CN107366895A - A kind of method of quick-replaceable coke dry quenching boiler drum safety valve - Google Patents
A kind of method of quick-replaceable coke dry quenching boiler drum safety valve Download PDFInfo
- Publication number
- CN107366895A CN107366895A CN201610312015.0A CN201610312015A CN107366895A CN 107366895 A CN107366895 A CN 107366895A CN 201610312015 A CN201610312015 A CN 201610312015A CN 107366895 A CN107366895 A CN 107366895A
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- Prior art keywords
- boiler
- coke
- quenching
- dry
- valve
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F22—STEAM GENERATION
- F22B—METHODS OF STEAM GENERATION; STEAM BOILERS
- F22B37/00—Component parts or details of steam boilers
- F22B37/02—Component parts or details of steam boilers applicable to more than one kind or type of steam boiler
- F22B37/42—Applications, arrangements, or dispositions of alarm or automatic safety devices
- F22B37/44—Applications, arrangements, or dispositions of alarm or automatic safety devices of safety valves
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10B—DESTRUCTIVE DISTILLATION OF CARBONACEOUS MATERIALS FOR PRODUCTION OF GAS, COKE, TAR, OR SIMILAR MATERIALS
- C10B39/00—Cooling or quenching coke
- C10B39/02—Dry cooling outside the oven
Abstract
A kind of method of quick-replaceable coke dry quenching boiler drum safety valve of the present invention, this method is to be passed through nitrogen into the gas piping of coke dry quenching furnace and boiler, cold water cooling is carried out by the way of water operation is covered, cold air is entered from boiler manhole from dry coke quenching fire door using buoyant gas simultaneously and release mode, it is quick to reduce coke dry quenching boiler temperature, finally realize the quick-replaceable of boiler drum safety valve；Compared with prior art, the beneficial effects of the invention are as follows：1) present invention can shorten the time that boiler drum reaches replacing safety valve condition, and the condition changed required for boiler drum safety valve was reached in 8 hours.2) present invention can reduce the accident treatment time, reduce production loss.
Description
Technical field
The present invention relates to coking technology field, more particularly to a kind of method of quick-replaceable coke dry quenching boiler drum safety valve.
Background technology
After coke dry quenching boiler drum pressure exceedes regulation allowed band, boiler drum safety valve jumping up, pressure is discharged, ensure pot
Stove drum safe and stable operation.
But because boiler drum safety valve such as does not fall after rise or not the reason, safety valve body is caused to damage.Because boiler drum safety valve is weldering
Connect in succession, argon arc welding mode is used when changing safety valve, argon arc welding there can not be steam in scene in welding, to working environment
It is required that it is higher, therefore it is required that boiler drum wants decrease temperature and pressure, reach and change safety valve condition.
Traditional replacing options are needed dry coke quenching blowing out, are changed after whole circulatory system temperature thoroughly reduces.It is dry to put out
The process of Jiao-steam generator system cooling is very long, if it is desired to quick-replaceable boiler drum safety valve, resumes production as early as possible, reduces life
Production loss, it is necessary to a kind of method that can shorten dry coke quenching-steam generator system temperature fall time, reach boiler drum safety as early as possible
The replacing condition of valve.
The content of the invention
It is an object of the invention to provide a kind of method of quick-replaceable coke dry quenching boiler drum safety valve, it can shorten and reach replacing
The time of condition needed for safety valve, quickly resume production, reduce production loss.
To achieve the above object, the present invention is realized using following technical scheme：
A kind of method of quick-replaceable coke dry quenching boiler drum safety valve, this method are the gas pipings to coke dry quenching furnace and boiler
In be passed through nitrogen, carry out cold water cooling by the way of water operation is covered, while make cold air from boiler manhole using buoyant gas
Mode is released into from dry coke quenching fire door, it is quick to reduce coke dry quenching boiler temperature, finally realize the quick of boiler drum safety valve
Change；Specific method step is as follows：
1) it is burnt to stop dry coke quenching dress, reduces dry coke quenching material position；
2) valve progressively closed on oxygen-eliminating device steam-heated pipe line, oxygen-eliminating device heating steam is progressively closed, by oxygen-eliminating device water
Temperature is reduced to normal temperature；
3) bulkhgead gate at coke discharging is closed, dry quenching circulating fan revolution is run with 400-600 revs/min of speed, gradually
Coke dry quenching furnace temperature is reduced to 590-610 DEG C；
4) nitrogen is passed through into coke dry quenching furnace and boiler, opens bleeding valve, emergency diffusion valve is opened, by main steam pipe
Stop valve on road is closed, then main steam line diffusion valve is opened；
5) using set water operating type, by deaerated feedwater pump, the water in sweet-water tank is directly squeezed into boiler, to dry
Quenching boiler carries out cold water jacket water operation, and the quick boiler temperature that reduces is to 85-95 DEG C；
6) boiler manhole door and dry coke quenching bell are opened, cold air is entered from boiler manhole from dry coke quenching bell and discharges, enter
One step reduces boiler temperature to 65-75 DEG C；
7) boiler drum manhole is opened, residue vapor in boiler drum is released, and is carried out using axial flow blower alignment manhole
Purging；
8) after failsafe valve is removed, boiler drum and safety valve interface channel are blocked with tamper, safe valve replacement
After taken out from drum manhole by tamper.
Compared with prior art, the beneficial effects of the invention are as follows：
1) present invention can shorten the time that boiler drum reaches replacing safety valve condition, and replacing boiler was reached in 8 hours
Condition required for drum safety valve.
2) present invention can reduce the accident treatment time, reduce production loss.
Brief description of the drawings
Fig. 1 is the artwork of dry coke quenching-steam generator system in the present invention.
In figure：1. the emergency diffusion valve of bolt 5. in the dry coke quenching of 2. bleeding valve of charging apparatus, 3. coke dry quenching furnace 4.
6. the boiler drum of 10. boiler drum of disposable dust remover 7. boiler inlet, 8. boiler drum safety valve, 9. manhole 11.
Top atmospheric valve 12. 2 crosses the boiler feed pump of 14. deaerated feedwater pump of outlet conduit 13. oxygen-eliminating device of atmospheric valve 15.
16. the heat pipe of 20. circulating fan of boiler manhole door 17. boiler, 18. boiler export, 19. secondary filter 21. changes
The hot bulkhgead gate of device 22.
Embodiment
Embodiments of the present invention are further illustrated with reference to specific embodiment：
As shown in figure 1, dry coke quenching-steam generator system is by coke dry quenching furnace 3, boiler 17 and for gas path pipe connecting the two
And the waterway pipe composition of boiler 17.High-temperature flue gas caused by coke dry quenching furnace 3 after one-time dedusting into boiler 17 by changing
Heat, the flue gas after the heat exchange of boiler 17 add nitrogen cooling after final dusting, and it is furnace bottom to come back in coke dry quenching furnace 3
Portion's dry coke quenching cooling.
Boiler 17 by connecting oxygen-eliminating device 13 with feedwater piping to boiler water pump 15, the recirculated water in boiler 17 need by
Reenter in boiler 17 and circulate after the deoxygenation of oxygen-eliminating device 13, into oxygen-eliminating device 13 before water need to be in steam-heated pipe line
It is heated to certain temperature.Also connection deaerated feedwater pump 14 is used to be the moisturizing of boiler 17 oxygen-eliminating device 13 in addition, deaerated feedwater pump
14 are directly connected to boiler 17 through another way pipeline simultaneously.
Boiler drum safety valve 8 is arranged on the top of boiler drum 10, and manhole 9 is additionally provided with the both sides of boiler drum 10.
When boiler drum safety valve 8 damages, it is necessary to which blowing out cooling is changed.Itself spy of the present invention for dry coke quenching-steam generator system
Point provides a kind of method of quick-replaceable coke dry quenching boiler drum safety valve, and this method is to coke dry quenching furnace 3 and boiler 17
Gas piping in be passed through nitrogen, carry out cold water cooling by the way of water operation is covered, while make cold air using buoyant gas
Enter from boiler manhole from dry coke quenching fire door and release mode, it is quick to reduce coke dry quenching boiler temperature, finally realize that boiler drum is pacified
The quick-replaceable of full valve 8；Specific method step is as follows：
1) it is burnt to stop dry coke quenching dress, reduces dry coke quenching material position.
Before operation starts, it is burnt that coke dry quenching furnace 3 stops dress.Stop coke discharging after coke dry quenching furnace drop material position is exposed to chute mouth.
Then device 1 is loaded into disconnect with bell.And it is loaded into the equipment such as all oil pipes in fire door area, cable and carries out fire prevention, prevents
High temperature measure.
2) valve progressively closed on oxygen-eliminating device steam-heated pipe line, oxygen-eliminating device heating steam is progressively closed, by oxygen-eliminating device 13
Circulating water temperature into boiler is reduced to normal temperature (25 DEG C or so).
3) bulkhgead gate at coke discharging 22 to be closed, the revolution of dry quenching circulating fan 20 is run with 400-600 revs/min of speed,
The temperature of coke dry quenching furnace 3 is gradually reduced to 590-610 DEG C；
The temperature of coke dry quenching furnace 3 and boiler 17 is gradually reduced by wind path circulation, while in order to prevent the bottom of coke dry quenching furnace 3
Air enter in stove and cause the burning of coke, bulkhgead gate at coke discharging 22 need to be closed.
4) treat that the temperature of boiler gas entrance 7 is down to less than 600 DEG C, stop circulating fan 20 and run.It is burnt that dry-cleaning will be arranged on
The middle bolt 4 for being used to import air on stove to coke dry quenching furnace is closed.Dry coke quenching final dusting is rushed into nitrogen point to open, to coke dry quenching furnace
3 and boiler 17 in be passed through nitrogen, open bleeding valve 2, emergency diffusion valve 5 opened, by the cut-out on main steam line
Valve is closed, then main steam line diffusion valve is opened, and further reduces the gas path temperature of coke dry quenching furnace 3 and boiler 17.
5) using set water operating type, by deaerated feedwater pump 14, the water in sweet-water tank is directly squeezed into boiler 17,
Cold water jacket water operation is carried out to coke dry quenching boiler, the quick boiler temperature that reduces is to 85-95 DEG C.
While to gas path pipe inflated with nitrogen, the normal operation of boiler feed pump 15, open main steam line etc. and dredge everywhere
The sewage draining valve of water and evaporator and water-cooling wall etc..When the pressure of boiler drum 10 is down to zero, opens two and cross outlet conduit
Atmospheric valve 12, boiler drum top atmospheric valve 11.Carry out covering water operation, boiler feed pump 15 is closed, open deoxygenation and give
Water pump 14, the cold water in sweet-water tank are directly squeezed into boiler 17 by deaerated feedwater pump 14, quickly reduce boiler temperature.
When temperature is reduced to 90 DEG C in stove water, interruption opens deaerated feedwater pump 14.
6) boiler manhole door and dry coke quenching bell are opened, cold air is entered from boiler manhole 16 from dry coke quenching bell and discharges,
Boiler temperature is further reduced to 65-75 DEG C.
7) when stove coolant-temperature gage is reduced to 70 DEG C, boiler drum manhole 9 is opened, residue vapor in boiler drum 10 is released,
And purged using axial flow blower alignment manhole 9, steam in drum is blown out.
Control hydrophobic valve everywhere, boiler drum liquid level is kept floor manager, to prevent water at manhole 9 in -200mm or so
Overflow.
8) after failsafe valve 8 is removed, boiler drum 10 and the interface channel of safety valve 8 is blocked with tamper, prevented
Steam is sealed in, and tamper iron wire or rope are connected, and by connect tamper iron wire or rope from boiler drum both ends
Manhole 9 at stretch out, safety valve 8 change after tamper is taken out from drum manhole 9.
9) after the replacing of safety valve 9 terminates, boiler drum manhole door is closed, is progressively resumed production.
Claims (1)
- A kind of 1. method of quick-replaceable coke dry quenching boiler drum safety valve, it is characterised in that this method is to coke dry quenching furnace Nitrogen is passed through with the gas piping of boiler, carries out cold water cooling by the way of water operation is covered, while make using buoyant gas Cold air enters from dry coke quenching fire door from boiler manhole releases mode, quick to reduce coke dry quenching boiler temperature, finally realizes boiler The quick-replaceable of drum safety valve；Specific method step is as follows：1) it is burnt to stop dry coke quenching dress, reduces dry coke quenching material position；2) valve progressively closed on oxygen-eliminating device steam-heated pipe line, oxygen-eliminating device heating steam is progressively closed, by oxygen-eliminating device water Temperature is reduced to normal temperature；3) bulkhgead gate at coke discharging is closed, dry quenching circulating fan revolution is run with 400-600 revs/min of speed, gradually Coke dry quenching furnace temperature is reduced to 590-610 DEG C；4) nitrogen is passed through into coke dry quenching furnace and boiler, opens bleeding valve, emergency diffusion valve is opened, by main steam pipe Stop valve on road is closed, then main steam line diffusion valve is opened；5) using set water operating type, by deaerated feedwater pump, the water in sweet-water tank is directly squeezed into boiler, to dry Quenching boiler carries out cold water jacket water operation, and the quick boiler temperature that reduces is to 85-95 DEG C；6) boiler manhole door and dry coke quenching bell are opened, cold air is entered from boiler manhole from dry coke quenching bell and discharges, enter One step reduces boiler temperature to 65-75 DEG C；7) boiler drum manhole is opened, residue vapor in boiler drum is released, and is carried out using axial flow blower alignment manhole Purging；8) after failsafe valve is removed, boiler drum and safety valve interface channel are blocked with tamper, safe valve replacement After taken out from drum manhole by tamper.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610312015.0A CN107366895B (en) | 2016-05-12 | 2016-05-12 | A kind of method of quick-replaceable coke dry quenching boiler drum safety valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610312015.0A CN107366895B (en) | 2016-05-12 | 2016-05-12 | A kind of method of quick-replaceable coke dry quenching boiler drum safety valve |
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| CN107366895A true CN107366895A (en) | 2017-11-21 |
| CN107366895B CN107366895B (en) | 2019-08-27 |
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| CN201610312015.0A Active CN107366895B (en) | 2016-05-12 | 2016-05-12 | A kind of method of quick-replaceable coke dry quenching boiler drum safety valve |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108587656A (en) * | 2018-07-03 | 2018-09-28 | 山东钢铁股份有限公司 | A kind of dry coke quenching circulatory system and nitrogen charging replacing process |
| CN108624339A (en) * | 2018-05-11 | 2018-10-09 | 鞍钢股份有限公司 | A kind of winter coke dry quenching furnace annual overhaul heat preserving method |
| CN109575957A (en) * | 2018-11-19 | 2019-04-05 | 包头钢铁（集团）有限责任公司 | A kind of method of dry coke quenching auxiliary hot repair heat preservation decompression |
| CN110467932A (en) * | 2019-09-12 | 2019-11-19 | 石横特钢集团有限公司 | A method of for coke dry quenching boiler fast cooling |
| CN111575027A (en) * | 2020-04-23 | 2020-08-25 | 包头钢铁（集团）有限责任公司 | Method for comprehensively processing power failure accident of coke dry quenching system |
| CN113308257A (en) * | 2021-06-21 | 2021-08-27 | 马鞍山钢铁股份有限公司 | Method for rapidly cooling tube explosion of coke dry quenching boiler |
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| JPH08159403A (en) * | 1994-12-01 | 1996-06-21 | Ishikawajima Harima Heavy Ind Co Ltd | Auxiliary vapor controller for boiler |
| FR2738363A1 (en) * | 1995-09-06 | 1997-03-07 | Siemens Ag | SAFETY VALVE DEVICE FOR USE IN PRESSURE MAINTENANCE SYSTEMS OF POWER PLANTS |
| CN1266084A (en) * | 2000-03-23 | 2000-09-13 | 上海宝钢集团公司 | Dry extinguishing coke pot flue pipe local overhauling method and equipment thereof |
| CN101443177A (en) * | 2006-05-17 | 2009-05-27 | 赫斯基注射器成型系统有限公司 | Molding-system valve having knockdown retainer |
| CN103317295A (en) * | 2012-03-22 | 2013-09-25 | 宝山钢铁股份有限公司 | Oxygen valve online repairing method |
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Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
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| JPH08159403A (en) * | 1994-12-01 | 1996-06-21 | Ishikawajima Harima Heavy Ind Co Ltd | Auxiliary vapor controller for boiler |
| FR2738363A1 (en) * | 1995-09-06 | 1997-03-07 | Siemens Ag | SAFETY VALVE DEVICE FOR USE IN PRESSURE MAINTENANCE SYSTEMS OF POWER PLANTS |
| CN1266084A (en) * | 2000-03-23 | 2000-09-13 | 上海宝钢集团公司 | Dry extinguishing coke pot flue pipe local overhauling method and equipment thereof |
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108624339A (en) * | 2018-05-11 | 2018-10-09 | 鞍钢股份有限公司 | A kind of winter coke dry quenching furnace annual overhaul heat preserving method |
| CN108624339B (en) * | 2018-05-11 | 2020-09-29 | 鞍钢股份有限公司 | Winter dry quenching furnace annual repair heat preservation method |
| CN108587656A (en) * | 2018-07-03 | 2018-09-28 | 山东钢铁股份有限公司 | A kind of dry coke quenching circulatory system and nitrogen charging replacing process |
| CN108587656B (en) * | 2018-07-03 | 2023-12-22 | 山东钢铁股份有限公司 | Dry quenching circulating system and nitrogen charging replacement process |
| CN109575957A (en) * | 2018-11-19 | 2019-04-05 | 包头钢铁（集团）有限责任公司 | A kind of method of dry coke quenching auxiliary hot repair heat preservation decompression |
| CN110467932A (en) * | 2019-09-12 | 2019-11-19 | 石横特钢集团有限公司 | A method of for coke dry quenching boiler fast cooling |
| CN110467932B (en) * | 2019-09-12 | 2021-06-15 | 石横特钢集团有限公司 | Method for rapidly cooling coke dry quenching boiler |
| CN111575027A (en) * | 2020-04-23 | 2020-08-25 | 包头钢铁（集团）有限责任公司 | Method for comprehensively processing power failure accident of coke dry quenching system |
| CN111575027B (en) * | 2020-04-23 | 2021-06-22 | 包头钢铁（集团）有限责任公司 | Method for comprehensively processing power failure accident of coke dry quenching system |
| CN113308257A (en) * | 2021-06-21 | 2021-08-27 | 马鞍山钢铁股份有限公司 | Method for rapidly cooling tube explosion of coke dry quenching boiler |
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| CN107366895B (en) | 2019-08-27 |
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