CN109708474A - Agglomeration for iron mine system without discharged gas fume - Google Patents
Agglomeration for iron mine system without discharged gas fume Download PDFInfo
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- CN109708474A CN109708474A CN201811557889.8A CN201811557889A CN109708474A CN 109708474 A CN109708474 A CN 109708474A CN 201811557889 A CN201811557889 A CN 201811557889A CN 109708474 A CN109708474 A CN 109708474A
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Abstract
The present invention relates to the recycling process for iron and steel production technical fields for promoting emission reduction, the specifically agglomeration for iron mine system without discharged gas fume, including preheating furnace and for the ignition furnace of agglomeration for iron mine, gas preheating pipe and combustion air economizer bank are equipped in the preheating burner hearth of preheating furnace, the inlet end of gas preheating pipe is communicated with the first gas inlet pipe, the outlet side of gas preheating pipe is communicated with gas-pipe line, the inlet end of combustion air economizer bank is communicated with the first combustion air air inlet pipe, the outlet side of combustion air economizer bank is communicated with combustion air conduit, the first burner is equipped in the sintering burner hearth of ignition furnace, gas-pipe line and combustion air conduit are connected to the inlet end of the first burner；To solve in current sintering process, since sintering coal gas and sintering combustion air are unprocessed, it will cause and generate a large amount of smog during the sintering process, the smog emission for being sintered generation will form air pollution into air, and the problem of also will affect the health of operating personnel around.
Description
Technical field
The present invention relates to the recycling process for iron and steel production technical fields for promoting emission reduction, specifically without the agglomeration for iron mine of discharged gas fume
System.
Background technique
In the process of iron ore, it will do it sintering processes, sintering process directly affects the crystal grain ruler in microstructure
Very little, pore size and grain-boundary shape and distribution, and then the performance of material is influenced, during sintering, coal gas is sintered combustion-supporting
Flame can be carried out under wind action at burner, sintering feed can be sintered in flame to sintering charge level, still
In current sintering process, since sintering coal gas and sintering combustion air are unprocessed, it will cause and generate during the sintering process greatly
The smog of amount, the smog emission for being sintered generation will form air pollution into air, and will affect the body of operating personnel around
Body health.
Summary of the invention
The purpose of the present invention is to provide the agglomeration for iron mine systems of no discharged gas fume, to solve in current sintering process,
Since sintering coal gas and sintering combustion air are unprocessed, it will cause and generate a large amount of smog during the sintering process, be sintered generation
Smog emission will form air pollution into air, and the problem of also will affect the health of operating personnel around.
In order to solve the above technical problems, the invention adopts the following technical scheme:
A kind of agglomeration for iron mine system of no discharged gas fume, including preheating furnace and for the ignition furnace of agglomeration for iron mine, the preheating furnace
Preheating burner hearth in be equipped with gas preheating pipe and combustion air economizer bank, the inlet end of the gas preheating pipe is communicated with the first coal gas
Air inlet pipe, the outlet side of the gas preheating pipe are communicated with gas-pipe line, and the inlet end of the combustion air economizer bank is communicated with
One combustion air air inlet pipe, the outlet side of the combustion air economizer bank are communicated with combustion air conduit, the sintering burner hearth of the ignition furnace
It is inside equipped with the first burner, the gas-pipe line and combustion air conduit are connected to the inlet end of the first burner.
Preferably, it further includes sintering feed transport device that further technical solution, which is, the sintering feed transport device exists
Direction in the sintering system along ignition furnace to preheating furnace is driven, and first burner is set to the top of ignition furnace,
The spitfire end of first burner downward and is directed toward the sintering feed transportation surface of the sintering feed transport device.
Further technical solution is that first burner is set as 20, and 20 first burners are set as two
Row, described two ranked first burner is distributed along with the perpendicular transverse plane of sintering feed transport device transmission direction.
Further technical solution is that the second burner is equipped in the preheating furnace, and second burner is pre- for heating
Hot stove thorax.
Further technical solution is that second burner is set to the upper side of preheating furnace, second burner
Spitfire end downward and is directed toward the sintering feed transportation surface of the sintering feed transport device.
Further technical solution is, second burner is set as 5, and the upper side of preheating furnace along with
The perpendicular transverse plane of sintering feed transport device transmission direction is uniformly distributed.
Further technical solution is that first burner and the second burner are that flame is long and flame penetration power is strong
Burner.
Further technical solution is that the inlet end of second burner is connected with the second gas inlet pipe and second and helps
Fire wind air inlet pipe.
Further technical solution is to be equipped with second in second gas inlet pipe and the second combustion air air inlet pipe
Control valve.
Further technical solution is to be equipped with first in first gas inlet pipe and the first combustion air air inlet pipe
Control valve.
Compared with prior art, the beneficial effects of the present invention are: being used for the sintering of iron ore by setting ignition furnace, guarantee to burn
Being normally carried out for knot, while being arranged preheating furnace, the setting preheating burner hearth in preheating furnace, in preheating burner hearth setting gas preheating pipe and
Combustion air economizer bank, and gas-pipe line is connected to coal in the air intake of gas preheating pipe by the connection of the first gas inlet pipe
The outlet air end of gas economizer bank blows into fuel gas as fuel by the first gas inlet pipe, in the first gas inlet pipe can
Combustion gas body is blown into gas preheating pipe, and logical heat transfer makes to preheat the heat transfer in burner hearth into gas preheating pipe, can be right
Fuel gas in gas preheating pipe is preheated, and is preheated and be additionally provided with combustion air economizer bank in burner hearth, combustion air economizer bank
Air intake be communicated with the first combustion air air inlet pipe, the outlet air end of combustion air economizer bank is communicated with combustion air conduit, helps from first
Combustion wind air inlet pipe blows into the gas in combustion air economizer bank and can be transmitted by the heat between preheating burner hearth and combustion air economizer bank
It is heated, realizes the heating of combustion air, gas-pipe line and combustion air conduit are connected to the inlet end of the first burner,
It lights a fire at the flame of the first burner, to be sintered to sintering feed, and by preheating furnace to fuel gas and combustion-supporting
After wind is preheated, fuel factor when burning will be got higher, and just will not generate a large amount of smog during the sintering process, and be produced to air
The problem of the problem of raw pollution and influence surrounding operating personnel health.
Detailed description of the invention
Fig. 1 is the structural schematic diagram at the first visual angle of agglomeration for iron mine system without discharged gas fume.
Fig. 2 is the structural schematic diagram at the second visual angle of agglomeration for iron mine system without discharged gas fume.
In figure: 1, ignition furnace；2, preheating furnace；3, burner hearth is preheated；4, gas preheating pipe；5, combustion air economizer bank；6, first
Gas inlet pipe；7, gas-pipe line；8, the first combustion air air inlet pipe；9, combustion air conduit；10, it is sintered burner hearth；11, first burns
Mouth；12, the second burner；13, the second gas inlet pipe；14, the second combustion air air inlet pipe.
Specific embodiment
In order to make the objectives, technical solutions, and advantages of the present invention clearer, with reference to the accompanying drawings and embodiments, right
The present invention is further elaborated.It should be appreciated that the specific embodiments described herein are merely illustrative of the present invention, and
It is not used in the restriction present invention.
Fig. 1-2 shows the embodiment of the agglomeration for iron mine system of no discharged gas fume.
Referring to attached drawing 1 and attached drawing 2, the present invention provides a kind of agglomeration for iron mine system that can reduce flue gas discharge capacity, may include
There are ignition furnace 1 and preheating furnace 2, sintering burner hearth 10 is provided in ignition furnace 1, it can be in sintering burner hearth 10 to agglomeration for iron mine material
It is sintered, preheating burner hearth 3 can be set in preheating furnace 2, the mode that the heat in preheating furnace 2 leads to heat transfer is transmitted into pre-
In hot stove thorax 3, so that used fuel gas and combustion air preheat when preheating burner hearth 3 is used for sintering, to flammable
After gas and combustion air are preheated, in gas fuel burning, fuel factor can be promoted, avoids carrying out in agglomeration for iron mine material
Sintering generates a large amount of smog or flue gas, and occurs on the problem of air born pollution and influencing surrounding operating personnel health
Problem.
As depicted in figs. 1 and 2, preheating furnace 2 preheats fuel gas, specifically can be by setting in preheating burner hearth 3
Gas preheating pipe 4 is set, in sintering, used first gas inlet pipe 6 will be connected with the inlet end of gas preheating pipe 4, and
In sintering, used gas-pipe line 7 will be connected with the outlet air end of gas preheating pipe 4, then during sintering, it can
Combustion gas body is blown into from the first gas inlet pipe 6, then will be blown into gas preheating pipe 4 from the first gas inlet pipe 6, and be passed through preheating
Between hot-air in burner hearth 3 and gas preheating pipe 4 heat transmitting, can by preheating burner hearth 3 in gas preheating pipe 4 can
Combustion gas body is preheated, and the fuel gas in gas preheating pipe 4 can be preheating to 800-900 degrees Celsius, then by preheating
Fuel gas afterwards will be blown into gas-pipe line 7 from gas preheating pipe 4, then from being blown to from the first burner 11 in gas-pipe line 7
It burns.
And the first control valve can be set on the first gas inlet pipe 6 and in the first combustion air air inlet pipe 8, and then controlled
The circulation of fuel gas and combustion air processed.
As depicted in figs. 1 and 2, preheating furnace 2 preheats combustion air, specifically can be by being arranged in preheating burner hearth 3
Combustion air economizer bank 5, in sintering, used first combustion air air inlet pipe 8 will be connected with the inlet end of flammable wind economizer bank 5
It is logical, and used combustion air conduit 9 will be connected with the outlet air end of flammable wind economizer bank 5 in sintering, then in sintering
In the process, combustion air change can be blown into from the first combustion air air inlet pipe 8, then will blow into combustion air from the first combustion air air inlet pipe 8
In economizer bank 5, transmitted by the heat between the hot-air and combustion air economizer bank 5 in preheating burner hearth 3, it can be by preheating burner hearth
Combustion air in 3 pairs of combustion air economizer banks 5 preheats, and the fuel gas in combustion air economizer bank 5 can be preheating to 800-
900 degrees Celsius, then the combustion air after preheating will be blown into combustion air conduit 9 from combustion air economizer bank 5, then from combustion-supporting
It is combustion-supporting that progress at the first burner 11 is blown in wind conduit 9.
Further, this agglomeration for iron mine system without discharged gas fume can also include sintering feed transport device, sintering feed
Transport device is sintered by sintering feed transport device when being transmitted for constantly transporting sintering feed, sintering feed, is realized
The completion sintering process of serialization can carry out constantly repeating operation, guarantee the efficiency of sintering.The fortune of sintering feed transport device
Defeated direction is the side from the side of ignition furnace 1 towards preheating furnace 2, and the first burner 11 in ignition furnace 1 is set to top side, together
When the first burner 11 spitfire end be directed toward the sintering feed transportation surface of sintering feed transport device, can directly be sprayed using the first burner 11
Flame is sintered sintering feed out.
Referring to attached drawing 1 and attached drawing 2, further, 20 can be only set by the first burner 11, with original setting 54
Only the first burner 11 is compared, this mode not only reduces the number of the first burner 11, it is possible to reduce the usage amount of fuel gas, and
And also easily facilitate and sintering temperature is controlled, it can also avoid that sintering feed can be made in the case where the first burner 11 is excessive
Temperatures at localized regions it is higher, the sinter for generating turtle shell shape hinders heat transmitting, continues to burn to influence internal sintering feed
Knot.2 rows are set by 20 the first burners 11,10 burners of each row, two ranked first burner 11 along sintering feed transport device
Transmission direction setting, be that a row of front forms preliminary heating zone, a subsequent row forms sinter layer, to realize having for sintering
Effect carries out.And 10 the first burners 11 of each row are uniform along the direction perpendicular with sintering transport device transmission direction
Distribution, it is ensured that the sintering feed on sintering feed transportation surface on sintering transmitting device uniformly can be preheated and be sintered.
First burner 11 can select flame long and the strong burner of flame penetration power, when 11 flame of the first burner can be made to be sintered,
Solve that current the thermal efficiency is low, and sintering flame is short, penetrates hypodynamic problem.
Referring to attached drawing 1 and attached drawing 2, further, the second burner 12, the spray of the second burner 12 can be set in preheating furnace 2
When fiery, heat transfer can be led to, the air in preheating burner hearth 3 is heated, to realize that preheating burner hearth 3 can be to gas preheating
Pipe 4 and combustion air economizer bank 5 are preheated, and can further be realized to the fuel gas and combustion air in gas preheating pipe 4
Combustion air in economizer bank 5 is preheated.Second burner 12 is set to the upper side of preheating furnace 2, and makes the second burner 12
Downward, the spitfire end of the second burner 12 also needs the sintering feed transportation surface for being directed toward sintering feed transport device to spitfire end, in this way second
When burner 12 works, it can not only be heated, the sintering feed on sintering feed transportation surface can also be carried out for preheating burner hearth 3
Concurrent heating is further ensured that the abundant of sintering.As depicted in figs. 1 and 2,5 can be set by the second burner 12, design can in this way
So that adequately preheating to preheating burner hearth 3 in preheating furnace 2, and concurrent heating is carried out to sintering feed, and using less
Second burner 12, can also reduce the usage amount of fuel gas, can avoid the waste of fuel gas resource, burn second
When mouth 12 is worked, 3 the second burners 12 only need to can be opened, preheating temperature can be made to reach 800-900 DEG C, in addition
2 the second burners 12 conducts are spare, in order to which in 1-2 wherein, only when something goes wrong, preheating furnace 2 is still able to the second burners 12
It is normally carried out work.As the first burner 11, the second burner 12 can also use flame long and the strong burner of flame penetration power,
When 12 flame of the second burner can be made to be preheated, the thermal efficiency it is higher, preheating and concurrent heating flame it is longer, penetration power foot.
First burner 11 can be set there are two inlet end, be the first gas inlet end and the first flammable wind air inlet respectively
End, the first gas inlet end are connected with gas-pipe line 7, and the first flammable wind inlet end is connected with combustion air conduit 9.
Second burner 12 can be set there are two inlet end, be the second gas inlet end and the second flammable wind air inlet respectively
End, the second gas inlet end are provided with and communicated with the second gas inlet pipe 13, and the second flammable wind inlet end can be provided with and communicated with the
Two combustion air air inlet pipe 14 are passed through fuel gas by the second gas inlet pipe 13, while passing through the second combustion air air inlet pipe 14
It is passed through combustion-supporting gas, the second burner 12 can be made to jet out flames, carries out preheating and concurrent heating.Second coal gas blast pipe 13 and second helps
The second control valve can be set in combustion wind air inlet pipe 14, the second coal gas blast pipe 13 and second is controlled by the second control valve
The folding of combustion air air inlet pipe 14.
Fuel gas above-mentioned can select blast furnace gas, coal gas of converter or natural gas as fuel, and combustion air can be with
Select air.
Bellows are also provided in sintering feed transport device, bellows are set as multiple, and in ignition furnace 1 and preheating furnace
There is setting at 2, the flue gas that the negative pressure that bellows are formed can generate the first burner 11 and the second burner 12 is taken out to sintered surface, burns
Flue is provided on the downside of ramming material transport device, the outlet side of bellows is connected with flue, and flue is connected at deduster and carries out
Processing, further realizes no discharged gas fume of the invention.In sintering, the first burner 11 directly carries out the burning of agglomeration for iron mine material
Hot fume is absorbed into sintered sintering using the wind pressure that bellows generate when carrying out concurrent heating using the second burner 12 by sintering
On material, to realize carry out concurrent heating.
Above-mentioned mode is configured, and compared with existing sintering system, is had the following effects:
1, control can be adjusted in the first burner 11 of ignition furnace 1 and the second burner 12 of preheating furnace 2 according to production needs,
Ensure lasting and quality the stabilization of sinter production.
2, it is provided with gas valve on each first burner 11 and the second burner 12, it is safer in ignition operation
Reliably, when having ignition condition, a gas valve need to be slightly only opened, after ignition is normal, as needed gradually
Successively open the burnt gas valve of other the first burners 11, the control of temperature need to only adjust separately coal gas, the flow of air can spirit
Control living, sintering 10 internal furnace temperature of burner hearth can ensure that 1000-1250 DEG C；
3, ignition furnace 1 and preheating furnace 2 can realize the control, adjusting and centralized control of single burner, light a fire very convenient, prevent
The security risks such as back draft, production operation, control are simple；
4, preheating furnace 2 has extraordinary pre-heat effect, and 5 the second burners 12 need to open 3 in normal production, coal after preheating
The air themperature in gas temperature and combustion air economizer bank 5 in gas economizer bank 4 can guarantee at 800-900 DEG C, and adjust control
It makes very convenient；
5, in the dosage of coal gas, when full production, gas flow is between 11000-14000m3/h, total dosage of per tour
Between 88000-112000, ignition furnace 1 originally in full production, gas flow between 12000-15000m3/h,
Total dosage of per tour is between 96000-120000m3/ classes, and gas saving is in 10%-15%；
6, the project comes into operation so far from being completed, and operation conditions is good, and indices are stablized, and greatly reduces employee in operation
Labor intensity, it is ensured that safety, production it is continual and steady；
7, ignition furnace 1 and preheating furnace 2 are carried out rationally due to thermal efficiency height, and to the quantity of the first burner 11 and the second burner 12
Control, in terms of the usage amount of coal gas can gas saving 10%-15% or so, be averaged 98000 m3/ classes of gas using quantity with per tour
It calculates, the dosage of one day three class are as follows: 98000 × 3=294000m3/ days, monthly calculated by 28 days, one month dosage are as follows:
294000 × 28=8232000m3/ days, 1 year dosage are as follows: 8232000 × 12=98784000m3/h, then 1 year gas using quantity
98784000 × 10%=9878400m3/a can be saved on the basis of the original, according to every 4.8m3 generate electricity 0.5 yuan of 1KWh and electricity price/
KWh is calculated, and year generates economic benefit (9878400 ÷ 4.8) × 0.5=102.9 ten thousand yuan, can greatly save production cost.
Although reference be made herein to invention has been described for multiple explanatory embodiments of the invention, however, it is to be understood that
Those skilled in the art can be designed that a lot of other modification and implementations, these modifications and implementations will fall in this Shen
It please be within disclosed scope and spirit.More specifically, disclose in the application, drawings and claims in the range of, can
With the building block and/or a variety of variations and modifications of layout progress to theme combination layout.In addition to building block and/or layout
Outside the modification and improvement of progress, to those skilled in the art, other purposes also be will be apparent.
Claims (10)
1. a kind of agglomeration for iron mine system of no discharged gas fume, it is characterised in that: including preheating furnace (2) and for the point of agglomeration for iron mine
Stove (1), the preheating burner hearth (3) of the preheating furnace (2) is interior to be equipped with gas preheating pipe (4) and combustion air economizer bank (5), the coal
The inlet end of gas economizer bank (4) is communicated with the first gas inlet pipe (6), and the outlet side of the gas preheating pipe (4) is communicated with coal
Airway (7), the inlet end of the combustion air economizer bank (5) are communicated with the first combustion air air inlet pipe (8), the combustion air preheating
The outlet side of pipe (5) is communicated with combustion air conduit (9), and the first burner is equipped in the sintering burner hearth (10) of the ignition furnace (1)
(11), the gas-pipe line (7) and combustion air conduit (9) are connected to the inlet end of the first burner (11).
2. the agglomeration for iron mine system of no discharged gas fume according to claim 1, it is characterised in that: further include sintering feed transport
Device, direction of the sintering feed transport device in the sintering system along ignition furnace (1) to preheating furnace (2) are driven,
First burner (11) is set to the top of ignition furnace (1), and the spitfire end of first burner (11) downward and is directed toward institute
State the sintering feed transportation surface of sintering feed transport device.
3. the agglomeration for iron mine system of no discharged gas fume according to claim 2, it is characterised in that: first burner (11)
20 are set as, 20 first burners (11) are set as two rows of, and described two ranked first burner (11) transports along with sintering feed
The perpendicular transverse plane distribution of defeated device transmission direction.
4. the agglomeration for iron mine system of no discharged gas fume according to claim 2, it is characterised in that: in the preheating furnace (2)
Equipped with the second burner (12), second burner (12) is for heating preheating burner hearth (3).
5. the agglomeration for iron mine system of no discharged gas fume according to claim 4, it is characterised in that: second burner (12)
It is set to the upper side of preheating furnace (2), the spitfire end of second burner (12) downward and is directed toward the sintering feed transport dress
The sintering feed transportation surface set.
6. the agglomeration for iron mine system of no discharged gas fume according to claim 5, it is characterised in that: second burner (12)
5 are set as, and in the upper side of preheating furnace (2) along the transverse plane perpendicular with sintering feed transport device transmission direction
It is uniformly distributed.
7. the agglomeration for iron mine system of no discharged gas fume according to claim 6, it is characterised in that: first burner and
Two burners are flame length and the strong burner of flame penetration power.
8. the agglomeration for iron mine system of no discharged gas fume according to claim 4, it is characterised in that: second burner (12)
Inlet end be connected with the second gas inlet pipe (13) and the second combustion air air inlet pipe (14).
9. the agglomeration for iron mine system of no discharged gas fume according to claim 8, it is characterised in that: second gas inlet
The second control valve is equipped in pipe (13) and the second combustion air air inlet pipe (14).
10. the agglomeration for iron mine system of no discharged gas fume according to claim 1, it is characterised in that: first coal gas into
The first control valve is equipped in tracheae (6) and the first combustion air air inlet pipe (8).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811557889.8A CN109708474A (en) | 2018-12-19 | 2018-12-19 | Agglomeration for iron mine system without discharged gas fume |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811557889.8A CN109708474A (en) | 2018-12-19 | 2018-12-19 | Agglomeration for iron mine system without discharged gas fume |
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| Publication Number | Publication Date |
|---|---|
| CN109708474A true CN109708474A (en) | 2019-05-03 |
Family
ID=66256888
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811557889.8A Pending CN109708474A (en) | 2018-12-19 | 2018-12-19 | Agglomeration for iron mine system without discharged gas fume |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117367146A (en) * | 2023-12-06 | 2024-01-09 | 秦皇岛新特科技有限公司 | Preheating device and method for ball material before sintering |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2415325Y (en) * | 2000-04-03 | 2001-01-17 | 冶金工业部长沙冶金设计研究院 | Double preheated sinter ignition furnace |
| CN103667685A (en) * | 2013-12-27 | 2014-03-26 | 中冶长天国际工程有限责任公司 | Series preheating method and series preheating system for coal gas of sintering ignition furnace |
| CN104964563A (en) * | 2015-04-15 | 2015-10-07 | 安徽诚铭热能技术有限公司 | Self-preheating type sintering ignition furnace |
| CN106090918A (en) * | 2016-07-06 | 2016-11-09 | 安徽诚铭热能技术有限公司 | A kind of sintering ignition furnace preheater |
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2018
- 2018-12-19 CN CN201811557889.8A patent/CN109708474A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2415325Y (en) * | 2000-04-03 | 2001-01-17 | 冶金工业部长沙冶金设计研究院 | Double preheated sinter ignition furnace |
| CN103667685A (en) * | 2013-12-27 | 2014-03-26 | 中冶长天国际工程有限责任公司 | Series preheating method and series preheating system for coal gas of sintering ignition furnace |
| CN104964563A (en) * | 2015-04-15 | 2015-10-07 | 安徽诚铭热能技术有限公司 | Self-preheating type sintering ignition furnace |
| CN106090918A (en) * | 2016-07-06 | 2016-11-09 | 安徽诚铭热能技术有限公司 | A kind of sintering ignition furnace preheater |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117367146A (en) * | 2023-12-06 | 2024-01-09 | 秦皇岛新特科技有限公司 | Preheating device and method for ball material before sintering |
| CN117367146B (en) * | 2023-12-06 | 2024-02-13 | 秦皇岛新特科技有限公司 | Preheating device and method for ball material before sintering |
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Application publication date: 20190503 |