pph hydrofluoric acid cooling tower heat exchange device

Abstract

The invention discloses a PPH hydrofluoric acid cooling tower heat exchange device, and relates to the technical field of heat exchange equipment. The device comprises a cooling tower body, which comprises a bottom cooling cylinder, a spliced ​​cylinder and an absorption cylinder, which are connected and arranged, and which are all composed of an outer protective shell and an inner cylinder, and the inner cylinder is inserted into the inner cavity of the outer protective shell, and a cooling cavity is arranged between the outer protective shell and the inner cylinder, and the cooling cavities of the bottom cooling cylinder, the spliced ​​cylinder and the absorption cylinder are connected and arranged, and the main cooling pipe, the auxiliary cooling pipe, the inner guide pipe and the outer guide pipe of the cooler are arranged in an inner and outer double layer, which can perform double cooling on hydrogen fluoride gas and improve condensation efficiency, and the bottom of the inner guide pipe and the outer guide pipe are openly arranged, so that the hydrogen fluoride liquid condensed on the outer wall of the main cooling pipe and the auxiliary cooling pipe is separated from the hydrogen fluoride gas, and no separation operation needs to be performed again.

Description

Technical Field

[0001] The invention relates to the technical field of heat exchange equipment, in particular to a pph hydrofluoric acid cooling tower heat exchange device. Background Art

[0002] Anhydrous hydrofluoric acid, also known as anhydrous hydrogen fluoride, is a widely used chemical product. It is a colorless fuming liquid with a hydrofluoric acid content of more than 99%. It is easily vaporized under reduced pressure or high temperature. It is mainly used to prepare fluoride salts, fluorohaloalkanes, fluorine refrigerants, corrode glass, impregnate wood, electrolyze elemental fluorine, etc. The boiling point of hydrofluoric acid is 19.5°C at normal pressure. Therefore, the top condensers of the distillation tower and degassing tower in the normal pressure process must use chilled water for condensation.

[0003] At present, enterprises usually use simple condensation tubes for condensation in the production process of hydrofluoric acid, which has low condensation efficiency;

[0004] In addition, a condenser is used to condense the hydrofluoric acid gas, and the condensed hydrogen fluoride liquid and hydrogen fluoride gas are mixed, which requires a gas-liquid separation operation, which is relatively complicated.

[0005] Therefore, we make improvements to this and propose a pph hydrofluoric acid cooling tower heat exchange device. Summary of the invention

[0006] In view of the shortcomings of the prior art, the present invention provides a pph hydrofluoric acid cooling tower heat exchange device, which solves the problems of low condensation efficiency and mixing of condensed hydrogen fluoride liquid and hydrogen fluoride gas, requiring gas-liquid separation operation, in the prior art using a condenser for condensation.

[0007] To achieve the above objectives, the present invention is implemented through the following technical solutions: a pph hydrofluoric acid cooling tower heat exchange device, including a cooling tower body, the cooling tower body including a bottom cooling cylinder, a spliced ​​cylinder and an absorption cylinder, the bottom cooling cylinder, the spliced ​​cylinder and the absorption cylinder are connected, the bottom cooling cylinder, the spliced ​​cylinder and the absorption cylinder are all composed of an outer protective shell and an inner cylinder, the inner cylinder is inserted into the inner cavity of the outer protective shell, a cooling cavity is provided between the outer protective shell and the inner cylinder, and the cooling cavities of the bottom cooling cylinder, the spliced ​​cylinder and the absorption cylinder are connected;

[0008] The split cylinder is spliced ​​and arranged on the upper part of the bottom cooling cylinder, and the absorption cylinder is spliced ​​and arranged on the upper part of the split cylinder;

[0009] The inner cavity of the bottom cooling cylinder is fixedly provided with a cooler, and the cooler includes a main cooling pipe, an auxiliary cooling pipe, an inner guide pipe and an outer guide pipe. A plurality of auxiliary cooling pipes are provided, and the auxiliary cooling pipes are evenly distributed on the outside of the main cooling pipe along the circumferential direction of the axis of the main cooling pipe. Both ends of the auxiliary cooling pipe are connected with both ends of the main cooling pipe. The inner guide pipe is sleeved on the outside of the main cooling pipe, the auxiliary cooling pipe is arranged on the outside of the inner guide pipe, and the outer guide pipe is sleeved on the outside of the inner guide pipe. The plurality of auxiliary cooling pipes are arranged in the inner cavity of the outer guide pipe.

[0010] The front end of the main cooling pipe is fixedly and sealed with the front ends of the inner flow guide pipe and the outer flow guide pipe, and the front end outer wall of the inner flow guide pipe is provided with a plurality of evenly distributed vents, which are connected with the outer flow guide pipe;

[0011] The main cooling pipe, inner guide pipe and outer guide pipe are arranged at the lower part of the absorption cylinder, the front end of the auxiliary cooling pipe is arranged in the inner cavity of the absorption cylinder, and the front end of the auxiliary cooling pipe is connected to the cooling cavity of the absorption cylinder.

[0012] As a preferred solution, a fixing tube is fixedly provided at the end of the main cooling tube, an air guide tube is fixedly provided in the middle of the inner cavity of the fixing tube, and the end of the main cooling tube is fixedly arranged in the air guide tube;

[0013] The end of the inner flow guide pipe is provided with a gas collecting cylinder, which is a truncated cone-shaped tube structure, and the upper part of the gas guide pipe is arranged in the inner cavity of the gas collecting cylinder;

[0014] The side wall of the air guide pipe is laterally connected to an air inlet pipe, the end side wall of the main cooling pipe is connected to a water inlet pipe, and the ends of the air inlet pipe and the water inlet pipe are arranged outside the bottom cooling cylinder; the bottom side wall of the outer protective shell of the bottom cooling cylinder is connected to a water outlet pipe, and the water outlet pipe is connected to the cooling cavity.

[0015] As a preferred solution, a base is provided at the bottom of the bottom cooling cylinder, the base is fixedly connected to the outer protective shell of the bottom cooling cylinder, a fixing seat A is provided in the middle of the upper surface of the base, and the inner cylinder of the bottom cooling cylinder is tightly inserted in the fixing seat A;

[0016] A material storage barrel is fixedly arranged in the middle of the inner cavity of the fixing seat A, a fixing seat B is fixedly arranged on the upper part of the material storage barrel, and the fixing barrel is inserted into the fixing seat B;

[0017] The bottom of the storage barrel is provided with a valve, and the valve is arranged at the bottom of the base;

[0018] The bottom wall of the fixed cylinder is provided with a plurality of evenly distributed through holes, and the fixed cylinder is connected with the storage cylinder through the through holes.

[0019] As a preferred solution, the inner cylinder, cooler, fixed cylinder, air guide pipe, air collecting cylinder, air inlet pipe, water inlet pipe, fixed seat A, storage cylinder and fixed seat B are all made of pph material.

[0020] As a preferred solution, the inner cavity side wall of the outer protective shell is longitudinally provided with a plurality of evenly distributed grooves, and the outer wall of the inner cylinder is longitudinally provided with a plurality of evenly distributed plug-ins, the grooves and the plug-ins are arranged one by one, and the plug-ins are inserted into the grooves;

[0021] The outer wall of the insert plate is provided with a plurality of through holes at uniform portions, and the insert plates of the inner cylinder of the bottom cooling cylinder, the combined cylinder and the absorption cylinder are arranged in an overlapping manner.

[0022] As a preferred solution, flanges are provided at both ends of the outer protective shell, the bottom cooling cylinder, the combined cylinder and the absorption cylinder are connected via the flanges, and the bottom cooling cylinder is fixedly connected to the base via the flanges.

[0023] As a preferred solution, the upper ends of the inner cylinders of the bottom cooling cylinder and the combined cylinder are provided with insert rings, and the lower ends of the inner cylinders of the combined cylinder and the absorption cylinder are provided with slots;

[0024] The insert ring of the inner cylinder of the bottom cooling cylinder is inserted and sealed with the slot of the inner cylinder of the combined cylinder;

[0025] The inserting ring of the inner cylinder of the assembled cylinder is inserted and sealed with the slot of the inner cylinder of the absorption cylinder.

[0026] As a preferred solution, the upper part of the outer protective shell of the absorption cylinder is sealed by a flange and a sealing plate;

[0027] The two ends of the inner cylinder of the absorption cylinder are closed, a water injection pipe is provided on the upper part of the inner cylinder of the absorption cylinder, the water injection pipe is arranged outside the absorption cylinder, and a drainage pipe is provided at the bottom of the side wall of the inner cylinder of the absorption cylinder, the drainage pipe is arranged outside the absorption cylinder;

[0028] A one-way air valve is arranged at the bottom of the inner cavity of the inner cylinder of the absorption cylinder, and the one-way air valve is connected with the bottom cooling cylinder and the inner cylinder of the combined cylinder.

[0029] As a preferred solution, the inner cavity of the inner cylinder of the absorption cylinder is provided with a protection tube, and the one-way air valve is arranged in the inner cavity of the protection tube;

[0030] The upper part of the protection tube is sealed, and the upper side wall of the protection tube is connected with a plurality of evenly spaced bronchi, and the ends of the bronchi are arranged at the lower part of the inner cavity of the inner cylinder of the absorption cylinder;

[0031] The drainage pipe, one-way air valve, protective pipe and bronchial pipe are all made of PPH material.

[0032] The present invention has the following beneficial effects:

[0033] The main cooling pipe, auxiliary cooling pipe, inner guide pipe and outer guide pipe of the cooler are arranged in inner and outer layers, which can double-cool the hydrogen fluoride gas and improve the condensation efficiency;

[0034] Taking advantage of the fact that hydrogen fluoride gas is lighter than air, the hydrogen fluoride gas is retained in the outer guide tube for a long time, and the hydrogen fluoride gas is cooled through the auxiliary cooling tube to further improve the condensation efficiency;

[0035] The bottoms of the inner and outer draft tubes are open, so that the hydrogen fluoride liquid condensed on the outer walls of the main cooling tube and the auxiliary cooling tube is separated from the hydrogen fluoride gas without the need for a second separation operation;

[0036] After the low-temperature ice water in the cooler cools the hydrogen fluoride gas, it enters the cooling chamber to ensure the low-temperature environment of the inner cylinder, preventing the hydrogen fluoride liquid from being heated and vaporized again, thereby ensuring the condensation efficiency.

[0037] Of course, any product implementing the present invention does not necessarily need to achieve all of the advantages described above at the same time. BRIEF DESCRIPTION OF THE DRAWINGS

[0038] Figure 1 It is a schematic diagram of the overall structure of the heat exchange device of the pph hydrofluoric acid cooling tower of the present invention;

[0039] Figure 2 It is a schematic diagram of the bottom cooling cylinder and cooler structure of the heat exchange device of the pph hydrofluoric acid cooling tower of the present invention;

[0040] Figure 3 It is a schematic diagram of the cooler structure of the heat exchange device of the pph hydrofluoric acid cooling tower of the present invention;

[0041] Figure 4 It is a schematic diagram of the cross-sectional structure of a cooler of a pph hydrofluoric acid cooling tower heat exchange device of the present invention;

[0042] Figure 5 for Figure 4 A schematic diagram of the enlarged structure of local A;

[0043] Figure 6 for Figure 4 A schematic diagram of the enlarged structure of local B;

[0044] Figure 7 This is a schematic diagram of the base structure of the pph hydrofluoric acid cooling tower heat exchange device of the present invention;

[0045] Figure 8 It is a schematic diagram of the bottom cooling cylinder structure of the heat exchange device of the pph hydrofluoric acid cooling tower of the present invention;

[0046] Fig. 9 It is a schematic diagram of the combined cylinder structure of the heat exchange device of the pph hydrofluoric acid cooling tower of the present invention;

[0047] Fig.10 It is a schematic diagram of the absorption cylinder structure of the pph hydrofluoric acid cooling tower heat exchange device of the present invention;

[0048] Fig.11 It is a schematic diagram of the cross-sectional structure of the inner cylinder of the absorption cylinder of the pph hydrofluoric acid cooling tower heat exchange device of the present invention;

[0049] In the figure, 1. cooling tower body; 2. bottom cooling cylinder; 3. combined cylinder; 4. absorption cylinder; 5. outer protective shell; 6. inner cylinder; 7. cooling chamber; 8. cooler; 9. main cooling pipe; 10. auxiliary cooling pipe; 11. inner guide pipe; 12. outer guide pipe; 13. vent; 14. fixed cylinder; 15. air guide pipe; 16. gas collecting cylinder; 17. air inlet pipe; 18. water inlet pipe; 19. water outlet pipe; 20. base; 21. fixing seat A; 22. storage cylinder; 23. fixing seat B; 24. valve; 25. groove; 26. plug plate; 27. flange; 28. plug ring; 29. ​​slot; 30. sealing plate; 31. water injection pipe; 32. drain pipe; 33. one-way air valve; 34. protective pipe; 35. bronchus. DETAILED DESCRIPTION

[0050] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0051] In the description of the present invention, it should be understood that the terms "opening", "upper", "lower", "thickness", "top", "middle", "length", "inside", "all around" and the like indicating orientation or positional relationship are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the components or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0052] For examples, see Figures 1 to 11The embodiment of the present invention provides a technical solution: a pph hydrofluoric acid cooling tower heat exchange device, comprising a cooling tower body 1, the cooling tower body 1 comprising a bottom cooling cylinder 2, a spliced ​​cylinder 3 and an absorption cylinder 4, the bottom cooling cylinder 2, the spliced ​​cylinder 3 and the absorption cylinder 4 are connected, the bottom cooling cylinder 2, the spliced ​​cylinder 3 and the absorption cylinder 4 are all composed of an outer protective shell 5 and an inner cylinder 6, the inner cylinder 6 is inserted into the inner cavity of the outer protective shell 5, a cooling cavity 7 is provided between the outer protective shell 5 and the inner cylinder 6, and the cooling cavities 7 of the bottom cooling cylinder 2, the spliced ​​cylinder 3 and the absorption cylinder 4 are connected;

[0053] The split cylinder 3 is spliced ​​and arranged on the upper part of the bottom cooling cylinder 2, and the absorption cylinder 4 is spliced ​​and arranged on the upper part of the split cylinder 3;

[0054] The inner cavity of the bottom cooling cylinder 2 is fixedly provided with a cooler 8, and the cooler 8 includes a main cooling pipe 9, an auxiliary cooling pipe 10, an inner guide pipe 11 and an outer guide pipe 12. A plurality of auxiliary cooling pipes 10 are provided, and the auxiliary cooling pipes 10 are evenly distributed on the outside of the main cooling pipe 9 along the circumferential direction of the axis of the main cooling pipe 9. Both ends of the auxiliary cooling pipe 10 are connected with both ends of the main cooling pipe 9. The inner guide pipe 11 is sleeved on the outside of the main cooling pipe 9, the auxiliary cooling pipe 10 is arranged on the outside of the inner guide pipe 11, and the outer guide pipe 12 is sleeved on the outside of the inner guide pipe 11. The plurality of auxiliary cooling pipes 10 are arranged in the inner cavity of the outer guide pipe 12;

[0055] The length of the inner flow guide tube 11 is greater than the length of the outer flow guide tube 12;

[0056] The front end of the main cooling pipe 9 is fixedly and sealed with the front ends of the inner flow guide pipe 11 and the outer flow guide pipe 12. The front end outer wall of the inner flow guide pipe 11 is provided with a plurality of evenly distributed vents 13, which are connected to the outer flow guide pipe 12.

[0057] The main cooling pipe 9, inner guide pipe 11 and outer guide pipe 12 are arranged at the lower part of the absorption cylinder 4, the front end of the auxiliary cooling pipe 10 is arranged in the inner cavity of the absorption cylinder 4, and the front end of the auxiliary cooling pipe 10 is connected to the cooling cavity 7 of the absorption cylinder 4.

[0058] A fixing tube 14 is fixedly provided at the end of the main cooling tube 9, an air guide tube 15 is fixedly provided in the middle of the inner cavity of the fixing tube 14, and the end of the main cooling tube 9 is fixedly arranged in the air guide tube 15;

[0059] The end of the inner flow guide tube 11 is provided with a gas collecting cylinder 16, which is a truncated cone-shaped tube structure, and the upper part of the gas guide tube 15 is arranged in the inner cavity of the gas collecting cylinder 16;

[0060] An air inlet pipe 17 is laterally connected to the side wall of the air guide pipe 15, and a water inlet pipe 18 is connected to the end side wall of the main cooling pipe 9. The ends of the air inlet pipe 17 and the water inlet pipe 18 are arranged outside the bottom cooling cylinder 2; a water outlet pipe 19 is connected to the bottom side wall of the outer protective shell 5 of the bottom cooling cylinder 2, and the water outlet pipe 19 is connected to the cooling chamber 7.

[0061] The bottom of the bottom cooling cylinder 2 is provided with a base 20, which is fixedly connected to the outer protective shell 5 of the bottom cooling cylinder 2. A fixing seat A21 is provided in the middle of the upper surface of the base 20, and the inner cylinder 6 of the bottom cooling cylinder 2 is tightly inserted in the fixing seat A21.

[0062] A storage barrel 22 is fixedly arranged in the middle of the inner cavity of the fixing seat A21, a fixing seat B23 is fixedly arranged on the upper part of the storage barrel 22, and a fixing barrel 14 is inserted and arranged in the fixing seat B23;

[0063] The bottom of the storage barrel 22 is provided with a valve 24, and the valve 24 is arranged at the bottom of the base 20;

[0064] The bottom wall of the fixing cylinder 14 is provided with a plurality of evenly distributed through holes, and the fixing cylinder 14 is connected to the storage cylinder 22 through the through holes.

[0065] The inner cylinder 6, cooler 8, fixing cylinder 14, air guide pipe 15, air collecting cylinder 16, air inlet pipe 17, water inlet pipe 18, fixing seat A21, material storage cylinder 22 and fixing seat B23 are all made of pph material.

[0066] The inner cavity side wall of the outer protective shell 5 is longitudinally provided with a plurality of evenly distributed grooves 25, and the outer wall of the inner cylinder 6 is longitudinally provided with a plurality of evenly distributed plug plates 26, the grooves 25 and the plug plates 26 are arranged one by one, and the plug plates 26 are inserted into the grooves 25;

[0067] The outer wall of the insert plate 26 is provided with a plurality of through holes of uniform portions, and the insert plates 26 of the inner cylinder 6 of the bottom cooling cylinder 2, the combined cylinder 3 and the absorption cylinder 4 are arranged in an overlapping manner.

[0068] Flanges 27 are provided at both ends of the outer protective shell 5 , the bottom cooling cylinder 2 , the combined cylinder 3 and the absorption cylinder 4 are connected via the flanges 27 , and the bottom cooling cylinder 2 is fixedly connected to the base 20 via the flanges 27 .

[0069] The upper ends of the inner cylinder 6 of the bottom cooling cylinder 2 and the combined cylinder 3 are provided with an insert ring 28, and the lower ends of the inner cylinder 6 of the combined cylinder 3 and the absorption cylinder 4 are provided with a slot 29;

[0070] The insert ring 28 of the inner cylinder 6 of the bottom cooling cylinder 2 is inserted and sealed with the slot 29 of the inner cylinder 6 of the split cylinder 3;

[0071] The insert ring 28 of the inner cylinder 6 of the split cylinder 3 and the slot 29 of the inner cylinder 6 of the absorption cylinder 4 are inserted and sealed.

[0072] The upper part of the outer protective shell 5 of the absorption cylinder 4 is sealed by a flange 27 and a sealing plate 30;

[0073] The two ends of the inner cylinder 6 of the absorption cylinder 4 are closed, a water injection pipe 31 is provided on the upper part of the inner cylinder 6 of the absorption cylinder 4, and the water injection pipe 31 is arranged outside the absorption cylinder 4. A drainage pipe 32 is provided at the bottom of the side wall of the inner cylinder 6 of the absorption cylinder 4, and the drainage pipe 32 is arranged outside the absorption cylinder 4;

[0074] A one-way air valve 33 is provided at the bottom of the inner cavity of the inner cylinder 6 of the absorption cylinder 4 , and the one-way air valve 33 is connected to the bottom cooling cylinder 2 and the inner cylinder 6 of the combined cylinder 3 .

[0075] The inner cavity of the inner cylinder 6 of the absorption cylinder 4 is provided with a protection tube 34, and the one-way air valve 33 is arranged in the inner cavity of the protection tube 34;

[0076] The upper part of the protection tube 34 is closed, and the upper side wall of the protection tube 34 is connected with a plurality of evenly spaced bronchial tubes 35, and the ends of the bronchial tubes 35 are arranged at the lower part of the inner cavity of the inner cylinder 6 of the absorption cylinder 4;

[0077] The drainage pipe 32, the one-way air valve 33, the protection pipe 34 and the bronchial tube 35 are all made of pph material.

[0078] The water injection pipe 31 is connected to a water channel, and the drainage pipe 32 is provided with a valve switch.

[0079] Working principle of the present invention:

[0080] The water inlet pipe 18 is connected to the two ends of the auxiliary cooling pipe 10 and the two ends of the main cooling pipe 9. The low-temperature ice water enters the main cooling pipe 9 and the auxiliary cooling pipe 10 from the ends of the main cooling pipe 9 and the auxiliary cooling pipe 10 respectively. The low-temperature ice water in the main cooling pipe 9 flows into the auxiliary cooling pipe 10 through the front end of the auxiliary cooling pipe 10, and the low-temperature ice water in the auxiliary cooling pipe 10 flows into the cooling cavity 7, and then is discharged through the water outlet pipe 19;

[0081] The hydrogen fluoride gas is introduced into the air inlet pipe 17, and the hydrogen fluoride gas enters the gas collecting cylinder 16 through the air guide pipe 15, and then enters the inner flow guide pipe 11. Since the hydrogen fluoride gas is lighter than air, the hydrogen fluoride gas is in an ascending state in the inner flow guide pipe 11. During the ascending process, the hydrogen fluoride gas is cooled by the main cooling pipe 9, and part of the hydrogen fluoride gas condenses on the outer wall of the main cooling pipe 9, and then flows into the fixed cylinder 14, and flows into the storage cylinder 22 through the through hole at the bottom of the fixed cylinder 14;

[0082] The remaining hydrogen fluoride gas enters the outer flow guide tube 12 through the vent hole 13 at the upper part of the inner flow guide tube 11. Since the hydrogen fluoride gas is lighter than air, the hydrogen fluoride gas will not settle at the bottom of the outer flow guide tube 12, but will be slowly pushed out from the end of the outer flow guide tube 12 under the push of the hydrogen fluoride gas flow of the air inlet pipe 17, and the hydrogen fluoride gas will be retained in the inner cavity of the outer flow guide tube 12. A large amount of hydrogen fluoride gas will be condensed on the outer wall of the auxiliary cooling tube 10 under the cooling of the auxiliary cooling tube 10, and then will flow into the fixed tube 14, and will flow into the storage tube 22 through the through hole at the bottom of the fixed tube 14;

[0083] The small amount of residual hydrogen fluoride gas floats on the bottom of the absorption cylinder 4. When the predetermined gas pressure is reached, the hydrogen fluoride gas enters the inner cylinder 6 of the absorption cylinder 4 through the one-way gas valve 33. At this time, the water channel connected to the inner cylinder 6 through the water injection pipe 31 is filled with clean water. The hydrogen fluoride gas enters the clean water through the protective pipe 34 and the bronchial pipe 35 and is absorbed by the clean water. When the predetermined concentration is reached, the valve switch of the drain pipe 32 is opened to discharge the solution and refill it with clean water.

[0084] The hydrogen fluoride liquid in the storage barrel 22 is discharged by opening the valve 24. In addition, the low-temperature ice water flowing in the cooling chamber 7 after cooling the hydrogen fluoride gas can be used again to cool the inner cylinder 6, ensuring the low-temperature environment of the inner cylinder 6 and preventing the hydrogen fluoride liquid from being heated and vaporized again.

[0085] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0086] The preferred embodiments of the present invention disclosed above are only used to help illustrate the present invention. The preferred embodiments do not describe all the details in detail, nor do they limit the invention to the specific implementation methods described. Obviously, many modifications and changes can be made according to the content of this specification. This specification selects and specifically describes these embodiments in order to better explain the principles and practical applications of the present invention, so that those skilled in the art can understand and use the present invention well. The present invention is limited only by the claims and their full scope and equivalents.

Claims

1. pph hydrofluoric acid cooling tower heat exchange device, characterized by: The cooling tower comprises a cooling tower body (1), wherein the cooling tower body (1) comprises a bottom cooling cylinder (2), a spliced ​​cylinder (3) and an absorption cylinder (4), wherein the bottom cooling cylinder (2), the spliced ​​cylinder (3) and the absorption cylinder (4) are connected to each other, wherein the bottom cooling cylinder (2), the spliced ​​cylinder (3) and the absorption cylinder (4) are all composed of an outer protective shell (5) and an inner cylinder (6), wherein the inner cylinder (6) is inserted into the inner cavity of the outer protective shell (5), wherein a cooling cavity (7) is provided between the outer protective shell (5) and the inner cylinder (6), and wherein the cooling cavities (7) of the bottom cooling cylinder (2), the spliced ​​cylinder (3) and the absorption cylinder (4) are connected to each other; The split cylinder (3) is spliced ​​and arranged on the upper part of the bottom cooling cylinder (2), and the absorption cylinder (4) is spliced ​​and arranged on the upper part of the split cylinder (3); A cooler (8) is fixedly arranged in the inner cavity of the bottom cooling cylinder (2), and the cooler (8) comprises a main cooling pipe (9), an auxiliary cooling pipe (10), an inner guide pipe (11) and an outer guide pipe (12). A plurality of auxiliary cooling pipes (10) are arranged, and the auxiliary cooling pipes (10) are evenly distributed on the outside of the main cooling pipe (9) along the circumferential direction of the axis of the main cooling pipe (9). The ends of the auxiliary cooling pipes (10) are connected to the ends of the main cooling pipe (9). The inner guide pipe (11) is sleeved on the outside of the main cooling pipe (9), the auxiliary cooling pipe (10) is arranged on the outside of the inner guide pipe (11), and the outer guide pipe (12) is sleeved on the outside of the inner guide pipe (11). The plurality of auxiliary cooling pipes (10) are arranged in the inner cavity of the outer guide pipe (12); The front end of the main cooling pipe (9) is sealed and fixedly arranged with the front ends of the inner flow guide pipe (11) and the outer flow guide pipe (12); the front end outer wall of the inner flow guide pipe (11) is provided with a plurality of evenly distributed vent holes (13); the vent holes (13) are connected to the outer flow guide pipe (12); The main cooling pipe (9), the inner flow guide pipe (11) and the outer flow guide pipe (12) are arranged at the lower part of the absorption cylinder (4), the front end of the auxiliary cooling pipe (10) is arranged in the inner cavity of the absorption cylinder (4), and the front end of the auxiliary cooling pipe (10) is connected to the cooling cavity (7) of the absorption cylinder (4); A fixing tube (14) is fixedly provided at the end of the main cooling tube (9), an air guide tube (15) is fixedly provided in the middle of the inner cavity of the fixing tube (14), and the end of the main cooling tube (9) is fixedly arranged in the air guide tube (15); A gas collecting cylinder (16) is provided at the end of the inner flow guide tube (11), the gas collecting cylinder (16) is a truncated cone-shaped tube structure, and the upper part of the gas guide tube (15) is arranged in the inner cavity of the gas collecting cylinder (16); An air inlet pipe (17) is laterally connected to the side wall of the air guide pipe (15); a water inlet pipe (18) is connected to the end side wall of the main cooling pipe (9); the ends of the air inlet pipe (17) and the water inlet pipe (18) are arranged outside the bottom cooling cylinder (2); a water outlet pipe (19) is connected to the bottom side wall of the outer protective shell (5) of the bottom cooling cylinder (2); and the water outlet pipe (19) is connected to the cooling chamber (7); A base (20) is provided at the bottom of the bottom cooling cylinder (2), the base (20) is fixedly connected to the outer protective shell (5) of the bottom cooling cylinder (2), a fixing seat A (21) is provided in the middle of the upper surface of the base (20), and the inner cylinder (6) of the bottom cooling cylinder (2) is tightly inserted into the fixing seat A (21); A material storage barrel (22) is fixedly arranged in the middle of the inner cavity of the fixing seat A (21), a fixing seat B (23) is fixedly arranged on the upper part of the material storage barrel (22), and the fixing barrel (14) is inserted into the fixing seat B (23); The bottom of the storage barrel (22) is provided with a valve (24), and the valve (24) is arranged at the bottom of the base (20); The bottom wall of the fixed cylinder (14) is provided with a plurality of evenly distributed through holes, and the fixed cylinder (14) is connected to the material storage cylinder (22) through the through holes; The inner cylinder (6), cooler (8), fixed cylinder (14), air guide pipe (15), air collecting cylinder (16), air inlet pipe (17), water inlet pipe (18), fixed seat A (21), material storage cylinder (22) and fixed seat B (23) are all made of PPH material.

2. The pph hydrofluoric acid cooling tower heat exchange device according to claim 1, characterized in that: The inner cavity side wall of the outer protective shell (5) is longitudinally provided with a plurality of evenly distributed grooves (25), and the outer wall of the inner cylinder (6) is longitudinally provided with a plurality of evenly distributed plug plates (26), the grooves (25) and the plug plates (26) are arranged in a one-to-one correspondence, and the plug plates (26) are inserted into the grooves (25); The outer wall of the insert plate (26) is provided with a plurality of evenly spaced through holes, and the insert plates (26) of the inner cylinder (6) of the bottom cooling cylinder (2), the combined cylinder (3) and the absorption cylinder (4) are arranged in an overlapping manner.

3. The pph hydrofluoric acid cooling tower heat exchange device according to claim 1, characterized in that: Flanges (27) are provided at both ends of the outer protective shell (5); the bottom cooling cylinder (2), the combined cylinder (3) and the absorption cylinder (4) are connected via the flanges (27); and the bottom cooling cylinder (2) is fixedly connected to the base (20) via the flanges (27).

4. The pph hydrofluoric acid cooling tower heat exchange device according to claim 1, characterized in that: The upper ends of the inner cylinders (6) of the bottom cooling cylinder (2) and the combined cylinder (3) are provided with insert rings (28), and the lower ends of the inner cylinders (6) of the combined cylinder (3) and the absorption cylinder (4) are provided with slots (29); The insert ring (28) of the inner cylinder (6) of the bottom cooling cylinder (2) is inserted and sealed with the slot (29) of the inner cylinder (6) of the combined cylinder (3); The insert ring (28) of the inner cylinder (6) of the spliced ​​cylinder (3) and the slot (29) of the inner cylinder (6) of the absorption cylinder (4) are inserted and sealed.

5. The pph hydrofluoric acid cooling tower heat exchange device according to claim 3, characterized in that: The upper part of the outer protective shell (5) of the absorption cylinder (4) is sealed by a flange (27) and a sealing plate (30); The two ends of the inner cylinder (6) of the absorption cylinder (4) are closed, a water injection pipe (31) is provided at the upper part of the inner cylinder (6) of the absorption cylinder (4), and the water injection pipe (31) is arranged outside the absorption cylinder (4), and a drainage pipe (32) is provided at the bottom of the side wall of the inner cylinder (6) of the absorption cylinder (4), and the drainage pipe (32) is arranged outside the absorption cylinder (4); A one-way air valve (33) is provided at the bottom of the inner cavity of the inner cylinder (6) of the absorption cylinder (4), and the one-way air valve (33) is connected to the bottom cooling cylinder (2) and the inner cylinder (6) of the combined cylinder (3).

6. The pph hydrofluoric acid cooling tower heat exchange device according to claim 5, characterized in that: The inner cavity of the inner cylinder (6) of the absorption cylinder (4) is provided with a protection tube (34), and the one-way air valve (33) is arranged in the inner cavity of the protection tube (34); The upper part of the protection tube (34) is sealed, and the upper end side wall of the protection tube (34) is connected to a plurality of evenly spaced bronchi (35), and the ends of the bronchi (35) are arranged at the lower part of the inner cavity of the inner cylinder (6) of the absorption cylinder (4); The drainage pipe (32), the one-way air valve (33), the protective pipe (34) and the bronchial tube (35) are all made of PPH material.

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