CN105349724B - Coal gas of converter mingled burning installation for hot-blast stove - Google Patents
Coal gas of converter mingled burning installation for hot-blast stove Download PDFInfo
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- CN105349724B CN105349724B CN201510875737.2A CN201510875737A CN105349724B CN 105349724 B CN105349724 B CN 105349724B CN 201510875737 A CN201510875737 A CN 201510875737A CN 105349724 B CN105349724 B CN 105349724B
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- converter
- coal gas
- branched pipe
- blast furnace
- gas
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- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21B—MANUFACTURE OF IRON OR STEEL
- C21B9/00—Stoves for heating the blast in blast furnaces
- C21B9/10—Other details, e.g. blast mains
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
- F27D17/00—Arrangements for using waste heat; Arrangements for using, or disposing of, waste gases
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Environmental & Geological Engineering (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Carbon Steel Or Casting Steel Manufacturing (AREA)
- Regulation And Control Of Combustion (AREA)
Abstract
The invention discloses the coal gas of converter mingled burning installation for hot-blast stove, including：The coal gas of converter primary branch being connected with the total pipe network of coal gas of converter, coal gas of converter primary branch corresponds to every hot-blast stove and draws a coal gas of converter branched pipe respectively, every coal gas of converter branched pipe is communicated by an induction tunnel with the blast furnace gas branched pipe of corresponding hot-blast stove respectively, corresponding to every induction tunnel insertion in blast furnace gas branched pipe, the insertion position of every induction tunnel is located between the blast furnace gas branched pipe flow control valve and blast furnace gas branched pipe stop valve on corresponding blast furnace gas branched pipe, coal gas of converter branched pipe flow control valve is respectively arranged with every coal gas of converter branched pipe.It is an advantage of the invention that：It can effectively avoid blast furnace gas from pouring in down a chimney the generation of phenomenon, while often need not significantly turn down blast furnace gas primary branch imported valve, and need not frequently adjust the flow control valve on coal gas of converter primary branch, and it is safe to use.
Description
Technical field
The present invention relates to the coal gas of converter mingled burning installation for hot-blast stove.
Background technology
Hot-blast stove is one of main corollary equipment of Iron Works, and the effect of hot-blast stove is carried for blast furnace is continual
For high-temperature hot-air.At present, the wind-warm syndrome for more than 1000 DEG C of high-temperature hot-air, which often improves 100 DEG C, can save 15~20kg/ of coke ratio
T, the wind-warm syndrome of less than 1000 DEG C of high-temperature hot-air, which often improves 100 DEG C, can save the kg/t of coke ratio 30, therefore it is enterprise's section to improve wind-warm syndrome
Can emission reduction, the important measures of cost efficiency.
Coal gas of converter is the combustible gas of caused higher thermal value in convertor steelmaking process, and the calorific value of unit coal gas of converter is about
6000KJ, and the calorific value of unit blast furnace gas is about 3000-3300KJ, the calorific value of unit coal gas of converter is about unit blast furnace gas
2 times of calorific value, thus mix in blast furnace gas that to burn coal gas of converter be a kind of effective ways for improving hot-blast stove supply wind-warm syndrome.It is existing
Blast furnace gas air supply system includes used in stage：The blast furnace gas primary branch being connected with blast furnace gas main pipe net, in height
Electric butterfly valve, electric blind plate valve, pressure detecting instrument, flow detector and temperature monitor are provided with producer gas primary branch, often
Seat hot-blast stove is connected by a blast furnace gas branched pipe with blast furnace gas primary branch respectively, on every blast furnace gas branched pipe
The flow direction for leading to burner in hot-blast stove along blast furnace gas is disposed with blast furnace gas branched pipe Flow-rate adjustment respectively
Valve, blast furnace gas branched pipe stop valve and blast furnace gas branched pipe combustion valve, in blast furnace gas branched pipe stop valve and blast furnace coal
Gas bleeding valve is additionally provided with blast furnace gas branched pipe between qi leel branch pipe combustion valve.Typically mixed at present by coal gas of converter
Burn after device mixes coal gas of converter with blast furnace gas and be supplied to hot-blast stove.There are two kinds of coal gas of converter mingled burning installations at this stage, its
A kind of structure of middle coal gas of converter mingled burning installation is：Including the coal gas of converter primary branch being connected with the total pipe network of coal gas of converter, turn
Producer gas primary branch leads directly to an injection endless tube, and injection endless tube ring set is on the outside of blast furnace gas primary branch, the edge on injection endless tube
It is circumferentially provided with some induction tunnels, and every induction tunnel is inserted in blast furnace gas primary branch, and coal gas of converter passes through injection endless tube
On some induction tunnels enter in blast furnace gas primary branch, so as to being mixed with the blast furnace gas in blast furnace gas primary branch, reach
To the purpose for mixing burning.The structure of another coal gas of converter mingled burning installation is：Including the converter being connected with the total pipe network of coal gas of converter
Coal gas primary branch, the caliber of coal gas of converter primary branch are much smaller than the caliber of blast furnace gas primary branch, and coal gas of converter primary branch tilts
Insert in blast furnace gas primary branch, coal gas of converter is entered by coal gas of converter primary branch in blast furnace gas primary branch, so that with
Blast furnace gas mixing in blast furnace gas primary branch, reaches the purpose for mixing burning.Above two coal gas of converter mingled burning installation is all present
Following shortcoming：（1）Because the pressure knot of blast furnace gas and coal gas of converter is often in factor and original pipe network characteristic factor in fluctuation,
Usually need significantly to turn down the imported valve of blast furnace gas primary branch, certain potential safety hazard be present；（2）Same original
When cause, particularly blast-furnace gas pressure and coal gas of converter pressure unmatched, ejection function " failure " and occur " pour in down a chimney " phenomenon, i.e.,
Blast furnace gas pours in down a chimney into converter gas pipeline, burns function failure so as to cause to mix；（3）Due to the characteristic of hot-blast stove operation, often
Hour changes a stove, during stove is changed, has a hot-blast stove to stop burning stove in 12 ~ 15 minutes（By taking 3 hot-blast stoves as an example, heat
3 hot-blast stoves are burnt 1 and sent and are changed into 1 burning 1 and stop 1 sending from 2 when wind furnace changes stove）, thus need in frequently regulation coal gas of converter primary branch
Flow control valve, pressure, the stability of flow for being so easily caused whole system are poor.
The content of the invention
It is an object of the invention to provide a kind of generation that can effectively avoid blast furnace gas from pouring in down a chimney phenomenon, while need not be frequent
Blast furnace gas primary branch imported valve is significantly turned down, and need not frequently adjust the Flow-rate adjustment on coal gas of converter primary branch
Valve, and the coal gas of converter mingled burning installation for hot-blast stove safe to use.
To achieve the above object, present invention employs following technical scheme：The described coal gas of converter for hot-blast stove is mixed
Device is burnt, including：The coal gas of converter primary branch being connected with the total pipe network of coal gas of converter, coal gas of converter primary branch correspond to every hot blast
Stove draws a coal gas of converter branched pipe respectively, and every coal gas of converter branched pipe passes through an induction tunnel and corresponding hot-blast stove respectively
Blast furnace gas branched pipe communicate, corresponding to the insertion of every induction tunnel in blast furnace gas branched pipe, the insertion position of every induction tunnel
Setting in the blast furnace gas branched pipe flow control valve on corresponding blast furnace gas branched pipe and blast furnace gas branched pipe stop valve it
Between, coal gas of converter branched pipe flow control valve is respectively arranged with every coal gas of converter branched pipe.
Further, the coal gas of converter mingled burning installation of hot-blast stove is previously described for, wherein：Every induction tunnel and corresponding height
25~40 ° of angular range between the center line of producer gas branched pipe.
Further, the coal gas of converter mingled burning installation of hot-blast stove is previously described for, wherein：It is suitable on coal gas of converter primary branch
Coal gas of converter airintake direction be disposed with by Shop floor control aperture size first of coal gas of converter primary branch flow tune
Save valve and the second coal gas of converter primary branch flow control valve of aperture size is adjusted by site operation personnel.
The implementation of Pass through above-mentioned technical proposal, the beneficial effects of the invention are as follows：（1）Height of the coal gas of converter in every hot-blast stove
Injection on producer gas branched pipe, the gas pressure in blast furnace gas branched pipe is relatively more less than blast furnace gas primary branch, with converter
Pressure in coal gas branched pipe is good with respect to matching, it is no longer necessary to uses originally from blast furnace gas primary branch during injection, often
Need significantly to turn down the inlet valve on blast furnace gas primary branch（Chang Daguan to 60% valve position）Operation；（2）In blast furnace gas
Injection substantially reduces the path that coal gas of converter enters burner in hot-blast stove on branched pipe, effectively reduces pressure loss, phase
The few situation of smokestack and burner draft wealth to adaptive system, the relative actual effect for improving injection, has
Imitate the generation for avoiding blast furnace gas from " pouring in down a chimney " phenomenon；（3）Converter is respectively arranged with the coal gas of converter branched pipe of every hot-blast stove
Coal gas branched pipe flow control valve, just can be to entering by each stove coal gas of converter branched pipe flow control valve when changing-over stove
The coal gas of converter usage amount for entering corresponding hot-blast stove is controlled, and is avoided when stopping burning certain stove, and this stops burning stove interference and is heating wind
The occurrence of stove；It is not only easy to adjust, and regulating effect is good, is advantageous to system run all right.
Brief description of the drawings
Fig. 1 is the operation principle schematic diagram of the coal gas of converter mingled burning installation of the present invention for hot-blast stove.
Embodiment
The invention will be further described with specific embodiment below in conjunction with the accompanying drawings.
As shown in figure 1, the described coal gas of converter mingled burning installation for hot-blast stove, including：The phase of pipe network 1 total with coal gas of converter
The coal gas of converter primary branch 2 of connection, the corresponding every hot-blast stove 3 of coal gas of converter primary branch 2 draw a coal gas of converter branch respectively
Pipe 5, every coal gas of converter branched pipe 5 are communicated by an induction tunnel 3 with the blast furnace gas branched pipe 6 of corresponding hot-blast stove 3 respectively,
Every induction tunnel 4 is inserted in corresponding blast furnace gas branched pipe 6, and the insertion position of every induction tunnel 4 is located at corresponding blast furnace gas
Between blast furnace gas branched pipe flow control valve 7 and blast furnace gas branched pipe stop valve 8 on branched pipe 6, in every converter coal
Coal gas of converter branched pipe flow control valve 9 is respectively arranged with qi leel branch pipe 5；In the present embodiment, every induction tunnel 4 with it is corresponding
Blast furnace gas branched pipe 6 center line between 25~40 ° of angular range, and control induction tunnel insert certain depth
Degree, this induction tunnel angular range and insertion depth, which are set, can meet injection requirement, further avoid blast furnace gas from pouring in down a chimney phenomenon
Generation；In the present embodiment, the airintake direction along coal gas of converter on coal gas of converter primary branch 2 is disposed with by workshop
Control first of coal gas of converter primary branch flow control valve 10 of aperture size and aperture size is adjusted by site operation personnel
Second coal gas of converter primary branch flow control valve 11, can be protected by first of coal gas of converter primary branch flow control valve 10
The coal gas of converter total amount in coal gas of converter primary branch 2 is demonstrate,proved all the time in safe range, improves safety in utilization, is turned by second
Producer gas primary branch flow control valve 11, worker can be made more easily to be adjusted according to actual conditions in coal gas of converter primary branch 2
Coal gas of converter flow；In actual use, electric blind plate valve 12 is additionally provided with coal gas of converter primary branch 2, is pneumatically cut soon
Valve 13, and the instrumentation such as pressure detecting instrument, flow detector and temperature monitor, so may further ensure that operation
Stability；
The operation principle of the present invention is as follows：
Blast furnace gas in blast furnace gas primary branch 14 enters the burner of each hot-blast stove 3 through each blast furnace gas branched pipe 6
In, and the coal gas of converter in coal gas of converter primary branch 2 is then entered through each coal gas of converter branched pipe 5 and corresponding induction tunnel 4 by injection
In corresponding blast furnace gas branched pipe 6, into the blast furnace gas in blast furnace gas branched pipe 6 and coal gas of converter according to a certain percentage
Mixing, into the burner of hot-blast stove 3.It is an advantage of the invention that：（1）Blast furnace coal qi leel of the coal gas of converter in every hot-blast stove
Injection on branch pipe, the gas pressure in blast furnace gas branched pipe is relatively more less than blast furnace gas primary branch, with coal gas of converter branch
Pressure in pipe is good with respect to matching, it is no longer necessary to uses originally from blast furnace gas primary branch during injection, it is often necessary to significantly
Degree turns down the inlet valve on blast furnace gas primary branch（Chang Daguan to 60% valve position）Operation；（2）On blast furnace gas branched pipe
Injection substantially reduces the path that coal gas of converter enters burner in hot-blast stove, effectively reduces pressure loss, relative adaptation system
The few situation of the smokestack and burner draft wealth of system, the relative actual effect for improving injection, effectively avoids height
Producer gas " pours in down a chimney " generation of phenomenon；（3）Coal gas of converter branch is respectively arranged with the coal gas of converter branched pipe of every hot-blast stove
Pipe flow control valve, just can be to entering corresponding heat by each stove coal gas of converter branched pipe flow control valve when changing-over stove
The coal gas of converter usage amount of wind furnace is controlled, and is avoided when stopping burning certain stove, and this stops burning stove interference and is heating wind furnace situation
Occur；It is not only easy to adjust, and regulating effect is good, is advantageous to system run all right.
Claims (3)
1. for the coal gas of converter mingled burning installation of hot-blast stove, including：The main branch of coal gas of converter being connected with the total pipe network of coal gas of converter
Pipe, it is characterised in that：Coal gas of converter primary branch corresponds to every hot-blast stove and draws a coal gas of converter branched pipe, every converter respectively
Coal gas branched pipe is communicated by an induction tunnel with the blast furnace gas branched pipe of corresponding hot-blast stove respectively, every induction tunnel insertion pair
In the blast furnace gas branched pipe answered, the insertion position of every induction tunnel is located at the blast furnace coal qi leel on corresponding blast furnace gas branched pipe
Between branch pipe flow control valve and blast furnace gas branched pipe stop valve, converter is respectively arranged with every coal gas of converter branched pipe
Coal gas branched pipe flow control valve.
2. the coal gas of converter mingled burning installation according to claim 1 for hot-blast stove, it is characterised in that：Every induction tunnel with
25~40 ° of angular range between the center line of corresponding blast furnace gas branched pipe.
3. the coal gas of converter mingled burning installation according to claim 1 for hot-blast stove, it is characterised in that：In coal gas of converter master
Airintake direction on branch pipe along coal gas of converter is disposed with the main branch of first of coal gas of converter by Shop floor control aperture size
Pipe flow control valve and the second coal gas of converter primary branch flow control valve that aperture size is adjusted by site operation personnel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510875737.2A CN105349724B (en) | 2015-12-03 | 2015-12-03 | Coal gas of converter mingled burning installation for hot-blast stove |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510875737.2A CN105349724B (en) | 2015-12-03 | 2015-12-03 | Coal gas of converter mingled burning installation for hot-blast stove |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105349724A CN105349724A (en) | 2016-02-24 |
| CN105349724B true CN105349724B (en) | 2018-02-02 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510875737.2A Active CN105349724B (en) | 2015-12-03 | 2015-12-03 | Coal gas of converter mingled burning installation for hot-blast stove |
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107677142A (en) * | 2017-10-18 | 2018-02-09 | 江苏永钢集团有限公司 | Sintering ignition furnace fuel control system |
| CN115232903B (en) * | 2022-07-07 | 2023-12-01 | 广东韶钢松山股份有限公司 | Blast furnace hot blast stove system and flue gas purification method, device, equipment and medium thereof |
Citations (6)
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| CN201046969Y (en) * | 2007-05-31 | 2008-04-16 | 上海梅山钢铁股份有限公司 | Revolving furnace coal gas recovery utilizing system |
| CN202155156U (en) * | 2011-06-17 | 2012-03-07 | 新兴铸管股份有限公司 | Converter gas and blast-furnace gas mixing device |
| CN103451340A (en) * | 2013-08-23 | 2013-12-18 | 首钢总公司 | Device and method thereof for increasing air temperature of hot blast furnace by utilizing air voltage transformation to adsorb oxygen enrichment |
| CN104043375A (en) * | 2013-03-15 | 2014-09-17 | 宝山钢铁股份有限公司 | Mixing equipment for high pressure natural gas and low pressure coal gas and mixing method |
| CN204058506U (en) * | 2014-09-02 | 2014-12-31 | 莱芜钢铁集团有限公司 | A kind of blast furnace ironmaking hotblast stove device |
| CN205241722U (en) * | 2015-12-03 | 2016-05-18 | 江苏永钢集团有限公司 | A fever device is mixed to converter coal gas for hot -blast furnace |
-
2015
- 2015-12-03 CN CN201510875737.2A patent/CN105349724B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201046969Y (en) * | 2007-05-31 | 2008-04-16 | 上海梅山钢铁股份有限公司 | Revolving furnace coal gas recovery utilizing system |
| CN202155156U (en) * | 2011-06-17 | 2012-03-07 | 新兴铸管股份有限公司 | Converter gas and blast-furnace gas mixing device |
| CN104043375A (en) * | 2013-03-15 | 2014-09-17 | 宝山钢铁股份有限公司 | Mixing equipment for high pressure natural gas and low pressure coal gas and mixing method |
| CN103451340A (en) * | 2013-08-23 | 2013-12-18 | 首钢总公司 | Device and method thereof for increasing air temperature of hot blast furnace by utilizing air voltage transformation to adsorb oxygen enrichment |
| CN204058506U (en) * | 2014-09-02 | 2014-12-31 | 莱芜钢铁集团有限公司 | A kind of blast furnace ironmaking hotblast stove device |
| CN205241722U (en) * | 2015-12-03 | 2016-05-18 | 江苏永钢集团有限公司 | A fever device is mixed to converter coal gas for hot -blast furnace |
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| CN105349724A (en) | 2016-02-24 |
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Effective date of registration: 20190704 Address after: 215600 Yonglian Village, Nanfeng Town, Zhangjiagang City, Jiangsu Province Patentee after: Lian Feng Steel (Zhangjiagang) Co., Ltd. Address before: 215628 Yonglian Jiangsu Yonggang Group Co., Ltd., Nanfeng Town, Zhangjiagang City, Suzhou City, Jiangsu Province Patentee before: Jiangsu Yonggang Group Co., Ltd. |