CN220780249U - Molten salt discharging system in oxidation process - Google Patents
Molten salt discharging system in oxidation process Download PDFInfo
- Publication number
- CN220780249U CN220780249U CN202322618806.4U CN202322618806U CN220780249U CN 220780249 U CN220780249 U CN 220780249U CN 202322618806 U CN202322618806 U CN 202322618806U CN 220780249 U CN220780249 U CN 220780249U
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- China
- Prior art keywords
- molten salt
- discharging
- pipe
- oxidation process
- discharge pipe
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- 150000003839 salts Chemical class 0.000 title claims abstract description 83
- 238000007599 discharging Methods 0.000 title claims abstract description 48
- 238000000034 method Methods 0.000 title claims abstract description 14
- 230000003647 oxidation Effects 0.000 title claims abstract description 14
- 238000007254 oxidation reaction Methods 0.000 title claims abstract description 14
- 238000010438 heat treatment Methods 0.000 claims abstract description 17
- 229910052751 metal Inorganic materials 0.000 claims description 3
- 239000002184 metal Substances 0.000 claims description 3
- 238000010926 purge Methods 0.000 claims description 3
- 230000000694 effects Effects 0.000 abstract description 6
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 description 6
- LELOWRISYMNNSU-UHFFFAOYSA-N hydrogen cyanide Chemical compound N#C LELOWRISYMNNSU-UHFFFAOYSA-N 0.000 description 4
- 238000002844 melting Methods 0.000 description 3
- 230000008018 melting Effects 0.000 description 3
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 description 2
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 2
- 238000009825 accumulation Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- 238000006467 substitution reaction Methods 0.000 description 2
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 1
- 229910002651 NO3 Inorganic materials 0.000 description 1
- NHNBFGGVMKEFGY-UHFFFAOYSA-N Nitrate Chemical compound [O-][N+]([O-])=O NHNBFGGVMKEFGY-UHFFFAOYSA-N 0.000 description 1
- IOVCWXUNBOPUCH-UHFFFAOYSA-M Nitrite anion Chemical compound [O-]N=O IOVCWXUNBOPUCH-UHFFFAOYSA-M 0.000 description 1
- 229910021529 ammonia Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000006227 byproduct Substances 0.000 description 1
- 229910002092 carbon dioxide Inorganic materials 0.000 description 1
- 239000001569 carbon dioxide Substances 0.000 description 1
- 229910002091 carbon monoxide Inorganic materials 0.000 description 1
- 239000003054 catalyst Substances 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Abstract
The utility model provides a molten salt discharging system in an oxidation process, which comprises a molten salt cooler, a discharging valve and a molten salt tank; the bottom of the molten salt cooler is provided with a discharge pipe, and the top of the molten salt tank is provided with a feed pipe; the discharging pipe is connected with the inlet of the clean discharging valve, and the outlet of the clean discharging valve is connected with the feeding pipe; the heating device is sleeved outside the discharge pipe. The molten salt discharging system has the advantages of reasonable design and strong practicability; by using the system, the effect of rapid and efficient unloading can be achieved on the premise of safe operation of the system.
Description
Technical Field
The utility model relates to the technical field of oxidation process equipment, in particular to a molten salt discharging system in an oxidation process.
Background
In the production of hydrocyanic acid by using oxidation process, methanol, ammonia and air are used as raw materials, and in the presence of catalyst in a fixed bed reactor, the methanol ammoxidation reaction is carried out at 450-460 deg.C to obtain hydrocyanic acid and by-products of carbon monoxide, carbon dioxide and water vapor.
In the oxidation process, when the molten salt is used, nitrite contained in the molten salt is easily oxidized into nitrate, so that the melting point of the molten salt is increased, if steam accompanying heat cannot melt the molten salt, the root of a clean valve of the molten salt is easily solidified, and when the molten salt is stopped and put, the phenomenon that the valve is not opened easily occurs, so that the molten salt is solidified in a system, and equipment faults are caused.
Disclosure of Invention
In view of the above, the utility model provides a molten salt discharging system in an oxidation process, in particular to a molten salt discharging system which is provided with a molten salt cooler, a discharging valve and a molten salt tank, and a heating device is arranged on a discharging pipe of the molten salt cooler. The molten salt discharging system has the advantages of reasonable design and strong practicability; by using the system, the effect of rapid and efficient unloading can be achieved on the premise of safe operation of the system.
On the basis of the prior art, the utility model provides a molten salt discharging system in an oxidation process, which comprises a molten salt cooler, a discharging valve and a molten salt tank;
the bottom of the molten salt cooler is provided with a discharge pipe, and the top of the molten salt tank is provided with a feed pipe;
the discharging pipe is connected with the inlet of the clean discharging valve, and the outlet of the clean discharging valve is connected with the feeding pipe;
a heating device is sleeved outside the discharge pipe; the heating device can heat the molten salt solidified in the section, so that the problem that the clean valve cannot work when stopping discharging the molten salt is avoided, the molten salt is smoothly discharged into the molten salt tank, and the normal operation of equipment is ensured.
Preferably, in order to further avoid the influence on the discharging efficiency caused by excessive accumulation of molten salt on the inner wall of the discharging pipe, an evacuating needle is arranged in the discharging pipe; when molten salt solidifies, the evacuation needle can avoid the molten salt to be piled up too tightly, and when heating device heats molten salt solid, the evacuation needle can play the heat conduction effect, improves the melting rate of molten salt, and then improves the discharge rate.
Preferably, the evacuation needles are staggered along the axial direction of the discharge pipe; not only can the evacuation and heat transfer effects be achieved, but also the obstruction to the flow of the molten salt can be avoided, and the discharging rate is further improved.
Preferably, the evacuation needle is a metal needle, and has heat transfer performance.
Preferably, the vibration knocking device is arranged outside the discharge pipe, after the heating device heats, the crack between the evacuation needle and the molten salt can be enlarged by the action of the vibration knocking device, and the molten salt can be smoothly discharged.
Preferably, the heating device is one of a heat exchanger and an electric heater.
Preferably, the electric heater is an electric tracing band and is wound outside the discharge pipe.
Compared with the prior art, the molten salt discharging device has the beneficial effects that by arranging the heating device, molten salt can be prevented from being solidified in the system during discharging, the efficiency of discharging the molten salt is greatly improved, and the safety during discharging the molten salt is ensured. The system has the advantages of reasonable design and strong practicability; by using the system, the effect of rapid and efficient unloading can be achieved on the premise of safe operation of the system.
Drawings
In order to more clearly illustrate the embodiments of the present utility model or the technical solutions in the prior art, the drawings that are required to be used in the description of the embodiments or the prior art will be briefly described below, and it will be obvious to those skilled in the art that other drawings can be obtained from these drawings without inventive effort.
FIG. 1 is a schematic diagram of the molten salt purge system of the present utility model.
Fig. 2 is a schematic structural view of the discharge tube.
In the figure, a 1-molten salt cooler, a 2-purge valve, a 3-molten salt tank, a 4-discharge pipe, a 5-feed pipe, a 6-heating device, a 7-evacuation needle and an 8-vibration knocker.
Detailed Description
In order to make the technical solution of the present utility model better understood by those skilled in the art, the technical solution of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model, and it is apparent that the described embodiments are only some embodiments of the present utility model, not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the present utility model without making any inventive effort, shall fall within the scope of the present utility model.
The utility model provides a molten salt discharging system in an oxidation process, which comprises a molten salt cooler 1, a discharging valve 2 and a molten salt tank 3, wherein the molten salt discharging valve is connected with the molten salt cooler;
the bottom of the molten salt cooler 1 is provided with a discharge pipe 4, and the top of the molten salt tank 3 is provided with a feed pipe 5;
the discharging pipe 4 is connected with the inlet of the discharging valve 2, and the outlet of the discharging valve 2 is connected with the feeding pipe 5;
a heating device 6 is sleeved outside the discharge pipe 4; the heating device 6 can heat the molten salt solidified in the section, so that the problem that the discharging valve 2 cannot work when the molten salt is stopped to discharge the molten salt is avoided, the molten salt is smoothly discharged into the molten salt tank 3, and the normal operation of equipment is ensured;
the heating device 6 is one of a heat exchanger and an electric heater, and in the embodiment, the electric heater is an electric tracing band and is wound outside the discharge pipe 4;
in order to further avoid the influence on the discharging efficiency caused by excessive accumulation of molten salt on the inner wall of the discharging pipe 4, an evacuating needle 7 is arranged in the discharging pipe 4; when molten salt is solidified, the evacuation needle 7 can prevent the molten salt from being excessively compactly piled up, and when the heating device 6 heats molten salt solids, the evacuation needle 7 can play a role in heat conduction, so that the melting rate of the molten salt is improved, and the discharging rate is further improved;
the evacuation needles 7 are staggered along the axial direction of the discharge pipe 4; not only can the evacuation and heat transfer effects be achieved, but also the obstruction to the flow of the molten salt in a molten state can be avoided, and the discharging rate is further improved;
the evacuating needle 7 is a metal needle and has heat transfer performance;
in this embodiment, the length of the evacuation needle 7 is greater than the radius of the discharge tube 4 and less than the diameter of the discharge tube 4;
the vibration knocking device 8 is arranged outside the discharge pipe 4, and after the heating device 6 heats, the crack between the evacuation needle 7 and molten salt can be enlarged by the action of the vibration knocking device 8, so that the molten salt can be smoothly discharged;
when molten salt is discharged, firstly, a heating device 6 outside the discharge pipe 4 is opened to melt the molten salt in the discharge pipe 4, then, a molten salt discharging valve 2 is opened, and the molten salt in the molten salt system is discharged into the bottom molten salt tank 3.
The present utility model has been described in detail above. The "upper", "lower", "left" and "right" in this embodiment are described with respect to the positions in the drawings of the specification. Although the present utility model has been described in detail by way of preferred embodiments with reference to the accompanying drawings, the present utility model is not limited thereto. Various equivalent modifications and substitutions may be made in the embodiments of the present utility model by those skilled in the art without departing from the spirit and scope of the present utility model, and it is intended that all such modifications and substitutions be within the scope of the present utility model/be within the scope of the present utility model as defined by the appended claims. Therefore, the protection scope of the present utility model shall be subject to the protection scope of the claims.
Claims (7)
1. The molten salt discharging system in the oxidation process is characterized by comprising a molten salt cooler, a discharging valve and a molten salt tank;
the bottom of the molten salt cooler is provided with a discharge pipe, and the top of the molten salt tank is provided with a feed pipe;
the discharging pipe is connected with the inlet of the clean discharging valve, and the outlet of the clean discharging valve is connected with the feeding pipe;
the heating device is sleeved outside the discharge pipe.
2. The molten salt removal system of claim 1, wherein an evacuation needle is disposed within the discharge tube.
3. The molten salt removal system of claim 2, wherein the evacuation needles are staggered in the axial direction of the discharge tube.
4. A molten salt purge system in an oxidation process according to claim 3, wherein the evacuation needles are metal needles.
5. The molten salt removal system of claim 1, wherein a vibrating impactor is disposed outside the discharge tube.
6. The molten salt discharging system in an oxidation process according to claim 1, wherein the heating device is one of a heat exchanger and an electric heater.
7. The molten salt discharging system in an oxidation process according to claim 6, wherein the electric heater is an electric tracing band wound outside the discharge pipe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322618806.4U CN220780249U (en) | 2023-09-26 | 2023-09-26 | Molten salt discharging system in oxidation process |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322618806.4U CN220780249U (en) | 2023-09-26 | 2023-09-26 | Molten salt discharging system in oxidation process |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220780249U true CN220780249U (en) | 2024-04-16 |
Family
ID=90632982
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322618806.4U Active CN220780249U (en) | 2023-09-26 | 2023-09-26 | Molten salt discharging system in oxidation process |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220780249U (en) |
-
2023
- 2023-09-26 CN CN202322618806.4U patent/CN220780249U/en active Active
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