CN212669212U - Nitrogen gas replacement device for needle coke hydrogen production unit - Google Patents
Nitrogen gas replacement device for needle coke hydrogen production unit Download PDFInfo
- Publication number
- CN212669212U CN212669212U CN202021622230.9U CN202021622230U CN212669212U CN 212669212 U CN212669212 U CN 212669212U CN 202021622230 U CN202021622230 U CN 202021622230U CN 212669212 U CN212669212 U CN 212669212U
- Authority
- CN
- China
- Prior art keywords
- nitrogen
- nitrogen gas
- hydrogen production
- valve
- stop valve
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Landscapes
- Catalysts (AREA)
Abstract
The utility model belongs to the technical field of needle coke production, concretely relates to needle coke hydrogen manufacturing unit nitrogen gas replacement device, including nitrogen buffer tank and hydrogen production ware, the nitrogen buffer tank pass through the nitrogen gas pipeline and be connected with the hydrogen production ware top, be equipped with nitrogen gas flowmeter, pressure sensor, first stop valve, electrical control valve, second stop valve and electric ball valve on the nitrogen gas pipeline in proper order, nitrogen gas flowmeter locates nitrogen buffer tank exit. The utility model adds a nitrogen line on the top of the hydrogen production reactor, which solves the technical defects that the reactor can not be cut off in the shutdown stage of the hydrogen production device and the catalyst in the reactor is separately protected by nitrogen replacement; and simultaneously, the utility model discloses can carry out the secondary to nitrogen gas flow and adjust, realize the accurate control to nitrogen gas flow, when electrical control valve and electric ball valve broke down, the normal operating of changeable valves guarantee production.
Description
Technical Field
The utility model belongs to the technical field of needle coke production, concretely relates to needle coke hydrogen manufacturing unit nitrogen gas replacement device.
Background
After the needle coke hydrogen production device is shut down, nitrogen needs to be injected to replace the reactor with nitrogen. At present, a nitrogen line of a reactor of a hydrogen production device is designed behind a methanol and acid water mixer at a feeding inlet, and nitrogen can only be injected into the nitrogen line to replace the nitrogen in the reactor after the hydrogen production device is shut down. However, when the feed lines and the heat exchangers for the reaction gas, the vaporizer and the superheater are out of order and need to be repaired, the reactor cannot be separately cut out for replacement and the catalyst protected.
SUMMERY OF THE UTILITY MODEL
The to-be-solved technical problem of the utility model is: the nitrogen replacement device overcomes the defects of the prior art, provides the nitrogen replacement device for the needle coke hydrogen production unit, and solves the technical defects that the reactor cannot be cut off in the shutdown phase of the hydrogen production device and the catalyst in the reactor is separately protected by nitrogen replacement.
The utility model discloses an adopt following technical scheme to realize:
needle coke hydrogen manufacturing unit nitrogen gas replacement device, including nitrogen buffer tank and hydrogen production reactor, the nitrogen buffer tank pass through the nitrogen gas pipeline and be connected with the hydrogen production reactor top, be equipped with nitrogen gas flowmeter, pressure sensor, first stop valve, electrical control valve, second stop valve and electric ball valve on the nitrogen gas pipeline in proper order, nitrogen gas flowmeter locates nitrogen buffer tank exit.
And a nitrogen pipeline between the pressure sensor and the first stop valve is communicated with a nitrogen pipeline between the electric ball valve and the top of the hydrogen production reactor through a cross line, and a manual regulating valve and a third stop valve are arranged on the cross line.
And a nitrogen pipeline between the electric regulating valve and the second stop valve is communicated with a crossover line between the manual regulating valve and the third stop valve through a connecting pipeline, and a fourth stop valve is arranged on the connecting pipeline.
The working principle and the process are as follows:
after the hydrogen production device is shut down, a first stop valve, an electric regulating valve, a second stop valve and an electric ball valve on a nitrogen pipeline are opened, nitrogen is conveyed into the hydrogen production reactor from a nitrogen buffer tank for replacement, and after the nitrogen is secondarily regulated by the electric regulating valve and the electric ball valve, the accurate control of the nitrogen flow can be realized; when the electric regulating valve and the electric ball valve simultaneously break down, the first stop valve and the second stop valve are closed, the manual regulating valve and the third stop valve are opened, and nitrogen can be emergently conveyed into the hydrogen production reactor from the cross line; when the electric regulating valve breaks down, the first stop valve is closed, the manual regulating valve and the fourth stop valve are opened, and nitrogen can be conveyed into the hydrogen production reactor through the manual regulating valve and the electric ball valve; when the electric ball valve breaks down, the second stop valve is closed, the fourth stop valve and the third stop valve are opened, and nitrogen can be conveyed into the hydrogen production reactor through the electric regulating valve, the fourth stop valve and the third stop valve.
Compared with the prior art, the beneficial effects of the utility model are as follows:
the utility model adds a nitrogen line on the top of the hydrogen production reactor, which solves the technical defects that the reactor can not be cut off in the shutdown stage of the hydrogen production device and the catalyst in the reactor is separately protected by nitrogen replacement; and simultaneously, the utility model discloses can carry out the secondary to nitrogen gas flow and adjust, realize the accurate control to nitrogen gas flow, when electrical control valve and electric ball valve broke down, the normal operating of changeable valves guarantee production.
Drawings
Fig. 1 is a schematic structural view of the present invention;
in the figure: 1. a nitrogen buffer tank; 2. a nitrogen line; 3. a nitrogen gas flow meter; 4. a pressure sensor; 5. a first shut-off valve; 6. an electric control valve; 7. a second stop valve; 8. an electric ball valve; 9. a crossover line; 10. a manual regulating valve; 11. connecting a pipeline; 12. a fourth stop valve; 13. a third stop valve; 14. a hydrogen production reactor.
Detailed Description
The present invention will be further described with reference to the accompanying drawings.
As shown in fig. 1, needle coke hydrogen production unit nitrogen gas replacement device, including nitrogen buffer tank 1 and hydrogen production reactor 14, nitrogen buffer tank 1 pass through nitrogen pipeline 2 and be connected with hydrogen production reactor 14 top, be equipped with nitrogen gas flowmeter 3, pressure sensor 4, first stop valve 5, electrical control valve 6, second stop valve 7 and electric ball valve 8 on the nitrogen pipeline 2 in proper order, nitrogen gas flowmeter 3 locates nitrogen buffer tank 1 exit.
And a nitrogen pipeline 2 between the pressure sensor 4 and the first stop valve 5 is communicated with a nitrogen pipeline 2 between the electric ball valve 8 and the top of the hydrogen production reactor 14 through a crossover line 9, and a manual regulating valve 10 and a third stop valve 13 are arranged on the crossover line 9.
And a nitrogen pipeline 2 between the electric regulating valve 6 and the second stop valve 7 is communicated with a crossover line 9 between the manual regulating valve 10 and the third stop valve 13 through a connecting pipeline 11, and a fourth stop valve 12 is arranged on the connecting pipeline 11.
During operation, after the hydrogen production device is shut down, the first stop valve 5, the electric regulating valve 6, the second stop valve 7 and the electric ball valve 8 on the nitrogen pipeline 2 are opened, nitrogen is conveyed from the nitrogen buffer tank 1 into the hydrogen production reactor 14 for replacement, and after the nitrogen is secondarily regulated by the electric regulating valve 6 and the electric ball valve 8, the accurate control of the nitrogen flow can be realized; when the electric regulating valve 6 and the electric ball valve 8 simultaneously break down, the first stop valve 5 and the second stop valve 7 are closed, the manual regulating valve 10 and the third stop valve 13 are opened, and nitrogen can be emergently conveyed into the hydrogen production reactor 14 from the overline 9; when the electric regulating valve 6 has a fault, the first stop valve 5 is closed, the manual regulating valve 10 and the fourth stop valve 12 are opened, and nitrogen can be conveyed into the hydrogen production reactor 14 through the manual regulating valve 10 and the electric ball valve 8; when the electric ball valve 8 has a fault, the second stop valve 7 is closed, the fourth stop valve 12 and the third stop valve 13 are opened, and nitrogen can be conveyed into the hydrogen production reactor 14 through the electric regulating valve 6, the fourth stop valve 12 and the third stop valve 13.
Of course, the above description is only a preferred embodiment of the present invention, and should not be taken as limiting the scope of the embodiments of the present invention. The present invention is not limited to the above examples, and the technical field of the present invention is equivalent to the changes and improvements made in the actual range of the present invention, which should be attributed to the patent coverage of the present invention.
Claims (3)
1. The utility model provides a needle coke hydrogen production unit nitrogen gas replacement device, includes nitrogen buffer tank (1) and hydrogen production ware (14), its characterized in that: nitrogen buffer tank (1) be connected with hydrogen production reactor (14) top through nitrogen gas pipeline (2), be equipped with nitrogen gas flowmeter (3), pressure sensor (4), first stop valve (5), electrical control valve (6), second stop valve (7) and electrical ball valve (8) on nitrogen gas pipeline (2) in proper order, nitrogen gas flowmeter (3) are located nitrogen gas buffer tank (1) exit.
2. The nitrogen replacement device for the needle coke hydrogen production unit according to claim 1, characterized in that: and a nitrogen pipeline (2) between the pressure sensor (4) and the first stop valve (5) is communicated with the nitrogen pipeline (2) between the electric ball valve (8) and the top of the hydrogen production reactor (14) through a crossover line (9), and a manual regulating valve (10) and a third stop valve (13) are arranged on the crossover line (9).
3. The nitrogen replacement device for the needle coke hydrogen production unit according to claim 2, characterized in that: nitrogen gas pipeline (2) between electric control valve (6) and second stop valve (7) and overline (9) between manual regulation valve (10) and third stop valve (13) pass through connecting line (11) intercommunication, be equipped with fourth stop valve (12) on connecting line (11).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021622230.9U CN212669212U (en) | 2020-08-06 | 2020-08-06 | Nitrogen gas replacement device for needle coke hydrogen production unit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021622230.9U CN212669212U (en) | 2020-08-06 | 2020-08-06 | Nitrogen gas replacement device for needle coke hydrogen production unit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212669212U true CN212669212U (en) | 2021-03-09 |
Family
ID=74821177
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021622230.9U Active CN212669212U (en) | 2020-08-06 | 2020-08-06 | Nitrogen gas replacement device for needle coke hydrogen production unit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212669212U (en) |
-
2020
- 2020-08-06 CN CN202021622230.9U patent/CN212669212U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN212669212U (en) | Nitrogen gas replacement device for needle coke hydrogen production unit | |
| CN104232846B (en) | A kind of system and method to RH refining furnace steam supply | |
| CN219526556U (en) | BGL gasifier nitrogen gas feed system | |
| CN212669213U (en) | Needle coke hydrogen production and hydrogenation linkage energy-saving device | |
| CN211570499U (en) | Isobutane production device | |
| CN113912010B (en) | Methanol reforming hydrogen production purification device and process | |
| US7452393B2 (en) | Installation for hydrogen production and methods for using same | |
| CN215982011U (en) | Hydrogen-nitrogen ratio adjusting device for synthetic ammonia reaction | |
| CN113999968B (en) | Autoclave acid adding system and control method | |
| CN101966472B (en) | Device for reducing catalyst for catalytic synthesis of dimethyl ether by one-step method | |
| CN204325413U (en) | A kind of system to RH refining furnace steam supply | |
| CN109028004A (en) | Peak regulation gas fired-boiler feedwater flow and pressure double-balance control system | |
| CN217952258U (en) | Balanced energy-saving process system of boiler water supply system | |
| CN210584343U (en) | Exhaust gas purification device | |
| CN111878843A (en) | Wide load denitration flue gas temperature lift system | |
| CN208684812U (en) | A kind of system of modification and recovery acetic acid plant byproduct steam | |
| CN219318415U (en) | Phenol recycling medium-pressure superheated steam recycling system | |
| CN111856940A (en) | Control method and device for low-load operation of thermal power generating unit and storage medium | |
| CN220376372U (en) | Combined regulating and controlling device for preparing ammonia water by cross process | |
| CN219571640U (en) | Chemical plant steam temperature and pressure reducer transformation system | |
| CN215489841U (en) | Calorific value adjusting system of concentrated methane hydrogen production converter | |
| CN214998143U (en) | System is reformed transform to gas separation device propylene tower backwash pump | |
| CN217329416U (en) | System for recovering BOG in shutdown state | |
| CN220878795U (en) | Heat exchange structure for initial delivery of hydrogenation catalyst after filling in butanol and octanol production | |
| CN216171191U (en) | Pressure swing adsorption hydrogen production tail gas recycle device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |