CN106867549A - A kind of coke dry quenching boiler do not stop production realize maintenance method - Google Patents
A kind of coke dry quenching boiler do not stop production realize maintenance method Download PDFInfo
- Publication number
- CN106867549A CN106867549A CN201710102594.0A CN201710102594A CN106867549A CN 106867549 A CN106867549 A CN 106867549A CN 201710102594 A CN201710102594 A CN 201710102594A CN 106867549 A CN106867549 A CN 106867549A
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- Prior art keywords
- coke
- flashboard
- dry quenching
- coke dry
- boiler
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Classifications
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- 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
-
- 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
- C10B45/00—Other details
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Organic Chemistry (AREA)
- Coke Industry (AREA)
Abstract
Do not stopped production the method for realizing maintenance the present invention relates to a kind of coke dry quenching boiler, and flashboard one is set at the inert gas entrance of coke dry quenching boiler, and flashboard two is set at the inert gas outlet of coke dry quenching boiler；Direction is circulated along inert gas, the forward and backward inertia cycle gas pipe of coke dry quenching boiler is connected additionally by by-pass line, and heat-exchanger rig is set on by-pass line, and the forward and backward two ends of by-pass line set flashboard three and flashboard four respectively；When dry coke quenching process system is normally produced, flashboard three and flashboard four are closed, and heat-exchanger rig is not involved in dry coke quenching production；When coke dry quenching boiler needs maintenance, coke dry quenching furnace is normally run；Flashboard one and flashboard two are closed, coke dry quenching boiler is isolated from dry coke quenching process system, can be overhauled after the cooling of coke dry quenching boiler burner hearth；The present invention realizes dry coke quenching process system during coke dry quenching boiler is overhauled and does not stop production, and its is easy to implement, and can ensure operation stability of the dry coke quenching process system during coke dry quenching boiler is overhauled.
Description
Technical field
The present invention relates to coking technology field, more particularly to a kind of coke dry quenching boiler does not stop production the method for realizing maintenance.
Background technology
Dry coke quenching is the important technology and technique of energy-saving and emission-reduction in steel and iron industry, and it is burnt dry with red using inert gas
Put out carried out in stove gas-solid mutually exchange heat by coke extinguish method.
Coke dry quenching boiler is an important component in whole dry coke quenching process system, and its effect is to reduce dry coke quenching
The temperature of system. Inert recyclegas, produces steam to be used to heat supply or generating, obtains the heat of inertia recyclegas to reach
The purpose for effectively utilizing.Whether coke dry quenching boiler operation will well directly influence the operation of dry coke quenching process system.
At present, coke dry quenching boiler has two kinds of design forms：One kind is medium temperature and medium pressure boiler, and one kind is high-temperature high-pressure boiler.
The volume of two kinds of boilers is all higher than 30L, discharge pressure and is all higher than 0.1MPa, so coke dry quenching boiler must all be promulgated according to country
's《Safety Supervision on Special Equipment regulations》、《Boiler safety technology Supervision Code》Carry out periodic inspection.Have identical in two standards
Regulation, i.e., boiler exterior inspection, carry out once every year；Boiler internal is checked, and is carried out once within every 2 years.It is domestic all of dry to put out
Burnt boiler must be performed all according to this standard.
In every 2 years boiler internal inspection periods once, it is necessary to professional tests into boiler, it is necessary to which stop production inspection
Repair；Red Jiao can not be loaded in coke dry quenching furnace, it is necessary to which cooling ensures that temperature reaches what personnel can enter in coke dry quenching boiler burner hearth
Temperature.Coke dry quenching boiler cooling, boiler internal inspection, inspection finish the process that rear dry quenching system heats up again, even if in pot
Stove is also required to carry out 15 days or so in the case of not having any problem.In addition, during dry coke quenching process system runs well, by
There is booster phenomenon when circulating hot gases entrainment coke powder causes coke dry quenching boiler also, now coke dry quenching furnace can not continue to load
Red Jiao, it is necessary to which blowing out cooling can enter the temperature of maintenance to ensure that coke dry quenching boiler temperature drops to personnel.When boiler tube bursting is overhauled
Between it is general at 7 to 10 days or so.
During boiler internal inspection and boiler tube bursting are overhauled, coke dry quenching furnace can not load red Jiao, and the coke of coke oven output is only
Can be processed by coke wet quenching system, and coke wet quenching system has as a drawback that：
1) coke wet quenching is big for environment pollution, is a kind of quenching of backwardness to airborne release a large amount of dust during coke wet quenching
Technology；
2) coke dry quenching body is refractory brick marshalling structure, and coke dry quenching body cooling, this process temperature change that heats up are violent,
The acute variation of temperature can crack the resistance to material of masonry, and this high temperature change directly affects making for the resistance to material of coke dry quenching body
Use the life-span；
3) during dry coke quenching runs well, the steam that coke dry quenching boiler is produced can generate electricity or heat, in inspection of the boiler and
During boiler tube bursting is overhauled, red burnt heat is not utilized being wasted in vain.
The content of the invention
Do not stop production the method for realizing maintenance the invention provides a kind of coke dry quenching boiler, realizes coke dry quenching boiler turn(a)round
Between dry coke quenching process system do not stop production, its is easy to implement, and can ensure dry coke quenching process system coke dry quenching boiler overhaul during
Operation stability.
In order to achieve the above object, the present invention is realized using following technical scheme：
A kind of coke dry quenching boiler do not stop production realize maintenance method, the coke dry quenching boiler be located at dry coke quenching process system
In, dry coke quenching process system is by being sequentially connected by inertia cycle gas pipe and forms the coke dry quenching furnace of closed-loop system, once remove
Dirt device, coke dry quenching boiler, secondary filter, circulating fan and feed water preheater composition；The method specifically includes following steps：
1) flashboard one is set at the inert gas entrance of coke dry quenching boiler, is set at the inert gas outlet of coke dry quenching boiler
Flashboard two；Direction is circulated along inert gas, the forward and backward inertia cycle gas pipe of coke dry quenching boiler is additionally by bypass pipe
Road is connected, and heat-exchanger rig is set on by-pass line, and the forward and backward two ends of by-pass line set flashboard three and flashboard four respectively；
2) when dry coke quenching process system is normally produced, flashboard three and flashboard four are closed, and heat-exchanger rig is not involved in dry coke quenching life
Produce；It is open mode to keep flashboard one and flashboard two, it is red it is burnt loaded in coke dry quenching furnace by furnace roof charging apparatus, and flow from the bottom to top
Dynamic inert gas heat exchange, the coke after cooling is drained into by coke dry quenching furnace bottom to be transported outward on the burnt belt of fortune；After red burnt heat exchange
Inert gas is recycled by inertia cycle gas pipe, initially enters disposable dust remover dedusting, subsequently into dry coke quenching pot
Stove and boiler heat exchange pipe exchange heat cooling, through secondary filter after, by carrying out reducing temperature twice in circulating fan feeding feed water preheater,
Inert gas after reducing temperature twice reenters coke dry quenching furnace with red burnt heat exchange；
3) when coke dry quenching boiler needs maintenance, coke dry quenching furnace is normally run；Flashboard one and flashboard two are closed, by dry coke quenching pot
Stove is isolated from dry coke quenching process system, can be overhauled after the cooling of coke dry quenching boiler burner hearth；Flashboard three and lock are opened simultaneously
The cooling that exchanged heat in heat-exchanger rig is entered by by-pass line through the inert gas of one-time dedusting after plate four, with red burnt heat exchange, so
After by secondary filter, then by carrying out reducing temperature twice in circulating fan feeding feed water preheater, the indifferent gas after reducing temperature twice
Body reenters coke dry quenching furnace with red burnt heat exchange.
Inert gas can be cooled to 180 ± 20 DEG C by the heat-exchanger rig by 900 ± 50 DEG C.
The heat-exchanger rig is heat exchanger.
Before each flashboard open and close, the rotating speed of circulating fan is first reduced, after recovering former rotating speed again after all flashboard open and close in place.
Compared with prior art, the beneficial effects of the invention are as follows：
1) flashboard and by-pass line are set at coke dry quenching boiler two ends, by-pass line two ends also are provided with flashboard, are matched somebody with somebody using flashboard
Close and open and close, coke dry quenching boiler can be isolated in the dry coke quenching process system of normal operation and be overhauled, disappear
Except overhauling the influence stopped production to dry coke quenching production because of coke dry quenching boiler；
2) during coke dry quenching boiler is overhauled, the inert gas after being exchanged heat in coke dry quenching furnace all imported into heat-exchanger rig and enters
Row heat exchange, it is ensured that heat transfer effect meets the requirement of dry coke quenching production；
3) heat-exchanger rig, a by-pass line and 4 flashboards are increased only in original dry coke quenching process system
Realize, simple structure is easy to implement, be applicable not only to newly-increased dry coke quenching process system, be also applied for existing dry coke quenching technique system
The transformation of system；
4) during coke dry quenching boiler is overhauled, larger temperature will not be produced to become in the production process of dry coke quenching process system
Change, it is ensured that the stable operation of dry coke quenching process system, extend the service life of resistance to material.
Brief description of the drawings
Fig. 1 be coke dry quenching boiler of the present invention do not stop production realize maintenance method schematic.
In figure：1. the circulating fan 6. of 2. disposable dust remover of coke dry quenching furnace, 3. coke dry quenching boiler, 4. secondary filter 5. is given
The flashboard two of 11. flashboard of water preheater 7. heat-exchanger rig, 8. flashboard, 3 9. flashboard, 4 10. by-pass line 1
Specific embodiment
Specific embodiment of the invention is described further below in conjunction with the accompanying drawings：
The method for realizing maintenance as shown in figure 1, a kind of coke dry quenching boiler of the present invention does not stop production, coke dry quenching boiler 3 sets
In dry coke quenching process system, dry coke quenching process system is by being sequentially connected by inertia cycle gas pipe and forms closed-loop system
Coke dry quenching furnace 1, disposable dust remover 2, coke dry quenching boiler 3, secondary filter 4, circulating fan 5 and feed water preheater 6 constitute；The party
Method specifically includes following steps：
1) flashboard 1 is set at the inert gas entrance of coke dry quenching boiler 3, in the inert gas outlet of coke dry quenching boiler
Place sets flashboard 2 12；Direction is circulated along inert gas, the forward and backward inertia cycle gas pipe of coke dry quenching boiler 3 is led in addition
Cross by-pass line 10 to connect, heat-exchanger rig 7 is set on by-pass line 10, the forward and backward two ends of by-pass line 10 set the He of flashboard 38 respectively
Flashboard 49；
2) when dry coke quenching process system is normally produced, flashboard 38 and flashboard 49 are closed, and heat-exchanger rig 7 is not involved in dry coke quenching
Production；It is open mode to keep flashboard 1 and flashboard 2 12, it is red it is burnt loaded in coke dry quenching furnace 1 by furnace roof charging apparatus, with by
Under supreme flowing inert gas heat exchange, coke after cooling drains into by the bottom of coke dry quenching furnace 1 and transported outward on the burnt belt of fortune；With red Jiao
Inert gas after heat exchange is recycled by inertia cycle gas pipe, initially enters the dedusting of disposable dust remover 2, subsequently into
Coke dry quenching boiler 3 and boiler heat exchange pipe exchange heat cooling, through secondary filter 4 after, in sending into feed water preheater 6 by circulating fan 5
Reducing temperature twice is carried out, the inert gas after reducing temperature twice reenters coke dry quenching furnace 1 with red burnt heat exchange；
3) when coke dry quenching boiler 3 needs maintenance, coke dry quenching furnace 1 is normally run；Flashboard 1 and flashboard 2 12 are closed, will be dry
Quenching boiler 3 is isolated from dry coke quenching process system, can be overhauled after the cooling of the burner hearth of coke dry quenching boiler 3；Lock is opened simultaneously
Heat-exchanger rig 7 is entered by by-pass line 10 through the inert gas of one-time dedusting after plate 38 and flashboard 49, with red burnt heat exchange
Interior heat exchange cooling, then through secondary filter 4 after, then carry out reducing temperature twice, two in sending into feed water preheater 6 by circulating fan 5
Inert gas after secondary cooling reenters coke dry quenching furnace 1 with red burnt heat exchange.
Inert gas can be cooled to 180 ± 20 DEG C by the heat-exchanger rig 7 by 900 ± 50 DEG C.
The heat-exchanger rig 7 is heat exchanger.
Before the open and close of each flashboard 8,9,11,12, the rotating speed of circulating fan 5 is first reduced, treat the open and close of all flashboards 8,9,11,12
Recover former rotating speed after in place again.
The above, the only present invention preferably specific embodiment, but protection scope of the present invention is not limited thereto,
Any one skilled in the art the invention discloses technical scope in, technology according to the present invention scheme and its
Inventive concept is subject to equivalent or change, should all be included within the scope of the present invention.
Claims (4)
1. a kind of coke dry quenching boiler does not stop production the method for realizing maintenance, the coke dry quenching boiler in the dry coke quenching process system,
Dry coke quenching process system is by being sequentially connected by inertia cycle gas pipe and forms the coke dry quenching furnace of closed-loop system, one-time dedusting
Device, coke dry quenching boiler, secondary filter, circulating fan and feed water preheater composition；It is characterised in that it includes following steps：
1) flashboard one is set in the inertia recyclegas porch of coke dry quenching boiler, is exported in the inertia recyclegas of coke dry quenching boiler
Place sets flashboard two；Direction is circulated along inert gas, the forward and backward inertia cycle gas pipe of coke dry quenching boiler is additionally by side
Thread a pipe connection, heat-exchanger rig is set on by-pass line, the forward and backward two ends of by-pass line set flashboard three and flashboard four respectively；
2) when dry coke quenching process system is normally produced, flashboard three and flashboard four are closed, and heat-exchanger rig is not involved in dry coke quenching production；Protect
To hold flashboard one and flashboard two be open mode, it is red it is burnt loaded in coke dry quenching furnace by furnace roof charging apparatus, and flow from the bottom to top
Inert gas heat exchange, the coke after cooling is drained into by coke dry quenching furnace bottom to be transported outward on the burnt belt of fortune；With the inertia after red burnt heat exchange
Gas is recycled by inertia cycle gas pipe, initially enters disposable dust remover dedusting, subsequently into coke dry quenching boiler with
Boiler heat exchange pipe heat exchange cooling, through secondary filter after, by circulating fan feeding feed water preheater in carry out reducing temperature twice, it is secondary
Inert gas after cooling reenters coke dry quenching furnace with red burnt heat exchange；
3) when coke dry quenching boiler needs maintenance, coke dry quenching furnace is normally run；Close flashboard one and flashboard two, by coke dry quenching boiler from
Isolate in dry coke quenching process system, can be overhauled after the cooling of coke dry quenching boiler burner hearth；Flashboard three and flashboard four are opened simultaneously,
The cooling that exchanged heat in heat-exchanger rig is entered by by-pass line through the inert gas of one-time dedusting with after red burnt heat exchange, then through two
After secondary deduster, then reducing temperature twice is carried out by circulating fan feeding feed water preheater by circulating, the indifferent gas after reducing temperature twice
Body reenters coke dry quenching furnace with red burnt heat exchange.
2. a kind of coke dry quenching boiler according to claim 1 do not stop production realize maintenance method, it is characterised in that it is described to change
Inert gas can be cooled to 180 ± 20 DEG C by thermal by 900 ± 50 DEG C.
3. a kind of coke dry quenching boiler according to claim 1 do not stop production realize maintenance method, it is characterised in that it is described to change
Hot charging is set to heat exchanger.
4. a kind of coke dry quenching boiler according to claim 1 do not stop production realize maintenance method, it is characterised in that each flashboard
Before open and close, the rotating speed of circulating fan is first reduced, after recovering former rotating speed again after all flashboard open and close in place.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710102594.0A CN106867549B (en) | 2017-02-24 | 2017-02-24 | Method for realizing maintenance of dry quenching boiler without stopping production |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710102594.0A CN106867549B (en) | 2017-02-24 | 2017-02-24 | Method for realizing maintenance of dry quenching boiler without stopping production |
Publications (2)
| Publication Number | Publication Date |
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| CN106867549A true CN106867549A (en) | 2017-06-20 |
| CN106867549B CN106867549B (en) | 2022-10-18 |
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| CN201710102594.0A Active CN106867549B (en) | 2017-02-24 | 2017-02-24 | Method for realizing maintenance of dry quenching boiler without stopping production |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108624339A (en) * | 2018-05-11 | 2018-10-09 | 鞍钢股份有限公司 | Winter dry quenching furnace annual repair heat preservation 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 |
| CN112694899A (en) * | 2020-12-16 | 2021-04-23 | 安徽东能换热装备有限公司 | Dry quenching self-adaptive water supply preheating system and method |
| CN112780364A (en) * | 2021-01-19 | 2021-05-11 | 山西太钢不锈钢股份有限公司 | Method for prolonging running time of dry quenching steam turbine generator |
| CN113773866A (en) * | 2020-06-09 | 2021-12-10 | 瑞安市阀门一厂 | Air inlet closed-circuit system of dry quenching furnace |
| CN113930250A (en) * | 2021-10-15 | 2022-01-14 | 包头钢铁（集团）有限责任公司 | Method for preventing damage of superheater of dry quenching boiler |
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| CA2806649A1 (en) * | 2009-07-31 | 2011-02-03 | Curtiss-Wright Flow Control Corporation | Seat and valve systems for use in delayed coker system |
| CN102424754A (en) * | 2011-10-20 | 2012-04-25 | 山东道诚工程技术有限公司 | Dry quenching device |
| CN203741268U (en) * | 2014-03-07 | 2014-07-30 | 北京华泰焦化工程技术有限公司 | Dry quenching equipment |
| CN104327864A (en) * | 2014-11-15 | 2015-02-04 | 马钢(集团)控股有限公司 | Cooling system and cooling method of recycle gas in inlet of coke dry quenching furnace |
| CN205347323U (en) * | 2015-12-15 | 2016-06-29 | 福建三钢闽光股份有限公司 | Coke oven crude gas sensible heat recovery system that does not stop production and to examine and repair steam pocket |
| CN106433700A (en) * | 2016-11-11 | 2017-02-22 | 中冶焦耐(大连)工程技术有限公司 | Coke dry quenching dust removal system and process capable of efficiently recovering heat energy |
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Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CA2806649A1 (en) * | 2009-07-31 | 2011-02-03 | Curtiss-Wright Flow Control Corporation | Seat and valve systems for use in delayed coker system |
| CN102424754A (en) * | 2011-10-20 | 2012-04-25 | 山东道诚工程技术有限公司 | Dry quenching device |
| CN203741268U (en) * | 2014-03-07 | 2014-07-30 | 北京华泰焦化工程技术有限公司 | Dry quenching equipment |
| CN104327864A (en) * | 2014-11-15 | 2015-02-04 | 马钢(集团)控股有限公司 | Cooling system and cooling method of recycle gas in inlet of coke dry quenching furnace |
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| CN106433700A (en) * | 2016-11-11 | 2017-02-22 | 中冶焦耐(大连)工程技术有限公司 | Coke dry quenching dust removal system and process capable of efficiently recovering heat energy |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108624339A (en) * | 2018-05-11 | 2018-10-09 | 鞍钢股份有限公司 | Winter dry quenching furnace annual repair heat preservation 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 |
| 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 |
| CN113773866A (en) * | 2020-06-09 | 2021-12-10 | 瑞安市阀门一厂 | Air inlet closed-circuit system of dry quenching furnace |
| CN112694899A (en) * | 2020-12-16 | 2021-04-23 | 安徽东能换热装备有限公司 | Dry quenching self-adaptive water supply preheating system and method |
| CN112780364A (en) * | 2021-01-19 | 2021-05-11 | 山西太钢不锈钢股份有限公司 | Method for prolonging running time of dry quenching steam turbine generator |
| CN113930250A (en) * | 2021-10-15 | 2022-01-14 | 包头钢铁（集团）有限责任公司 | Method for preventing damage of superheater of dry quenching boiler |
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| Publication number | Publication date |
|---|---|
| CN106867549B (en) | 2022-10-18 |
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