Solid caustic soda drying device
By setting out discharge holes and porous support plates on the feed pipe of the solid alkali drying device, the problem of insufficient contact between the material and the solid alkali is solved, the dehydration effect and the service life of the equipment are improved, and production costs and safety risks are reduced.
Patent Information
- Application Number
- CN202510483090.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-04-17
- Publication Date
- 2025-06-06
AI Technical Summary
In existing solid alkali dryers, the material contact with the solid alkali is insufficient, resulting in poor dehydration effect, alkali liquid easily accumulates and causes blockage, and solid alkali is easily crystallized and blocked, with poor water removal effect, and there is a safety hazard.
A solid alkali drying device is designed. By setting a closed end at the lower end of the feed pipe and opening a plurality of discharge holes therein, the material is fully in contact with the solid alkali filler through the discharge hole; at the same time, the alkali liquid produced by water absorption is collected by using a porous support plate to avoid accumulation.
It improves the dehydration effect of materials, reduces the risk of alkali accumulation and blockage, extends the service cycle of equipment, and reduces production costs and labor waste.
Smart Images
Figure CN120101426A_ABST
Abstract
Description
Technical Field
[0001] The invention relates to the technical field of chemical equipment, and in particular to a solid alkali drying device. Background Art
[0002] In the production process of chemicals such as chemicals and pharmaceuticals, dehydration and drying of raw materials and products is a necessary process, and solid alkali dryers or solid alkali dehydrators are often used. For example, in most PVC structures, when the vinyl chloride gas passes through the rod alkali bed of the solid alkali dryer, there is a problem of insufficient contact between the vinyl chloride gas and the rod alkali. At the same time, when the water in the vinyl chloride contacts the rod alkali, the strong water absorption of the rod alkali absorbs the water in the vinyl chloride. The water absorbed around the rod alkali is increasing, so that alkali liquid is formed on the surface of the rod alkali. The generated alkali liquid moves downward to the bottom of the tank by gravity, which causes a large amount of alkali liquid to accumulate at the bottom of the tank, which is very likely to cause pipeline blockage. After the pipeline is blocked, the tank must be emptied, and a large amount of rod alkali and manpower are wasted due to the emptied tank. In addition, in the solid alkali dryer, the hot water jacket at the bottom directly heats the tank, which aggravates the corrosion of the tank by the alkali and shortens the service life of the equipment. In addition, the solid alkali currently used is mostly large pieces of caustic soda. After absorbing water, the solid alkali is prone to crystallization in winter, causing blockage. The water removal effect is poor, and it is difficult to clean when blocked. It is very dangerous and prone to safety accidents.
[0003] Therefore, there is an urgent need for a solid caustic soda drying device to overcome one or more of the above-mentioned defects. Summary of the invention
[0004] The object of the present invention is to provide a solid alkali drying device to solve the problem of insufficient contact between materials and solid alkali.
[0005] To achieve the above-mentioned purpose, the solid alkali drying device of the present invention includes a feed pipe, a barrel and a collector located below the barrel, and the collector is connected to the barrel in a sealed assembly and communicated with each other. The feed pipe is inserted into the upper end wall of the barrel in a sealed manner, and the feed pipe is also fixedly connected to the barrel. The lower end of the feed pipe is extended in the direction close to the collector, and the lower end of the feed pipe is a closed end. The feed pipe is located in the barrel and is provided with a plurality of discharge holes arranged apart from each other; the internal space of the barrel is filled with solid alkali filler, and a discharge pipe communicating with the internal space of the barrel is provided on the side wall of the barrel, and a porous support plate is provided on the barrel and is placed horizontally in the internal space of the barrel, and the porous support plate is located below both the feed pipe and the discharge pipe, and the porous support plate also supports the solid alkali filler from below.
[0006] Compared with the prior art, with the help of the design that "the lower end of the feed pipe is a closed end, and the position of the feed pipe in the barrel is provided with a plurality of discharge holes arranged and spaced from each other", and in combination with the design that "the feed pipe is inserted into the upper end wall of the barrel and the side wall of the barrel is provided with a discharge pipe connected with the internal space of the barrel", the material entering through the feed pipe flows out through the plurality of discharge holes, thereby fully contacting with the solid alkali filler in the barrel, thereby improving the ability to remove moisture from the material and achieving a good dehydration effect; with the help of "a porous support plate is provided on the barrel, which is horizontally placed in the internal space of the barrel and is located below the feed pipe and the discharge pipe", the alkali liquid generated by the solid alkali filler due to water absorption passes through the porous support plate and is collected and processed at the collector.
[0007] Preferably, the discharge holes are respectively located on the closed end and the side wall of the feed pipe, and the discharge holes on the side wall of the feed pipe are evenly spaced and arranged in a circumferential direction.
[0008] Preferably, the diameter of the discharge hole ranges from 1 mm to 4 mm.
[0009] Preferably, the opening rate of the discharge hole is 0.5%-10%.
[0010] Preferably, the lower end of the feed pipe is also separated from the porous support plate by a preset distance, and the solid alkali filler surrounds the feed pipe from below and all around.
[0011] Preferably, the feed pipe is located at the center of the upper end wall of the barrel.
[0012] Preferably, a feed valve is provided on the feed pipe.
[0013] Preferably, the discharge pipe is adjacent to the upper end wall of the barrel.
[0014] Preferably, a discharge valve is provided on the discharge pipe.
[0015] Preferably, the solid caustic soda filler comprises hollow balls and caustic soda flakes filled in the hollow balls.
[0016] Preferably, the hollow spheres are suspended filler hollow spheres, and the caustic soda flakes are flaky sodium hydroxide or flaky potassium hydroxide.
[0017] Preferably, a discharge pipe is provided on the bottom of the collector, and an electric heating insulation belt is wound around the discharge pipe.
[0018] Preferably, the discharge pipe is also provided with a discharge valve.
[0019] Preferably, the barrel includes a barrel body with open upper and lower ends, an upper flange fixed to the upper end of the barrel body, a lower flange fixed to the lower end of the barrel body, and a flange cover sealed to the upper flange; the flange cover forms the upper end wall of the barrel, the discharge pipe is located on the barrel body, the porous support plate is fixedly connected to the lower flange, the top of the collector is provided with a matching flange located directly below the lower flange, a sealing ring is provided between the matching flange and the lower flange, and the sealing ring is clamped between the matching flange and the lower flange.
[0020] Preferably, the solid caustic soda drying device of the present invention further comprises a fastener, wherein the fastener is inserted into both the lower flange and the matching flange, and the fastener also fixes the lower flange and the matching flange together. BRIEF DESCRIPTION OF THE DRAWINGS
[0021] Figure 1 It is a plan view of the solid alkali drying device of the present invention.
[0022] Figure 2 yes Figure 1 A plan view of the feed pipe in the solid alkali drying device is shown.
[0023] Figure 3 It is a plan view of the feed pipe in the solid alkali drying device of the present invention viewed from bottom to top.
[0024] Figure 4 yes Figure 1 Plan view after the feed tube is hidden.
[0025] Figure 5 It is a plan view of the solid alkali filler in the solid alkali drying device of the present invention.
[0026] Figure 6 It is a plan view of the porous support plate in the solid alkali drying device of the present invention. DETAILED DESCRIPTION
[0027] In order to explain the technical content and structural features of the present invention in detail, further description will be given below in combination with the implementation modes and the accompanying drawings.
[0028] See also Figure 1 The solid alkali drying device 100 of the present invention is used to remove moisture from materials (such as but not limited to vinyl chloride) to achieve the purpose of drying the materials, thereby meeting the subsequent process requirements of the materials.
[0029] Recombination Figure 2 and Figure 4The solid alkali drying device 100 of the present invention includes a feed pipe 10, a barrel 20 and a collector 30 located below the barrel 20. The collector 30 is sealed and assembled with the barrel 20 to prevent the material from leaking from the matching connection between the collector 30 and the barrel 20. The collector 30 is also interconnected with the barrel 20 to meet the need for the alkali solution to gather (accumulate or converge) into the collector 30.
[0030] The feed pipe 10 is inserted into the upper end wall of the barrel 20 (as indicated by the label 20d) in a sealing manner to prevent the material in the barrel 20 from leaking from the fitting connection between the feed pipe 10 and the upper end wall of the barrel 20; the feed pipe 10 is also fixedly connected to the barrel 20, and the barrel 20 provides support for the feed pipe 10; the lower end 11 of the feed pipe 10 is extended in the direction close to the collector 30, and the lower end 11 of the feed pipe 10 is a closed end. The feed pipe 10 is located in the barrel 20 and is provided with a plurality of discharge holes 12 spaced apart from each other, so that all the discharge holes 12 are located in the barrel 20; optionally, as an example, the discharge hole 12 is a circular hole to facilitate the manufacturing and processing of the discharge hole 12 on the feed pipe 10. Obviously, according to actual needs, the shape of the discharge hole 12 can also be an elliptical hole, a regular polygonal hole or a hole of other shapes known in the art.
[0031] At the same time, the internal space 22 of the barrel 20 is filled with a solid alkali filler 40 to meet the need of the solid alkali filler 40 to remove moisture from the material flowing out of the discharge hole 12; a discharge pipe 50 connected to the internal space 22 of the barrel 20 is provided on the side wall 23 of the barrel 20 to meet the need of the material removed by the solid alkali filler 40 to be discharged from the barrel 20; a porous support plate 60 is provided on the barrel 20 which is horizontally placed in the internal space 22 of the barrel 20, and the porous support plate 60 is located below both the feed pipe 10 and the discharge pipe 50. The porous support plate 60 also supports the solid alkali filler 40 from below, so that with the help of the porous support plate 60, on the one hand, the porous support plate 60 blocks the solid alkali filler 40 in the barrel 20 from entering the collector 30, and on the other hand, the alkali liquid generated by the solid alkali filler 40 in the barrel 20 due to the removal of moisture from the material can be gathered in the collector 30 through the through holes 61 provided on the porous support plate 60. Specifically, Figure 1 As an example, the lower end 11 of the feed pipe 10 is also separated from the porous support plate 60 by a preset distance, and the solid alkali filler 40 surrounds the feed pipe 10 from below and all around (see Figure 1 As shown), the solid alkali filler 40 is required to remove moisture from the material flowing out of the discharge hole 12 from below and around. It should be noted that since the preset distance is flexibly selected by technicians in this field according to actual needs, it will not be described in detail here. More specifically, as follows:
[0032] like Figure 1 to Figure 2As shown, as an example, the discharge holes 12 are respectively located at the closed end (i.e., the lower end 11) and the side wall 13 of the feed pipe 10 to meet the need for the material to enter the solid alkali filler 40 from the bottom and side of the feed pipe 10. Figure 3 As an example, the discharge holes 12 on the side wall 13 of the feed pipe 10 are evenly spaced and arranged in the circumferential direction, so that the material entering the feed pipe 10 can evenly enter the solid alkali filler 40 after passing through the discharge holes 12. In addition, the aperture of the discharge hole 12 ranges from 1 mm to 4 mm, for example, the aperture of the discharge hole 12 is 1 mm, 2 mm, 3 mm or 4 mm, and the opening rate of the discharge hole 12 is 0.5%-10%, which is the sum of the areas of all the discharge holes 12 divided by the sum of the side area and the lower end area of the feed pipe 10. Specifically, at Figure 1 As an example, the feed pipe 10 is located at the center of the upper end wall of the barrel 20, so that the feed pipe 10 is in the exact center of the barrel 20, so the layout of the solid alkali drying device 100 of the present invention is more compact and more reasonable; in addition, a feed valve 14 is provided on the feed pipe 20 to control the conveying operation of the material to the feed pipe 20.
[0033] like Figure 1 and Figure 4 As shown, as an example, the discharge pipe 50 is adjacent to the upper end wall of the barrel 20 to further improve the ability of the solid alkali filler 40 to remove moisture from the material; in addition, a discharge valve 51 is provided on the discharge pipe 50 to control the need for the material dehydrated by the solid alkali filler 40 to be discharged from the barrel 20. In addition, in combination with Figure 5 As an example, the solid alkali filler 40 includes hollow balls 41 and flake alkali 42 filled in the hollow balls 41. On the one hand, the contact between the material and the solid alkali filler 40 is more complete, and on the other hand, the gap between the hollow balls 41 of adjacent solid alkali fillers 40 is large and the resistance is small, and the loading of the flake alkali 42 into the hollow balls 41 is fast and labor-saving; optionally, as an example, the hollow balls 41 are suspended filler hollow balls, such as suspended filler hollow balls of polypropylene, and the flake alkali 42 is flake sodium hydroxide or flake potassium hydroxide, so as to have a stronger strong water absorption effect and more effectively improve the ability to remove moisture from the material.
[0034] like Figure 1 and Figure 4 As shown, a discharge pipe 31 is provided at the bottom of the collector 30, and an electric heating insulation tape 32 is wound around the discharge pipe 31. With the help of the electric heating insulation tape 32, the alkali solution in the collector 30 can be prevented from freezing in winter, thereby solving the problem of "frequent blockage of the bottom pipeline due to the accumulation of alkali solution at the bottom of the solid alkali dryer, and the waste of alkali rods after tank overhaul and the easy corrosion of equipment", thereby ensuring stable production operation. Figure 1 and Figure 3As an example, a discharge valve 33 is further provided on the discharge pipe 31 to control the need for the alkali solution accumulated in the collector 30 to be discharged outward.
[0035] like Figure 1 and Figure 4 As shown, as an example, the barrel includes a barrel 20a with upper and lower ends open, an upper flange 20b fixed to the upper end of the barrel 20a, a lower flange 20c fixed to the lower end of the barrel 20a, and a flange cover 20d sealed and connected to the upper flange 20b. The flange cover 20d forms the upper end wall of the barrel 20, and the discharge pipe 50 is located on the barrel 20a. The porous support plate 60 is fixedly connected to the lower flange 20c, for example, the porous support plate 60 is welded to the lower flange 20c. Obviously, according to actual needs, the porous support plate 60 and the lower flange 20c can also be fixedly connected in other ways. In addition, the top of the collector 30 is provided with a matching flange 34 located directly below the lower flange 20c, and a sealing ring 70 is provided between the matching flange 34 and the lower flange 20c, and the sealing ring 70 is clamped between the matching flange 34 and the lower flange 20c; therefore, with the help of the matching flange 34 and the lower flange 20c, the convenience of assembly and disassembly and the sealing reliability between the collector 30 and the barrel 20 are effectively improved; with the help of the upper flange 20b and the flange cover 20d, the assembly and disassembly operation of the solid alkali filler 40 in the barrel 20 is more convenient. Specifically, Figure 1 and Figure 4 As an example, the solid caustic soda drying device 100 of the present invention further includes a fastener 80, which is inserted into both the lower flange 20c and the matching flange 34. The fastener 80 also fixes the lower flange 20c and the matching flange 34 together to further improve the convenience of assembly and disassembly between the collector 30 and the barrel 20; optionally, Figure 1 and Figure 4 As an example, the fastener 80 is a combination of a bolt and a nut. Obviously, according to actual needs, the fastener 80 can also be other structures. Figure 1 and Figure 4 Limits shown.
[0036] In summary, the solid alkali drying device 100 of the present invention solves the problems of easy clogging, poor dehydration effect and difficulty in filling and replacing the solid alkali filler 40 of the traditional solid alkali dehydration device, which not only reduces the labor intensity of maintenance, but also saves resources, reduces production costs and improves work efficiency.
[0037] In addition, in conjunction with the accompanying drawings, the working principle of the solid alkali drying device 100 of the present invention is described:
[0038] During operation, the external material enters from the feed pipe 10 and flows out from the discharge hole 12. In the process of passing through the solid alkali filler 40, the material contacts with the caustic soda flakes 42 in the solid alkali filler 40, and the moisture in the material is removed by the strong water absorption of the caustic soda flakes 42; the moisture forms alkali liquid with the caustic soda flakes 42 and gathers in the collector 30; the gathered alkali liquid is then discharged from the discharge pipe 31; and the dehydrated qualified material is discharged from the discharge pipe 50 and enters the next process. Among them, the solid alkali drying device 100 of the present invention can be operated continuously or intermittently.
[0039] Compared with the prior art, by virtue of the design that "the lower end 11 of the feed pipe 10 is a closed end, and a plurality of discharge holes 12 arranged and spaced apart from each other are provided at the position of the feed pipe 10 in the barrel 20", and in combination with the design that "the feed pipe 10 is inserted into the upper end wall of the barrel 20 and a discharge pipe 50 connected to the internal space 22 of the barrel 20 is provided on the side wall 23 of the barrel 20", the material entering through the feed pipe 10 flows out through the plurality of discharge holes 12, thereby fully contacting with the solid alkali filler 40 in the barrel 20, thereby improving the ability to remove moisture from the material and achieving a good dehydration effect; by virtue of the design that "the barrel 20 is provided with a porous support plate 60 which is horizontally placed in the internal space 22 of the barrel 20 and is located below both the feed pipe 10 and the discharge pipe 50", the alkali liquid generated by the solid alkali filler 40 due to water absorption passes through the porous support plate 60 and is collected and processed at the collector 30.
[0040] It is worth noting that, since the solid alkali drying device 100 of the present invention is in a corrosive working environment, the material of the solid alkali drying device 100 can be selected from stainless steel but is not limited thereto. In addition, the volume of the collector 30 can be 10%-30% of the volume of the barrel 20. Optionally, the collector 30 is funnel-shaped to facilitate the discharge of the alkali solution from the discharge pipe 31. Obviously, according to actual needs, the collector 30 can also be in other shapes, so it is not limited to the above. Figure 1 and Figure 4 In addition, the flange cover 20d and the upper flange 20b may be sealed by a sealing gasket 91 and locked together by a locking member 92, and the locking member 92 may be a combination of a bolt and a nut. Obviously, according to actual needs, the locking member 92 may also be a locking buckle. Figure 1 and Figure 4 Limits shown.
[0041] The above disclosure is only a preferred embodiment of the present invention, which cannot be used to limit the scope of the present invention. Therefore, equivalent changes made according to the claims of the present invention are all within the scope of the present invention.
Claims
1. A solid alkali drying device, comprising a feed pipe, a barrel and a collector located below the barrel, wherein the collector and the barrel are sealed and connected to each other, the feed pipe is sealed and inserted into the upper end wall of the barrel, the feed pipe is also fixedly connected to the barrel, the lower end of the feed pipe is extended in a direction close to the collector, and the internal space of the barrel is filled with solid alkali filler, characterized in that: The lower end of the feed pipe is a closed end, and the feed pipe is located in the barrel and is provided with a plurality of discharge holes arranged apart from each other. The side wall of the barrel is provided with a discharge pipe connected to the internal space of the barrel, and the barrel is provided with a porous support plate horizontally placed in the internal space of the barrel. The porous support plate is located below both the feed pipe and the discharge pipe, and the porous support plate also supports the solid alkali filler from below.
2. The solid caustic soda drying device according to claim 1, characterized in that: The discharge holes are respectively located at the closed end and the side wall of the feed pipe. The discharge holes on the side wall of the feed pipe are evenly spaced and arranged in the circumferential direction. The aperture of the discharge holes ranges from 1 mm to 4 mm.
3. The solid caustic soda drying device according to claim 2, characterized in that: The opening rate of the discharge hole is 0.5%-10%.
4. The solid caustic soda drying device according to claim 1, characterized in that: The lower end of the feed pipe is also separated from the porous support plate by a preset distance, and the solid alkali filler surrounds the feed pipe from below and all around.
5. The solid caustic soda drying device according to claim 1, characterized in that: The feed pipe is located at the center of the upper end wall of the barrel, and a feed valve is provided on the feed pipe. The discharge pipe is adjacent to the upper end wall of the barrel, and a discharge valve is provided on the discharge pipe.
6. The solid caustic soda drying device according to claim 1, characterized in that: The solid caustic soda filler comprises hollow balls and caustic soda flakes filled in the hollow balls.
7. The solid caustic soda drying device according to claim 6, characterized in that: The hollow balls are suspended filler hollow balls, and the caustic soda flakes are flaky sodium hydroxide or flaky potassium hydroxide.
8. The solid caustic soda drying device according to claim 1, characterized in that: A discharge pipe is arranged on the bottom of the collector, an electric heating insulation belt is wound around the discharge pipe, and a discharge valve is also arranged on the discharge pipe.
9. The solid caustic soda drying device according to claim 1, characterized in that: The barrel comprises a barrel body with open upper and lower ends, an upper flange fixed to the upper end of the barrel body, a lower flange fixed to the lower end of the barrel body, and a flange cover sealed with the upper flange; the flange cover forms the upper end wall of the barrel, the discharge pipe is located on the barrel body, the porous support plate is fixedly connected to the lower flange, a matching flange is provided on the top of the collector and is located directly below the lower flange, a sealing ring is provided between the matching flange and the lower flange, and the sealing ring is clamped between the matching flange and the lower flange.
10. The solid caustic soda drying device according to claim 9, characterized in that: The invention also comprises a fastener, which is inserted into both the lower flange and the mating flange and fixes the lower flange and the mating flange together.