CN207738793U - A kind of external-heat coal-based direct reduction iron reduction shaft furnace room of pressure-adjustable - Google Patents
A kind of external-heat coal-based direct reduction iron reduction shaft furnace room of pressure-adjustable Download PDFInfo
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- CN207738793U CN207738793U CN201721802610.9U CN201721802610U CN207738793U CN 207738793 U CN207738793 U CN 207738793U CN 201721802610 U CN201721802610 U CN 201721802610U CN 207738793 U CN207738793 U CN 207738793U
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- reduction
- room
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- gas collection
- pressure
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Abstract
The utility model is related to a kind of external-heat coal-based direct reduction iron reduction shaft furnace rooms of pressure-adjustable, the cavity of the reduction room is uniformly divided into the holes n+1 along long to by n reduction room partition wall, 2~4 channel of gas collection in reduction room both ends and/or internal setting per hole, the corresponding reduction room of gas leadout hole connection that channel of gas collection passes through side；The top of each channel of gas collection respectively with converge air flue and be connected to, bottom is connected to reduction room respectively；Furnace roof above corresponding each channel of gas collection sets pressure regulating hole respectively, and the top exit of each channel of gas collection sets adjustable plate or adjusting brick respectively.The utility model can adjust reduction chamber pressure according to material and production status, reduction room reaction rate be improved, to improve production capacity.
Description
Technical field
The utility model is related to the external-heat coal bases of direct reduced iron technical field more particularly to a kind of pressure-adjustable directly also
Former iron reduction shaft furnace room.
Background technology
Sponge iron chemical composition stability, impurity content is few, is the smelting of high-quality the replacement source of iron and special steel, high-quality steel of steel scrap
Refine raw material.The direct reduction iron making technique of production sponge iron is divided into gas base directly reducing and coal-based direct reduction, and China is one
A more coals lack the country of gas, and natural gas resource is limited, higher price, and coal-based direct reduction iron technique more meets the specific state of China
Feelings.Wherein it is possible to which quantity-produced external-heat coal base shaft furnace process has, crude fuel is adaptable, reducing atmosphere is good, product is golden
Belong to the advantages that rate is high, has become the capital equipment device of production direct reduced iron.
In coal base shaft furnace, the effect of carbon direct-reduction is very limited, and being only limitted to be in direct contact Shi Caiyou with iron ore can
Can, once they separate or are formed reduzate, it is then not possible to there is direct-reduction.Coal-based direct reduction is mainly mainly with indirect
Based on reduction, that is, fixed carbon gasifies generate CO first, and then CO is as practical reducing agent participation reduction reaction, therefore shaft furnace
In CO concentration reaction rate is had a major impact.Perpendicular furnace pressure is bigger, and CO concentration is bigger, and reduction reaction speed is faster.But
It is since coal base shaft furnace is made of laying fireproof bricks, there are many internal brickwork joint, when restoring room pressure more than certain value, meeting
There is a situation where reduction indoor gas to be leaked to combustion chamber by brickwork joint.In addition, the particle diameter distribution of the indoor material of reduction, bed of material resistance
Power and the trepanning situation of channel of gas collection can all have an impact reduction room pressure.Therefore controlling reduction room pressure seems
It is particularly important.
Existing coal-based direct reduction iron reduction shaft furnace room lacks pressure regulating measure, is difficult according to object in production operation
Expect that situation and the condition of production adjust furnace pressure.
Invention content
The utility model provides a kind of external-heat coal-based direct reduction iron reduction shaft furnace room of pressure-adjustable, can be according to object
Material and production status adjust reduction chamber pressure, reduction room reaction rate are improved, to improve production capacity.
In order to achieve the above object, the utility model is realized using following technical scheme：
A kind of external-heat coal-based direct reduction iron reduction shaft furnace room of pressure-adjustable, including reduction room, the reduction room is from upper
It is divided into preheating section, reduction section and cooling section under, preheating section is equipped with the tedge for converging air flue connection furnace roof, and reduction ceiling portion is set
Sealed feed inlet, reduction room bottom, which is set, seals material mouth；The cavity of the reduction room uniformly divides along long to by n reduction room partition wall
At the holes n+1,2~4 channel of gas collection in reduction room both ends and/or internal setting per hole, channel of gas collection is exported by the gas of side
The corresponding reduction room of hole connection；The top of each channel of gas collection respectively with converge air flue and be connected to, bottom is connected to reduction room respectively；It is corresponding
Furnace roof above each channel of gas collection sets pressure regulating hole respectively, and the top exit of each channel of gas collection sets adjustable plate or tune respectively
Save brick.
The pressure regulating hole is in shaft furnace during normal production by adjusting port lid sealing.
The adjustable plate is heat-resisting steel sheet and plate, and adjusting brick is refractory brick.
The gas leadout hole is multiple to being arranged along reduction room height.
It is lower mouth width narrow taper suitable for reading that each hole, which restores room or corresponding reduction section in width direction, and corresponding metope gradient is
1：150~200.
Compared with prior art, the utility model has the beneficial effects that：
1) it sets channel of gas collection to be connected to reduction room by gas leadout hole, the indoor materialbeds comminution of reduction can be reduced, effectively
Reduce reduction gas pressure inside；Reduction chamber pressure can be adjusted according to material and production status simultaneously, improve the reaction of reduction room
Rate, to improve production capacity；
2) it when channel of gas collection is blocked by substances such as tar or materials in process of production, can be dredged by adjustment hole
Channel of gas collection prevents from causing to restore the accidents such as tail gas leakage because reduction room pressure is excessively high.
Description of the drawings
Fig. 1 is a kind of main view of the external-heat coal-based direct reduction iron reduction shaft furnace room of pressure-adjustable described in the utility model
Figure.
Fig. 2 is the A-A views in Fig. 1.
Fig. 3 is the B-B views in Fig. 2.
In figure：1. combustion chamber 2., which restores room 3., converges 4. channel of gas collection of air flue, 5. gas leadout hole, 6. channel of gas collection
7. sealed feed inlet of outlet at bottom, 8. tedge 9. restores 10. preheating section of room partition wall, 11. reduction section, 12. cooling section 13.
It seals 14. channel of gas collection top exit 15. of material mouth cooling stomata 16. and gos deep into the adjusting of 17. pressure regulating hole 18. of coal scuttle
Plate/adjusting brick 19. adjusts port lid 21. and restores the reduction room two of room 1
Specific implementation mode
Specific embodiment of the present utility model is described further below in conjunction with the accompanying drawings：
As shown in Figure 1-Figure 3, the external-heat coal-based direct reduction iron reduction shaft furnace of a kind of pressure-adjustable described in the utility model
Room, including reduction room 2, the reduction room 2 are divided into preheating section 10, reduction section 11 and cooling section 12 from top to bottom, and preheating section 10 is set
Have and converge the tedge 8 that air flue 3 is connected to furnace roof, 2 top of reduction room sets sealed feed inlet 7, and reduction 2 bottom of room, which is set, seals material mouth
13；The cavity of the reduction room 2 is uniformly divided into the holes n+1 along long to by n reduction room partition wall 9, and room both ends and/or interior are restored per hole
2~4 channel of gas collection 4, the corresponding reduction room 2 of the connection of gas leadout hole 5 that channel of gas collection 4 passes through side is arranged in portion；Each gas collection is logical
The top in road 4 respectively with converge air flue 3 and be connected to, bottom is connected to reduction room 2 respectively；The stove of 4 top of corresponding each channel of gas collection
Top sets pressure regulating hole 17 respectively, and the top exit of each channel of gas collection 4 sets adjustable plate or adjusting brick 18 respectively.
The pressure regulating hole 17 is sealed by adjusting port lid 19 during normal production in shaft furnace.
The adjustable plate is heat-resisting steel sheet and plate, and adjusting brick is refractory brick.
The gas leadout hole 5 is high multiple to being arranged along reduction room 2.
It is lower mouth width narrow taper suitable for reading that each hole, which restores room 2 or corresponding reduction section 11 in width direction, and corresponding metope is oblique
Degree is 1：150~200.
A kind of operation principle of the external-heat coal-based direct reduction iron reduction shaft furnace room of pressure-adjustable described in the utility model is such as
Under:Coal-based direct reduction iron shaft furnace is during normal production, and coal or the mixed material of semicoke and pellet are from reduction 2 top coal of room
Box installed enters, and enters in reduction room 2 through stretching into coal scuttle 16.Reduction 2 both sides of room are combustion chamber 1, and fuel gas is in combustion chamber flue
The heat of interior burning, generation passes to the mixed material in reduction room 2 by furnace wall, and with the decline of mixed material, material is first
It is preheated in preheating section 10, and then enters reduction section 11, material issues raw reduction reaction, coal or semicoke quilt in high temperature action at this time
It gradually uses up, pellet is gradually reduced into sponge iron, while generating a large amount of reduction tail gas, and main component is CO and CO2.Reduction
Tail gas transversely flows in reduction room 2, enters channel of gas collection 4 through gas leadout hole 5, is flowed up in channel of gas collection 4, is passed through
Overregulate enter 2 top of reduction room after brick or adjustable plate 18 converge air flue 3, converge converge in air flue 3 after enter and rise
Pipe 8 exports to the gas collecting tube outside stove through tedge 8, subsequently into reduction exhaust gas purification system.And mixed material is in reduction section 11
It is perpendicular to enter the discharge after cooling section 12 is cooled of cooling section 12, sponge iron and carbon residue after total overall reaction generation sponge iron and carbon residue
Stove.
During normal production, it adjusts port lid 19 to close, reduction exhaust gas leak or extraneous air is avoided to enter reduction room 2；When
It when needing to adjust reduction 2 internal pressure of room, opens and adjusts port lid 19, change adjusting brick or adjusting with hook from adjustment hole 17
The quantity of plate 18 or position change the size of channel of gas collection top exit 14, to change reduction room pressure.In addition,
In production process, when channel of gas collection 4 can also open tune by tar or feed blocking when leading to hypertonia in reduction room 2
Knothole lid 19 dredges channel of gas collection 4, so as to improve furnace pressure with tools such as elongated heat-resisting reinforcing bars from adjustment hole 17.
Following embodiment is implemented under premised on technical solutions of the utility model, gives detailed embodiment
With specific operating process, but the scope of protection of the utility model is not limited to following embodiments.Side used in following embodiments
Method is conventional method unless otherwise instructed.
【Embodiment】
As shown in Figure 1-Figure 3, it is a kind of external-heat coal-based direct reduction iron reduction shaft furnace of pressure-adjustable described in the present embodiment
The structural schematic diagram of room, figure include combustion chamber 1 and reduction room 2, and every reduction room 2 is divided into holes reduction by midfeather 9
Room (reduction room 1 and reduction room 2 22), per hole, the both ends of reduction room 21,22 and centre are respectively equipped with channel of gas collection 4, restore
It is connected to by gas leadout hole 5 between room 2 and channel of gas collection 4.Gas leadout hole 5 is arranged along reduction room height to every 0.1m~2m
One, position of opening and spacing are related with the materialbeds comminution of corresponding position.The height of coal gas leadout hole 5 is 20~200mm.
Reduction room 2 is divided into preheating section 10, reduction section 11 and cooling section 12 from top to bottom, and the width direction of reduction room 2 is
Up-narrow and down-wide taper avoids material from declining the phenomenon that gets stuck in the process.Channel of gas collection outlet at bottom 6 and reduction room 2
Cooling section 12 communicates, and can will enter the material in channel of gas collection 4 and be then exhausted from reduction room 2.The top of preheating section 10 is along long to setting
Have and converge air flue 3, converges air flue 3 and be made of preheating section grooves on two sides；The coal bin 16 that gos deep into positioned at 7 lower section of sealed feed inlet is in
Converge the middle part of air flue 3, converge air flue 3 at this is formed by going deep into coal bin side wall and preheating section groove, entirely converges 3 bottom of air flue
Downward self-assembling formation opening.Channel of gas collection top exit 14 is connected to air flue 3 is converged, in order to also Primordial Qi restore room from every hole
One end through tedge 8 smoothly export.Adjusting brick or adjustable plate 18, adjusting brick or tune are additionally provided at channel of gas collection top exit 14
Section plate 18 is made of materials such as refractory brick, heat-resisting steel sheet and plates.It is set at the furnace roof of 14 top corresponding position of channel of gas collection top exit
There is pressure regulating hole 17, adjustment hole 17, which is equipped with, adjusts port lid 19.
The preferable specific implementation mode of the above, only the utility model, but the scope of protection of the utility model is not
Be confined to this, any one skilled in the art within the technical scope disclosed by the utility model, according to this practicality
Novel technical solution and its utility model design are subject to equivalent substitution or change, should all cover the protection model in the utility model
Within enclosing.
Claims (5)
1. a kind of external-heat coal-based direct reduction iron reduction shaft furnace room of pressure-adjustable, including reduction room, the reduction room oneself up to
Under be divided into preheating section, reduction section and cooling section, preheating section is equipped with the tedge for converging air flue connection furnace roof, and reduction ceiling portion sets close
Feed inlet is sealed, reduction room bottom, which is set, seals material mouth；It is characterized in that, the cavity of the reduction room restores room along long to by n
Partition wall is uniformly divided into the holes n+1, and per hole, 2~4 channel of gas collection in reduction room both ends and/or internal setting, channel of gas collection pass through side
The corresponding reduction room of gas leadout hole connection；The top of each channel of gas collection respectively with converge air flue and be connected to, bottom respectively with reduction
Room is connected to；Furnace roof above corresponding each channel of gas collection sets pressure regulating hole, the top exit difference of each channel of gas collection respectively
If adjustable plate or adjusting brick.
2. a kind of external-heat coal-based direct reduction iron reduction shaft furnace room of pressure-adjustable according to claim 1, feature exist
In the pressure regulating hole is in shaft furnace during normal production by adjusting port lid sealing.
3. a kind of external-heat coal-based direct reduction iron reduction shaft furnace room of pressure-adjustable according to claim 1, feature exist
In the adjustable plate is heat-resisting steel sheet and plate, and adjusting brick is refractory brick.
4. a kind of external-heat coal-based direct reduction iron reduction shaft furnace room of pressure-adjustable according to claim 1, feature exist
In the gas leadout hole is multiple to being arranged along reduction room height.
5. a kind of external-heat coal-based direct reduction iron reduction shaft furnace room of pressure-adjustable according to claim 1, feature exist
In it is lower mouth width narrow taper suitable for reading that each hole, which restores room or corresponding reduction section in width direction, and corresponding metope gradient is 1：150
~200.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721802610.9U CN207738793U (en) | 2017-12-21 | 2017-12-21 | A kind of external-heat coal-based direct reduction iron reduction shaft furnace room of pressure-adjustable |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721802610.9U CN207738793U (en) | 2017-12-21 | 2017-12-21 | A kind of external-heat coal-based direct reduction iron reduction shaft furnace room of pressure-adjustable |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207738793U true CN207738793U (en) | 2018-08-17 |
Family
ID=63119148
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721802610.9U Withdrawn - After Issue CN207738793U (en) | 2017-12-21 | 2017-12-21 | A kind of external-heat coal-based direct reduction iron reduction shaft furnace room of pressure-adjustable |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207738793U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107893139A (en) * | 2017-12-21 | 2018-04-10 | 中冶焦耐(大连)工程技术有限公司 | A kind of external-heat coal-based direct reduction iron reduction shaft furnace room of pressure-adjustable |
-
2017
- 2017-12-21 CN CN201721802610.9U patent/CN207738793U/en not_active Withdrawn - After Issue
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107893139A (en) * | 2017-12-21 | 2018-04-10 | 中冶焦耐(大连)工程技术有限公司 | A kind of external-heat coal-based direct reduction iron reduction shaft furnace room of pressure-adjustable |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20180817 Effective date of abandoning: 20230321 |
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| AV01 | Patent right actively abandoned |
Granted publication date: 20180817 Effective date of abandoning: 20230321 |
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| AV01 | Patent right actively abandoned | ||
| AV01 | Patent right actively abandoned |