CN220513431U - SiC horizontal evaporator for high-concentration sulfuric acid concentration - Google Patents
SiC horizontal evaporator for high-concentration sulfuric acid concentration Download PDFInfo
- Publication number
- CN220513431U CN220513431U CN202321996224.3U CN202321996224U CN220513431U CN 220513431 U CN220513431 U CN 220513431U CN 202321996224 U CN202321996224 U CN 202321996224U CN 220513431 U CN220513431 U CN 220513431U
- Authority
- CN
- China
- Prior art keywords
- tube
- side tube
- shell
- tube sheet
- tube plate
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- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 title claims abstract description 30
- 229910010271 silicon carbide Inorganic materials 0.000 claims abstract description 37
- 238000007789 sealing Methods 0.000 claims abstract description 29
- 239000000463 material Substances 0.000 claims abstract description 16
- 229910052715 tantalum Inorganic materials 0.000 claims abstract description 12
- GUVRBAGPIYLISA-UHFFFAOYSA-N tantalum atom Chemical compound [Ta] GUVRBAGPIYLISA-UHFFFAOYSA-N 0.000 claims abstract description 12
- 230000000712 assembly Effects 0.000 claims description 8
- 238000000429 assembly Methods 0.000 claims description 8
- HBMJWWWQQXIZIP-UHFFFAOYSA-N silicon carbide Chemical compound [Si+]#[C-] HBMJWWWQQXIZIP-UHFFFAOYSA-N 0.000 abstract description 21
- 238000000034 method Methods 0.000 abstract description 4
- 229910000975 Carbon steel Inorganic materials 0.000 description 3
- 239000010962 carbon steel Substances 0.000 description 3
- 230000007797 corrosion Effects 0.000 description 2
- 238000005260 corrosion Methods 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 210000003298 dental enamel Anatomy 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000008020 evaporation Effects 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- -1 polytetrafluoroethylene Polymers 0.000 description 1
- 229920001343 polytetrafluoroethylene Polymers 0.000 description 1
- 239000004810 polytetrafluoroethylene Substances 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
Landscapes
- Vaporization, Distillation, Condensation, Sublimation, And Cold Traps (AREA)
Abstract
The utility model provides a high concentration is SiC horizontal evaporator for sulfuric acid concentration, includes low head, casing, upper head and carborundum pipe, shell side tube sheet includes the tube sheet body, and the tube sheet body surface pastes and is equipped with tantalum material subsides layer, is provided with sealing mechanism between adjacent tube side tube sheet and the shell side tube sheet. The tantalum material pasting layer is pasted on the shell-side tube plate, so that the problem of insufficient temperature resistance of the tetrafluoro shell-side tube plate is solved, and the silicon carbide tube can be applied under the high temperature condition; the sealing mechanism of the utility model enables the tube side tube plate and the shell side tube plate to form a structure of opposite sealing, thereby solving the problem that the tube plate made of the tetrafluoro material cannot be sealed because threads are not easy to process; the shell side tube plate body and the tube side tube plate can be made of the same material, so that the influence on the heat exchange tube caused by different expansion rates of the two tube plates is avoided, and the running stability of the equipment is improved.
Description
Technical Field
The utility model relates to the technical field of sulfuric acid concentration, in particular to a SiC horizontal evaporator for high-concentration sulfuric acid concentration.
Background
In the concentration process of high-concentration sulfuric acid, the evaporation temperature is below 180 ℃ even under extremely high vacuum degree, and the tantalum heat exchanger is commonly used at present, but the tantalum is high in price, so that the production cost is high. SiC heat exchange tubes are also now often used instead of tantalum tubes. Although the heat resistance and corrosion resistance of the SiC heat exchange tube are better than those of the tantalum tube, the shell-side tube plate of the heat exchanger is a tetrafluorotube plate, and is easy to deform at high temperature, so that the sealing effect is influenced, the shape and the use of the SiC heat exchange tube are influenced, and the application of the silicon carbide horizontal evaporator is limited.
Disclosure of Invention
In order to overcome the defects of the technology, the utility model aims to provide the SiC horizontal evaporator for concentrating the high-concentration sulfuric acid.
The technical scheme adopted by the utility model is as follows: the utility model provides a high concentration is SiC horizontal evaporator for sulfuric acid concentration, includes low head, casing, upper head and carborundum pipe, be provided with a tube side tube sheet and a shell side tube sheet between low head and the casing, also be provided with a tube side tube sheet and a shell side tube sheet between upper head and the casing, wear to establish respectively on corresponding tube side tube sheet after wearing to establish through corresponding shell side tube sheet at carborundum pipe's both ends, the shell side tube sheet includes the tube sheet body, and the tube sheet body surface subsides is equipped with tantalum material subsides layer, is provided with sealing mechanism between adjacent tube side tube sheet and the shell side tube sheet.
Further, sealing mechanism includes the stay tube, sets up the holding ring and two symmetry sets up the sealing component at the stay tube both ends in the stay tube outside, the holding tube is established on the carborundum pipe in the pipe cover, and the both ends of stay tube wear to establish respectively on corresponding tube side tube sheet and shell side tube sheet, and the both ends of holding ring support tightly respectively on corresponding tube side tube sheet and shell side tube sheet, sealing component includes the tetrafluoro gasket of three cover on the carborundum pipe, and the axial interval setting is followed to three tetrafluoro gasket along the carborundum pipe, all is provided with a sealing washer between every adjacent two tetrafluoro gasket, the sealing washer is established on the carborundum pipe in the snare, and two sides of sealing washer paste respectively and establish on corresponding tetrafluoro gasket.
Further, a plurality of baffle assemblies are arranged in the shell, and the baffle assemblies are sequentially arranged at intervals along the axial direction of the shell.
Compared with the prior art, the utility model has the following beneficial effects: the SiC horizontal evaporator for concentrating high-concentration sulfuric acid solves the problem of insufficient temperature resistance of a shell-side tube plate made of tetrafluoro material by attaching a tantalum material attaching layer on the shell-side tube plate, so that the silicon carbide tube can be applied under high temperature conditions; the sealing mechanism of the utility model enables the tube side tube plate and the shell side tube plate to form a structure of opposite sealing, thereby solving the problem that the tube plate made of the tetrafluoro material cannot be sealed because threads are not easy to process; the shell side tube plate body and the tube side tube plate can be made of the same material, so that the influence on the heat exchange tube caused by different expansion rates of the two tube plates is avoided, and the running stability of the equipment is improved.
Drawings
FIG. 1 is a schematic diagram of the structure of the present utility model;
FIG. 2 is a schematic structural view of a sealing mechanism;
fig. 3 is a schematic structural view of the seal assembly.
Detailed Description
The utility model will now be described in detail with reference to the drawings and to specific embodiments.
As shown in fig. 1 to 3, the SiC horizontal evaporator for concentrating high-concentration sulfuric acid comprises a lower end enclosure 1, a shell 4, an upper end enclosure 5 and a silicon carbide tube 7, wherein a tube pass tube plate 2 and a shell pass tube plate 3 are arranged between the lower end enclosure 1 and the shell 4, a tube pass tube plate 2 and a shell pass tube plate 3 are also arranged between the upper end enclosure 5 and the shell 4, and two ends of the silicon carbide tube 7 respectively penetrate through the corresponding shell pass tube plates 3 and then penetrate through the corresponding tube pass tube plates 2. The tube side is internally provided with a heating medium, the shell side is internally provided with sulfuric acid, and the silicon carbide tube 7 is internally provided with the heating medium. The shell-side tube plate 3 comprises a tube plate body 31, a tantalum material attaching layer 32 is attached to the surface of the tube plate body 31, and preferably, the tantalum material attaching layer 32 is attached to one side, close to the shell, of the tube plate body and the tube holes of the tube plate body. A sealing mechanism 6 is arranged between the adjacent tube side tube plate 2 and the shell side tube plate 3.
The tube side tube plate 2 is a metal tube plate, and is conventionally a carbon steel tube plate. The lower seal head 1 and the upper seal head 2 are metal seal heads, and are conventionally carbon steel seal heads. The housing 4 is a corrosion resistant housing, conventionally a carbon steel enamel housing.
The sealing mechanism 6 comprises a support tube 62, a support ring 63 arranged on the outer side of the support tube 62 and two sealing assemblies 61 symmetrically arranged at two ends of the support tube 62, the support tube 62 is sleeved on the silicon carbide tube 7, two ends of the support tube 62 are respectively penetrated on the corresponding tube pass tube plate 2 and the shell pass tube plate 3, two ends of the support ring 63 are respectively abutted against the corresponding tube pass tube plate 2 and the shell pass tube plate 3, the sealing assemblies 61 comprise three tetrafluoro gaskets 6101 sleeved on the silicon carbide tube 7, the three tetrafluoro gaskets 6101 are sequentially arranged at intervals along the axial direction of the silicon carbide tube 7, a sealing ring 6102 is arranged between every two adjacent tetrafluoro gaskets 6101, the sealing ring 6102 is sleeved on the silicon carbide tube 7, and two sides of the sealing ring 6102 are respectively attached to the corresponding tetrafluoro gaskets 6101.
A plurality of baffle assemblies 8 are arranged in the shell 4, and the baffle assemblies 8 are sequentially arranged at intervals along the axial direction of the shell 4. By providing the baffle assembly 8, the sulfuric acid stroke is prolonged. The baffle assembly 8 is made of tetrafluoro material.
The tantalum material pasting layer is pasted on the shell-side tube plate, so that the problem of insufficient temperature resistance of the tetrafluoro shell-side tube plate is solved, and the silicon carbide tube can be applied under the high temperature condition.
Through sealing mechanism to make tube side tube sheet and shell side tube sheet form the structure of opposite direction seal, solved and used the polytetrafluoroethylene material tube sheet and can't be sealed because of difficult processing screw thread.
The shell side tube plate body and the tube side tube plate can be made of the same material, so that the influence on the heat exchange tube caused by different expansion rates of the two tube plates is avoided, and the running stability of the equipment is improved.
The above examples give detailed embodiments and specific operation procedures on the premise of the technical solution of the present utility model, but the scope of protection of the present utility model is not limited to the above examples.
Claims (3)
1. The utility model provides a concentrated SiC horizontal evaporator of using of high concentration sulfuric acid, includes low head (1), casing (4), upper head (5) and carborundum pipe (7), be provided with a tube side tube sheet (2) and a shell side tube sheet (3) between low head (1) and casing (4), also be provided with a tube side tube sheet (2) and a shell side tube sheet (3) between upper head (5) and casing (4), wear to establish respectively behind corresponding shell side tube sheet (3) behind carborundum pipe (7) to wear to establish on corresponding tube side tube sheet (2), its characterized in that: the shell-side tube plate (3) comprises a tube plate body (31), a tantalum material attaching layer (32) is attached to the surface of the tube plate body (31), and a sealing mechanism (6) is arranged between the adjacent tube-side tube plate (2) and the shell-side tube plate (3).
2. A SiC level evaporator for concentrating high concentration sulfuric acid as defined in claim 1, wherein: sealing mechanism (6) include stay tube (62), set up backup ring (63) and two symmetry sets up sealing component (61) at stay tube (62) both ends in the stay tube (62) outside, stay tube (62) cover is established on carborundum pipe (7), and the both ends of stay tube (62) are worn to establish respectively on corresponding tube side tube sheet (2) and shell side tube sheet (3), and the both ends of backup ring (63) support tightly respectively on corresponding tube side tube sheet (2) and shell side tube sheet (3), sealing component (61) include that three cover establish tetrafluoro gasket (6101) on carborundum pipe (7), and three tetrafluoro gasket (6101) are along carborundum pipe (7) axial interval setting in proper order, all are provided with a sealing washer (6102) between every adjacent two tetrafluoro gasket (6101), sealing washer (6102) cover is established on carborundum pipe (7), and the both sides of sealing washer (6102) are pasted respectively and are established on corresponding tetrafluoro gasket (6101).
3. A SiC level evaporator for concentrating high concentration sulfuric acid as defined in claim 1, wherein: a plurality of baffle assemblies (8) are arranged in the shell (4), and the baffle assemblies (8) are axially and sequentially arranged at intervals along the shell (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321996224.3U CN220513431U (en) | 2023-07-27 | 2023-07-27 | SiC horizontal evaporator for high-concentration sulfuric acid concentration |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321996224.3U CN220513431U (en) | 2023-07-27 | 2023-07-27 | SiC horizontal evaporator for high-concentration sulfuric acid concentration |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220513431U true CN220513431U (en) | 2024-02-23 |
Family
ID=89932964
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321996224.3U Active CN220513431U (en) | 2023-07-27 | 2023-07-27 | SiC horizontal evaporator for high-concentration sulfuric acid concentration |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220513431U (en) |
-
2023
- 2023-07-27 CN CN202321996224.3U patent/CN220513431U/en active Active
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