CN219955056U - Hydrogen production station released gas centralized collection and pressure stabilization conveying system - Google Patents
Hydrogen production station released gas centralized collection and pressure stabilization conveying system Download PDFInfo
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- CN219955056U CN219955056U CN202321445598.6U CN202321445598U CN219955056U CN 219955056 U CN219955056 U CN 219955056U CN 202321445598 U CN202321445598 U CN 202321445598U CN 219955056 U CN219955056 U CN 219955056U
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- air
- buffer tank
- blower
- pipeline
- air inlet
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- 239000007789 gas Substances 0.000 title claims abstract description 76
- 229910052739 hydrogen Inorganic materials 0.000 title claims abstract description 18
- 239000001257 hydrogen Substances 0.000 title claims abstract description 18
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 title claims abstract description 15
- 238000004519 manufacturing process Methods 0.000 title claims description 10
- 230000006641 stabilisation Effects 0.000 title description 5
- 238000011105 stabilization Methods 0.000 title description 5
- 238000001179 sorption measurement Methods 0.000 claims abstract description 26
- 238000001514 detection method Methods 0.000 claims abstract description 12
- 230000001105 regulatory effect Effects 0.000 claims description 9
- 238000011084 recovery Methods 0.000 claims description 4
- 239000012141 concentrate Substances 0.000 claims 1
- 238000011143 downstream manufacturing Methods 0.000 abstract description 3
- 239000002440 industrial waste Substances 0.000 abstract description 2
- 238000000034 method Methods 0.000 description 8
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 6
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 description 6
- 238000007599 discharging Methods 0.000 description 4
- 229910002092 carbon dioxide Inorganic materials 0.000 description 3
- 239000001569 carbon dioxide Substances 0.000 description 3
- 150000002431 hydrogen Chemical class 0.000 description 3
- 239000007788 liquid Substances 0.000 description 3
- 230000003139 buffering effect Effects 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 238000011065 in-situ storage Methods 0.000 description 2
- 238000007789 sealing Methods 0.000 description 2
- 230000000087 stabilizing effect Effects 0.000 description 2
- 238000005406 washing Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004523 catalytic cracking Methods 0.000 description 1
- 230000001276 controlling effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 238000013022 venting Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Landscapes
- Separation Of Gases By Adsorption (AREA)
Abstract
The technical field that steady voltage was carried is concentrated to industrial waste gas collection, concretely relates to steady voltage conveying system is concentrated to hydrogen plant release gas, including pressure swing adsorption contrary gassing air inlet line and vacuum exhaust gassing air inlet line, pressure swing adsorption contrary gassing air inlet line and vacuum exhaust gassing air inlet line all are connected to the inlet end of first release gas buffer tank, the inlet end of first release gas buffer tank is connected to the inlet end of second release gas buffer tank behind pressure detection instrument, the inlet end of second release gas buffer tank is connected to the air intake of first air-blower, second air-blower and third air-blower respectively, the air outlet of first air-blower, second air-blower and third air-blower is connected to the pipeline of giving vent to anger respectively. The utility model can comprehensively, continuously, stably, safely and efficiently convey the released gas, ensures the gas utilization safety of downstream processes, and has the characteristics of simple operation, high degree of automation, good safety performance, obvious economic benefit and strong practicability.
Description
Technical Field
The utility model belongs to the technical field of centralized collection and stable pressure conveying of industrial waste gas, and particularly relates to a centralized collection and stable pressure conveying system for released gas of a hydrogen production station.
Background
The methanol hydrogen production process obtains high-purity hydrogen through the steps of mixing, catalytic cracking, water washing, methanol washing, physical separation and the like, and simultaneously discharges the rest process release gas containing impurities such as hydrogen, carbon dioxide and the like. The released gas is usually intermittent and discontinuous, and the discharged pressure has volatility and cannot be directly discharged into facilities such as a torch, an incinerator and the like, and currently, the released gas of most factories is usually directly discharged at high altitude.
The main components in the released gas are hydrogen, carbon dioxide and the like, and the hydrogen, the carbon dioxide and the like have wide application, and the direct release can cause great waste of resources. And as environmental protection requirements of governments are becoming more stringent, some places do not allow the released gas to be directly discharged, and collection and treatment are necessary. Therefore, a collection and transportation system capable of solving intermittent discontinuity of released gas and pressure fluctuation is required.
Disclosure of Invention
According to the defects in the prior art, the utility model provides a centralized collecting and pressure stabilizing conveying system for the released gas of the hydrogen production station, which can comprehensively, continuously, stably, safely and efficiently convey the released gas and ensure the gas utilization safety of downstream processes.
The utility model relates to a centralized collection and pressure stabilization conveying system for released gas of a hydrogen production station, which comprises a pressure swing adsorption reverse-deflation air inlet pipeline and a vacuum exhaust air inlet pipeline, wherein the pressure swing adsorption reverse-deflation air inlet pipeline and the vacuum exhaust air inlet pipeline are both connected to the air inlet end of a first released gas buffer tank;
wherein, pressure swing adsorption reverse air discharge air inlet pipeline switch valve is arranged on the pressure swing adsorption reverse air discharge air inlet pipeline, and vacuum exhaust air inlet pipeline switch valve is arranged on the vacuum exhaust air inlet pipeline.
The bypass is connected to the discharge port through a pressure swing adsorption reverse discharge pipeline switch valve, the bypass is also arranged on the vacuum discharge pipeline and connected to the discharge port through a vacuum discharge gas discharge pipeline switch valve, and the tops of the first release gas buffer tank and the second release gas buffer tank are respectively connected to the discharge port through a first safety valve and a second safety valve. And when the pressure is over-pressure, the pressure can be released, so that the safety of the equipment is ensured.
The bottom one side of first release gas buffer tank be equipped with the level gauge, the top of first release gas buffer tank and second release gas buffer tank is connected to the condensate recovery pipeline respectively. When the liquid level reaches a certain degree, the condensate of the buffer tank can be recovered in a sealing way, and the condensate can be recovered in a sealing way at regular time.
The air outlet pipeline is provided with an air blower outlet pressure detection instrument, and the air outlet pipeline is also connected back to the air outlet end of the second released air buffer tank through an air blower outlet pipeline safety valve. The air outlet pipe is provided with a bypass, and the bypass is connected to the air outlet end of the second release air buffer tank through a bypass pipeline pressure regulating valve. When the pressure in the second buffer tank is too low, the air at the air outlet of the air blower can flow back to the inlet, the second buffer tank is kept to be positive pressure, and the pressure stabilizing device can be used for controlling the stability of the pressure at the outlet of the air blower.
The first air blower, the second air blower and the third air blower are all variable frequency fans. The frequency conversion fan is adopted, the frequency of the fan can be automatically adjusted according to the pressure of the pressure detection instrument (the set adjusting range is 30-50 Hz), the frequency is reduced when the pressure is low, the frequency is increased when the pressure is high, the automatic control in the release gas conveying process is realized, and the problem of discontinuous release gas emission and pressure fluctuation is solved.
The devices are connected with each other through pipelines or flanges.
The valves, the meters and the like can be all connected into the DCS to realize remote control, the on-site operation is not needed, the production safety is improved, the labor intensity of workers is reduced, and the labor cost is saved.
The utility model has the beneficial effects that:
1. the pressure detection instrument is arranged between the two release gas buffer tanks, can form interlocking with each switch valve and the three blowers, ensures stable control of the inlet pressure of the blowers, and solves the problem of fluctuation of release gas pressure.
2. The three blower outlet pipelines are provided with the blower outlet pipeline safety valve and the bypass pipeline pressure regulating valve, and form interlocking with the pressure detecting instrument, so that the stability of the blower outlet pressure can be controlled, and the problem of pressure fluctuation in the delivery process of released gas is solved.
3. The three blowers adopt variable frequency fans and form interlocking with the pressure detection instrument, the frequency of the fans can be automatically adjusted according to the pressure of the pressure detection instrument (the set adjusting range is 30-50 Hz), the frequency is reduced when the pressure is low, the frequency is increased when the pressure is high, the automatic control in the release gas conveying process is realized, and the problems of discontinuous release gas emission and pressure fluctuation are solved.
In summary, the utility model can comprehensively, continuously, stably, safely and efficiently convey the released gas, ensures the gas utilization safety of the downstream process, and has the characteristics of simple operation, high degree of automation, good safety performance, obvious economic benefit and strong practicability.
Drawings
Fig. 1 is a schematic structural view of the present utility model.
In the figure: 1. a pressure swing adsorption reverse-gassing air inlet pipeline; 2. a vacuum exhaust gas inlet pipeline; 3. a first release gas buffer tank; 4. a pressure detecting instrument; 5. a second release gas buffer tank; 6. a first blower; 7. a second blower; 8. a third blower; 9. an air outlet pipeline; 10. a pressure swing adsorption reverse-deflation air inlet pipeline switch valve; 11. a vacuum exhaust gas inlet pipeline switch valve; 12. switching valve of pressure swing adsorption reverse discharge pipeline; 13. a bleed port; 14. a vacuum exhaust gas discharge pipeline switch valve; 15. a first safety valve; 16. a second safety valve; 17. a liquid level gauge; 18. a condensate recovery pipeline; 19. an outlet pressure detecting instrument of the blower; 20. a blower outlet line safety valve; 21. a bypass line pressure regulator valve.
Detailed Description
Embodiments of the utility model are further described below with reference to the accompanying drawings:
as shown in fig. 1, the hydrogen production station released gas centralized collection and pressure stabilization conveying system comprises a pressure swing adsorption reverse bleed air inlet pipeline 1 and a vacuum exhaust air inlet pipeline 2, wherein the pressure swing adsorption reverse bleed air inlet pipeline 1 and the vacuum exhaust air inlet pipeline 2 are connected to the air inlet end of a first released gas buffer tank 3, the air outlet end of the first released gas buffer tank 3 is connected to the air inlet end of a second released gas buffer tank 5 after passing through a pressure detection instrument 4, the air outlet end of the second released gas buffer tank 5 is respectively connected to air inlets of a first air blower 6, a second air blower 7 and a third air blower 8, and air outlets of the first air blower 6, the second air blower 7 and the third air blower 8 are respectively connected to an air outlet pipeline 9;
wherein, the pressure swing adsorption reverse air discharge air inlet pipeline 1 is provided with a pressure swing adsorption reverse air discharge air inlet pipeline switch valve 10, and the vacuum exhaust air inlet pipeline 2 is provided with a vacuum exhaust air inlet pipeline switch valve 11.
The pressure swing adsorption reverse bleed air inlet pipeline 1 is provided with a bypass, the bypass is connected to the bleed opening 13 through a pressure swing adsorption reverse bleed air inlet pipeline switch valve 12, the vacuum bleed air inlet pipeline 2 is also provided with a bypass, the bypass is connected to the bleed opening 13 through a vacuum bleed air outlet pipeline switch valve 14, and the tops of the first release air buffer tank 3 and the second release air buffer tank 5 are respectively connected to the bleed opening 13 through a first safety valve 15 and a second safety valve 16.
The bottom side of the first release gas buffer tank 3 is provided with a liquid level meter 17, and the tops of the first release gas buffer tank 3 and the second release gas buffer tank 5 are respectively connected to a condensate recovery pipeline 18.
The air outlet pipeline 9 is provided with an air blower outlet pressure detecting instrument 19, and the air outlet pipeline 9 is also connected back to the air outlet end of the second release air buffer tank 5 through an air blower outlet pipeline safety valve 20. The air outlet pipeline 9 is provided with a bypass, and the bypass is connected to the air outlet end of the second release air buffer tank 5 through a bypass pipeline pressure regulating valve 21.
The first blower 6, the second blower 7 and the third blower 8 are all variable frequency blowers.
The use process is as follows:
the pressure swing adsorption reverse-discharging gas and the vacuum discharging gas from the previous working procedure are respectively conveyed into a first releasing gas buffer tank 3 for buffering through a pressure swing adsorption reverse-discharging gas inlet pipeline 1 and a vacuum discharging gas inlet pipeline 2, then enter a second releasing gas buffer tank 5 for further buffering and pressure stabilization, finally are conveyed to a blower, the 3 blowers are provided with two blowers, and the air is pressurized by the blower and then conveyed to the next working procedure through an air outlet pipeline 9.
Furthermore, all valves, meters and the like can be connected into the DCS to realize remote control, on-site operation is not needed, the production safety is improved, the labor intensity of workers is reduced, and the labor cost is saved.
For example:
the three blowers are frequency conversion devices, the frequency is interlocked with the pressure detection instrument 4, the frequency of the blowers is automatically adjusted according to the pressure of the pressure detection instrument 4 (PICAS-101) (the set adjusting range is 30-50 Hz), the frequency is reduced when the pressure detection instrument 4 detects that the pressure is low, and the frequency is increased when the pressure is high.
When the pressure of the first release gas buffer tank 3 is more than or equal to 40kPaG, the pressure relief and venting of the pressure swing adsorption reverse release pipeline switch valve 12 (XV-101B) and the vacuum exhaust gas release pipeline switch valve 14 (XV 102B) are opened in an interlocking manner, the pressure swing adsorption reverse release gas inlet pipeline switch valve 10 (XV-101A) and the vacuum exhaust gas inlet pipeline switch valve 11 (XV-102A) are kept in an open state, and the air blower is operated at a regulating frequency of 30 Hz; when the pressure of the first released gas buffer tank 3 is more than or equal to 80kPaG, the XV-101A and the XV-102A are closed in an interlocking way; in the in-situ emptying process, when the first released gas buffer tank 3 is not more than 20kPaG, the XV-101B and the XV-102B are closed in an interlocking way, and the frequency of the blower is regulated normally.
When all three blasts are stopped, the interlocking is closed for XV-101A and XV-102A, and the interlocking is opened for XV-101B and XV-102B, so that the air is discharged in situ.
The pressure signal PICA-102 (blower outlet pressure detecting instrument 19) is arranged at the blower outlet, the PICA-102 is interlocked with the PV-101 (bypass pipeline pressure regulating valve 21) and is automatically regulated at 60-80KPaG, the PICA-102 is normally maintained at 70KPaG, the opening degree of the PV101 is automatically regulated under the pressure working condition of maintaining the PICA-102, and the system pressure of the blower is stabilized. Meanwhile, when the PICAS-101 pressure is smaller than 5KPaG, the opening degree of the PV101 needs to be interlocked, so that the air at the air outlet of the blower flows back to the inlet, and the positive pressure of the buffer tank is kept.
Claims (6)
1. The utility model provides a steady voltage conveying system is collected in hydrogen manufacturing station release gas concentrate which characterized in that: the device comprises a pressure swing adsorption reverse air discharge air inlet pipeline (1) and a vacuum air discharge air inlet pipeline (2), wherein the pressure swing adsorption reverse air discharge air inlet pipeline (1) and the vacuum air discharge air inlet pipeline (2) are connected to the air inlet end of a first air discharge buffer tank (3), the air outlet end of the first air discharge buffer tank (3) is connected to the air inlet end of a second air discharge buffer tank (5) after passing through a pressure detection instrument (4), the air outlet end of the second air discharge buffer tank (5) is respectively connected to the air inlets of a first air blower (6), a second air blower (7) and a third air blower (8), and the air outlets of the first air blower (6), the second air blower (7) and the third air blower (8) are respectively connected to an air outlet pipeline (9);
wherein, pressure swing adsorption reverse air bleed air inlet pipeline (1) is provided with pressure swing adsorption reverse air bleed air inlet pipeline switch valve (10), and vacuum exhaust air inlet pipeline (2) is provided with vacuum exhaust air inlet pipeline switch valve (11).
2. The hydrogen plant released gas centralized collection and stabilized delivery system of claim 1, wherein: the utility model provides a pressure swing adsorption reverse gassing air inlet pipeline (1) on be equipped with the bypass, its bypass is connected to discharge mouth (13) through pressure swing adsorption reverse relief pipeline ooff valve (12), also is equipped with the bypass on vacuum exhaust gas air inlet pipeline (2), its bypass is connected to discharge mouth (13) through vacuum exhaust gas ooff valve (14), the top of first relief gas buffer tank (3) and second relief gas buffer tank (5) is connected to discharge mouth (13) through first relief valve (15) and second relief valve (16) respectively.
3. The hydrogen plant released gas centralized collection and stabilized delivery system of claim 1, wherein: the bottom one side of first release gas buffer tank (3) be equipped with level gauge (17), the top of first release gas buffer tank (3) and second release gas buffer tank (5) is connected to condensate recovery pipeline (18) respectively.
4. The hydrogen plant released gas centralized collection and stabilized delivery system of claim 1, wherein: the air outlet pipeline (9) is provided with an air blower outlet pressure detection instrument (19), and the air outlet pipeline (9) is also connected back to the air outlet end of the second release air buffer tank (5) through an air blower outlet pipeline safety valve (20).
5. The hydrogen plant released gas centralized collection and stabilized delivery system as defined in claim 4, wherein: the air outlet pipeline (9) is provided with a bypass, and the bypass is connected to the air outlet end of the second release air buffer tank (5) through a bypass pipeline pressure regulating valve (21) in a return mode.
6. The hydrogen plant released gas centralized collection and stabilized delivery system of claim 1, wherein: the first air blower (6), the second air blower (7) and the third air blower (8) are all variable-frequency fans.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321445598.6U CN219955056U (en) | 2023-06-07 | 2023-06-07 | Hydrogen production station released gas centralized collection and pressure stabilization conveying system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321445598.6U CN219955056U (en) | 2023-06-07 | 2023-06-07 | Hydrogen production station released gas centralized collection and pressure stabilization conveying system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219955056U true CN219955056U (en) | 2023-11-03 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321445598.6U Active CN219955056U (en) | 2023-06-07 | 2023-06-07 | Hydrogen production station released gas centralized collection and pressure stabilization conveying system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219955056U (en) |
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2023
- 2023-06-07 CN CN202321445598.6U patent/CN219955056U/en active Active
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