CN108531675A - A kind of blast furnace top ignition method - Google Patents
A kind of blast furnace top ignition method Download PDFInfo
- Publication number
- CN108531675A CN108531675A CN201810553361.7A CN201810553361A CN108531675A CN 108531675 A CN108531675 A CN 108531675A CN 201810553361 A CN201810553361 A CN 201810553361A CN 108531675 A CN108531675 A CN 108531675A
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- Prior art keywords
- blast furnace
- damping down
- coal gas
- furnace
- blast
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- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21B—MANUFACTURE OF IRON OR STEEL
- C21B5/00—Making pig-iron in the blast furnace
- C21B5/06—Making pig-iron in the blast furnace using top gas in the blast furnace process
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21B—MANUFACTURE OF IRON OR STEEL
- C21B5/00—Making pig-iron in the blast furnace
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Manufacturing & Machinery (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Buildings Adapted To Withstand Abnormal External Influences (AREA)
Abstract
The invention discloses a kind of blast furnace top ignition methods, are as follows：Blast furnace roof temperature is controlled at 350 400 DEG C before damping down；According to normal damping down program damping down after tapping a blast furnace；It is fully open to ensure that all furnace roofs diffuse after damping down；Open furnace roof furnace throat manhole；Igniting personnel are in the wind at station the manhole side of head；It notifies hot-blast stove to open reverse flow valve, ensures that blast furnace is in negative pressure state, allow air to enter blast furnace roof dead zone, be sufficiently mixed with remaining coal gas；It is sufficiently mixed with coal gas because air enters in stove, along with temperature is suitable, coal gas is lighted naturally.The present invention passes through practice test, can effectively shorten the duration of ignition, and safer, reliable, does not need any transformation and adds any equipment, is worthy to be popularized.
Description
Technical field
The present invention relates to a kind of ignition method, specifically a kind of blast furnace top ignition method.
Background technology
The remaining coal gas escaped from furnace throat charge level is lighted after blast furnace staying and is just called furnace roof igniting, this is to ensure blast furnace staying
Coal gas overflows blast-furnace body afterwards, ensures one important safety measure when furnace top equipment maintenance.When short term damping-down, logical steam can be used
Method ensures safety, but long term blowing-down generally requires maintenance furnace top equipment, even if not overhauling furnace top equipment, logical steam can store for a long time
The many moisture of product bring adverse effect to pushing wind manipulation, therefore carry out furnace roof after long term blowing-down and light a fire to be an economy and safety
Measure.General furnace roof ignition procedure is：Blast furnace controls top temperature at 300-400 DEG C before damping down first, has gone out iron
All operations are completed by defined damping down program afterwards, a certain amount of oily cotton yarn is taken later to furnace roof manhole platform, opens stove
Oily cotton yarn is lighted, is thrown into State of Blast Furnace from manhole by larynx manhole, lights coal gas remaining in blast furnace, if once misfired,
It will repeatedly carry out, until coal gas.The method drawback of this igniting：Because being still ensured that just after damping down in blast furnace
Pressure, the air short time outside stove enter seldom in stove, and cannot mix well, cause igniting difficulty to increase, and need
Time is long, extends the blast furnace staying time.
Invention content
The purpose of the present invention is to provide a kind of blast furnace top ignition method that can securely and reliably shorten the duration of ignition, with
Solve the problems mentioned above in the background art.
To achieve the above object, the present invention provides the following technical solutions：
A kind of blast furnace top ignition method, is as follows：
（1）Blast furnace roof temperature is controlled at 350-400 DEG C before damping down；
（2）According to normal damping down program damping down after tapping a blast furnace；
（3）It is fully open to ensure that all furnace roofs diffuse after damping down；
（4）Open furnace roof furnace throat manhole；
（5）Igniting personnel are in the wind at station the manhole side of head；
（6）It notifies hot-blast stove to open reverse flow valve, ensures that blast furnace is in negative pressure state, air is allowed to enter blast furnace roof dead zone, and it is residual
Remaining coal gas is sufficiently mixed；
（7）It is sufficiently mixed with coal gas because air enters in stove, along with temperature is suitable, coal gas is lighted naturally.
As the further technical solution of the present invention：The step（1）Blast furnace roof temperature is controlled before middle damping down
380℃。
Compared with prior art, the beneficial effects of the invention are as follows：
The present invention passes through practice test, can effectively shorten the duration of ignition, and safer, reliable, do not need any transformation and
Any equipment is added, is worthy to be popularized.
Specific implementation mode
The technical solution of this patent is described in more detail With reference to embodiment.
Embodiment 1
A kind of blast furnace top ignition method, is as follows：
（1）Blast furnace roof temperature is controlled in 350- before damping down；
（2）According to normal damping down program damping down after tapping a blast furnace；
（3）It is fully open to ensure that all furnace roofs diffuse after damping down；
（4）Open furnace roof furnace throat manhole；
（5）Igniting personnel are in the wind at station the manhole side of head, can't stand in manhole front；
（6）It notifies hot-blast stove to open reverse flow valve, ensures that blast furnace is in negative pressure state, air is allowed to enter blast furnace roof dead zone, and it is residual
Remaining coal gas is sufficiently mixed；
（7）It is sufficiently mixed with coal gas because air enters in stove, along with temperature is suitable, coal gas is lighted naturally.
Embodiment 2
A kind of blast furnace top ignition method, is as follows：
（1）Blast furnace roof temperature is controlled at 360 DEG C before damping down；
（2）According to normal damping down program damping down after tapping a blast furnace；
（3）It is fully open to ensure that all furnace roofs diffuse after damping down；
（4）Open furnace roof furnace throat manhole；
（5）Igniting personnel are in the wind at station the manhole side of head, can't stand in manhole front；
（6）It notifies hot-blast stove to open reverse flow valve, ensures that blast furnace is in negative pressure state, air is allowed to enter blast furnace roof dead zone, and it is residual
Remaining coal gas is sufficiently mixed；
（7）It is sufficiently mixed with coal gas because air enters in stove, along with temperature is suitable, coal gas is lighted naturally.
Embodiment 3
A kind of blast furnace top ignition method, is as follows：
（1）Blast furnace roof temperature is controlled at 380 DEG C before damping down；
（2）According to normal damping down program damping down after tapping a blast furnace；
（3）It is fully open to ensure that all furnace roofs diffuse after damping down；
（4）Open furnace roof furnace throat manhole；
（5）Igniting personnel are in the wind at station the manhole side of head, can't stand in manhole front；
（6）It notifies hot-blast stove to open reverse flow valve, ensures that blast furnace is in negative pressure state, air is allowed to enter blast furnace roof dead zone, and it is residual
Remaining coal gas is sufficiently mixed；
（7）It is sufficiently mixed with coal gas because air enters in stove, along with temperature is suitable, coal gas is lighted naturally.
Embodiment 4
A kind of blast furnace top ignition method, is as follows：
（1）Blast furnace roof temperature is controlled at 390 DEG C before damping down；
（2）According to normal damping down program damping down after tapping a blast furnace；
（3）It is fully open to ensure that all furnace roofs diffuse after damping down；
（4）Open furnace roof furnace throat manhole；
（5）Igniting personnel are in the wind at station the manhole side of head, can't stand in manhole front；
（6）It notifies hot-blast stove to open reverse flow valve, ensures that blast furnace is in negative pressure state, air is allowed to enter blast furnace roof dead zone, and it is residual
Remaining coal gas is sufficiently mixed；
（7）It is sufficiently mixed with coal gas because air enters in stove, along with temperature is suitable, coal gas is lighted naturally.
Embodiment 5
A kind of blast furnace top ignition method, is as follows：
（1）Blast furnace roof temperature is controlled at 400 DEG C before damping down；
（2）According to normal damping down program damping down after tapping a blast furnace；
（3）It is fully open to ensure that all furnace roofs diffuse after damping down；
（4）Open furnace roof furnace throat manhole；
（5）Igniting personnel are in the wind at station the manhole side of head, can't stand in manhole front；
（6）It notifies hot-blast stove to open reverse flow valve, ensures that blast furnace is in negative pressure state, air is allowed to enter blast furnace roof dead zone, and it is residual
Remaining coal gas is sufficiently mixed；
（7）It is sufficiently mixed with coal gas because air enters in stove, along with temperature is suitable, coal gas is lighted naturally.
The present invention passes through practice test, can effectively shorten the duration of ignition, and safer, reliable, does not need any change
Any equipment is made and added, is worthy to be popularized.
The better embodiment of this patent is explained in detail above, but this patent is not limited to above-mentioned embodiment party
Formula, one skilled in the relevant art within the scope of knowledge, can also be under the premise of not departing from this patent objective
Various changes can be made.
Claims (2)
1. a kind of blast furnace top ignition method, which is characterized in that be as follows：
（1）Blast furnace roof temperature is controlled at 350-400 DEG C before damping down；
（2）According to normal damping down program damping down after tapping a blast furnace；
（3）It is fully open to ensure that all furnace roofs diffuse after damping down；
（4）Open furnace roof furnace throat manhole；
（5）Igniting personnel are in the wind at station the manhole side of head；
（6）It notifies hot-blast stove to open reverse flow valve, ensures that blast furnace is in negative pressure state, air is allowed to enter blast furnace roof dead zone, and it is residual
Remaining coal gas is sufficiently mixed；
（7）It is sufficiently mixed with coal gas because air enters in stove, along with temperature is suitable, coal gas is lighted naturally.
2. blast furnace top ignition method according to claim 1, which is characterized in that the step（1）It will be high before middle damping down
Stove top temperature is controlled at 380 DEG C.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810553361.7A CN108531675A (en) | 2018-06-01 | 2018-06-01 | A kind of blast furnace top ignition method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810553361.7A CN108531675A (en) | 2018-06-01 | 2018-06-01 | A kind of blast furnace top ignition method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108531675A true CN108531675A (en) | 2018-09-14 |
Family
ID=63473250
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810553361.7A Pending CN108531675A (en) | 2018-06-01 | 2018-06-01 | A kind of blast furnace top ignition method |
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| CN (1) | CN108531675A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109402312A (en) * | 2018-12-06 | 2019-03-01 | 徐州亚华同创节能环保科技有限公司 | The ignition device for blast furnace roof and ignition method of mechanical arm type |
| CN109628674A (en) * | 2018-12-20 | 2019-04-16 | 包头钢铁（集团）有限责任公司 | The repair method of top gas sealing cover |
| CN110643761A (en) * | 2019-04-11 | 2020-01-03 | 广东韶钢松山股份有限公司 | Blast furnace top ignition method |
| CN111172337A (en) * | 2020-01-16 | 2020-05-19 | 新兴铸管股份有限公司 | Filling type blowing-out method for blast furnace |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201206838Y (en) * | 2008-04-18 | 2009-03-11 | 武汉摩林翰机电设备有限公司 | Top ignition device for blast furnace |
| JP2013130375A (en) * | 2011-12-22 | 2013-07-04 | Jfe Steel Corp | Method of manufacturing combustible gas |
-
2018
- 2018-06-01 CN CN201810553361.7A patent/CN108531675A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201206838Y (en) * | 2008-04-18 | 2009-03-11 | 武汉摩林翰机电设备有限公司 | Top ignition device for blast furnace |
| JP2013130375A (en) * | 2011-12-22 | 2013-07-04 | Jfe Steel Corp | Method of manufacturing combustible gas |
Non-Patent Citations (1)
| Title |
|---|
| 蒋晓嘉 等: ""小高炉长期封炉后的开炉操作"", 《四川冶金》 * |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109402312A (en) * | 2018-12-06 | 2019-03-01 | 徐州亚华同创节能环保科技有限公司 | The ignition device for blast furnace roof and ignition method of mechanical arm type |
| CN109628674A (en) * | 2018-12-20 | 2019-04-16 | 包头钢铁（集团）有限责任公司 | The repair method of top gas sealing cover |
| CN110643761A (en) * | 2019-04-11 | 2020-01-03 | 广东韶钢松山股份有限公司 | Blast furnace top ignition method |
| CN110643761B (en) * | 2019-04-11 | 2021-08-31 | 广东韶钢松山股份有限公司 | Blast furnace top ignition method |
| CN111172337A (en) * | 2020-01-16 | 2020-05-19 | 新兴铸管股份有限公司 | Filling type blowing-out method for blast furnace |
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Application publication date: 20180914 |
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