CN208151409U - A kind of ultra-large volume coal base upright furnace producing direct reduced iron - Google Patents
A kind of ultra-large volume coal base upright furnace producing direct reduced iron Download PDFInfo
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- CN208151409U CN208151409U CN201820529831.1U CN201820529831U CN208151409U CN 208151409 U CN208151409 U CN 208151409U CN 201820529831 U CN201820529831 U CN 201820529831U CN 208151409 U CN208151409 U CN 208151409U
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Abstract
The utility model relates to a kind of ultra-large volume coal base upright furnaces for producing direct reduced iron, including combustion chamber, reduction room, regenerative chamber, cooling chamber and furnace roof, combustion chamber and reduction room are along height to being divided into multistage, regenerative chamber is along high multiple to being divided into, horizontal air flue is separately connected at the top and bottom of every section of combustion chamber, horizontal air flue connects the top of corresponding single regenerative chamber by converging air flue, and the bottom of regenerative chamber passes through corresponding bottom flue and connects waste gas valve；The bottom of the sectional combustion room of bottom is set outside the brick gas passage sprayed under rich gas, and the top and bottom of the top of the sectional combustion room and remaining sectional combustion room sets the horizontally-arranged brick gas passage that rich gas side enters respectively.The furnace structure of the utility model is reasonable, and heat transfer condition is good, and converter life is long；The demand that can adapt to enlargement dramatically increases upright furnace reduction room volume, to significantly improve the yield of direct reduced iron；It can be conveniently adjusted gas flow simultaneously, combustion process controllability is good, is more advantageous to energy conservation and environmental protection.
Description
Technical field
The utility model relates to metallurgical technology field more particularly to a kind of ultra-large volume coal base for producing direct reduced iron are straight
Vertical furnace.
Background technique
Direct reduction iron making technique (DRI) refers under the fusion temperature lower 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 gas base directly reducing and two kinds of coal-based direct reduction by technique, and main equipment is divided into back
Rotary kiln, rotary hearth furnace, reactor tank, tube furnace and fluidized bed etc..Currently, 90% or more direct reduced iron is all with gas base in the world
What reduction method was produced, but China's natural gas resource is limited and price is higher, gas-based reduction technique is not suitable for the more coals in China
The national conditions of few gas；And traditional coal-based rotary kiln technique, rotary hearth furnace process, tunnel oven technique all exist that energy consumption is high, production process
Not easy to control, the problems such as product quality grade is low.
External heated shaft furnace direct-reduction process (KM method) 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
Furnace》, Publication No. CN201166513 patent《Coal base direct-reduced》, Publication No. CN204529897U
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, is unable to satisfy the demand of enlargement.
Summary of the invention
The utility model provides a kind of ultra-large volume coal base upright furnace for producing direct reduced iron, and furnace structure is closed
Reason, heat transfer condition is good, and converter life is long；It can adapt to the demand of enlargement, upright furnace reduction room volume rises to existing appearance
Long-pending 2 times or more, to significantly improve the yield of direct reduced iron；It can be conveniently adjusted gas flow, combustion process simultaneously
Controllability is good, is more advantageous to energy conservation and environmental protection.
In order to achieve the above object, the utility model is implemented with the following technical solutions：
A kind of ultra-large volume coal base upright furnace producing direct reduced iron, including combustion chamber, reduction room, regenerative chamber, cooling
Room and furnace roof, the combustion chamber and reduction room are located at furnace body side, and combustion chamber distributes alternately with reduction room, and regenerative chamber is located at furnace
The body other side, regenerative chamber is interior to be equipped with checker brick；Furnace roof is located at combustion chamber and restores the top of room, and cooling chamber is set under reduction room
Side；The combustion chamber is divided into multistage to multistage, reduction room correspondence is divided into along height；Regenerative chamber is along high multiple to being divided into, every section of burning
Corresponding horizontal air flue is separately connected at the top and bottom of room, horizontal air flue connects corresponding single regenerative chamber by converging air flue
Top, the bottom of regenerative chamber passes through corresponding bottom flue and connects waste gas valve；The bottom of the sectional combustion room of bottom sets richness
Outside the brick gas passage sprayed under coal gas, the top and bottom of the top of the sectional combustion room and remaining sectional combustion room sets rich coal respectively
The horizontally-arranged brick gas passage that gas side enters.
The combustion chamber is along height to being divided into top combustion chamber and lower combustion chamber, and regenerative chamber is along high to being divided into top accumulation of heat
Room, middle part regenerative chamber and lower part regenerative chamber；The top of top combustion chamber connects top with air flue is converged by corresponding horizontal air flue
Regenerative chamber, the bottom of top combustion chamber and the top of lower combustion chamber connect middle part storage with air flue is converged by corresponding horizontal air flue
The bottom in hot cell, lower combustion chamber connects lower part regenerative chamber with air flue is converged by corresponding horizontal air flue；The top of top combustion chamber
Portion sets the horizontally-arranged brick gas passage in top that rich gas side enters, and 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 bottom of lower combustion chamber is set under rich gas
The brick gas passage of spray；Reduction room is correspondingly divided into top reduction room with top combustion chamber and lower combustion chamber and lower part restores
Room.
The reduction room is that single reduction room, double reduction room or three rows restore room.
Undergauge structure is equipped between the top reduction room and lower part reduction room, top reduction room and lower part reduction room are
The pyramidal structure of narrow, lower mouth width suitable for reading.
Compared with prior art, the utility model has the beneficial effects that：
1) furnace structure is reasonable, and heat transfer condition is good, and converter life is long；
2) it is improved by structure, dramatically increases the reduction room volume of upright furnace, direct reduced iron can be significantly improved
Yield；
3) easy to operate, gas flow is adjustable, easily controllable ignition temperature and speed, high temperature dot is reduced, to reduce NOx
Generation, it is more conducively environmentally friendly.
Detailed description of the invention
Fig. 1 is a kind of main view section of ultra-large volume coal base upright furnace for producing direct reduced iron described in the utility model
Figure.
Fig. 2 is the A-A view in Fig. 1.
Fig. 3 is the B-B view in Fig. 2.
In figure：1. the combustion chamber top lower combustion chamber 1-2. 1-1. combustion chamber 2. restores the lower part room 2-1. and restores room
The top 2-2. restores regenerative chamber 4. bottom flue in the top regenerative chamber 3-3. in the middle part of 3. lower part regenerative chamber 3-1. regenerative chamber 3-2. of room
The top regenerative chamber bottom flue 4-3. regenerative chamber bottom flue 5, furnace roof 6. are horizontal in the middle part of the regenerative chamber bottom flue 4-2. of the lower part 4-1.
Air flue 7. converges the horizontally-arranged brick coal in middle part that the horizontally-arranged brick gas passage 8-2. rich gas side in lower part that air flue 8-1. rich gas side enters enters
10. cooling chamber of brick gas passage, 11. lattice sprayed under horizontally-arranged 9. rich gas of brick gas passage in the top that air flue 8-3. rich gas side enters
Sub- brick
Specific embodiment
Specific embodiment of the present utility model is described further with reference to the accompanying drawing：
As shown in Figure 1, a kind of ultra-large volume coal base upright furnace for producing direct reduced iron described in the utility model, including combustion
Room 1, reduction room 2, regenerative chamber 3, cooling chamber 10 and furnace roof 5 are burnt, the combustion chamber 1 is located at furnace body side with reduction room 2, and burns
Room 1 distributes alternately with reduction room 2, and regenerative chamber 3 is located at the furnace body other side, is equipped with checker brick 11 in regenerative chamber 3；Furnace roof is located at burning
The top of room 1 and reduction room 2, cooling chamber 10 are set to the lower section of reduction room 2；The combustion chamber 1, to multistage is divided into, restores room along height
2 correspondences are divided into multistage；Regenerative chamber 3 is multiple to being divided into along height, and the top and bottom of every section of combustion chamber 1 are separately connected corresponding level
Air flue 6, horizontal air flue 6 connect the top of corresponding single regenerative chamber 3 by converging air flue 7, and the bottom of regenerative chamber 3 passes through correspondence
Bottom flue 4 connects waste gas valve；The bottom of the sectional combustion room of bottom is set outside the brick gas passage 9 sprayed under rich gas, this point
The top of section combustion chamber and the top and bottom of remaining sectional combustion room set the horizontally-arranged brick gas passage that rich gas side enters respectively.
The combustion chamber 1 is along height to top combustion chamber 1-2 and lower combustion chamber 1-1 is divided into, and regenerative chamber 3 is along height on being divided into
Portion regenerative chamber 3-3, middle part regenerative chamber 3-2 and lower part regenerative chamber 3-1；The top of top combustion chamber 1-2 passes through corresponding horizontal air flue 6
Top regenerative chamber 3-3 is connected with air flue 7 is converged, passes through correspondence at the top of the bottom of top combustion chamber 1-2 and lower combustion chamber 1-1
Horizontal air flue 6 and the bottom for converging the connection of air flue 7 middle part regenerative chamber 3-2, lower combustion chamber 1-1 pass through corresponding horizontal 6 He of air flue
Converge air flue 7 and connects lower part regenerative chamber 3-1；The horizontally-arranged brick gas passage in top that rich gas side enters is set at the top of the 1-2 of top combustion chamber
8-3, the bottom of top combustion chamber 1-2 set the horizontally-arranged brick gas passage 8-2 in middle part that rich gas side enters, the top of lower combustion chamber 1-1
If the horizontally-arranged brick gas passage 8-1 in the lower part that rich gas side enters；The bottom of lower combustion chamber 1-1 sets the brick gas passage 9 sprayed under rich gas；
Reduction room 2 is correspondingly divided into top reduction room 2-2 and lower part reduction room 2- with top combustion chamber 1-2 and lower combustion chamber 1-1
1。
The reduction room 2 is that single reduction room, double reduction room or three rows restore room.
It is equipped with undergauge structure between the top reduction room 2-2 and lower part reduction room 2-1, top restores room 2-2 and lower part
Reduction room 2-1 is the pyramidal structure of narrow, lower mouth width suitable for reading.
In the utility model, the combustion chamber being respectively segmented is used as independent combustion chamber, into the gas stream of every section of combustion chamber
Amount can independent control；Multiple regenerative chambers both can be all as air regenerator in coke oven air inlet, can also be respectively as
Poor gas regenerative chamber and air regenerator.
The bottom of top regenerative chamber 3-3 passes through the corresponding waste gas valve of top regenerative chamber bottom flue 4-3 connection；Middle part stores
Hot cell 3-2 passes through the corresponding waste gas valve of middle part regenerative chamber bottom flue 4-2 connection；Lower part regenerative chamber 3-1 passes through lower part accumulation of heat
The corresponding waste gas valve of room bottom flue 4-1 connection；Each waste gas valve can be adjusted individually.
A kind of external-heat ultra-large volume coal base upright furnace producing direct reduced iron described in the utility model, will be reduced directly
The oxidation reaction of fuel combustion in ironmaking processes, the gasification reaction of raw material, the reduction reaction of raw material, generation sponge iron it is cold
But the process of process and recycling high-temperature flue gas UTILIZATION OF VESIDUAL HEAT IN concentrates in upright furnace, reduction room height reasonable with furnace structure
Degree can according to production capacity increase in demand, converter life is long, hot working efficiency is high, auxiliary device investment is low, is easily achieved the spies such as engineering
Point.
The preferable specific embodiment of the above, only the utility model, but the protection scope of the utility model is not
It is confined to this, anyone skilled in the art is within the technical scope disclosed by the utility model, practical according to this
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 (4)
1. a kind of ultra-large volume coal base upright furnace for producing direct reduced iron, including combustion chamber, reduction room, regenerative chamber, cooling chamber
And furnace roof, the combustion chamber and reduction room are located at furnace body side, and combustion chamber distributes alternately with reduction room, and regenerative chamber is located at furnace body
The other side, regenerative chamber is interior to be equipped with checker brick；Furnace roof is located at combustion chamber and restores the top of room, and cooling chamber is set under reduction room
Side；It is characterized in that, the combustion chamber is divided into multistage to multistage, reduction room correspondence is divided into along height；Regenerative chamber is along high more to being divided into
It is a, corresponding horizontal air flue is separately connected at the top and bottom of every section of combustion chamber, horizontal air flue is corresponded to by converging air flue connection
Single regenerative chamber top, the bottom of regenerative chamber passes through corresponding bottom flue and connects waste gas valve；The sectional combustion of bottom
The bottom of room is set outside the brick gas passage sprayed under rich gas, the top and bottom of the top of the sectional combustion room and remaining sectional combustion room
Portion sets the horizontally-arranged brick gas passage that rich gas side enters respectively.
2. a kind of ultra-large volume coal base upright furnace for producing direct reduced iron according to claim 1, which is characterized in that institute
Combustion chamber is stated along height to being divided into top combustion chamber and lower combustion chamber, regenerative chamber is along high to being divided into top regenerative chamber, middle part accumulation of heat
Room and lower part regenerative chamber；The top of top combustion chamber connects top regenerative chamber, top with air flue is converged by corresponding horizontal air flue
The bottom of combustion chamber and the top of lower combustion chamber connect middle part regenerative chamber, lower part combustion with air flue is converged by corresponding horizontal air flue
The bottom for burning room connects lower part regenerative chamber with air flue is converged by corresponding horizontal air flue；Rich gas side is set at the top of the combustion chamber of top
The horizontally-arranged brick gas passage in the top entered, the bottom of top combustion chamber set the horizontally-arranged brick gas passage in middle part that rich gas side enters, lower combustion
The horizontally-arranged brick gas passage in lower part that rich gas side enters is set at the top of room；The bottom of lower combustion chamber sets the brick coal gas sprayed under rich gas
Road；Reduction room is correspondingly divided into top reduction room and lower part reduction room with top combustion chamber and lower combustion chamber.
3. a kind of ultra-large volume coal base upright furnace for producing direct reduced iron according to claim 1, which is characterized in that institute
Stating reduction room is that single reduction room, double reduction room or three rows restore room.
4. a kind of ultra-large volume coal base upright furnace for producing direct reduced iron according to claim 2, which is characterized in that institute
State top reduction room and lower part reduction room between be equipped with undergauge structure, top reduction room and lower part reduction room be it is suitable for reading it is narrow, under
The pyramidal structure of mouth width.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820529831.1U CN208151409U (en) | 2018-04-13 | 2018-04-13 | A kind of ultra-large volume coal base upright furnace producing direct reduced iron |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820529831.1U CN208151409U (en) | 2018-04-13 | 2018-04-13 | A kind of ultra-large volume coal base upright furnace producing direct reduced iron |
Publications (1)
| Publication Number | Publication Date |
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| CN208151409U true CN208151409U (en) | 2018-11-27 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108467913A (en) * | 2018-04-13 | 2018-08-31 | 中冶焦耐(大连)工程技术有限公司 | A kind of ultra-large volume coal base upright furnace producing direct reduced iron |
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2018
- 2018-04-13 CN CN201820529831.1U patent/CN208151409U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108467913A (en) * | 2018-04-13 | 2018-08-31 | 中冶焦耐(大连)工程技术有限公司 | A kind of ultra-large volume coal base upright furnace producing direct reduced iron |
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