of polytetrafluoroethylene, which is resistant to hydrogen fluoride corrosion. Attached Figure Description

[0023] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0024] Figure 1 This is a cross-sectional view of a hydrogen fluoride evaporation device according to the present invention.

[0025] Explanation of reference numerals in the attached diagram: 1-Steam inlet, 2-Upper tube box of the tube side, 3-Hydrogen fluoride gas outlet, 4-Thermometer port, 5-Shell side superheating section, 6-Level gauge port, 7-Shell side saturated evaporation section, 8-Heat exchange tube sleeve, 9-Heat exchange tube, 10-Hydrogen fluoride inlet, 11-Lower tube box of the tube side, 12-Condensate outlet. Detailed Implementation

[0026] The technical solutions in the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings.

[0027] A hydrogen fluoride evaporation device, such as Figure 1 As shown, the system includes a shell side, an upper tube box 2, and a lower tube box 11. The shell side includes a shell-side saturated evaporation section 7 and a shell-side superheated section 5 that are connected to each other. The shell-side saturated evaporation section 7 is detachably connected to the lower tube box 11, and the shell-side superheated section 5 is detachably connected to the upper tube box 2. The detachable connection between the shell-side saturated evaporation section and the lower tube box is achieved by bolting the lower tube sheet of the shell-side saturated evaporation section to the flange of the lower tube box. Similarly, the detachable connection between the shell-side superheated section and the upper tube box is achieved by bolting the upper tube sheet of the shell-side superheated section to the flange of the upper tube box. The shell-side saturated evaporation section 7 and the shell-side superheating section 5 are structurally integrated, but are divided into two sections by the process. The shell-side saturated evaporation section 7 is used to vaporize and evaporate hydrogen fluoride, and the shell-side superheating section 5 is used to heat the vaporized hydrogen fluoride to a certain pressure and temperature, causing it to evaporate and be discharged. Heat exchange tubes 9 are installed in both the shell-side saturated evaporation section 7 and the shell-side superheating section 5, and the upper tube box 2 and the lower tube box 11 are connected through the heat exchange tubes 9. Steam passes through the upper tube box 2, the heat exchange tubes 9, and the lower tube box 11 to heat the liquid anhydrous hydrogen fluoride, causing it to vaporize. The hydrogen fluoride is evaporated in the shell-side saturated evaporation section 7, and the vaporized hydrogen fluoride is heated to a certain pressure and temperature in the shell-side superheating section 5. The bottom of the shell-side saturated evaporation section 7 has a hydrogen fluoride inlet 10, and the top of the shell-side superheating section 5 has a hydrogen fluoride gas outlet 3.

[0028] When evaporating hydrogen fluoride, liquid anhydrous hydrogen fluoride is first introduced into the shell-side saturated evaporation section 7 through the hydrogen fluoride inlet 10. Then, steam enters from the steam inlet 1, passes through the upper tube box 2, enters the heat exchange tube 9, and then enters the lower tube box 11 to heat and evaporate the hydrogen fluoride in the saturated evaporation section 7, causing the hydrogen fluoride to vaporize. The vaporized hydrogen fluoride enters the shell-side superheated section 5 from the saturated evaporation section 7. In the shell-side superheated section 5, the vaporized hydrogen fluoride is heated to a certain pressure and temperature. The top of the shell-side superheated section 5 is provided with a hydrogen fluoride gas outlet. The evaporated hydrogen fluoride is discharged from the hydrogen fluoride gas outlet 3, thus realizing the evaporation process of hydrogen fluoride.

[0029] The upper tube box 2 is provided with a steam inlet 1 at the top, and the lower tube box 11 is provided with a condensate outlet 12 at the bottom. Steam enters the upper tube box through the steam inlet 1, and then enters the heat exchange tube 9 from the upper tube box 2 to heat the hydrogen fluoride in the saturated evaporation section 7 and the shell-side superheated section 5. The steam circulates in the heat exchange tube 9 through the upper tube box 11 and the lower tube box 11. The condensed steam flows out through the condensate outlet 12, thus achieving the heating effect on the hydrogen fluoride.

[0030] The upper part of the shell-side superheated section 5 is equipped with a pressure gauge port and a thermometer port 4, so that the vaporized hydrogen fluoride is heated to the pressure and temperature required by the subsequent process.

[0031] The bottom and top of the shell-side saturated evaporation section 7 are equipped with level gauge ports 6. By observing the pressure gauge port, thermometer port 4 and level gauge port 6, the pressure and evaporation rate of hydrogen fluoride in the evaporation equipment can be well controlled. The liquid level of hydrogen fluoride in the shell-side saturated evaporation section 7 is 440 mm to 600 mm.

[0032] The heat exchange tube 9 is provided with a heat exchange tube sleeve 8 at its bottom, and the heat exchange tube 9 is fixed inside the heat exchange tube sleeve 8.

[0033] The heat exchanger sleeve 8 is made of polytetrafluoroethylene, which is resistant to hydrogen fluoride corrosion.

[0034] The hydrogen fluoride is liquid anhydrous hydrogen fluoride.

[0035] Principle of use

[0036] This utility model discloses a hydrogen fluoride evaporation device. Steam enters from steam inlet 1, passes through the upper tube box 2, enters the heat exchange tube 9, and then enters the lower tube box 11 to achieve the purpose of heating. Liquid anhydrous hydrogen fluoride enters the shell-side saturated evaporation section 7 through hydrogen fluoride inlet 10 for heating, evaporating and vaporizing the hydrogen fluoride. Then it enters the shell-side superheating section 5, where the vaporized hydrogen fluoride is heated to a certain pressure and temperature, and discharged from the hydrogen fluoride gas outlet 3.

[0037] Steam heats liquid anhydrous hydrogen fluoride through the upper tube box 2, heat exchange tube 9, and lower tube box 11, causing the hydrogen fluoride to vaporize. The shell side is divided into two sections: a saturated evaporation section 7 and a superheated section 5. In the saturated evaporation section 7, the hydrogen fluoride is evaporated. In the superheated section 5, the vaporized hydrogen fluoride is heated to a certain pressure and temperature. A pressure gauge and a thermometer are installed at the top of the superheated section 5 to heat the vaporized hydrogen fluoride to the pressure and temperature required for subsequent processes. The bottom and top of the saturated evaporation section 7 are equipped with level gauges 6 to control the liquid anhydrous hydrogen fluoride level to a height of 440mm~660mm. A heat exchange tube sleeve 8 is installed at this level. The heat exchange tube sleeve is made of polytetrafluoroethylene (PTFE) and is resistant to hydrogen fluoride corrosion. This invention addresses the shortcomings of traditional hydrogen fluoride evaporators, providing a safer and more efficient way to improve the evaporation and supply capacity of hydrogen fluoride, while meeting existing process requirements, reducing hydrogen fluoride storage, lowering steam consumption, improving production efficiency, and reducing safety risk levels.

[0038] Obviously, those skilled in the art can make various modifications and variations to this utility model without departing from its spirit and scope. Therefore, if these modifications and variations fall within the scope of the claims of this utility model and their equivalents, this utility model also intends to include these modifications and variations.

Claims

1. A hydrogen fluoride evaporation device, characterized in that, It includes a shell side, an upper tube box (2) and a lower tube box (11). The shell side includes a shell side saturated evaporation section (7) and a shell side superheating section (5) that are connected to each other. The shell side saturated evaporation section (7) is used to vaporize and evaporate hydrogen fluoride. The shell side superheating section (5) is used to further heat the vaporized hydrogen fluoride so that the hydrogen fluoride evaporates and is discharged. The shell side saturated evaporation section (7) is detachably connected to the lower tube box (11), and the shell side superheating section (5) is detachably connected to the upper tube box (2). Heat exchange tubes (9) are provided in the shell-side saturated evaporation section (7) and the shell-side superheated section (5). The upper tube box (2) and the lower tube box (11) are connected through the heat exchange tubes (9). The upper tube box (2), the lower tube box (11) and the heat exchange tubes (9) are used to heat hydrogen fluoride. The bottom of the shell-side saturated evaporation section (7) is provided with a hydrogen fluoride inlet (10), and the top of the shell-side superheated section (5) is provided with a hydrogen fluoride gas outlet (3).

2. The hydrogen fluoride evaporation equipment according to claim 1, characterized in that, The shell-side saturated evaporation section (7) and the tube-side lower tube box (11) are detachably connected by bolts through the lower tube sheet of the shell-side saturated evaporation section (7) and the flange of the tube-side lower tube box (11).

3. The hydrogen fluoride evaporation equipment according to claim 1, characterized in that, The shell-side superheated section (5) and the tube-side upper tube box (2) are detachably connected by bolts through the upper tube sheet of the shell-side superheated section (5) and the flange of the tube-side upper tube box (2).

4. The hydrogen fluoride evaporation equipment according to claim 1, characterized in that, The upper tube box (2) is provided with a steam inlet (1) at the top, and the lower tube box (11) is provided with a condensate outlet (12) at the bottom.

5. The hydrogen fluoride evaporation equipment according to claim 1, characterized in that, The upper part of the shell-side superheated section (5) is equipped with a pressure gauge port and a thermometer port (4).

6. The hydrogen fluoride evaporation equipment according to claim 1, characterized in that, The shell-side saturated evaporation section (7) is equipped with level gauge ports (6) at both the bottom and top.

7. The hydrogen fluoride evaporation equipment according to claim 1, characterized in that, The liquid level of hydrogen fluoride in the shell-side saturated evaporation section (7) is 440 mm to 600 mm.

8. The hydrogen fluoride evaporation equipment according to claim 1, characterized in that, The heat exchange tube (9) is provided with a heat exchange tube sleeve (8) at the bottom.

9. The hydrogen fluoride evaporation equipment according to claim 8, characterized in that, The heat exchange tube sleeve (8) is made of polytetrafluoroethylene.

10. The hydrogen fluoride evaporation apparatus according to claim 1, characterized in that, The hydrogen fluoride is liquid anhydrous hydrogen fluoride.

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