CN108707716A - A kind of heating system and heating means of external-heat ultra-large volume coal base upright furnace - Google Patents
A kind of heating system and heating means of external-heat ultra-large volume coal base upright furnace Download PDFInfo
- Publication number
- CN108707716A CN108707716A CN201810332321.XA CN201810332321A CN108707716A CN 108707716 A CN108707716 A CN 108707716A CN 201810332321 A CN201810332321 A CN 201810332321A CN 108707716 A CN108707716 A CN 108707716A
- Authority
- CN
- China
- Prior art keywords
- gas
- chamber
- regenerative chamber
- air flue
- air
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21B—MANUFACTURE OF IRON OR STEEL
- C21B13/00—Making spongy iron or liquid steel, by direct processes
- C21B13/02—Making spongy iron or liquid steel, by direct processes in shaft furnaces
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E20/00—Combustion technologies with mitigation potential
- Y02E20/34—Indirect CO2mitigation, i.e. by acting on non CO2directly related matters of the process, e.g. pre-heating or heat recovery
Abstract
The present invention relates to a kind of heating systems and heating means of external-heat ultra-large volume coal base upright furnace, and the heating system includes poor gas heating system and rich gas heating system；Poor gas heating system includes regenerative chamber, combustion chamber, horizontal air flue and converges air flue, and rich gas heating system includes regenerative chamber, combustion chamber, horizontal air flue, converges the brick gas passage sprayed under air flue, rich gas and horizontally-arranged brick gas passage that rich gas side enters；Combustion chamber is along height to being divided at least two sectional combustion room, and regenerative chamber is along high to being divided at least three independence regenerative chamber；Poor gas heating system is individually or simultaneously used with rich gas heating system.The present invention disclosure satisfy that the demand of coal base upright furnace enlargement, while improving reduction room height to increase production capacity, ensure that uniformity of the upright furnace height to heating, be conducive to the quality and grade that improve sponge iron；Its hot working efficiency is high, operates easy to adjust, easily controllable ignition temperature and speed, more conducively environmentally friendly.
Description
Technical field
The present invention relates to metallurgical technology field more particularly to a kind of external-heat ultra-large volumes for producing direct reduced iron
The heating system and heating means of coal base upright furnace.
Background technology
Direct reduction iron making technique (DRI) refer under the fusion temperature less than iron ore, by restoring in the solid state,
Iron ore refines the technical process at metallic iron, and product is called sponge iron.Sponge iron is the necessary raw material for smelting excellent special steel.So
And the yield of China's direct reduced iron is not as good as million tons, it is average far below the world less than the 1% of world's direct reduced iron yield
It is horizontal.
Direct reduction iron making is divided into two kinds of gas base directly reducing and coal-based direct reduction by technique, and main equipment is divided into back
Rotary kiln, rotary hearth furnace, retort, tube furnace and fluid bed etc..Currently, 90% or more direct reduced iron is all to use gas base in the world
What reduction method was produced, but China's natural gas resource is limited and higher price, gas-based reduction technique are not suitable for the more coals in China
The national conditions of few gas；And all there is high energy consumption, production process in traditional coal-based rotary kiln technique, rotary hearth furnace process, tunnel oven technique
Not easy to control, the problems such as product quality grade is low.
External heated shaft furnace direct-reduction process (KM methods) is produced with shaft furnace form, and studies in China person is to external-heat coal base
Certain research has also been made in direct-reduction technique, such as the patent of Publication No. CN101832706A《External combustion tube type direct reduction is perpendicular
Stove》, Publication No. CN201166513 patent《Coal base direct-reduced》, Publication No. CN 204529897U
Patent《A kind of external-heat coal base shaft furnace producing direct reduced iron》Deng.In above-mentioned technical proposal, furnace structure is excessively simple
It is single, and limited by furnace body intensity, the height for restoring room cannot be too high, causes production capacity limited, cannot be satisfied the demand of enlargement.
Invention content
The present invention provides a kind of heating systems and heating means of external-heat ultra-large volume coal base upright furnace, disclosure satisfy that
The demand of coal base upright furnace enlargement ensure that upright furnace height to heating while improving reduction room height to increase production capacity
Uniformity, be conducive to improve sponge iron quality and grade；Its hot working efficiency is high, operates easy to adjust, easily controllable burning
Temperature and speed can reduce high temperature dot, more conducively environmentally friendly to reduce the generation of NOx.
In order to achieve the above object, the present invention is realized using following technical scheme：
A kind of heating system of external-heat ultra-large volume coal base upright furnace, including poor gas heating system and rich gas heating
System；The poor gas heating system includes regenerative chamber, combustion chamber, horizontal air flue and converges air flue, rich gas heating system
System include regenerative chamber, combustion chamber, horizontal air flue, converge the brick gas passage sprayed under air flue, rich gas and rich gas side enter it is horizontally-arranged
Brick gas passage, wherein the regenerative chamber, combustion chamber, horizontal air flue and converge air flue be both share；The combustion chamber along height to
It is divided at least two sectional combustion room, along height at least three independence regenerative chamber is divided into, each sectional combustion room leads to regenerative chamber respectively
It crosses corresponding horizontal air flue and connects corresponding independent regenerative chamber with air flue is converged；The brick gas passage sprayed under rich gas is set to lowermost part
The bottom of section combustion chamber, the top of lowest part segmentation combustion chamber and the top and bottom of remaining sectional combustion room set rich gas respectively
The horizontally-arranged brick gas passage that side enters；Poor gas heating system is individually or simultaneously used with rich gas heating system, each independent regenerative chamber
Different according to mode of heating use respectively as air regenerator or air regenerator and poor gas regenerative chamber.
The combustion chamber is along height to 2 sectional combustion rooms, i.e. top combustion chamber and lower combustion chamber are divided into, and regenerative chamber is along high
To being divided into 3 independent regenerative chambers, i.e. top regenerative chamber, middle part regenerative chamber and lower part regenerative chamber；Top passes through at the top of combustion chamber
Corresponding horizontal air flue is connected to the top of top regenerative chamber, the bottom of top combustion chamber and the top of lower combustion chamber with air flue is converged
By the horizontal air flue of correspondence and the top for converging air flue and being connected to middle part regenerative chamber, the top of lower combustion chamber passes through corresponding horizontal gas
Road connects the top of lower part regenerative chamber with air flue is converged；Lattice are set respectively in top regenerative chamber, middle part regenerative chamber and lower part regenerative chamber
Sub- brick, and the bottom of the bottom of top regenerative chamber, the bottom of middle part regenerative chamber and lower part regenerative chamber passes through corresponding bottom flue respectively
Connect corresponding waste gas valve；The bottom of lower combustion chamber sets the brick gas passage sprayed under rich gas, the top of top combustion chamber
If the horizontally-arranged brick gas passage in top that rich gas side enters, the bottom of top combustion chamber sets the horizontally-arranged brick coal gas in middle part that rich gas side enters
Road sets the horizontally-arranged brick gas passage in lower part that rich gas side enters at the top of lower combustion chamber.
The air regenerator and poor gas regenerative chamber are and spaced in sustained height.
The horizontally-arranged brick gas passage that the brick gas passage and rich gas side sprayed under the rich gas enters is using rich gas heating side
Rich gas main pipeline is connected when formula, compressed air main pipeline is connected when using poor gas mode of heating, as each sectional combustion
The auxiliary air of room is for access point；The access point of rich gas main pipeline is located on the outside of the protection wall of combustion chamber.
A kind of heating means of external-heat ultra-large volume coal base upright furnace based on the heating system, can be used poor gas
Heating, rich gas heating or poor gas cooperate with three kinds of mode of heatings of heating, three kinds of mode of heatings to be all made of segmentation combustion with rich gas
It burns, the mode of segmentation gas supply, heating gas medium is poor gas, rich gas or poor gas and rich gas.
A kind of heating means of the external-heat ultra-large volume coal base upright furnace, including：
1) it when coal base upright furnace individually uses poor gas mode of heating, is completed by poor gas heating system；It is changed same
Into the period, poor gas/air that coal base upright furnace is entered through wherein one or more independent regenerative chambers converges gas along corresponding
Road, horizontal air flue respectively enter the exhaust gas after corresponding sectional combustion room, burning and along corresponding horizontal air flue and converge air flue again
Into the other independent regenerative chamber of one or more, it is upright that coal base is then flowed out by corresponding bottom flue and waste gas valve
Stove；For 2 height into adjacent sectional combustion room, the sectional combustion room and underlying sectional combustion being located above are indoor
Gas flow is with horizontal air flue between the two for symmetrical axial symmetry flow；
2) it when coal base upright furnace individually uses rich gas mode of heating, is completed by rich gas heating system；It is changed same
Into the period, according to the needs of burning, brick gas passage and/or rich gas side that rich gas sprays under rich gas respectively enter horizontally-arranged
Brick gas passage enters combustion chamber, for combustion-supporting air through wherein one or more independent regenerative chambers, it is corresponding converge air flue and
Horizontal air flue enters combustion chamber, and the exhaust gas after burning is by corresponding horizontal air flue and converges air flue into other one or more
A independent regenerative chamber；2 height into adjacent sectional combustion room, fire by the sectional combustion room and the underlying segmentation that are located above
Indoor gas flow is burnt with horizontal air flue between the two for symmetrical axial symmetry flow；
3) when coal base upright furnace cooperates with mode of heating using poor gas with rich gas, poor gas heating system adds with rich gas
Hot systems cooperate；Within the same commutation cycle, poor gas heating or rich is respectively adopted in the sectional combustion room of different height
Heated by gas, while entering the type of the indoor gas medium of different height sectional combustion as needed, determination is all rising gas
The independent regenerative chamber of stream is still only to be used as air regenerator as poor gas regenerative chamber and air regenerator；2 height are to adjacent
Sectional combustion room in, the sectional combustion room that is located above and the indoor gas flow of underlying sectional combustion with the two it
Between horizontal air flue be symmetrical axial symmetry flow.
The heating means of a kind of external-heat ultra-large volume coal base upright furnace, within the same commutation cycle, with height
It is identical with row's indoor airflow direction of independence accumulation of heat, that is, be all ascending air or be all down current；Neighbouring independence
The indoor airflow direction of accumulation of heat is then located at lower section on the contrary, when the indoor air-flow of independent accumulation of heat being located above is ascending air
The indoor air-flow of independent accumulation of heat be down current；It is all the only of the different height of ascending air when using rich gas heating
Vertical regenerative chamber can be used as air regenerator air-supplied simultaneously；When using poor gas heating when, be all ascending air same row it is only
Vertical regenerative chamber is as poor gas regenerative chamber and air regenerator, and air regenerator is for feeding combustion air, poor gas regenerative chamber
For feeding poor gas；When cooperateed with rich gas using poor gas heat when, be all the independent regenerative chamber of ascending air according to need
To enter the gas medium type in different height independent burning room, determine that the independent regenerative chamber of different height is as poor gas
Regenerative chamber and air regenerator are still only used as air regenerator.
Compared with prior art, the beneficial effects of the invention are as follows：
1) disclosure satisfy that the upright furnace enlargement of coal base demand (reduction room volume can be expanded to 2 times of existing volume with
On), while improving reduction room height to increase production capacity, it ensure that uniformity of the upright furnace height to heating, improve sponge
The quality and grade of iron；
2) regenerative chamber is capable of the air of the waste heat preheated burning of recovered flue gas, and hot working efficiency is high；
3) easy to operate, air flow rate is adjustable, easily controllable ignition temperature and speed, reduce high temperature dot, to reduce NOx
Generation, it is more conducively environmentally friendly.
Description of the drawings
Fig. 1 is the main view sectional view of the heating system of external-heat ultra-large volume coal base upright furnace of the present invention.
Fig. 2 is the A-A views in Fig. 1.
Fig. 3 is the B-B views in Fig. 2.
Fig. 4 a are gas streams when coal base upright furnace of the present invention individually uses this in poor gas mode of heating to exchange
To schematic diagram.
Fig. 4 b are gas streams when coal base upright furnace of the present invention individually uses exchange next time in poor gas mode of heating
To schematic diagram.
Fig. 5 a are gas streams when coal base upright furnace of the present invention individually uses this in rich gas mode of heating to exchange
To schematic diagram.
Fig. 5 b are gas streams when coal base upright furnace of the present invention individually uses exchange next time in rich gas mode of heating
To schematic diagram.
When Fig. 6 a are that coal base upright furnace of the present invention cooperates with this in mode of heating to exchange using poor gas with rich gas
Gas flow schematic diagram one (high be poor gas heating to adjacent upper and lower sectional combustion room).
When Fig. 6 b are that coal base upright furnace of the present invention uses poor gas and next time exchanges in rich gas collaboration mode of heating
Gas flow schematic diagram one (high be rich gas heating to adjacent upper and lower sectional combustion room).
When Fig. 6 c are that coal base upright furnace of the present invention cooperates with this in mode of heating to exchange using poor gas with rich gas
Gas flow schematic diagram two (it is high to adjacent top sectional combustion room be poor gas heating, lower section sectional combustion room is rich coal
Gas heats).
When Fig. 6 d are that coal base upright furnace of the present invention uses poor gas and next time exchanges in rich gas collaboration mode of heating
Gas flow schematic diagram two (high be poor gas heating to the adjacent room of sectional combustion up and down).
In figure：1. the combustion chamber tops lower combustion chamber 1-2. 1-1. combustion chamber 2. restores the room lower parts 2-1. and restores room 2-2.
Top restores regenerative chamber 4. lower parts bottom flue 4-1. in the tops regenerative chamber 3-3. in the middle part of 3. lower parts regenerative chamber 3-1. regenerative chamber 3-2. of room
5. furnace roof of regenerative chamber bottom flue 6. horizontal air flue 7. in the tops regenerative chamber bottom flue 4-3. converges gas in the middle part of regenerative chamber bottom flue 4-2.
What the horizontally-arranged brick gas passage 8-2. rich gas side in lower part that the horizontally-arranged brick gas passage 8-1. rich gas side that 8. rich gas side of road enters enters entered
The brick gas passage 10. sprayed under horizontally-arranged 9. rich gas of brick gas passage in top that the horizontally-arranged brick gas passage 8-3. rich gas side in middle part enters cools down
13. bottom of combustion chamber air of room 11. checker brick, 12. double-edged fine-toothed comb brick/poor gas introducing port or 14. top of combustion chamber of exhaust gas export mouth are useless
Conductance exports or air/poor gas introducing port
Specific implementation mode
The specific implementation mode of the present invention is described further below in conjunction with the accompanying drawings：
As shown in Figure 1-Figure 3, the heating system of a kind of external-heat ultra-large volume coal base upright furnace of the present invention, including it is poor
Gas heating system and rich gas heating system；The poor gas heating system includes regenerative chamber 3, combustion chamber 1, horizontal air flue 6
With converge air flue 7, the rich gas heating system includes regenerative chamber 3, combustion chamber 1, horizontal air flue 6, converges air flue 7, rich gas
The horizontally-arranged brick gas passage 8 that the brick gas passage 9 of lower spray and rich gas side enter, wherein the regenerative chamber 3, combustion chamber 1, horizontal air flue 6
It is that the two shares with air flue 7 is converged；The combustion chamber 1 is along height at least two sectional combustion room is divided into, and regenerative chamber 3 is along Gao Xiangfen
Be divided at least three independence regenerative chamber, each sectional combustion room respectively by the horizontal air flue 6 of correspondence and converge air flue 7 connect it is corresponding
Independent regenerative chamber；The brick gas passage 9 sprayed under rich gas is set to the bottom of lowest part segmentation combustion chamber, and lowest part is segmented combustion chamber
The top and bottom of top and remaining sectional combustion room sets the horizontally-arranged brick gas passage 8 that rich gas side enters respectively；Poor gas heating system
System is individually or simultaneously used with rich gas heating system, and each independent regenerative chamber is stored according to the different of mode of heating respectively as air
Hot cell or air regenerator and poor gas regenerative chamber use.
The combustion chamber 1, to 2 sectional combustion rooms, i.e. top combustion chamber 1-2 and lower combustion chamber 1-1 are divided into, is stored along height
Hot cell 3 is along height to being divided into 3 independent regenerative chambers, i.e. top regenerative chamber 3-3, middle part regenerative chamber 3-2 and lower part regenerative chamber 3-1；On
The top of portion combustion chamber 1-2 passes through the horizontal air flue of correspondence 6 and the top for converging air flue 7 and being connected to top regenerative chamber 3-3, top burning
The bottom of room 1-2 and the top of lower combustion chamber 1-1 are connected to middle part regenerative chamber 3-2 by the horizontal air flue of correspondence 6 with air flue 7 is converged
Top, the top of lower combustion chamber 1-1 passes through the horizontal air flue 6 of correspondence and converges the top that air flue 7 connects lower part regenerative chamber 3-1
Portion；Checker brick 11, and top regenerative chamber 3-3 are set in top regenerative chamber 3-3, middle part regenerative chamber 3-2 and lower part regenerative chamber 3-1 respectively
Bottom, the bottom of middle part regenerative chamber 3-2 and the bottom of lower part regenerative chamber 3-1 connected respectively by corresponding bottom flue 4 it is corresponding
Waste gas valve；The bottom of lower combustion chamber 1-1 sets the brick gas passage 9 sprayed under rich gas, and richness is set at the top of the 1-2 of top combustion chamber
The bottom of the horizontally-arranged brick gas passage 8-3 in top that coal gas side enters, top combustion chamber 1-2 set the horizontally-arranged brick coal gas in middle part that rich gas side enters
The horizontally-arranged brick gas passage 8-1 in lower part that rich gas side enters is set at the top of road 8-2, lower combustion chamber 1-1.
The air regenerator and poor gas regenerative chamber are and spaced in sustained height.
The horizontally-arranged brick gas passage 8 that the brick gas passage 9 and rich gas side sprayed under the rich gas enters is heated using rich gas
Rich gas main pipeline is connected when mode, is connected compressed air main pipeline when using poor gas mode of heating, is fired as each segmentation
The auxiliary air of room is burnt for access point；The access point of rich gas main pipeline is located on the outside of the protection wall of combustion chamber.
A kind of heating means of external-heat ultra-large volume coal base upright furnace based on the heating system, can be used poor gas
Heating, rich gas heating or poor gas cooperate with three kinds of mode of heatings of heating, three kinds of mode of heatings to be all made of segmentation combustion with rich gas
It burns, the mode of segmentation gas supply, heating gas medium is poor gas, rich gas or poor gas and rich gas.
A kind of heating means of the external-heat ultra-large volume coal base upright furnace, including：
1) it when coal base upright furnace individually uses poor gas mode of heating, is completed by poor gas heating system；It is changed same
Into the period, poor gas/air that coal base upright furnace is entered through wherein one or more independent regenerative chambers converges gas along corresponding
Road 7, horizontal air flue 6 respectively enter the exhaust gas after corresponding sectional combustion room, burning and along corresponding horizontal air flue 6 and converge again
Air flue 7 enters the other independent regenerative chamber of one or more, then flows out coal base by corresponding bottom flue 4 and waste gas valve
Upright furnace；2 height into adjacent sectional combustion room, the sectional combustion room that is located above in underlying sectional combustion room
Gas flow with horizontal air flue 6 between the two be symmetrical axial symmetry flow；
2) it when coal base upright furnace individually uses rich gas mode of heating, is completed by rich gas heating system；It is changed same
Into the period, according to the needs of burning, cross that brick gas passage 9 and/or rich gas side that rich gas sprays under rich gas respectively enter
Arrange brick gas passage 8 and enter combustion chamber 1, for combustion-supporting air through wherein one or more independent regenerative chambers, corresponding converge gas
Road 7 and horizontal air flue 6 enter combustion chamber, in addition the exhaust gas after burning is entered by corresponding horizontal air flue 6 with air flue 7 is converged
One or more independent regenerative chambers；2 height into adjacent sectional combustion room, the sectional combustion room that is located above be located at lower section
The indoor gas flow of sectional combustion with horizontal air flue 6 between the two be symmetrical axial symmetry flow；
3) when coal base upright furnace cooperates with mode of heating using poor gas with rich gas, poor gas heating system adds with rich gas
Hot systems cooperate；Within the same commutation cycle, poor gas heating or rich is respectively adopted in the sectional combustion room of different height
Heated by gas, while entering the type of the indoor gas medium of different height sectional combustion as needed, determination is all rising gas
The independent regenerative chamber of stream is still only to be used as air regenerator as poor gas regenerative chamber and air regenerator；2 height are to adjacent
Sectional combustion room in, the sectional combustion room that is located above and the indoor gas flow of underlying sectional combustion with the two it
Between horizontal air flue be symmetrical axial symmetry flow.
The heating means of a kind of external-heat ultra-large volume coal base upright furnace, within the same commutation cycle, with height
It is identical with row's indoor airflow direction of independence accumulation of heat, that is, be all ascending air or be all down current；Neighbouring independence
The indoor airflow direction of accumulation of heat is then located at lower section on the contrary, when the indoor air-flow of independent accumulation of heat being located above is ascending air
The indoor air-flow of independent accumulation of heat be down current；It is all the only of the different height of ascending air when using rich gas heating
Vertical regenerative chamber can be used as air regenerator air-supplied simultaneously；When using poor gas heating when, be all ascending air same row it is only
Vertical regenerative chamber is as poor gas regenerative chamber and air regenerator, and air regenerator is for feeding combustion air, poor gas regenerative chamber
For feeding poor gas；When cooperateed with rich gas using poor gas heat when, be all the independent regenerative chamber of ascending air according to need
To enter the gas medium type in different height independent burning room, determine that the independent regenerative chamber of different height is as poor gas
Regenerative chamber and air regenerator are still only used as air regenerator.
Following embodiment is being implemented down based on the technical solution of the present invention, gives detailed embodiment and tool
The operating process of body, but protection scope of the present invention is not limited to following embodiments.Method therefor is such as without spy in following embodiments
It is conventional method not mentionlet alone bright.
【Embodiment】
In the present embodiment, the coal base upright furnace of external-heat ultra-large volume is by combustion chamber 1, reduction room 2, regenerative chamber 3 and furnace roof
5 compositions, the setting alternate with reduction room 2 of combustion chamber 1, and positioned at the side of furnace body；Regenerative chamber 3 is located at the other side of furnace body, burning
The top of room 1 and reduction room 2 is furnace roof 5.
In the present embodiment, the combustion chamber 1 is along height to being divided into top combustion chamber 1-2 and lower combustion chamber 1-1, regenerative chamber 3
Along high to being divided into top regenerative chamber 3-3, middle part regenerative chamber 3-2 and lower part regenerative chamber 3-1；Pass through at the top of the 1-2 of top combustion chamber
Corresponding horizontal air flue 6 is connected to the top of top regenerative chamber 3-3, the bottom of top combustion chamber 1-2 and lower combustion with air flue 7 is converged
The top of room 1-1 passes through the horizontal air flue of correspondence 6 and the top for converging air flue 7 and being connected to middle part regenerative chamber 3-2, lower combustion chamber 1-1
Top pass through the horizontal air flue of correspondence 6 and converge the top that air flue 7 connects lower part regenerative chamber 3-1；Top regenerative chamber 3-3, middle part
Set checker brick 11 in regenerative chamber 3-2 and lower part regenerative chamber 3-1 respectively, the bottom of top regenerative chamber 3-3, middle part regenerative chamber 3-2
Bottom connects corresponding waste gas valve by corresponding bottom flue 4-3,4-2,4-1 respectively with the bottom of lower part regenerative chamber 3-1,
The top of bottom flue 4 sets double-edged fine-toothed comb brick 12；The bottom of lower combustion chamber 1-1 sets the brick gas passage 9 sprayed under rich gas, top combustion chamber
The horizontally-arranged brick gas passage 8-3 in top that rich gas side enters is set at the top of 1-2, the bottom of top combustion chamber 1-2 sets what rich gas side entered
The horizontally-arranged brick gas passage 8-1 in lower part that rich gas side enters is set at the top of the horizontally-arranged brick gas passage 8-2 in middle part, lower combustion chamber 1-1.In figure
13 be bottom of combustion chamber air/poor gas introducing port or exhaust gas export mouth, 14 for top of combustion chamber exhaust gas export mouth or air/
Poor gas introducing port.
When coal base upright furnace individually uses poor gas mode of heating, completed by poor gas heating system；As shown in fig. 4 a,
When this is exchanged, poor gas/air that coal base upright furnace is entered from top regenerative chamber 3-3, lower part regenerative chamber 3-1 converges along corresponding
After aikido 7, horizontal air flue 6 respectively enter top combustion chamber 1-2, lower combustion chamber 1-1 burning, exhaust gas is from top combustion chamber 1-
Enter same level air flue 6 at the top of 2 bottoms and lower combustion chamber 1-1, then enter in the regenerative chamber 3-2 of middle part through converging air flue 7, so
Coal base upright furnace is flowed out by middle part regenerative chamber bottom flue 4-2 and corresponding waste gas valve afterwards；Gas in the 1-2 of top combustion chamber
Stream flows from up to down, the bottom-up flowing of the air-flow in lower combustion chamber 1-1.
As shown in Figure 4 b, when exchanging next time, from middle part, regenerative chamber 3-2 enters poor gas/air edge of coal base upright furnace
Correspondence converges air flue 7, horizontal air flue 6 respectively enters top combustion chamber 1-2, after lower combustion chamber 1-1 burnings, and exhaust gas is fired from top
Burn at the top of the 1-2 of room through corresponding horizontal air flue 6, converge air flue 7 after enter top regenerative chamber 3-3, while exhaust gas is from lower combustion
The room bottoms 1-1 through corresponding horizontal air flue 6, converge air flue 7 after enter lower part regenerative chamber 3-1, with checker brick 11 exchange heat after, point
It is upright that coal base is not flowed out by top regenerative chamber bottom flue 4-3, lower part regenerative chamber bottom flue 4-1 and corresponding waste gas valve
Stove；The bottom-up flowing of air-flow in the 1-2 of top combustion chamber, the air-flow in lower combustion chamber 1-1 flow from up to down.
When coal base upright furnace individually uses rich gas heating means, completed by rich gas heating system；As shown in Figure 5 a,
When this is exchanged, rich gas is entered by the horizontally-arranged brick gas passage 8-3 in top that the rich gas side at the top of the 1-2 of top combustion chamber enters
Top combustion chamber 1-2, while the brick gas passage 9 by being sprayed under the rich gas of the bottoms lower combustion chamber 1-1 enters lower combustion chamber
1-1；Combustion air converges air flue 7, the difference of horizontal air flue 6 by top regenerative chamber 3-3, lower part regenerative chamber 3-1 and through corresponding
After-combustion is blended into top combustion chamber 1-2, lower combustion chamber 1-1 and rich gas, the exhaust gas after burning is through top combustion chamber 1-2
Same level air flue 6 between lower combustion chamber 1-1 converges air flue 7 and enters middle part regenerative chamber 3-2, exchanges heat with checker brick 11
Coal base upright furnace is flowed out by middle part regenerative chamber bottom flue 4-2 and corresponding waste gas valve.As shown in Figure 5 b, it is handed in next time
When changing, rich gas enters top by the horizontally-arranged brick gas passage 8-2 in middle part that the rich gas side of the top combustion chamber bottoms 1-2 enters and burns
Room 1-2, while lower combustion is entered by the horizontally-arranged brick gas passage 8-1 in lower part that the rich gas side at the top of lower combustion chamber 1-1 enters
Room 1-1；Combustion air converges air flue 7 and horizontal air flue 6 respectively enters top burning by middle part regenerative chamber 3-2 and through corresponding
Room 1-2 and lower combustion chamber 1-1 blends after-combustion with rich gas, and the exhaust gas after burning is through at the top of the 1-2 of top combustion chamber and lower part
The horizontal air flue 6 of the combustion chamber bottoms 1-1, the corresponding air flue 7 that converges respectively enter top regenerative chamber 3-3 and lower part regenerative chamber 3-1,
After exchanging heat with checker brick 11, it is opened and closed through top regenerative chamber bottom flue 4-3, lower part regenerative chamber bottom flue 4-1 and through corresponding exhaust gas
Device flows out coal base upright furnace.
When coal base upright furnace cooperates with mode of heating using poor gas with rich gas, poor gas heating system is heated with rich gas
System synergistic working；As shown in Figure 6 a, when this is exchanged, top combustion chamber 1-2 and lower combustion chamber 1-1 are all made of poor gas
Heating；Its principle with individually use poor gas heating system when it is identical；As shown in Figure 6 b, when exchanging next time, top combustion chamber
1-2 and lower combustion chamber 1-1 are all made of rich gas heating, principle with individually using rich gas heating system when it is identical；Such as figure
Shown in 6c, in this exchange, top combustion chamber 1-2 uses poor gas mode of heating, lower combustion chamber 1-1 to use rich gas
Mode of heating；At this point, poor gas enters top combustion through top regenerative chamber 3-3, corresponding air flue 7 and the horizontal air flue 6 of converging from top
Room 1-2 is burnt, the brick gas passage 9 that rich gas is sprayed under rich gas enters lower combustion chamber 1-1, and combustion air is through lower part regenerative chamber 3-
1, correspondence converges air flue 7 and horizontal air flue 6 enters lower combustion chamber 1-1 from bottom；Top combustion chamber 1-2 and lower combustion chamber 1-
Exhaust gas after 1 burning by between top combustion chamber 1-2 and lower combustion chamber 1-1 horizontal air flue 6, corresponding converge air flue
7 enter middle part regenerative chamber 3-2, then flow out coal base upright furnace through middle part regenerative chamber bottom flue 4-2 and corresponding waste gas valve.Such as
Shown in Fig. 6 d, when exchanging next time, top combustion chamber 1-2 and lower combustion chamber 1-1 are all made of poor gas mode of heating, principle
With individually use poor gas heating system when it is identical.
When using any one of the above heating means, the horizontally-arranged brick gas passage 8 in rich gas system and lower spray brick coal gas
Road 9 can it is whole/partly with compressed air supervisor be connected to, as each section of combustor section burn air secondary for access point.
The foregoing is only a preferred embodiment of the present invention, but scope of protection of the present invention is not limited thereto,
Any one skilled in the art in the technical scope disclosed by the present invention, according to the technique and scheme of the present invention and its
Inventive concept is subject to equivalent substitution or change, should be covered by the protection scope of the present invention.
Claims (7)
1. a kind of heating system of external-heat ultra-large volume coal base upright furnace, which is characterized in that including poor gas heating system and
Rich gas heating system；The poor gas heating system includes regenerative chamber, combustion chamber, horizontal air flue and converges air flue, the richness
Gas heating system includes regenerative chamber, combustion chamber, horizontal air flue, converges the brick gas passage and rich gas sprayed under air flue, rich gas
The horizontally-arranged brick gas passage that side enters, wherein the regenerative chamber, combustion chamber, horizontal air flue and converge air flue be both share；The combustion
It burns room and, at least three independence regenerative chamber is divided into, is respectively segmented combustion along high at least two sectional combustion room, regenerative chamber is divided into along height
It burns room and corresponding independent regenerative chamber is connected with air flue is converged by the horizontal air flue of correspondence respectively；The brick gas passage sprayed under rich gas is set
It is segmented the bottom of combustion chamber in lowest part, lowest part is segmented the top of combustion chamber and the top and bottom point of remaining sectional combustion room
The horizontally-arranged brick gas passage that rich gas side enters is not set；Poor gas heating system is individually or simultaneously used with rich gas heating system, respectively
Independent regenerative chamber is used according to the different of mode of heating respectively as air regenerator or air regenerator and poor gas regenerative chamber.
2. a kind of heating system of external-heat ultra-large volume coal base upright furnace according to claim 1, which is characterized in that institute
Combustion chamber is stated along height to being divided into 2 sectional combustion rooms, i.e. top combustion chamber and lower combustion chamber, regenerative chamber is along high to being divided into 3
Independent regenerative chamber, i.e. top regenerative chamber, middle part regenerative chamber and lower part regenerative chamber；The top of top combustion chamber passes through corresponding horizontal gas
Road is connected to the top of top regenerative chamber, the bottom of top combustion chamber and the top of lower combustion chamber with air flue is converged and passes through corresponding water
Flat air flue is connected to the top of middle part regenerative chamber with air flue is converged, and gas by the horizontal air flue of correspondence and is converged in the top of lower combustion chamber
Road connects the top of lower part regenerative chamber；Checker brick, and top are set respectively in top regenerative chamber, middle part regenerative chamber and lower part regenerative chamber
The bottom of regenerative chamber, the bottom of middle part regenerative chamber and the bottom of lower part regenerative chamber are connected by corresponding bottom flue corresponding useless respectively
Gas shutter；The bottom of lower combustion chamber sets the brick gas passage sprayed under rich gas, and rich gas side is set at the top of the combustion chamber of top and is entered
The horizontally-arranged brick gas passage in top, the bottom of top combustion chamber sets the horizontally-arranged brick gas passage in middle part that rich gas side enters, lower combustion chamber
Top set the horizontally-arranged brick gas passage in lower part that rich gas side enters.
3. a kind of heating system of external-heat ultra-large volume coal base upright furnace according to claim 1, which is characterized in that institute
Air regenerator and poor gas regenerative chamber are stated in sustained height, and spaced.
4. a kind of heating system of external-heat ultra-large volume coal base upright furnace according to claim 1, which is characterized in that institute
It states the brick gas passage sprayed under rich gas and connects richness when using rich gas mode of heating with the horizontally-arranged brick gas passage that rich gas side enters
Coal gas main pipeline connects compressed air main pipeline, the secondary sky as each sectional combustion room when using poor gas mode of heating
Gas is for access point；The access point of rich gas main pipeline is located on the outside of the protection wall of combustion chamber.
5. a kind of heating means of external-heat ultra-large volume coal base upright furnace based on heating system described in claim 1, special
Sign is, poor gas heating, rich gas heating or poor gas can be used and cooperate with three kinds of mode of heatings of heating with rich gas, three kinds add
Hot mode is all made of the mode of sectional combustion, segmentation gas supply, and heating gas medium is poor gas, rich gas or poor gas and rich coal
Gas.
6. a kind of heating means of external-heat ultra-large volume coal base upright furnace based on heating system described in claim 1, special
Sign is, including：
1) it when coal base upright furnace individually uses poor gas mode of heating, is completed by poor gas heating system；In same commutation week
In phase, poor gas/air that coal base upright furnace is entered through wherein one or more independent regenerative chambers converges air flue, water along corresponding
Flat air flue respectively enter the exhaust gas after corresponding sectional combustion room, burning again along corresponding horizontal air flue and converge air flue enter it is another
The outer independent regenerative chamber of one or more, then flows out coal base upright furnace by corresponding bottom flue and waste gas valve；2 height
Into adjacent sectional combustion room, the sectional combustion room that is located above and the indoor gas flow of underlying sectional combustion with
Horizontal air flue between the two is symmetrical axial symmetry flow；
2) it when coal base upright furnace individually uses rich gas mode of heating, is completed by rich gas heating system；In same commutation week
In phase, according to the needs of burning, horizontally-arranged brick coal that brick gas passage and/or rich gas side that rich gas sprays under rich gas respectively enter
Air flue enters combustion chamber, for combustion-supporting air through wherein one or more independent regenerative chambers, corresponding converge air flue and level
Air flue enters combustion chamber, and the exhaust gas after burning enters other one or more solely by corresponding horizontal air flue with air flue is converged
Vertical regenerative chamber；2 height are into adjacent sectional combustion room, the sectional combustion room and the underlying sectional combustion room that are located above
Interior gas flow is with horizontal air flue between the two for symmetrical axial symmetry flow；
3) when coal base upright furnace cooperates with mode of heating using poor gas with rich gas, poor gas heating system is with rich gas heating
System cooperates；Within the same commutation cycle, poor gas heating or rich gas are respectively adopted in the sectional combustion room of different height
Heating, while entering the type of the indoor gas medium of different height sectional combustion as needed, determination is all ascending air
Independent regenerative chamber is still only to be used as air regenerator as poor gas regenerative chamber and air regenerator；2 height divide to adjacent
In section combustion chamber, the sectional combustion room that is located above and the indoor gas flow of underlying sectional combustion are between the two
Horizontal air flue is symmetrical axial symmetry flow.
7. a kind of heating means of external-heat ultra-large volume coal base upright furnace according to claim 5, which is characterized in that
It is level identical with the independent indoor airflow direction of accumulation of heat is arranged in the same commutation cycle, that is, under being all ascending air or being all
Sending down abnormally ascending stream；The neighbouring indoor airflow direction of independent accumulation of heat is on the contrary, the indoor air-flow of independent accumulation of heat being located above is
When ascending air, then the underlying indoor air-flow of independent accumulation of heat is down current；When using rich gas heating when, be all on
Rising the independent regenerative chamber of the different height of air-flow can be used as air regenerator air-supplied simultaneously；When using poor gas heating,
Be all ascending air same row's independence regenerative chamber as poor gas regenerative chamber and air regenerator, air regenerator is helped for feeding
Air is fired, poor gas regenerative chamber is for feeding poor gas；It is all ascending air when cooperateing with heating with rich gas using poor gas
Independent regenerative chamber as needed enter different height independent burning room in gas medium type, determine the independence of different height
Regenerative chamber is as poor gas regenerative chamber and air regenerator or only as air regenerator.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810332321.XA CN108707716B (en) | 2018-04-13 | 2018-04-13 | Heating system and heating method of externally-heated oversized-volume coal-based vertical furnace |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810332321.XA CN108707716B (en) | 2018-04-13 | 2018-04-13 | Heating system and heating method of externally-heated oversized-volume coal-based vertical furnace |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108707716A true CN108707716A (en) | 2018-10-26 |
| CN108707716B CN108707716B (en) | 2023-06-16 |
Family
ID=63867336
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810332321.XA Active CN108707716B (en) | 2018-04-13 | 2018-04-13 | Heating system and heating method of externally-heated oversized-volume coal-based vertical furnace |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108707716B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110846456A (en) * | 2019-11-22 | 2020-02-28 | 刘建华 | Iron oxide reduction device and process |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH11323344A (en) * | 1998-05-08 | 1999-11-26 | Sumitomo Metal Ind Ltd | Process for reducing nox in coke oven combustion exhaust |
| CN102925164A (en) * | 2012-11-13 | 2013-02-13 | 中冶焦耐工程技术有限公司 | Coke oven heating method |
| CN105349156A (en) * | 2015-12-02 | 2016-02-24 | 中冶焦耐工程技术有限公司 | Vertical furnace with sectional heating combustion chamber and heating method of vertical furnace |
| CN105385461A (en) * | 2015-12-02 | 2016-03-09 | 中冶焦耐工程技术有限公司 | Sectionalized air feeding structure and method for coke oven heating |
| CN107057721A (en) * | 2017-06-20 | 2017-08-18 | 中冶焦耐(大连)工程技术有限公司 | The method for realizing low nitrogen burning in coke oven combustion chamber flue |
| CN107815516A (en) * | 2017-12-15 | 2018-03-20 | 中冶焦耐(大连)工程技术有限公司 | A kind of external-heat coal base upright furnace for being used to produce DRI |
| CN208151410U (en) * | 2018-04-13 | 2018-11-27 | 中冶焦耐(大连)工程技术有限公司 | A kind of heating system of external-heat ultra-large volume coal base upright furnace |
-
2018
- 2018-04-13 CN CN201810332321.XA patent/CN108707716B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH11323344A (en) * | 1998-05-08 | 1999-11-26 | Sumitomo Metal Ind Ltd | Process for reducing nox in coke oven combustion exhaust |
| CN102925164A (en) * | 2012-11-13 | 2013-02-13 | 中冶焦耐工程技术有限公司 | Coke oven heating method |
| CN105349156A (en) * | 2015-12-02 | 2016-02-24 | 中冶焦耐工程技术有限公司 | Vertical furnace with sectional heating combustion chamber and heating method of vertical furnace |
| CN105385461A (en) * | 2015-12-02 | 2016-03-09 | 中冶焦耐工程技术有限公司 | Sectionalized air feeding structure and method for coke oven heating |
| CN107057721A (en) * | 2017-06-20 | 2017-08-18 | 中冶焦耐(大连)工程技术有限公司 | The method for realizing low nitrogen burning in coke oven combustion chamber flue |
| CN107815516A (en) * | 2017-12-15 | 2018-03-20 | 中冶焦耐(大连)工程技术有限公司 | A kind of external-heat coal base upright furnace for being used to produce DRI |
| CN208151410U (en) * | 2018-04-13 | 2018-11-27 | 中冶焦耐(大连)工程技术有限公司 | A kind of heating system of external-heat ultra-large volume coal base upright furnace |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110846456A (en) * | 2019-11-22 | 2020-02-28 | 刘建华 | Iron oxide reduction device and process |
Also Published As
| Publication number | Publication date |
|---|---|
| CN108707716B (en) | 2023-06-16 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN106892578B (en) | A kind of full recycling CO2Lime kiln device | |
| CN201083461Y (en) | Heat accumulation type bar plate heating stove | |
| CN101585524B (en) | Fugitive constituent and preheated air passage structure of tank type carbon calciner | |
| CN202754941U (en) | Stamp-charging coke oven with partition-adjustable regenerative chambers | |
| CN101839638B (en) | Heat accumulating and preheating combined heating method of slag-drip high-temperature silicon steel plate blank heating furnace | |
| CN202465585U (en) | Tamping coke oven with combustors heated sectionally and regenerative chambers adjusted separately | |
| CN202660889U (en) | Liquid deslagging high-temperature oriented silicon steel walking beam type slab heating furnace | |
| CN105349156A (en) | Vertical furnace with sectional heating combustion chamber and heating method of vertical furnace | |
| CN201313819Y (en) | Volatile matter and preheated air channel structure of calciner | |
| CN107190116A (en) | A kind of regenerative combustion type coal base shaft furnace and a kind of direct-reduction production method | |
| CN106440811A (en) | Igniting device and ignition method for sintering | |
| CN205347481U (en) | Coal -based direct reduction stove | |
| CN208151410U (en) | A kind of heating system of external-heat ultra-large volume coal base upright furnace | |
| CN101705375B (en) | Reduction furnace for smelting metal magnesium | |
| CN108707716A (en) | A kind of heating system and heating means of external-heat ultra-large volume coal base upright furnace | |
| CN107815516A (en) | A kind of external-heat coal base upright furnace for being used to produce DRI | |
| CN201417073Y (en) | Natural gas hot air furnace gas purification cupola furnace | |
| CN108467913A (en) | A kind of ultra-large volume coal base upright furnace producing direct reduced iron | |
| CN202432680U (en) | Reverse gas fire pipe environment-friendly air heating furnace | |
| CN208151409U (en) | A kind of ultra-large volume coal base upright furnace producing direct reduced iron | |
| CN2254085Y (en) | Tank type furnace for producing sponge iron by direct reduction | |
| CN101713032A (en) | Method for preparing magnesium metal by multi-layer energy-saving reducing furnace | |
| CN207738789U (en) | A kind of external-heat coal base upright furnace for producing direct reduced iron | |
| CN202175625U (en) | Novel energy-saving lime kiln | |
| CN206094076U (en) | Regenerative burner structure |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |