CN101144747B - Coke dry quenching all-system dynamic air tight test method - Google Patents
Coke dry quenching all-system dynamic air tight test method Download PDFInfo
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- CN101144747B CN101144747B CN2007100479798A CN200710047979A CN101144747B CN 101144747 B CN101144747 B CN 101144747B CN 2007100479798 A CN2007100479798 A CN 2007100479798A CN 200710047979 A CN200710047979 A CN 200710047979A CN 101144747 B CN101144747 B CN 101144747B
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Abstract
The invention discloses a dynamic air tightness test method of a dry cooling entire system. The dynamic air tightness test method is performed in the following procedures that: the valve of the dry cooling entire system is closed; each natural weep point of the dry cooling entire system is sealed off; a pressure meter is installed on a pipeline of an air outtake of a circular fan; the running of the circular fan is started, the rotating speed of the circular fan is adjusted and plugboard valves on two sides of an air suction opening of the circular fan are turned on in sequence to keep the pressure of the dry cooling entire system in a specific range; a foaming agent is sprayed on the welding line and the flange connecting point of the dry cooling entire system, and if any leakage happens, the mark is labeled; for the flange leakage, the flange connecting bolt can be fixed through spinning, and for the welding line leakage, the treatment is taken after the fan is turned off; after the leakage treatment is finished, the circular fan is turned on again to take an inspection, and circled until no leakage happens. The dynamic air tightness test method of the invention has simple operation, takes short time, saves a large mount of labor force and resources, reduces the construction cost, and improves the construction efficiency.
Description
Technical field
The present invention relates to a kind of dry coke quenching total system airtightness testing method.
Background technology
Quenching is the important step in the coking process, coal is after carbonization chamber is smelt coke, should in time release from carbonization chamber, temperature was about 1000 ℃ when red Jiao released, for avoiding the coke burning, and be convenient to transportation and storage, and can not directly coke be sent to blast furnace ironmaking, red burnt temperature must be reduced to below 300 ℃.Dry coke quenching is meant and adopts a kind of coke quenching method of inert gas with red burnt cooling cooling.
The dry coke quenching total system comprises the gas-circulating system of being made up of quenching stove, boiler, disposable dust remover, secondary filter, feed water preheater and cycle gas pipe.This system is that red Jiao packs into, cold Jiao discharges and inert gas circulates, the interval of filling.Under the production run state, import valve except that normal open raw edge, air in this interval and pack into, the escape hole, should be a confined space.Finish in the dry coke quenching engineering and must carry out dry coke quenching total system air-tight test before being delivered for use, its objective is to check whether all weld seams and flange joint face leak, find to leak the operation of just putting into production after taking measures thoroughly to handle well as checking.
But the system-wide design feature of dry coke quenching is:
1) bulky, the about 6000-7000m in system gas filling space
3
2) irregular structure;
3) the natural leak point that allows of system is many, and system requirements is airtight, but system itself is not a closed system, often open raw edge, air importing valve and pack into, escape hole etc. do not seal under the production run state.
Therefore, for dry coke quenching total system air-tight test, existing test method normally adopts " static pressurize method ", referring to Fig. 1, it is airtight with the dry coke quenching total system to take measures exactly, blasts air with air compressor machine in system, according to relevant standard, keep the regular hour under certain pressure, whether the pressure of detection system falls and comes the decision-making system impermeability qualified within the specific limits.This test method need increase that interim air machinery---air compressor machine is air blast in system, must take a large amount of measures that normal open raw edge, air are imported valve and pack into, natural leak point such as escape hole carries out tight shutoff, the air quantity that leaks is to leak or leak and can't judge from weld seam, flange junction from natural leak source, no clear and definite standard is judged in pressure drop, need to consume great amount of manpower and material resources, financial resources, the enforcement time is long, and effect is not clearly.
Summary of the invention
The object of the present invention is to provide a kind of coke dry quenching all-system dynamic air tight test method, this test method is simple to operate, and the time is short, can save a large amount of man power and materials, reduces construction cost, improves operating efficiency.
The present invention is achieved in that a kind of coke dry quenching all-system dynamic air tight test method, follows these steps to carry out:
1) closes the system-wide valve of dry coke quenching;
2) carry out shutoff at system-wide each the natural leakage point of dry coke quenching;
3) on the pipeline of circulating fan air outlet, load onto tensimeter or pressure gauge;
4) open circulating fan air outlet valve, full cut-off circulating fan air intake valve and push-pull valve; Start the circulating fan running, regulate the circulating fan rotating speed and the push-pull valve of both sides, ON cycle blower fan inlet scoop progressively, make in the dry coke quenching total system the pressure maintenance within the specific limits;
5) meet and flange connecting point eruption infusion in the system-wide weldering of dry coke quenching,, do mark if any leakage; Can spinning clamp flange coupling bolt for flange leakage, for weld leakage, treat to handle after blower fan is shut down;
6) after leakage point disposes again the open cycle blower fan check that moving in circles like this to proceed to does not have till the leakage point.
Describedly on the manhole of both sides, blower fan inlet scoop, safety guard net is set, and then interim adjusting push-pull valve is set, be used to regulate air quantity with woven wire.
Test pressure scope in the described dry coke quenching total system is 3500Pa～4000Pa.
System-wide each the natural leakage point of described dry coke quenching carries out shutoff and comprises: with the good soft packing filling of parcel, close bell then and push down filler in the quenching stove fire door water sealed tank; Prestoring, water-sealed valve is diffused in the chamber, one-time dedusting diffuses water-sealed valve and all carries out shutoff with soft packing.
Coke dry quenching all-system dynamic air tight test method of the present invention is according to the system-wide design feature of dry coke quenching, take general shutoff, allow certain inleakage, and utilize intrasystem circulating fan constantly in system, to blow, make the difference of air output and inleakage keep certain pressure, under this pressure state, the eruption infusion is tested on weld seam, flange composition surface, as not rousing steam bubble, it is qualified to be judged to be dry coke quenching total system impermeability.The present invention compared with prior art, it has following good effect:
1) test operation is simple, and test effect can satisfy the production run requirement, can guarantee the normal operation of producing;
2) need not take tight shutoff for system's natural leak point, only need carry out general shutoff,, save a large amount of man power and materials, reduce construction cost to reduce inleakage as far as possible;
3) do not need to set up interim wind regime equipment, utilize the circulating fan of system itself, simple to operate, safety is saved construction cost;
4) test effect is direct, obvious, and the time is short, than the time of 1～2 times of " static pressurize method " saving, has improved operating efficiency and benefit.
Description of drawings
Fig. 1 is existing static pressurize method air-tight test process flow diagram;
Fig. 2 is a coke dry quenching all-system dynamic air tight test method synoptic diagram of the present invention.
Embodiment
The invention will be further described below in conjunction with the drawings and specific embodiments.
Referring to Fig. 2, a kind of coke dry quenching all-system dynamic air tight test method is to follow these steps to carry out:
1) closes the system-wide valve of dry coke quenching, comprise that closing urgent gas diffuses the dull and stereotyped valve 3 of stop valve 1, first and second fly-ash separator bottom push-pull valve 2, discharger, furnace roof by-pass valve, boiler top and diffuse valve, air leading-in conduit stop valve etc.Each section of quenching stove top short tube flange, promptly air quantity profile adjustment brick handle hole is not twist bolt during production, only need cover closure plate, generally tightens nut and gets final product to keep system's blast.
2) carry out shutoff at system-wide each the natural leakage point of dry coke quenching, with the good soft packing filling of parcel, close bell then and push down filler in the quenching stove fire door water sealed tank 4; Prestoring, water-sealed valve is diffused in the chamber, one-time dedusting diffuses water-sealed valve and all carries out shutoff with soft packing.Soft packing comprises flexible materials such as soft cloth material.
3) load onto U-shaped water barometer 5 on the pipeline of circulating fan air outlet, quenching stove position utilizes the rain glass of equipment own, and the air pressure in the dry coke quenching total system is measured, monitored.
4) open circulating cooling water pipe and N
2Tube valve water supply air feed; Open circulating fan air outlet valve, full cut-off circulating fan air intake valve and manhole push-pull valve; Start the circulating fan running, regulate the circulating fan rotating speed and the push-pull valve of both sides, ON cycle blower fan inlet scoop progressively, make the interior pressure limit of dry coke quenching total system remain on 3500Pa～4000Pa.The blower fan inlet scoop utilizes blower fan both sides manhole 6, opens manhole cover, with woven wire safety guard net is set on manhole, prevents that foreign matter from sucking blower fan, and then interim adjusting push-pull valve is set, and is used to regulate air quantity.
5) meet and flange connecting point eruption infusion in the system-wide weldering of dry coke quenching,, do mark if any leakage; Can spinning clamp flange coupling bolt for flange leakage, for weld leakage, treat to handle after blower fan is shut down.
6) after leakage point disposes again the open cycle blower fan check that moving in circles like this to proceed to does not have till the leakage point.
Test method of the present invention is simple to operate, and the time is short, can save a large amount of man power and materials, reduces construction cost, improves operating efficiency, and test effect can satisfy the production run requirement, guarantees the normal operation of producing.
Claims (2)
1. coke dry quenching all-system dynamic air tight test method is characterized in that: follow these steps to carry out:
1) closes the system-wide valve of dry coke quenching;
2) carry out shutoff at system-wide each the natural leakage point of dry coke quenching;
3) on the pipeline of circulating fan air outlet, load onto tensimeter or pressure gauge;
4) on the manhole of both sides, blower fan inlet scoop, safety guard net is set, and then interim adjusting push-pull valve is set, be used to regulate air quantity with woven wire; Open circulating fan air outlet valve, full cut-off circulating fan air intake valve and push-pull valve; Start the circulating fan running, regulate the circulating fan rotating speed and the push-pull valve of both sides, ON cycle blower fan inlet scoop progressively, make the interior pressure limit of dry coke quenching total system remain on 3500Pa～4000Pa;
5) at system-wide weld seam of dry coke quenching and flange connecting point eruption infusion,, do mark if any leakage; For flange leakage spinning clamp flange coupling bolt,, treat to handle after blower fan is shut down for weld leakage;
6) after leakage point disposes again the open cycle blower fan check that moving in circles like this to proceed to does not have till the leakage point.
2. coke dry quenching all-system dynamic air tight test method according to claim 1, it is characterized in that: system-wide each the natural leakage point of dry coke quenching carries out shutoff and comprises: with the good soft packing filling of parcel, close bell then and push down filler in the quenching stove fire door water sealed tank; Prestoring, water-sealed valve is diffused in the chamber, one-time dedusting diffuses water-sealed valve and all carries out shutoff with soft packing.
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| Application Number | Priority Date | Filing Date | Title |
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| CN2007100479798A CN101144747B (en) | 2007-11-08 | 2007-11-08 | Coke dry quenching all-system dynamic air tight test method |
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| CN2007100479798A CN101144747B (en) | 2007-11-08 | 2007-11-08 | Coke dry quenching all-system dynamic air tight test method |
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| CN101144747B true CN101144747B (en) | 2010-08-18 |
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| CN101928573A (en) * | 2009-06-19 | 2010-12-29 | 中冶成工上海五冶建设有限公司 | Test run method of dry quenching mechanical equipment |
| CN101931172B (en) * | 2009-06-19 | 2012-09-05 | 五冶集团上海有限公司 | Electric debugging method of dry-quenching power distribution system |
| CN101799352B (en) * | 2010-03-04 | 2011-11-09 | 南京钢铁股份有限公司 | Online and rapid leakage detecting method for roller hearth type non-oxidation furnace radiating pipe |
| CN102183154B (en) * | 2011-03-23 | 2013-07-10 | 宝钢工程技术集团有限公司 | Device and method for recovering afterheat during red hot pellet cooling of rotary hearth furnace |
| CN102936506B (en) * | 2011-08-15 | 2014-04-02 | 北京华泰焦化工程技术有限公司 | Coke powder heat recovery unit-containing coke dry quenching device |
| CN102435400B (en) * | 2011-09-19 | 2014-02-26 | 武汉工程大学 | Bidirectional sealing performance test method of mechanical vibrator |
| CN103257019B (en) * | 2013-04-15 | 2015-11-18 | 中信重工机械股份有限公司 | A kind of air-tightness detection method of sintering deposit stove formula cooling residual heat recovery system |
| CN103788965B (en) * | 2013-12-06 | 2015-06-17 | 攀钢集团攀枝花钢钒有限公司 | Quick leak stop method for water seal tank of dry quenching furnace |
| CN105273729A (en) * | 2014-07-07 | 2016-01-27 | 新日铁住金工程技术株式会社 | Dry quenching apparatus |
| CN104190197B (en) * | 2014-08-27 | 2015-09-23 | 中冶焦耐工程技术有限公司 | Coke wet quenching tower top loss waste gas purification apparatus and process for purifying |
| CN104893744B (en) * | 2015-05-27 | 2017-03-15 | 济钢集团国际工程技术有限公司 | A kind of dry coke quenching furnace roof bleeding device |
| CN105925279B (en) * | 2016-06-30 | 2018-12-28 | 中国重型机械研究院股份公司 | A kind of high temperature coke breeze organic heat carrier exhaust heat recovering method |
| CN106595974B (en) * | 2016-08-22 | 2019-01-15 | 上海二十冶建设有限公司 | The air-tightness detection method of active carbon flue gas purification device |
| CA3061184A1 (en) * | 2017-03-27 | 2018-10-04 | Scanship As | Microwave pyrolysis reactor |
| CN107737495A (en) * | 2017-11-14 | 2018-02-27 | 合肥合意环保机电装备制造有限公司 | A kind of exhaust dust device with bag method for conducting leak test |
| CN112484930B (en) * | 2020-12-21 | 2022-11-15 | 山东钢铁集团日照有限公司 | Method for testing air tightness of blast furnace before blow-in |
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Effective date of registration: 20101103 Address after: 610063 Jinjiang District Industrial Park, Sichuan, Chengdu Co-patentee after: Shanghai Wuye Construction Of Zhongye Chenggong Co.Ltd Patentee after: China MCC5 Group Corp., Ltd. Address before: 201900 Shanghai city Baoshan District Tieli Road No. 2501 Patentee before: Shanghai Wuye Construction Of Zhongye Chenggong Co.Ltd |
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Address after: 610063 Jinjiang District Industrial Park, Sichuan, Chengdu Co-patentee after: MCC5 Group Corporation Limited (Shanghai) Patentee after: China MCC5 Group Corp., Ltd. Address before: 610063 Jinjiang District Industrial Park, Sichuan, Chengdu Co-patentee before: Shanghai Wuye Construction Of Zhongye Chenggong Co.Ltd Patentee before: China MCC5 Group Corp., Ltd. |