Condensate water recovery device for anhydrous hydrogen fluoride production

Abstract

The utility model discloses a condensate water recovery device for anhydrous hydrogen fluoride production, and relates to the technical field of condensate water recovery treatment. The device comprises a treatment tank and a rectification reboiler, the bottom of the treatment tank is connected with the rectification reboiler through a conveying pipe, a recovery pipe is installed at the top of the treatment tank and arranged at the eccentric position of the top of the treatment tank, an installation frame is fixedly arranged at the upper end of the interior of the treatment tank, and the recovery pipe is connected with the installation frame. A bottom plate is fixedly arranged at the bottom of the mounting frame, and annularly distributed grooves are formed in the bottom plate in a penetrating manner; recycled condensate water passes through the filter screen and the filter filler in a dispersing manner, the condensate water is dispersed and contacted, and the phenomenon that blockage is easily caused due to the fact that the condensate water is filtered only at a certain position all the time is avoided, so that the service life of the whole filter assembly is prolonged, and meanwhile, due to double filtration of the filter screen and the filter filler, the service life of the filter assembly is prolonged. And the recycled condensate water is fully and effectively filtered.

Description

Technical Field

[0001] The utility model relates to the technical field of condensed water recovery and treatment, in particular to a condensed water recovery device for anhydrous hydrogen fluoride production. Background Art

[0002] Hydrogen fluoride is an important chemical raw material. Common methods for producing hydrogen fluoride include dry and wet processes. The dry method is to react fluorite with sulfuric acid to generate hydrogen fluoride, which is directly condensed and then distilled. The wet method is to react fluorite with sulfuric acid to generate hydrogen fluoride, which is absorbed by water and then distilled. The dry method is commonly used. Regardless of the method, distillation separation must be used, and distillation separation requires steam heating. Steam heating will inevitably produce condensed water, and the amount is very large. How to deal with condensed water has always been a relatively large problem. The condensed water produced by the production of anhydrous hydrogen fluoride is now stored in a storage tank when it is recycled. The heat in the exhaust gas discharged from the heating furnace is then converted and used to heat the condensed water. The heated condensed water is then sent to the distillation reboiler for reuse.

[0003] In the above-mentioned process of recycling and utilizing the condensed water into the distillation reboiler, when the condensed water is generated, the pipes and equipment of the condensed water system may produce metal corrosion products due to corrosion. These products then enter the condensed water and enter the distillation reboiler along with some impurities generated inside, so they need to be filtered. At present, when using the condensed water filtering and impurity removal device, most of them only rely on setting a filter to screen out impurities in the condensed water. Some fine impurities will still pass through with the condensed water. When the condensed water passes through, due to the pipe connection, there will be a pipe discharged into the condensed water. Since the filter below is fixed, the discharged condensed water will only be filtered in one place of the filter. In subsequent use, filtering at only one place will often cause the filter medium at that position to be very easy to be blocked, which will lead to a shorter service life and more frequent replacement and cleaning. Utility Model Content

[0004] In order to solve the above problems, the purpose of the present invention is to provide a condensate recovery device for anhydrous hydrogen fluoride production.

[0005] In order to solve the above technical problems, the present invention adopts the following technical solutions: A condensate recovery device for anhydrous hydrogen fluoride production, comprising a treatment tank and a distillation reboiler, the bottom of the treatment tank being connected to the distillation reboiler through a delivery pipe, a recovery pipe being installed on the top of the treatment tank, the recovery pipe being arranged at an eccentric position on the top of the treatment tank, a mounting frame being fixedly provided at the upper end of the interior of the treatment tank, a bottom plate being fixedly provided at the bottom of the mounting frame, an annularly distributed groove being penetrated through the bottom plate, a baffle being provided above the bottom plate in the mounting frame, a through slot corresponding to the groove being provided on the baffle, a first rotating rod being fixedly provided at the center of the baffle, a fixed frame being provided below the mounting frame in the interior of the treatment tank, a filter screen being fixedly provided at the top of the fixed frame, a second rotating rod being inserted through the first rotating rod, the bottom of the second rotating rod being penetrated through the center of the filter screen and being fixedly connected to the side wall of the fixed frame, and multiple layers of filter fillers being installed below the fixed frame in the treatment tank.

[0006] Preferably, the tops of the first rotating rod and the second rotating rod both pass through the top of the processing tank, and the first rotating rod and the second rotating rod are both fixed with a first gear at one end of the outer wall of the processing tank. A vertically arranged transmission shaft is rotated near the first rotating rod on the upper surface of the processing tank, and a second gear is fixed on the transmission shaft and is respectively meshed with the first rotating rod and the second rotating rod.

[0007] Preferably, a horizontally arranged horizontal plate is fixedly inserted on the processing tank above the fixed frame, a vertically arranged first scraper is fixed on one side of the lower surface of one end of the horizontal plate located inside the processing tank, and a second scraper is slidably provided on the lower surface of the horizontal plate.

[0008] Compared with the prior art, the beneficial effects of the present invention are:

[0009] 1. In the utility model, the recovered condensed water is dispersed through the filter screen and the filter filler, so that the condensed water is dispersed and contacts with each other, avoiding filtration at only one point, which is easy to cause blockage, thereby improving the service life of the entire filter component. At the same time, the double filtration of the filter screen and the filter filler can fully and effectively filter the recycled condensed water;

[0010] 2. The second rotating rod provided in the present invention will drive the filter to rotate, so that the first scraper can clean the impurities, reduce the blockage of the filter, and improve the filtering effect. The handle pulls the blocking block to drive the second scraper to move, so that the second scraper can clean the impurities accumulated at the position of the first scraper and remove them from the processing tank, further increasing the service life of the filter. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0012] Figure 1 It is a schematic diagram of the overall structure of the utility model.

[0013] Figure 2 This is a schematic diagram of the internal structure of the processing tank of the utility model.

[0014] Figure 3 This is a schematic diagram of the installation frame structure of the utility model.

[0015] Figure 4 This is a schematic diagram of the bottom plate and baffle structure of the utility model.

[0016] Figure 5 This is a schematic diagram of the horizontal plate structure of the utility model.

[0017] In the figure: 1. treatment tank; 11. distillation reboiler; 12. delivery pipe; 13. recovery pipe; 14. mounting frame; 15. bottom plate; 16. groove; 17. baffle; 18. through groove; 19. cylinder; 191. block; 2. fixing frame; 21. filter screen; 22. first rotating rod; 23. second rotating rod; 24. first gear; 25. transmission shaft; 26. second gear; 28. driving motor; 3. horizontal plate; 31. first scraper; 32. second scraper; 33. connecting rod; 34. blocking block; 35. handle; 4. filter filler. DETAILED DESCRIPTION

[0018] 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 embodiments described 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 making creative efforts are within the scope of protection of the present invention.

[0019] Example: Figure 1-5As shown, the utility model provides a condensate recovery device for anhydrous hydrogen fluoride production, comprising a treatment tank 1 and a distillation reboiler 11. The bottom of the treatment tank 1 is connected to the distillation reboiler 11 through a delivery pipe 12. A recovery pipe 13 is installed on the top of the treatment tank 1. The recovery pipe 13 is arranged at an eccentric position on the top of the treatment tank 1. A mounting frame 14 is fixedly provided on the upper end of the interior of the treatment tank 1. A bottom plate 15 is fixedly provided on the bottom of the mounting frame 14. An annular groove 16 is formed on the bottom plate 15. The bottom plate 15 is provided with a groove 16 arranged in an annular manner. 15 is provided above a baffle 17, and a through groove 18 corresponding to the groove 16 is provided on the baffle 17. A first rotating rod 22 is fixedly provided at the center of the baffle 17. A fixed frame 2 is provided inside the processing tank 1 below the mounting frame 14, and a filter screen 21 is fixedly provided on the top of the fixed frame 2. A second rotating rod 23 is inserted through the first rotating rod 22, and the bottom of the second rotating rod 23 passes through the center of the filter screen 21 and is fixedly connected to the side wall of the fixed frame 2. A multi-layer filter filler 4 is installed below the fixed frame 2 in the processing tank 1.

[0020] The tops of the first rotating rod 22 and the second rotating rod 23 both pass through the top of the processing tank 1. The first rotating rod 22 and the second rotating rod 23 are both fixed with a first gear 24 at one end of the outer wall of the processing tank 1. A vertical transmission shaft 25 is provided on the upper surface of the processing tank 1 near the first rotating rod 22. A second gear 26 is fixed on the transmission shaft 25 and is respectively meshed with the first rotating rod 22 and the second rotating rod 23. The second gear 26 can drive the first gear 24 meshed with it to rotate, so that the first rotating rod 22 and the second rotating rod 23 can rotate respectively. The first rotating rod 22 can drive the baffle 17 to rotate, so that the through grooves 18 on the baffle 17 correspond to the grooves 16 at different positions to discharge the condensed water in the mounting frame 14. When the condensed water passes through the filter screen 21 and the filter filler 4 at the bottom later, the condensed water The contact is dispersed to avoid filtering in only one place, which is easy to cause blockage and affect the service life; a drive motor 28 is fixedly provided on the top of the transmission shaft 25, and the output end of the drive motor 28 is coaxially fixed on the transmission shaft 25. The set drive motor 28 can provide power for the rotation of the transmission shaft 25, which is convenient for the staff to operate; the first gear 24 located on the first rotating rod 22 and the second gear 26 meshing with the transmission shaft 25 are large and small gears respectively. This setting can make the rotation speed of the first rotating rod 22 greater than the second rotating rod 23, so as to ensure that the fixed frame 2 drives the filter 21 to rotate while the condensed water is discharged through different grooves 16. It can also be filtered at different positions of the filter 21, which can avoid filtering at the same position all the time, causing excessive blockage and affecting the service life of the filter 21.

[0021] A horizontally arranged horizontal plate 3 is fixedly inserted on the processing tank 1 above the fixed frame 2. A vertically arranged first scraper 31 is fixed on one side of the lower surface of the horizontal plate 3 located at one end inside the processing tank 1. A second scraper 32 is slidingly provided on the lower surface of the horizontal plate 3. As the second rotating rod 23 drives the fixed frame 2 and the filter screen 21 to rotate, the first scraper 31 will scrape and intercept the impurities on the filter screen 21. Then the second scraper 32 can move along the horizontal plate 3 to clean the impurities connected to the first scraper 31, thereby improving The service life of the filter screen 21 is extended; a connecting rod 33 is fixedly provided on the side wall of the second scraper 32, and a sealing block 34 is fixedly provided on the end of the connecting rod 33 away from the second scraper 32, and the sealing block 34 can be fully clamped on the treatment tank 1. The blocking block 34 is set to seal the groove opened by the second scraper 32 to avoid leakage of condensed water during treatment; a handle 35 is fixedly provided on the side of the sealing block 34 away from the connecting rod 33, and the handle 35 can facilitate the staff to directly pull the blocking block 34 and the second scraper 32 out of the treatment tank 1 for easy use.

[0022] A cylinder 19 is installed on the top of the processing tank 1. The output end of the cylinder 19 passes through the processing tank 1 and is fixed with a stopper 191 that matches the through groove 18. The set cylinder 19 can push the stopper 191 to be inserted into the through groove 18, so that the condensed water entering the processing tank 1 through the recovery pipe 13 can first fill the upper end of the installation frame 14. Before the baffle 17 is rotated, the stopper 191 can be pulled out of the groove 16, so that the condensed water can be discharged to the bottom through the through groove 18 and the groove 16.

[0023] Working principle: When the condensed water is used after recovery, the condensed water to be used is transported to the processing tank 1 through the recovery pipe 13 and initially accumulated in the installation frame 14. When a certain amount of condensed water is collected, the cylinder 19 pulls the block 191 out of the groove 16. At this time, the condensed water in the installation frame 14 is connected to the through groove 16 and the through groove 18 and then injected into the filter 21. At the same time, the driving motor 28 can drive the transmission shaft 25 to drive the second gear 26 to drive the first gear 24 to rotate. At this time, the first rotating rod 22 and the second rotating rod 23 fixed to the first gear 24 rotate at the same time. The first rotating rod 22 can drive the baffle 17 to rotate, so that the baffle The through grooves 18 on 17 correspond to the grooves 16 at different positions to discharge the condensed water in the mounting frame 14. When the condensed water subsequently passes through the filter screen 21 and the filter filler 4 at the bottom, the condensed water is dispersed and contacts with each other, so as to avoid being filtered at only one point, which is easy to cause blockage and shorten the service life. When the condensed water contacts the filter screen 21 and the multiple groups of filter fillers 4, the filter screen 21 will filter out large particles of impurities, and the filter filler 4 will further effectively filter out the impurities remaining in the condensed water, thereby fully and effectively filtering the recycled condensed water. The condensed water passing through the filter filler 4 will be input into the distillation reboiler 11 through the delivery pipe 12 for recovery reaction.

[0024] When the drive motor 28 is working, the bottom of the second rotating rod 23 will drive the fixed frame 2 to rotate, so that the impurities intercepted on the surface of the filter 21 on the fixed frame 2 will collide with the first scraper 31 as it rotates and be intercepted by the first scraper 31. The impurities will accumulate at the position of the first scraper 31. This operation can reduce the blockage of the filter 21 and improve the filtering effect when the filter 21 is in use. When the processing tank 1 is not in use, the staff can pull the blocking block 34 through the handle 35 to drive the second scraper 32 to move, so that the second scraper 32 can clean the impurities accumulated at the position of the first scraper 31 and remove them from the processing tank 1, further increasing the service life of the filter 21.

[0025] Obviously, those skilled in the art may make various modifications and variations to the present invention without departing from the spirit and scope of the present invention. Thus, if such modifications and variations fall within the scope of the claims of the present invention and their equivalents, the present invention is intended to include such modifications and variations.

Claims

1. A condensate recovery device for anhydrous hydrogen fluoride production, comprising a treatment tank (1) and a distillation reboiler (11), characterized in that: The bottom of the treatment tank (1) is connected to the distillation reboiler (11) through a delivery pipe (12); a recovery pipe (13) is installed on the top of the treatment tank (1); the recovery pipe (13) is arranged at an eccentric position on the top of the treatment tank (1); a mounting frame (14) is fixedly provided on the upper end of the interior of the treatment tank (1); a bottom plate (15) is fixedly provided on the bottom of the mounting frame (14); an annularly distributed groove (16) is provided through the bottom plate (15); a baffle (17) is provided above the bottom plate (15) in the mounting frame (14); and a baffle (17) is provided on the baffle (17). A through groove (18) corresponding to the groove (16), a first rotating rod (22) is fixedly provided at the center of the baffle (17), a fixed frame (2) is provided inside the processing tank (1) below the installation frame (14), a filter screen (21) is fixedly provided on the top of the fixed frame (2), a second rotating rod (23) is inserted through the first rotating rod (22), the bottom of the second rotating rod (23) passes through the center of the filter screen (21) and is fixedly connected to the side wall of the fixed frame (2), and multiple layers of filter fillers (4) are installed below the fixed frame (2) in the processing tank (1).

2. A condensate recovery device for anhydrous hydrogen fluoride production according to claim 1, characterized in that: The tops of the first rotating rod (22) and the second rotating rod (23) both pass through the top of the processing tank (1); the first rotating rod (22) and the second rotating rod (23) are both fixedly provided with a first gear (24) at one end of the outer wall of the processing tank (1); a vertically arranged transmission shaft (25) is rotatably provided on the upper surface of the processing tank (1) near the first rotating rod (22); and a second gear (26) is fixedly provided on the transmission shaft (25) and is respectively meshed with the first rotating rod (22) and the second rotating rod (23).

3. A condensed water recovery device for anhydrous hydrogen fluoride production according to claim 2, characterized in that: A driving motor (28) is fixedly provided on the top of the transmission shaft (25), and an output end of the driving motor (28) is coaxially fixedly provided on the transmission shaft (25).

4. A condensate recovery device for anhydrous hydrogen fluoride production according to claim 2, characterized in that: The first gear (24) on the first rotating rod (22) and the second gear (26) meshed with each other on the transmission shaft (25) are respectively large and small gears.

5. The condensate recovery device for anhydrous hydrogen fluoride production according to claim 1, characterized in that: A horizontally arranged transverse plate (3) is fixedly inserted on the processing tank (1) above the fixed frame (2); a vertically arranged first scraper (31) is fixedly provided on one side of the lower surface of one end of the transverse plate (3) located inside the processing tank (1); and a second scraper (32) is slidably provided on the lower surface of the transverse plate (3).

6. A condensate recovery device for anhydrous hydrogen fluoride production according to claim 5, characterized in that: A connecting rod (33) is fixedly provided on the side wall of the second scraper (32), and a blocking block (34) is fixedly provided on one end of the connecting rod (33) away from the second scraper (32). The blocking block (34) can be fully clamped on the processing tank (1).

7. A condensate recovery device for anhydrous hydrogen fluoride production according to claim 6, characterized in that: A handle (35) is fixedly provided on one side of the blocking block (34) away from the connecting rod (33).

8. The condensate recovery device for anhydrous hydrogen fluoride production according to claim 1, characterized in that: A cylinder (19) is installed on the top of the processing tank (1), and the output end of the cylinder (19) passes through the processing tank (1) and is fixed with a stopper (191) that matches the through groove (18).

Images