CN103740380B - A kind of heatingup of coke oven battery technique - Google Patents
A kind of heatingup of coke oven battery technique Download PDFInfo
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- CN103740380B CN103740380B CN201310752704.XA CN201310752704A CN103740380B CN 103740380 B CN103740380 B CN 103740380B CN 201310752704 A CN201310752704 A CN 201310752704A CN 103740380 B CN103740380 B CN 103740380B
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Abstract
The invention provides a kind of heatingup of coke oven battery technique.Described technique comprises: when coke oven temperature is lower than 800 ~ 850 DEG C, adopt in the combustion gas of coking chamber combustion, and by heat transfer all with heat coke oven masonry; When coke oven temperature reaches 800 ~ 850 DEG C, use the heating of vault coke oven gas system, heat-up time is 10 ~ 15 days, 1000 ~ 1070 DEG C are slowly risen to make coke oven temperature, wherein, the gas pressure in vault arm is controlled as being not less than 500Pa, and after often connecting the coal gas 7 ~ 8min of vault coke oven gas system, close the coal gas 60 ~ 70s of vault coke oven gas system, then circulation is connected step and is closed step successively.Advantage of the present invention comprises: practicality simple to operate, and cost free drops into or cost drops into low, effectively can control baker furnace temperature and slowly raise, and avoids and is interrupted heating and the furnace temperature rapid take-off and landing that causes to the infringement of body of heater, can promote coke oven's long campaign.
Description
Technical field
The invention belongs to heatingup of coke oven battery technical field, specifically, relate to a kind of can avoiding and occur chapping in baker process and joint-cutting such as to relax at the heatingup of coke oven battery technique of degradation phenomena at coke oven masonry.
Background technology
Usually, in order to get rid of the large quantity of moisture in coke oven masonry, making coking chamber wall temperature bring up to the temperature being applicable to coalingging, will ensure even inflation in masonry temperature-rise period simultaneously, newly-built coke oven must carry out baker.But, because temperature in heatingup of coke oven battery process controls unreasonable, coke oven masonry refractory brick Yin Wendu can be caused sharply to change and occur the phenomenons such as be full of cracks, joint-cutting are lax, having a strong impact on coke oven tightness and body of heater work-ing life.
Therefore, need a kind of method that effective control oven drying temperature of coke oven evenly slowly rises badly, to guarantee coke oven's long campaign and to improve coke oven overall economic benefit.
Summary of the invention
The object of the invention is to solve at least one item in prior art above shortcomings.
Such as, a kind of oven drying temperature of coke oven that can effectively control is the object of the present invention is to provide to make its method evenly slowly risen.
To achieve these goals, the invention provides a kind of heatingup of coke oven battery technique.Described heatingup of coke oven battery technique comprises the following steps: when coke oven temperature is lower than 800 ~ 850 DEG C, adopt at the combustion gas of coking chamber combustion or hybrid fuel as thermal source, by the heat transfer in the heat transfer of coking furnace shaft and the baker hole that is arranged on oven top of coke oven, even heat is delivered to coke oven masonry, when coke oven temperature reaches 800 ~ 850 DEG C, use the heating of vault coke oven gas system, wherein, carry out in the process heated at use vault coke oven gas system, gas pressure in vault arm is controlled as being not less than 500Pa, and after often connecting the coal gas 7 ~ 8min of vault coke oven gas system, close the coal gas 60 ~ 70s of vault coke oven gas system, then the described connection step that circulates successively and described closedown step, raise with the rate uniform of 17 ~ 22 DEG C/day to control coke oven temperature, thus make coke oven temperature slowly rise to 1000 ~ 1070 DEG C.
In one exemplary embodiment of the present invention, the step that described use vault coke oven gas system carries out heating can carry out the operation of oven top of coke oven thermal state project simultaneously.
In one exemplary embodiment of the present invention, described heatingup of coke oven battery technique, when coke oven temperature is lower than 820 ~ 830 DEG C, carries out described employing coking chamber combustion step.
In one exemplary embodiment of the present invention, described heatingup of coke oven battery technique, when coke oven temperature reaches 820 ~ 830 DEG C, carries out the step of described use vault coke oven gas system heating.
In one exemplary embodiment of the present invention, described gas pressure is preferably 510 ~ 600Pa.
In one exemplary embodiment of the present invention, the step of described use vault coke oven gas system heating, makes coke oven temperature slowly rise to 1010 ~ 1050 DEG C.
In one exemplary embodiment of the present invention, the heat-up time of described use vault coke oven gas system heating steps is 10 ~ 15 days.
Compared with prior art, beneficial effect of the present invention comprises: practicality simple to operate, and cost free drops into or cost drops into low, effectively can control baker furnace temperature and slowly raise, avoid and be interrupted heating and the furnace temperature rapid take-off and landing that causes to the infringement of body of heater, can coke oven's long campaign be promoted.
Embodiment
Hereinafter, heatingup of coke oven battery technique of the present invention will be described in detail in conjunction with exemplary embodiment.
In one exemplary embodiment of the present invention, heatingup of coke oven battery technique comprises the following steps: when coke oven temperature is lower than 800 ~ 850 DEG C, adopt at the combustion gas of coking chamber combustion or hybrid fuel as thermal source, by the heat transfer in the heat transfer of coking furnace shaft and the baker hole that is arranged on oven top of coke oven, even heat is delivered to coke oven masonry, when coke oven temperature reaches 800 ~ 850 DEG C, use the heating of vault coke oven gas system, wherein, carry out in the process heated at use vault coke oven gas system, gas pressure in vault arm is controlled as being not less than 500Pa(preferably, gas pressure is 510 ~ 600Pa), and after often connecting the coal gas 7 ~ 8min of vault coke oven gas system, close the coal gas 60 ~ 70s of vault coke oven gas system, then the described connection step that circulates successively and described closedown step, to control coke oven temperature with the speed of 17 ~ 22 DEG C/day (preferably, speed with 18 ~ 21 DEG C/day) evenly raise, thus make coke oven temperature slowly rise to 1000 ~ 1070 DEG C (preferably, coke oven temperature is made to slowly rise to 1010 ~ 1050 DEG C).
In one exemplary embodiment of the present invention, the step that described use coke oven gas system carries out heating also comprises carries out the operation of oven top of coke oven thermal state project simultaneously.Such as, the operation of oven top of coke oven thermal state project comprises necessary sealing and finishing work etc.
In one exemplary embodiment of the present invention, preferably, heatingup of coke oven battery technique, when coke oven temperature is lower than 820 ~ 830 DEG C, carries out described employing coking chamber combustion step; When coke oven temperature reaches 820 ~ 830 DEG C, carry out the step of described use vault coke oven gas system heating.In addition, preferably, use the step of vault coke oven gas system heating to control coke oven temperature to raise with the rate uniform of 18 ~ 21 DEG C/day.
In heatingup of coke oven battery technique of the present invention, early stage baker process (namely, when coke oven temperature is lower than 800 ~ 850 DEG C, adopt at the combustion gas of coking chamber combustion or hybrid fuel as thermal source, by the heat transfer of coking furnace shaft and the heat transfer in baker hole that is arranged on oven top of coke oven even heat is delivered to the step of coke oven masonry) in, the waste gas produced, by furnace roof baker hole, flue, chute, regenerator, bottom flue, point flue, eventually passes coke oven chimney and arranges outward.In later stage baker process (namely, when coke oven temperature reaches 800 ~ 850 DEG C, use the heating of vault coke oven gas system, heat-up time is 10 ~ 15 days, 1000 ~ 1070 DEG C are slowly risen to make coke oven temperature, wherein, carry out in the process heated at use vault coke oven gas system, gas pressure in vault arm is controlled as being not less than 500Pa, and after often connecting the coal gas 7 ~ 8min of vault coke oven gas system, close the coal gas 60 ~ 70s of vault coke oven gas system, then the described connection step that circulates successively and described closedown step) in, if the gas pressure in vault arm is lower than 500Pa, then easily there is coal gas back draft, and the gas pressure in vault arm is greater than 500Pa also can guarantee that burner flue can be assigned to the coal gas of desired amount effectively, thus guarantee that coke oven entirety is heated evenly.In later stage baker process of the present invention, owing to reasonably arranging coal gas service time and gas cutting time, thus avoid the coke oven masonry temperature caused because of gas cutting and sharply decline, such as, the coke oven vertical flame path temperature drop caused because of gas cutting can control within 30 DEG C by technique of the present invention, and then effectively controls the homogeneity of baker furnace temperature.
In heatingup of coke oven battery technique of the present invention, in later stage baker step, the open and close of coal gas in vault arm is operated by Artificial Control.But, the present invention is not limited thereto, preferably, in later stage baker step, the open and close of coal gas in vault arm being operated by automatically controlling to realize.
Below for 6.25m tamping coke furnace in the coal plant of certain iron and steel enterprise, the heatingup of coke oven battery technique of one exemplary embodiment of the present invention is described.
When coke oven temperature is lower than 800 DEG C, adopt at the combustion gas of coking chamber combustion or hybrid fuel as thermal source, by the heat transfer in the heat transfer of coking furnace shaft and the baker hole that is arranged on oven top of coke oven, even heat is delivered to coke oven masonry.Transfer the heating of vault coke-oven gas system to when coke oven furnace temperature reaches 800 DEG C, exchange board manual operation, every 8min exchanges once, will adjust to 60s swap time simultaneously.Gas pressure 500 ~ 600Pa, turning vault normal heating to the time of coalingging is 13 days, every day, intensification was all 18 ~ 21 DEG C, according to field monitoring, coke oven vertical flame path temperature drop almost controls within 30 DEG C, and to exchange temperature drop identical with normally producing flue, namely body of heater masonry is expanded and almost do not affect, and outlet temperature also controls to 1060 DEG C, i.e. the slow rising of effective control temperature, avoids the furnace temperature long period to stop heating simultaneously and sharply declines to then sharply rising again and cause body of heater to damage.
In sum, beneficial effect of the present invention comprises: practicality simple to operate, cost free drops into or cost drops into low, effectively can control baker furnace temperature slowly to raise, avoid and be interrupted heating and the furnace temperature rapid take-off and landing that causes to the infringement of body of heater, coke oven's long campaign can be promoted, the final economic benefit improving coke oven.
Although describe the present invention in conjunction with exemplary embodiment above, those of ordinary skill in the art should be clear, when not departing from the spirit and scope of claim, can carry out various amendment to above-described embodiment.
Claims (7)
1. a heatingup of coke oven battery technique, described heatingup of coke oven battery technique comprises the following steps:
When coke oven temperature is lower than 800 ~ 850 DEG C, adopt at the combustion gas of coking chamber combustion or hybrid fuel as thermal source, by the heat transfer in the heat transfer of coking furnace shaft and the baker hole that is arranged on oven top of coke oven, even heat is delivered to coke oven masonry;
When coke oven temperature reaches 800 ~ 850 DEG C, use the heating of vault coke oven gas system, wherein, carry out in the process heated at use vault coke oven gas system, gas pressure in vault arm is controlled to be 500 ~ 600Pa, and after often connecting the coal gas 7 ~ 8min of vault coke oven gas system, close the coal gas 60 ~ 70s of vault coke oven gas system, then the described connection step that circulates successively and described closedown step, raise with the rate uniform of 17 ~ 22 DEG C/day to control coke oven temperature, thus make coke oven temperature slowly rise to 1000 ~ 1070 DEG C.
2. heatingup of coke oven battery technique according to claim 1, is characterized in that, described use vault coke oven gas system carries out the step heated, and carries out the operation of oven top of coke oven thermal state project simultaneously.
3. heatingup of coke oven battery technique according to claim 1, is characterized in that, described heatingup of coke oven battery technique, when coke oven temperature is lower than 820 ~ 830 DEG C, carries out described employing coking chamber combustion step.
4. heatingup of coke oven battery technique according to claim 1, is characterized in that, described heatingup of coke oven battery technique, when coke oven temperature reaches 820 ~ 830 DEG C, carries out the step of described use vault coke oven gas system heating.
5. heatingup of coke oven battery technique according to claim 1, is characterized in that, described gas pressure is 510 ~ 600Pa.
6. heatingup of coke oven battery technique according to claim 1, is characterized in that, the step of described use vault coke oven gas system heating, makes coke oven temperature slowly rise to 1010 ~ 1050 DEG C.
7. heatingup of coke oven battery technique according to claim 1, is characterized in that, the heat-up time of described use vault coke oven gas system heating steps is 10 ~ 15 days.
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| CN103740380B true CN103740380B (en) | 2015-10-28 |
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| JP6631326B2 (en) * | 2016-03-09 | 2020-01-15 | 日本製鉄株式会社 | Furnace body drying method at the time of burning in furnace body equipment of coke oven |
| CN108397977B (en) * | 2017-02-05 | 2020-03-31 | 鞍钢股份有限公司 | Method for drying coke dry quenching furnace by warm air |
| CN110218830A (en) * | 2019-07-05 | 2019-09-10 | 新疆昆玉钢铁有限公司 | Hot-blast stove winter cool furnace, roast technic in boundary |
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| CN101613606A (en) * | 2009-07-03 | 2009-12-30 | 中冶焦耐(大连)工程技术有限公司 | A kind of oil liquefied gas baker, start-up method |
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| JPS6019658B2 (en) * | 1976-07-26 | 1985-05-17 | 株式会社日立製作所 | Semiconductor device mounting structure |
| JPS5259603A (en) * | 1976-11-01 | 1977-05-17 | Nippon Sekiyu Hanbai Kk | Method and apparatus for carburetting blast furnace gas and coke oven gas with light hydrocarbon produced by processing crude oil |
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Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101353579A (en) * | 2008-08-26 | 2009-01-28 | 武汉钢铁(集团)公司 | 7.63m coke oven negative pressure in-furnace furnace drying method |
| CN101613606A (en) * | 2009-07-03 | 2009-12-30 | 中冶焦耐(大连)工程技术有限公司 | A kind of oil liquefied gas baker, start-up method |
Non-Patent Citations (2)
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| 6m大容积焦炉烘炉实践与体会;杜建宏;《煤化工》;20021031(第5期);36-40 * |
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