CN101813412B - Method and device for distributing anti-adhesion material for shaft furnace - Google Patents
Method and device for distributing anti-adhesion material for shaft furnace Download PDFInfo
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- CN101813412B CN101813412B CN2010101604848A CN201010160484A CN101813412B CN 101813412 B CN101813412 B CN 101813412B CN 2010101604848 A CN2010101604848 A CN 2010101604848A CN 201010160484 A CN201010160484 A CN 201010160484A CN 101813412 B CN101813412 B CN 101813412B
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- reaction vessel
- reduction reaction
- shaft furnace
- adhesion material
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Abstract
The present invention discloses a method and a device for an anti-adhesion material used for a shaft furnace, which are capable of preventing the material from being adhered to the inner wall of a reaction vessel. The method is realized by the steps of adding the anti-adhesion material into the reaction vessel from the periphery of a feeding hole along the inner wall of the reaction vessel while adding the material into the reaction vessel from the feeding hole of the reaction vessel. For implementing the method, the device comprises a material channel communicated with the feeding hole of the reaction vessel; and a feeding channel of the anti-adhesion material is arranged on the periphery of the material channel when the material is added into the reaction vessel through the material channel, the anti-adhesion material is added into the reaction vessel along the inner wall of the reaction vessel. By paving the anti-adhesion material on the inner wall of the reaction vessel while adding a material for reaction into the reaction vessel, the reacted material cannot be in contact with the inner wall of the reaction vessel due to being blocked by the anti-adhesion material, thereby preventing the material from being adhered to the inner wall of the reaction vessel.
Description
Technical field
The present invention relates to a kind of method and device that in reaction vessel, carries out cloth.
Background technology
" shaft kiln directly reduced method " is meant in shaft furnace with the direct reduction iron making method of high temperature reduction gas or solid reductant reducing iron ore, is a branch technique in DRI (the being called for short DRI) technology.At present, most shaft kiln directly reduced technology all adopts gas as reducing agent, therefore is called again " gas-based shaft kiln directly reduced technology ".To this, " development of gas-based shaft kiln directly reduced technology " (Hu Junge etc., Anshan iron and steel plant technology, 2008 the 4th phases, the 9th～12 page) literary composition has carried out more detailed introduction.But also therefore the coal of some shaft kiln directly reduced technology employing solid is referred to as " coal-based shaft kiln directly reduced technology " as reducing agent.Its principle is that the iron ore pellets that will dry mixes with materials (as desulfurizing agent) such as going back raw coal in the back feed bin that adds on the furnace roof, enter behind the shaft furnace through more than the heat temperature raising to 800 ℃ by feed bin and to carry out reduction reaction, more reacted product is discharged from the shaft furnace bottom at last.Because the required facility of coal-based shaft kiln directly reduced technology is fairly simple, so floor space is little, cost of investment is lower, and there is abundant colliery resource in China in addition, so have development potentiality preferably.
Chinese patent ZL200720015482.3 discloses a kind of coal-based direct reduction iron external heated shaft furnace; it adopts the vertical reduction reaction chamber of a plurality of independently rectangles is set in body of heater; and the gas burner is set respectively in the both sides of the vertical reduction reaction chamber width direction of each rectangle; and with the technological means that separates by wall brick between gas burner and the vertical reduction reaction chamber of rectangle; make furnace charge heat transfer effect by wall brick under the situation of isolating with the gas burner carry out reduction reaction; thereby guarantee reducing atmosphere, improve the quality of products.Through objectively analyzing, find that there is the shortcoming of following several respects in this shaft furnace: (1) is owing to only be provided with the gas burner in the both sides of the vertical reduction reaction chamber width direction of rectangle, therefore unequal to the caloradiance at its center everywhere from the vertical reduction reaction chamber periphery of rectangle, cause the heating of furnace charge inhomogeneously, reduction effect is produced certain influence; (2) the vertical reduction reaction chamber of rectangle is to build formation from the bottom to top by laying bricks or stones by the wall brick of its width both sides, and the construction time is long; (3) complex structure of gas burner, and the connection between each gas burner is obstructed, causes more jet for gas must be set; (4) do not prevent the bonding measure of the vertical reduction reaction chamber interior walls of furnace charge and rectangle.
Wherein, because this shaft furnace of above pointing out does not prevent furnace charge and the bonding measure of the vertical reduction reaction chamber interior walls of rectangle, therefore objectively can appear at furnace charge and the bonding problem of reduction reaction chamber interior walls in the course of reaction, cause portioned product in stove, to discharge on the one hand, can reduce the heat conduction efficiency of gas burner on the other hand again to reduction reaction chamber.At the bonding problem of above-mentioned furnace charge, also there is not effective solution at present, become the principal element that the coal-based shaft kiln directly reduced technology of influence is applied.
Summary of the invention
Technical problem solved by the invention provides a kind of material and bonding distributing anti-adhesion material method of reaction vessel inwall of preventing.
The technical scheme that solves the problems of the technologies described above is: distributing anti-adhesion material method, characteristics are the charging aperture from reaction vessel adds material to reaction vessel when, add anti-sizing at the inwall of all edges of described charging aperture reaction vessel in reaction vessel.
Another technical problem that the present invention solves provides a kind of for implementing the custom-designed distributing anti-adhesion material device of said method.
The technical scheme that solves the problems of the technologies described above is: the distributing anti-adhesion material device comprises and the material channel of the feeding inlet of reaction vessel that the periphery of described material channel is provided with the admission passage of anti-sizing.
As a kind of preferred structure of distributing anti-adhesion material device, this distributing anti-adhesion material device comprises in the upper port that is arranged on reaction vessel as the cloth tube of material channel, the outer wall of this cloth tube and reaction vessel inwall between constitute the admission passage of preventing sizing.
Further be that the peripheral shape of the peripheral shape of described cloth tube and the upper port of described reaction vessel is suitable.
Further be that the upper end bore of described cloth tube is less than its lower end bore.
Further be, this distributing anti-adhesion material device also comprise with the discharger of the corresponding setting of the upper port of described material channel and with the discharger of the corresponding setting of the upper port of described admission passage.
Further be, with the discharging opening of the discharger of the corresponding setting of the upper port of described admission passage along the peripheral intervals of this admission passage upper port or be provided with continuously.
The invention has the beneficial effects as follows: the present invention is by when reaction vessel adds the material that reacts, the sizing of can setting up defences on the inwall upper berth of reaction vessel, the material that reacts is owing to the obstruct that is subjected to this anti-sizing can't contact with the inwall of reaction vessel, thereby the inwall that prevents material and reaction vessel takes place bonding.This method and device are particularly useful for preventing that the inwall of reduction reaction chamber in material and the direct reduction shaft furnace from taking place bonding, thereby solve an existing important techniques difficult problem in the present shaft kiln directly reduced technology, help applying of shaft kiln directly reduced technology.
Description of drawings
Fig. 1 is the structural representation of external combustion tube type direct reduction shaft furnace of the present invention.
Fig. 2 be among Fig. 1 A-A to cutaway view.
Fig. 3 is the partial enlarged drawing at reduction reaction pipe upper port place among Fig. 1.
Fig. 3 also is the structural representation of a kind of specific embodiment of distribution device provided by the present invention.
Fig. 4 is the structural representation of the another kind of embodiment of distribution device.
Fig. 5 is the structural representation of another embodiment of distribution device.
Be labeled as among the figure: body of heater 1, reduction reaction pipe 2, upper port 201, tube coupling 3, combustion chamber 4, reduction chamber 5, supporting plate 6, discharging opening 7, distribution device 8, cloth tube 801, discharger 802, discharger 803, admission passage 804, upper port 805.
The specific embodiment
The present invention is described further below in conjunction with drawings and Examples.
External combustion tube type direct reduction shaft furnace shown in Fig. 1～2, be provided with the body of heater 1 of reduction chamber 5 and combustion chamber 4 in comprising, be provided with the reduction reaction pipe 2 of at least one both ends open in the described body of heater 1, be reduction chamber 5 in the pipe of described reduction reaction pipe 2, periphery is combustion chamber 4.The upper port 201 of described reduction reaction pipe 2 is used for charging, and lower port is used for discharge.The reduction reaction of material is carried out in the pipe of reduction reaction pipe 2.Because the periphery of reduction reaction pipe 2 is combustion chamber 4, therefore therefore the circumferential each point along reduction reaction pipe 2 all can carry out more even, stable heating to the material in the reduction reaction pipe 2 towards the center radiation heat of reduction reaction pipe 2.
The cross section of reduction reaction pipe 2 can be oval ring or even side's annular, but annular preferably shown in Figure 2, guarantee that in theory reduction reaction pipe 2 each temperature gradient radially are consistent, thereby further improve uniformity material heating in the reduction reaction pipe 2.
As shown in Figure 1, for the ease of the construction of shaft furnace, described reduction reaction pipe 2 can axially be docked by at least two tube couplings 3 and form.Tube coupling 3 is ready-made single piece, can obtain by outsourcing, carborundum tube high temperature resistant such as adopting, good thermal conduction.After adopting said structure, tube coupling 3 that only need specification is identical when building shaft furnace axially butt joint gets up just can form reduction reaction pipe 2, thereby has saved time and the cost built greatly.
Certainly, reduction reaction pipe 2 also can be the single piece of casting.When building shaft furnace, directly reduction reaction pipe 2 is fixedly mounted on body of heater 1 interior getting final product like this, has the advantage that makes things convenient for shaft furnace to build equally.But no matter reduction reaction pipe 2 is combining structure or overall structure, both can adopt carborundum tube, also can adopt the good materials of heat transfer such as heat resisting cast steel, heat-resistance stainless steel, compare wall brick and have higher heat conduction efficiency, therefore also just improve the efficient of heat utilization.
Shown in Fig. 1, Fig. 3～5, upper port 201 places of reduction reaction pipe 2 also are provided with the distribution device 8 of the sizing that is used for setting up defences on the inwall upper berth of reduction reaction pipe 2.The effect of distribution device 8 is when the material of reduction reaction is carried out in adding in reduction reaction tube 2, the sizing of can also setting up defences simultaneously on the inwall upper berth of reduction reaction pipe 2, the material that carries out reduction reaction is owing to the obstruct that is subjected to this anti-sizing can't contact with the inwall of reduction reaction pipe 2, thereby the inwall that prevents material and reduction reaction pipe 2 takes place bonding.Therefore, the selection for anti-sizing contacts with the inwall of reduction reaction pipe 2 so long as can prevent material, and can not cause the material of adverse effect to reduction reaction, all is feasible in theory.Such as, anti-sizing both can adopt material required when carrying out reduction reaction (such as desulfurizing agent), also can adopt fully not the solid particle with the material generation chemical reaction that carries out reduction reaction, but need carry out secondary separation to reacted product.
Certainly, the distribution device 8 inwall upper berth that can adopt multiple concrete structure to be implemented in reduction reaction pipe 2 sizing of setting up defences.As shown in Figure 5, the simplest mode is exactly directly to use discharger 803 to spray anti-sizing near the inwall of reduction reaction pipe 2, and discharger 802 is carried out the material of reduction reaction near the center spray of reduction reaction pipe 2.But this mode is not easy to guarantee the uniformity and the accuracy of cloth.
Therefore, the present invention also provides a kind of preferred structure of distribution device 8.As shown in Figure 3, the distribution device 8 of this preferred structure comprises the upper port 201 interior cloth tubes 801 as material channel that are arranged on reduction reaction pipe 2, constitutes the admission passage 804 of anti-sizing between the inwall of the outer wall of this cloth tube 801 and reduction reaction pipe 2.Wherein, the peripheral shape of described cloth tube 801 peripheral shapes best and reduction reaction pipe 2 upper port 201 are suitable, and the inwall of reduction reaction pipe 2 falls so that anti-sizing can be fitted fully, reaches desirable distributing anti-adhesion material effect.
The distribution device 8 of this preferred structure in use; the material that carries out reduction reaction directly enters reduction reaction pipe 2 from the tube chamber of cloth tube 801; anti-sizing then enters reduction reaction pipe 2 from the admission passage 804 that is constituted between the inwall of the outer wall of cloth tube 801 and reduction reaction pipe 2; both guaranteed that anti-sizing and the cloth direction of carrying out the material of reduction reaction can not interfere mutually; and can make anti-sizing form one by admission passage 804 again and be similar to tubulose; by the formed protection curtain of the moving particle of not stopping transport; and after material and antiseized material are deposited in the reduction reaction pipe 2; what directly contact with reduction reaction pipe 2 inwalls is anti-sizing; the material that carries out reduction reaction then is laid on the internal layer of anti-sizing, thereby has stopped material and the bonding problem of reduction reaction pipe 2 inwalls completely.
In addition, as shown in Figure 3, the upper end bore of cloth tube 801 makes cloth tube 801 form the structure of a positive taper preferably less than its lower end bore like this, anti-sizing inwall better and reduction reaction pipe 2 is fitted, can make things convenient for the installation of discharger 803 again.
Need to prove, the distribution device 8 of this preferred structure preferably also should increase with the discharger 802 of the upper port 805 corresponding settings of cloth tube 801 and with the discharger 803 of the upper port 201 corresponding settings of reduction reaction pipe 2 so that the cloth operation realizes supplying with automatically.
Certainly, distribution device 8 also can adopt some other distressed structure, will describe in an embodiment.
In addition, as shown in Figure 1, bottom discharge mechanism as this external combustion tube type direct reduction shaft furnace, comprise that the below that is arranged on reduction reaction pipe 2 lower port, one do stretching motion supporting plate 6, when dragging supporting plate 6 when protruding, reacted material falls from the lower port of reduction reaction pipe 2, and accumulates in the bottom of reduction reaction pipe 2; When promoting supporting plate 6 inside withdrawals, the material behind the front end driving a reaction of supporting plate 6 is discharged from the discharging opening 7 of body of heater 1 bottom at this moment.
External combustion tube type direct reduction shaft furnace shown in Fig. 1～3 is arranged with many reduction reaction pipes 2 in the body of heater 1, be provided with at interval between the adjacent reduction reaction pipe 2.The coherent zone that forms between the outside of all reduction reaction pipes 2 and body of heater 1 inwall is combustion chamber 4.Combustion chamber 4 adopts coal gas to light.Facilities such as the flue of combustion chamber 4 and gas passage all can adopt existing structure, and are therefore also not shown in the drawings.Adopt this kind set-up mode to make the neighboring area of each root reduction reaction pipe 2 be the hot environment of burning, thereby the material in each reduction reaction pipe 2 is carried out more even, stable heating, and, therefore guaranteed the unit production capacity of shaft furnace owing to be arranged with many reduction reaction pipes 2 in the body of heater 1.
Wherein, be provided with distribution device 8 respectively at upper port 201 places of each reduction reaction pipe 2.Each distribution device 8 comprises the upper port 201 interior cloth tubes 801 as material channel that are arranged on reduction reaction pipe 2, constitutes the admission passage 804 of anti-sizing between the inwall of the outer wall of this cloth tube 801 and reduction reaction pipe 2; Distribution device 8 also comprises discharger 802 and discharger 803, is respectively applied in cloth tube 801 to add the material that carries out reduction reaction and to add anti-sizing to admission passage 804.Therefore, discharger 802 is are provided with corresponding with the upper port of described material channel, and discharger 803 is are provided with corresponding with the upper port of described admission passage 804.Wherein, with the discharging opening of the discharger 803 of the corresponding setting of the upper port of described admission passage 804 along the peripheral intervals of these admission passage 804 upper port or be provided with continuously.Discharger 802 and discharger 803 can adopt multiple existing apparatus, such as belt conveyor.Owing to adopted the distribution device 8 of said structure, the bonding problem of generation between the material of thoroughly having stopped to carry out reduction reaction and the inwall of reduction reaction pipe 2.
As seen, the common feature of the distributing anti-adhesion material device of embodiment 1 and embodiment 2 is, comprise the material channel with the feeding inlet of reduction reaction pipe 2, and the periphery of described material channel is provided with the admission passage 804 of anti-sizing.Therefore, the distributing anti-adhesion material device of embodiment 1 and embodiment 2 all can be implemented in from the charging aperture of reduction reaction pipe 2 adds material to reduction reaction pipe 2 when, in reduction reaction pipe 2, add the distributing method of anti-sizing at the inwall of all edges of described charging aperture reduction reaction pipe 2, thereby prevent that by the iris action of anti-sizing the inwall of material and reduction reaction pipe 2 from taking place bonding.
The applicant it may be noted that the foregoing description is that distributing anti-adhesion material device of the present invention is installed to concrete application on a kind of novel external combustion tube type direct reduction shaft furnace.Therefore, said reduction reaction pipe 2 among this embodiment is actually the concrete concept of " reaction vessel " among the application.
Claims (7)
1. be used for the distributing anti-adhesion material method of shaft furnace, it is characterized in that: the charging aperture from reaction vessel adds material to reaction vessel when, in reaction vessel, add anti-sizing at the inwall of all edges of described charging aperture reaction vessel.
2. the distributing anti-adhesion material device that is used for shaft furnace, comprise material channel with the feeding inlet of reaction vessel, it is characterized in that: the periphery of described material channel is provided with when from this material channel adds material to reaction vessel when, adds the admission passage (804) of anti-sizing in reaction vessel along the inwall of reaction vessel.
3. the distributing anti-adhesion material device that is used for shaft furnace as claimed in claim 2, it is characterized in that: comprise in the upper port (201) that is arranged on reaction vessel as the cloth tube (801) of material channel, the outer wall of this cloth tube (801) and reaction vessel inwall between constitute the admission passage (804) of preventing sizing.
4. the distributing anti-adhesion material device that is used for shaft furnace as claimed in claim 3 is characterized in that: the peripheral shape of the upper port (201) of the peripheral shape of described cloth tube (801) and described reaction vessel is suitable.
5. the distributing anti-adhesion material device that is used for shaft furnace as claimed in claim 3 is characterized in that: the upper end bore of described cloth tube (801) is less than its lower end bore.
6. as the described distributing anti-adhesion material device that is used for shaft furnace of any claim in the claim 3～5, it is characterized in that: this distributing anti-adhesion material device also comprise with the discharger (802) of the corresponding setting of the upper port of described material channel and with the discharger (803) of the corresponding setting of upper port of described admission passage (804).
7. the distributing anti-adhesion material device that is used for shaft furnace as claimed in claim 6 is characterized in that: with the discharging opening of the discharger (803) of the corresponding setting of upper port of described admission passage (804) along the peripheral intervals of this admission passage (804) upper port or be provided with continuously.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010101604848A CN101813412B (en) | 2010-04-30 | 2010-04-30 | Method and device for distributing anti-adhesion material for shaft furnace |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010101604848A CN101813412B (en) | 2010-04-30 | 2010-04-30 | Method and device for distributing anti-adhesion material for shaft furnace |
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| Publication Number | Publication Date |
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| CN101813412A CN101813412A (en) | 2010-08-25 |
| CN101813412B true CN101813412B (en) | 2011-09-14 |
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| CN2010101604848A Expired - Fee Related CN101813412B (en) | 2010-04-30 | 2010-04-30 | Method and device for distributing anti-adhesion material for shaft furnace |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN116769994B (en) * | 2023-08-25 | 2023-11-17 | 山西冶金工程技术有限公司 | Material loosening device of gas-based reduction shaft furnace |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2594748Y (en) * | 2002-08-08 | 2003-12-24 | 天津天铁冶金集团有限公司 | Rectangular distributor of vertical gas kiln for activated lime |
| CN2614338Y (en) * | 2003-04-07 | 2004-05-05 | 河南豫光金铅股份有限公司 | Stick resistant protector for water jacket of charging opening of bottom blowing furnace |
| CN201166513Y (en) * | 2007-10-25 | 2008-12-17 | 李志忠 | Coal base direct-reduced iron external heating type high furnace |
| CN201688682U (en) * | 2010-04-30 | 2010-12-29 | 攀枝花市创盛粉末冶金有限责任公司 | Anti-adhesion cloth device |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4308878B2 (en) * | 2007-09-07 | 2009-08-05 | 新日本製鐵株式会社 | Vertical furnace |
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Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2594748Y (en) * | 2002-08-08 | 2003-12-24 | 天津天铁冶金集团有限公司 | Rectangular distributor of vertical gas kiln for activated lime |
| CN2614338Y (en) * | 2003-04-07 | 2004-05-05 | 河南豫光金铅股份有限公司 | Stick resistant protector for water jacket of charging opening of bottom blowing furnace |
| CN201166513Y (en) * | 2007-10-25 | 2008-12-17 | 李志忠 | Coal base direct-reduced iron external heating type high furnace |
| CN201688682U (en) * | 2010-04-30 | 2010-12-29 | 攀枝花市创盛粉末冶金有限责任公司 | Anti-adhesion cloth device |
Non-Patent Citations (1)
| Title |
|---|
| JP特开2009-79288A 2009.04.16 |
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