CN104479697A - Treatment method for material jamming of rotating seal valve of dry quenching furnace - Google Patents
Treatment method for material jamming of rotating seal valve of dry quenching furnace Download PDFInfo
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- CN104479697A CN104479697A CN201410746672.7A CN201410746672A CN104479697A CN 104479697 A CN104479697 A CN 104479697A CN 201410746672 A CN201410746672 A CN 201410746672A CN 104479697 A CN104479697 A CN 104479697A
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- seal valve
- rotary seal
- stuck
- dry quenching
- quenching furnace
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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
- C10B41/00—Safety devices, e.g. signalling or controlling devices for use in the discharge of coke
-
- 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
- C10B43/00—Preventing or removing incrustations
- C10B43/02—Removing incrustations
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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
The invention discloses a treatment method for material jamming of a rotating seal valve of a dry quenching furnace, and belongs to the technical field of repair and maintenance of metallurgical production equipment. The treatment method for material jamming of the rotating seal valve of the dry quenching furnace is capable of safely and rapidly cleaning jamming foreign matters of the rotating seal valve. According to the treatment method, jamming obstacles are treated by adopting a method of firstly preparing obstacle cleaning equipment, inspecting safety protection equipment, determining the jamming position and cleaning the jamming. In the treatment process, methods for forward and reverse alternating point dynamic treatment for a plurality of times or artificial treatment by opening a manhole cover are respectively adopted according to different working conditions; before artificial treatment of operating personnel, firstly, poisonous and harmful gases are diluted and exhausted through an exhaust fan, the operating personnel put on protection equipment, and the foreign matters jammed in the rotating seal valve can be cleared away by virtue of a steel bar and/or an iron hasp.
Description
Technical field
The present invention relates to a kind for the treatment of process, especially relate to a kind for the treatment of process got stuck for coke dry quenching furnace rotary seal valve, belong to metallurgical production maintenance of equipment maintenance technology field.
Background technology
So-called dry coke quenching, relative coke wet quenching, refers to and adopts rare gas element by a kind of coke quenching method of red burnt cooling down.In dry coke quenching process, red Jiao loads from dry furnace roof portion of putting out, cryogenic inert gas is blasted by recirculation blower and dryly puts out in the red focus layer of stove cooling section, absorb red burnt heat, cooled coke is discharged from the dry furnace bottom that puts out, and flows through coke dry quenching boiler carry out heat exchange, boiler develops steam vapor from dry annular flue high temperature inert gas out of putting out, cooled rare gas element is again blasted by recirculation blower and dryly puts out stove, and rare gas element uses at the system internal recycle closed.Dry coke quenching is in energy-saving and environmental protection and improve in coke quality etc. and be better than coke wet quenching.
Rotary seal valve is the important component part in the cold burnt device for transferring unit of dry coke quenching, be positioned at and dryly put out furnace bottom, Main Function is: when ensure dry put out stove internal recycle gas not to stove outward leakage, the cooled coke of quantitatively being discharged by vibratory feeder is discharged continuously.
When dry put out in stove enter foreign matter time, in the process of discharging after the cooling period, because gap is little between rotary seal valve blade and housing, easily by stuck vane, rotary seal valve is shut down.If can not recover normal coke discharging at short notice, dry coke quenching auxiliary cannot carry out normal dress Jiao and heat exchange work, cause steam quality to worsen; subsequent handling halt turbines; boiler systems decrease temperature and pressure and steam releasing, while having a strong impact on production, also cause mass energy to waste.
Rotary seal valve is in the malleation section of dry quenched coke gas circulating system, and in production process, have a large amount of recycle gas and enter in people's rotary seal valve and discharging device for coke, when opening top manhole, recycle gas will be overflowed from manhole.Owing to containing CO, H in dry coke quenching recycle gas
2the nitrogen of the hazardous and noxious substances such as S, oxynitride and high density, if do not take corresponding sfgd. will cause personal injury to operator, even threat to life safety.
Summary of the invention
Technical problem to be solved by this invention is: provide a kind of energy safety, fast to the treatment process got stuck for coke dry quenching furnace rotary seal valve that the jam foreign matter of rotary seal valve is cleared up.
For solving the problems of the technologies described above adopted technical scheme be: a kind for the treatment of process for getting stuck in coke dry quenching furnace rotary seal valve, comprises the following steps,
The preparation of a, equipment and inspection, comprise based on the preparation of the equipment of removing obstacles of drill rod, cleek with based on the inspection of the safety precaution of air respiratorresuscitator, exhaust blower, toxic gas alarm equipment,
Wherein, the following test holding the inspection of continuing property and toxic gas alarm after the intact degree inspection of air respiratorresuscitator, exhaust blower startup is comprised to the inspection of air respiratorresuscitator, exhaust blower, toxic gas alarm;
B, determine the position that gets stuck, on the basis of listening attentively to equipment abnormal sound, to get stuck location of fault with the determination of opening middle part, the order of top manhole plate is discharged from lower to upper one by one;
C, get stuck process, carries out in the steps below,
When get stuck less and occur in described rotary seal valve time, the trip switch of described rotary seal valve is adjusted at " scene ", adopt the mode of on-the-spot crawl to carry out repeatedly the alternately crawl of forward and backward, the foreign matter of jam in described rotary seal valve can be discharged fast
When getting stuck comparatively greatly or occurring in described rotary seal valve middle and upper part, first exhaust blower, toxic gas alarm is started, and get out the air respiratorresuscitator of passed examination, then the manhole plate of described rotary seal valve middle and upper part is opened, obtain after dilution until toxic gas, operator dress the safety guard based on air respiratorresuscitator, utilize drill rod and/or cleek to remove the foreign matter of jam in described rotary seal valve respectively, complete the work for the treatment of got stuck in a rotary seal valve
Wherein, the work of position of determining to get stuck adopts limit to determine that the mode removed on limit, position is carried out,
When the position that gets stuck is positioned at the middle and upper part of the rotary seal valve of described coke dry quenching furnace, first reduce recirculation blower rotating speed to the slow speed of revolution by the master control system of described coke dry quenching furnace, then close bulkhgead gate and open the manhole plate of rotary seal valve middle and upper part, then equipment of removing obstacles is adopted to remove the foreign matter of jam in described rotary seal valve middle and upper part, finally close manhole plate, then by described master control system, air circulation is returned to normal speed.
The invention has the beneficial effects as follows: by the equipment that first prepares to remove obstacles, check and protective gear is installed, and then adopt limit to determine method that limit, jam position processes hinders to hold back to the jam in rotary seal valve and processes.Due in the process of removing obstacles, adopt repeatedly the alternately crawl of forward and backward respectively according to different operating modes or open manhole plate and adopt labor cleaning, and after first harmful recycle gas being diluted by described exhaust blower before operator carry out labor cleaning, operator have dressed protective gear again, drill rod and/or cleek is utilized to remove the foreign matter of jam in described rotary seal valve respectively, both ensure to remove obstacles safe while, in turn ensure that the normal operation of production system, to production, there is larger promotion.On the basis of listening attentively to equipment abnormal sound, to open middle part, the order determination of discharging one by one from lower to upper of top manhole plate gets stuck location of fault, and carry out clearing up while determining position, effectively improving the speed of removing obstacles, reducing rotary seal valve jam to greatest extent to producing the negative impact brought.
Be further, when opening the manhole plate of middle and upper part, adopt interval to remove manhole bolt to stop to every limit residue 1 ~ 2 two bolt, after the toxic gas content reduction that toxic gas alarm monitors, dressed air respiratorresuscitator remove remaining bolt again and open described manhole plate completely.
Further, described toxic gas alarm comprises carbonic oxide alarm and oxygen alarm.
Further, before operator open rotary seal valve middle and upper part manhole, the described protective gear of wearing at least comprises air respiratorresuscitator, proximity suit and proximity gloves.
Further, after the manhole plate opening middle part, when accumulation in rotary seal valve has a large amount of coke, take out by being sorted out by coke the putty process that namely institute's card object can complete bottom chute.
Embodiment
Often jam is there is in order to solve the coke dry quenching furnace rotary seal valve existed in prior art, having a strong impact on the phenomenon of production, the invention provides a kind of energy safety, fast to the treatment process for getting stuck in coke dry quenching furnace rotary seal valve that the jam foreign matter of rotary seal valve is cleared up.Described treatment process comprises the following steps, and comprises the following steps,
The preparation of a, equipment and inspection, comprise based on the preparation of the equipment of removing obstacles of drill rod, cleek with based on the inspection of the safety precaution of air respiratorresuscitator, exhaust blower, toxic gas alarm equipment,
Wherein, the following test holding the inspection of continuing property and toxic gas alarm after the intact degree inspection of air respiratorresuscitator, exhaust blower startup is comprised to the inspection of air respiratorresuscitator, exhaust blower, toxic gas alarm;
B, determine the position that gets stuck, on the basis of listening attentively to equipment abnormal sound, to get stuck location of fault with the determination of opening middle part, the order of top manhole plate is discharged from lower to upper one by one;
C, get stuck process, carries out in the steps below,
When get stuck less and occur in described rotary seal valve time, the trip switch of described rotary seal valve is adjusted at " scene ", adopt the mode of on-the-spot crawl to carry out repeatedly the alternately crawl of forward and backward, the foreign matter of jam in described rotary seal valve can be discharged fast
When getting stuck comparatively greatly or occurring in described rotary seal valve middle and upper part, first exhaust blower, toxic gas alarm is started, and get out the air respiratorresuscitator of passed examination, then the manhole plate of described rotary seal valve middle and upper part is opened, obtain after dilution until toxic gas, operator dress the safety guard based on air respiratorresuscitator, utilize drill rod and/or cleek to remove the foreign matter of jam in described rotary seal valve respectively, complete the work for the treatment of got stuck in a rotary seal valve
Wherein, the work of position of determining to get stuck adopts limit to determine that the mode removed on limit, position is carried out,
When the position that gets stuck is positioned at the middle and upper part of the rotary seal valve of described coke dry quenching furnace, first reduce recirculation blower rotating speed to the slow speed of revolution by the master control system of described coke dry quenching furnace, then close bulkhgead gate and open the manhole plate of rotary seal valve middle and upper part, then equipment of removing obstacles is adopted to remove the foreign matter of jam in described rotary seal valve middle and upper part, finally close manhole plate, then by described master control system, air circulation is returned to normal speed.
By the equipment that first prepares to remove obstacles, check and protective gear is installed, and then adopt limit to determine method that limit, jam position processes hinders to hold back to the jam in rotary seal valve and processes.Due in the process of removing obstacles, adopt repeatedly the alternately crawl of forward and backward respectively according to different operating modes or open manhole plate and adopt labor cleaning, and after first harmful recycle gas being diluted by described exhaust blower before operator carry out labor cleaning, operator have dressed protective gear again, drill rod and/or cleek is utilized to remove the foreign matter of jam in described rotary seal valve respectively, both ensure to remove obstacles safe while, in turn ensure that the normal operation of production system, to production, there is larger promotion.On the basis of listening attentively to equipment abnormal sound, to open middle part, the order determination of discharging one by one from lower to upper of top manhole plate gets stuck location of fault, and carry out clearing up while determining position, effectively improving the speed of removing obstacles, reducing rotary seal valve jam to greatest extent to producing the negative impact brought.
In above-mentioned embodiment, in order to avoid the toxic gas personnel that cause of leaking in a large number when manhole plate is opened hinder dead accident, carry out Macrodilution by exhaust blower.Simultaneously, when opening the manhole plate of middle and upper part, adopt interval to remove manhole bolt to stop to every limit residue 1 ~ 2 two bolt, after the toxic gas content reduction that toxic gas alarm monitors, dressed air respiratorresuscitator remove remaining bolt again and open described manhole plate completely; And described toxic gas alarm comprises carbonic oxide alarm and oxygen alarm; And in order to ensure the operational safety of the personnel of removing obstacles, before operator open rotary seal valve middle and upper part manhole, the described protective gear of wearing at least comprises air respiratorresuscitator, proximity suit and proximity gloves.Meanwhile, according to actual condition, after the manhole plate opening middle part, when accumulation in rotary seal valve has a large amount of coke, take out by being sorted out by coke the putty process that namely institute's card object can complete bottom chute.
In process of production, rotary seal valve gets stuck is inevitably equipment failure during dry coke quenching is produced.In the process of process, face larger security risk, so process rotary seal valve gets stuck first must will ensure the safety of field staff, the prerequisite reducing recirculation blower rotating speed to keep dry coke quenching operating mode, ensures that coke dry quenching boiler steam has good quality.Under the prerequisite that operating mode is permitted, recirculation blower rotating speed is down to the limit when still can not reach the condition opening rotary seal valve top manhole, suggestion stops recirculation blower process to get stuck, when opening rotary seal valve top manhole, due to narrow field, personnel's erect-position situation is noted during use instrument, treatment people 2 ~ 3 is enough, and everyone must wear CO alarm and air respiratorresuscitator, just can be discharged by rotating if foreign matter is less than normal, by this foreign body, otherwise the risk scratching belt or blocking belt chute must be had.
Prevention rotary seal valve gets stuck and mainly prevents entering of ironware and graphite, also not have effectively practical method at present from technology, equipment, can only from the management of reinforcement dry quenching system and last process.Main manifestations has lower several aspect:
1, strengthen burnt tank, the maintenance of charging apparatus and spot check, prevent liner plate from entering and dryly put out stove;
2, in coking process production management, if prevent the device etc. of instrument, graphite, locomotive main pushing machine, coke guide, coal charger from entering coking chamber or burnt tank, if find that ironware etc. enters coking chamber when coalingging, should record in time, carry out wetting to this coking chamber and put out operation, as found in coke-pushing process, ironware enters coking chamber, should stop immediately dryly putting out operation and changing into and wet put out operation;
3, when ironware etc. has entered burnt tank in coke-pushing process, dry quenching system should be notified in time, so as dry quenching system to be sorted out or according to ironware entry time, estimate its efflux time, for process jam is ready, reduce the impact on producing as far as possible;
4, corresponding management department formulates rotary sealing valve in coke dry quenching and to get stuck emergency preplan, requires that post personnel are familiar with grasping this prediction scheme, will the treatment time be down to the shortest;
5, on-the-spot Emergency Tool should be placed on specified location, if there is emergency situation to occur, the emergency equipment very first time can prepare to put in place.
Claims (5)
1. for the treatment process that coke dry quenching furnace rotary seal valve gets stuck, it is characterized in that: comprise the following steps,
The preparation of a, equipment and inspection, comprise based on the preparation of the equipment of removing obstacles of drill rod, cleek with based on the inspection of the safety precaution of air respiratorresuscitator, exhaust blower, toxic gas alarm equipment,
Wherein, the following test holding the inspection of continuing property and toxic gas alarm after the intact degree inspection of air respiratorresuscitator, exhaust blower startup is comprised to the inspection of air respiratorresuscitator, exhaust blower, toxic gas alarm;
B, determine the position that gets stuck, on the basis of listening attentively to equipment abnormal sound, to get stuck location of fault with the determination of opening middle part, the order of top manhole plate is discharged from lower to upper one by one;
C, get stuck process, carries out in the steps below,
When get stuck less and occur in described rotary seal valve time, the trip switch of described rotary seal valve is adjusted at " scene ", adopt the mode of on-the-spot crawl to carry out repeatedly the alternately crawl of forward and backward, the foreign matter of jam in described rotary seal valve can be discharged fast
When getting stuck comparatively greatly or occurring in described rotary seal valve middle and upper part, first exhaust blower, toxic gas alarm is started, and get out the air respiratorresuscitator of passed examination, then the manhole plate of described rotary seal valve middle and upper part is opened, obtain after dilution until toxic gas, operator dress the safety guard based on air respiratorresuscitator, utilize drill rod and/or cleek to remove the foreign matter of jam in described rotary seal valve respectively, complete the work for the treatment of got stuck in a rotary seal valve
Wherein, the work of position of determining to get stuck adopts limit to determine that the mode removed on limit, position is carried out,
When the position that gets stuck is positioned at the middle and upper part of the rotary seal valve of described coke dry quenching furnace, first reduce recirculation blower rotating speed to the slow speed of revolution by the master control system of described coke dry quenching furnace, then close bulkhgead gate and open the manhole plate of rotary seal valve middle and upper part, then equipment of removing obstacles is adopted to remove the foreign matter of jam in described rotary seal valve middle and upper part, finally close manhole plate, then by described master control system, air circulation is returned to normal speed.
2. the treatment process got stuck for coke dry quenching furnace rotary seal valve according to claim 1, it is characterized in that: when opening the manhole plate of middle and upper part, adopt interval to remove manhole bolt to stop to every limit residue 1 ~ 2 two bolt, after the toxic gas content reduction that toxic gas alarm monitors, dressed air respiratorresuscitator remove remaining bolt again and open described manhole plate completely.
3. the treatment process got stuck for coke dry quenching furnace rotary seal valve according to claim 1, is characterized in that: described toxic gas alarm comprises carbonic oxide alarm and oxygen alarm.
4. the treatment process got stuck for coke dry quenching furnace rotary seal valve according to claim 3, it is characterized in that: before operator open rotary seal valve middle and upper part manhole, the described protective gear of wearing at least comprises air respiratorresuscitator, proximity suit and proximity gloves.
5. the treatment process got stuck for coke dry quenching furnace rotary seal valve according to claim 1, it is characterized in that: after the manhole plate opening middle part, when accumulation in rotary seal valve has a large amount of coke, take out by being sorted out by coke the putty process that namely institute's card object can complete bottom chute.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410746672.7A CN104479697A (en) | 2014-12-09 | 2014-12-09 | Treatment method for material jamming of rotating seal valve of dry quenching furnace |
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| CN201410746672.7A CN104479697A (en) | 2014-12-09 | 2014-12-09 | Treatment method for material jamming of rotating seal valve of dry quenching furnace |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111569529A (en) * | 2020-04-20 | 2020-08-25 | 包头钢铁（集团）有限责任公司 | Method for rapidly processing faults of dry quenching discharge device |
| CN113403091A (en) * | 2021-05-21 | 2021-09-17 | 五冶集团上海有限公司 | Method for online blocking blowby of vault masonry of primary coke dry quenching dust remover |
| CN113736493A (en) * | 2020-05-30 | 2021-12-03 | 上海梅山钢铁股份有限公司 | Coke pot lining plate detection device based on ohm law |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111569529A (en) * | 2020-04-20 | 2020-08-25 | 包头钢铁（集团）有限责任公司 | Method for rapidly processing faults of dry quenching discharge device |
| CN113736493A (en) * | 2020-05-30 | 2021-12-03 | 上海梅山钢铁股份有限公司 | Coke pot lining plate detection device based on ohm law |
| CN113736493B (en) * | 2020-05-30 | 2022-06-14 | 上海梅山钢铁股份有限公司 | Coke pot lining plate detection device based on ohm law |
| CN113403091A (en) * | 2021-05-21 | 2021-09-17 | 五冶集团上海有限公司 | Method for online blocking blowby of vault masonry of primary coke dry quenching dust remover |
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Application publication date: 20150401 |