CN102679734A - Heating furnace with double furnace bodies - Google Patents
Heating furnace with double furnace bodies Download PDFInfo
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- CN102679734A CN102679734A CN2012101969121A CN201210196912A CN102679734A CN 102679734 A CN102679734 A CN 102679734A CN 2012101969121 A CN2012101969121 A CN 2012101969121A CN 201210196912 A CN201210196912 A CN 201210196912A CN 102679734 A CN102679734 A CN 102679734A
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Abstract
The invention is suitable for heating and roasting blocky materials such as an iron alloy for steelmaking and the like and relates to a heating furnace with double furnace bodies. The heating furnace comprises an outer furnace body, an inner furnace body and a furnace cover, wherein the outer furnace body is a steel container and is provided with a heat-insulating layer; a bearing platform is arranged inside the outer furnace body; a sealing ring is arranged at the upper part of the outer furnace body; ventilation holes are respectively formed in the upper side and the lower side of the bearing platform of the outer furnace body; a grate made of heat-resistant steel is arranged at the bottom of the inner furnace body; a hoisting hole or a hoisting lug shaft is arranged at the upper part of the inner furnace body; an iron alloy material is accommodated inside the inner furnace body; the inner furnace body is laid on the bearing platform in the outer furnace body; a contacted surface between the inner furnace body and the bearing platform in the outer furnace body is a sealing surface; the furnace cover is laid on the sealing ring of the outer furnace body; and when the furnace cover is moved away, the inner furnace body can be hoisted into or out of the outer furnace body. The heating furnace disclosed by the invention has the advantages of uniformity in heating of the iron alloy material, simple structure, high reliability, no burning nozzle in the furnace, no local high temperature, no possibility of burning out a furnace wall, high thermal efficiency, reliable performance and long service life, and a general flue gas furnace is used in a matching manner.
Description
Technical field
The invention belongs to stove technical field (F27), relate to a kind of bulk, granular material heating furnace, especially ferroalloy pellet heating furnace.
Background technology
In commercial production, often need heat bulk or granular material.So-called bulk or granular material are meant sphere, short cylindrical shape or particle diameter in irregular shape at the solids more than 5 millimeters, and lump material generally is meant particle diameter at the solids more than 20 millimeters, and modal lump material is a crushed stone.The ferroalloy material also is a kind of bulk or granular material, in STEELMAKING PRODUCTION, in order to adjust molten steel composition and to reduce harmful element content, need in molten steel, add ferroalloy.Usually, ferroalloy is block or granular.In order to remove the crystallization water in the ferroalloy, and reduce the effects of reduced temperature of ferroalloy to molten steel, need carry out heated baking to ferroalloy, usually, the temperature of ferroalloy need reach 400 ℃～500 ℃.What steel mill generally adopted at present is shaft furnace formula bakeout oven for ferro-alloy, and alloy material is contained in the burner hearth, and by the fuel burner nozzle heat supply that is arranged on the body of heater, its weak point is: the ferroalloy heating-up temperature is inhomogeneous; Near the burner alloy material is prone to over hot melting, and very low away from the alloy material temperature of burner, have in addition have only about 100 ℃; Can only remove surface moisture, and can not remove the inner crystallization water of ferroalloy material, and body of heater, furnace wall are often burnt out; Become a weak link on the STEELMAKING PRODUCTION, and existing oven heat insulation effect is bad, heat scatters and disappears easily; The thermal efficiency is low, and simultaneously, also there is the problem that fuel gas buring is insufficient, power consumption is big in it.
Summary of the invention
The objective of the invention is to overcome the prior art deficiency and a kind of twin furnace body heating furnace is provided, solve the uneven problem of heating-up temperature, and improve the thermal efficiency, reduce the heating energy consumption.
The technical scheme that the present invention adopts: twin furnace body heating furnace is characterized in that: it comprises external furnace body, inner furnace body, bell.External furnace body is a steel vessel; Outer surface or inner surface are provided with insulating; Scatter and disappear to reduce heat, reduce the heating energy consumption, the upper and lower sides that set inside has cushion cap, top to be provided with sealing ring, its cushion cap is respectively arranged with passage; When the passage that is arranged on the cushion cap downside during as air inlet, the passage that is arranged on the cushion cap upside is as the gas outlet; When the passage that is arranged on the cushion cap upside during as air inlet, the passage that is arranged on the cushion cap downside is as the gas outlet.The inner furnace body bottom is provided with comb plate, the top of being processed by heat resisting steel and is provided with the hole for hoist more than two or two or lifts gudgeon, inner splendid attire ferroalloy material.Inner furnace body is sat on the cushion cap that is placed in the external furnace body, and the contact-making surface of the cushion cap in inner furnace body and the external furnace body is a sealing surface; Bell is sat and is placed on the sealing ring on the external furnace body; After bell was removed, external furnace body can lifted up into or hung out to inner furnace body.
The bell of described twin furnace body heating furnace is provided with flow equalizing ring; Flow equalizing ring is by forming with the barrel portion of bell center arranged off-centre with the baffle part that the bell centres is arranged; Enclose the crescent passage between body of heater, the bell; The air-flow velocity that compiles is even, makes the air-flow of the inner furnace body ferroalloy material of flowing through more even.
The external furnace body of described twin furnace body heating furnace is provided with cannelure, and sealing ring is arranged in the cannelure, in the production process, and water-filling in the cannelure, sealing ring is under the protection of water, and the life-span is longer.
Described twin furnace body heating furnace is provided with the opening and closing lid device, and bell is connected with the opening and closing lid device, can is opened or cover by the opening and closing lid device.
Be provided with the guide post of when inner furnace body is lifted up into, inner furnace body being located in the external furnace body of described twin furnace body heating furnace.Guide post is circular layout in stove, forms big, young circular cone annular down suitable for reading, when inner furnace body lift up into time ratio be easier to get into suitable for reading, then under the guiding of guide post accurately seat be placed on the cushion cap.
The operation principle of twin furnace body heating furnace is:
The heated baking process of twin furnace body heating furnace is periodic.Inner furnace body installs the ferroalloy material outside stove, hang in the external furnace body with bridge crane or miscellaneous equipment, sits to be placed on the cushion cap, and external furnace body covers bell, and bell and external furnace body form tight seal through sealing ring; Then, begin heating, combustion fan is with air pressurized, with the burner combustion that together gets into the flue gas stove from the combustion gas of gas pipeline; The hot flue gas that burning produces gets in the stove through the air inlet of twin furnace body heating furnace, passes the ferroalloy material in the inner furnace body, and hot gas and ferroalloy material carry out heat exchange, heating ferroalloy material; Reduce self temperature and become waste gas, discharge from the gas outlet at last, along with the rising of ferroalloy material temperature; Heating process is carried out gradually, after the ferroalloy material is heated to set point of temperature, stops heating; Open bell, inner furnace body is hung out, the ferroalloy material is sent to steel ladle with crane.
The series connection of twin furnace body heating furnace is used, can further be improved the thermal efficiency.Concrete mode is following:
Three heating furnaces are formed one group, when beginning to heat, through the switch of valve; A stove air inlet is communicated with the flue gas stove, and its gas outlet is communicated with No. two stove air inlets, the standby of No. three stove loading and unloading material; The high-temperature flue gas that the flue gas stove produces gets into ferroalloy material heat exchange in stove and the stove after mixed wind temperature adjustment; Temperature reduces becomes waste gas, gets into stove again No. two after discharging from a stove gas outlet, and the waste heat in the waste gas is further absorbed by the low temperature ferroalloy material in No. two stoves; Discharge from the gas outlet of No. two stoves and get into smoke stack emission, the low temperature ferroalloy material in No. two stoves is simultaneously by pre-heating temperature elevation.
After the ferroalloy material in stove reaches set point of temperature, close the stove terminal valve No. one, No. one stove begins discharging, charging; And valve adjustment become; No. two the stove air inlet is communicated with the flue gas stove, and its gas outlet is communicated with No. three stove air inlets, and the high-temperature flue gas that the flue gas stove produces gets into after mixing the wind temperature adjustment in No. two stoves and the stove by the ferroalloy material heat exchange of preheating; Temperature reduces becomes waste gas; Get into stove again No. three after discharging from No. two stove gas outlets, the waste heat in the waste gas is further absorbed by the low temperature ferroalloy material in No. three stoves, discharges from the gas outlet of No. three stoves and gets into smoke stack emission.
After the ferroalloy material in No. two stoves reaches set point of temperature, close the stove terminal valve No. two, No. two stove begins discharging, charging; And valve adjustment become, No. three the stove air inlet is communicated with the flue gas stove, and its gas outlet is communicated with a stove air inlet; The high-temperature flue gas that the flue gas stove produces gets into after mixing the wind temperature adjustment in No. three stoves and the stove by the ferroalloy material heat exchange of preheating;, temperature reduces becomes waste gas, gets into stove again No. one after discharging from No. three stove gas outlets; Waste heat in the waste gas is further absorbed by the low temperature ferroalloy material in stove, discharges from the gas outlet of a stove and gets into smoke stack emission.
So constantly circulation, production process continues.
Combustion fan, flue gas stove, valve, chimney etc. all are common apparatus, can buy from market easily.
The present invention compared with present technology, advantage is:
(1) the ferroalloy material forms thickness uniform in-plane bed after shove charge, and its hot gas flow path is impartial, and velocity flow profile is even, so homogeneous heating; (2) simple in structure, reliability is high; (3) no burner in the heating furnace, no localized hyperthermia can not burn out furnace wall; (4) be used general flue gas stove, dependable performance, the life-span is long; (5) thermal efficiency is high, reduces production costs.
Description of drawings
Fig. 1 is the structural representation of the embodiment of the invention 1;
Fig. 2 is the A-A profile of Fig. 1;
Fig. 3 is the B-B profile of Fig. 1;
Fig. 4 is the E portion partial enlarged drawing of Fig. 1;
Fig. 5 is the structural representation of the embodiment of the invention 2;
Fig. 6 is the C-C profile of Fig. 5;
Fig. 7 is the D portion partial enlarged drawing of Fig. 5;
Fig. 8 is the structural representation of the embodiment of the invention 3;
Fig. 9 is the fundamental diagram of the embodiment of the invention 1;
Figure 10 is the fundamental diagram of the embodiment of the invention 3;
Figure 11, Figure 12 and Figure 13 are the valve switch state diagrams of Figure 10.
The specific embodiment
Carry out detailed explanation with reference to accompanying drawing to realizing twin furnace body heating furnace of the present invention in conjunction with embodiment:
Consult Fig. 1, Fig. 2, Fig. 3, Fig. 4, shown in Figure 9, twin furnace body heating furnace, it comprises external furnace body 1, inner furnace body 2, bell 3.External furnace body 1 is the circular steel container made; Inner surface has insulating, scatters and disappears to reduce heat, reduces the heating energy consumption; Set inside has the cushion cap 11 of annular; Top is provided with annular seal circle 12, and the downside of cushion cap 11 is provided with passage (air inlet) 13, and the upside of cushion cap 11 is provided with passage (gas outlet) 14; Inner furnace body 2 bottoms are provided with comb plate 21, the top that heat resisting steel processes and are provided with two holes for hoist 22, inner splendid attire ferroalloy material 4.Inner furnace body 2 is sat on the cushion cap 11 that is placed in the external furnace body 1, and the contact-making surface of the cushion cap 11 in inner furnace body 2 and the external furnace body 1 is a sealing surface; Bell 3 is sat and is placed on the sealing ring 12 on the external furnace body 1; After bell 3 was removed, external furnace body 1 can lifted up into or hung out to inner furnace body 2; The 6th, Equipment Foundations are used to carry whole twin furnace body heating furnace; The 19th, the dust stratification clearing valve is used to the residue of discharging dust stratification and dropping.S1 is a twin furnace body heating furnace among Fig. 9, and S2 is the flue gas stove, and S3 is a combustion fan, and S4 is a gas pipeline, and S5 is a chimney.0.8 meter of inner furnace body internal diameter, 1.2 meters of charging bed depths, 3.5 tons of charges.
The course of work of present embodiment:
Consult Fig. 5, Fig. 6, shown in Figure 7; The bell 3 of twin furnace body heating furnace is provided with flow equalizing ring 31; Flow equalizing ring 31 is by forming with the barrel portion of bell center arranged off-centre with the baffle plate 311 that the bell centres is arranged; Enclose the crescent passage between body of heater, the bell, the air-flow velocity that compiles is even, makes the air-flow of the inner furnace body ferroalloy material 4 of flowing through more even; External furnace body 1 is provided with cannelure 17, and sealing ring 12 is arranged in the cannelure 17, in the production process, and water-filling in the cannelure 17, sealing ring 12 is under the protection of water, and the life-span is longer; Be provided with the guide post 18 of when inner furnace body 2 is lifted up into, inner furnace body being located in the external furnace body 1; Guide post is circular layout in stove; Form big, young annular down suitable for reading, when inner furnace body 2 lift up into time ratio be easier to get into suitable for reading, then the guiding of guide post 18 under accurately seat be placed on the cushion cap 11.All the other are with embodiment 1.
Consult Fig. 8, Figure 10, Figure 11, Figure 12, shown in Figure 13, twin furnace body heating furnace is provided with opening and closing lid device 5, and bell 3 is connected with opening and closing lid device 5, can is opened or cover by opening and closing lid device 5.The opening and closing lid device comprises the hydraulic cylinder of the lever that is hinged with bell, lever support, activation lever etc.Among Figure 10, S1 is twin furnace body heating furnace (1S1 is a stove, and 2S1 is No. two stoves, and 3S1 is No. three stoves); S2 is the flue gas stove, and S3 is a combustion fan, and S4 is a gas pipeline; S5 is a chimney, and S6 is a valve, totally 9; Among Figure 11, Figure 12, Figure 13, S7 is valve S6 " opening state ", and S8 is valve S6 " off state ".All the other are with embodiment 2.
The course of work of present embodiment:
Twin furnace body heating furnace body is operating as: when needs were opened bell 3, the short end of the hydraulic cylinder pull lever of opening and closing lid device 5, lever were around bearing axle rotation 95 degree, and its long end drives bell 3 and faces upward commentaries on classics 95 degree; When needs were closed bell 3, hydraulic cylinder promoted the short end of lever, and lever is around bearing axle backward rotation 95 degree, and its long end drives bell 3 revolutions 95 degree, and bell 3 covers; Then, hydraulic cylinder applies certain thrust to lever, through the long end of lever bell is applied downward pressure, to offset furnace gas buoyancy, guarantees the bell sealing.
The heated baking process is: when beginning to heat; Shown in figure 11, through the switch of valve S6, the air inlet 13 of a stove 1S1 is communicated with flue gas stove S2; Its gas outlet 14 is communicated with the air inlet 13 of No. two stove 2S1; No. three stove 3S1 loading, unloading material and standby, the high-temperature flue gas that flue gas stove S2 produces mix and get into stove 1S1 and the interior ferroalloy material heat exchange of stove after the wind temperature adjustment, and temperature is lowered into waste gas; After gas outlet 14 discharges of a stove 1S1, get into stove 2S1 again No. two; Waste heat in the waste gas is further absorbed by the low temperature ferroalloy material in No. two stove 2S1, discharges from the gas outlet 14 of No. two stove 2S1 and gets into chimney S5 discharging, and the low temperature ferroalloy material in No. two stove 2S1 is simultaneously by pre-heating temperature elevation.
After the ferroalloy material in stove 1S1 reaches set point of temperature; Shown in figure 12, the terminal valve S6 of a stove 1S1 closes, and No. one stove 1S1 begins discharging, charging; All the other valve S6 states do; The air inlet 13 of No. two stove 2S1 is communicated with flue gas stove S2, and its gas outlet 14 is communicated with the air inlet 13 of No. three stove 3S1, the high-temperature flue gas that flue gas stove S2 produces in getting into No. two stove 2S1 and stove by the ferroalloy material heat exchange of preheating after; Temperature reduces becomes waste gas; Get into stove 3S1 again No. three after discharging from the gas outlet of No. two stove 2S1 14, the waste heat in the waste gas is further absorbed by the low temperature ferroalloy material in No. three stove 3S1, discharges from the gas outlet of No. three stove 3S1 and gets into chimney S5 discharging.
After the ferroalloy material in No. two stove 2S1 reaches set point of temperature; Shown in figure 13, the terminal valve S6 of No. two stove 2S1 closes, and No. two stove 2S1 begins discharging, charging; All the other valve S6 states do; The air inlet 13 of No. three stove 3S1 is communicated with flue gas stove S2, and its gas outlet 14 is communicated with the air inlet 13 of a stove 1S1, the high-temperature flue gas that flue gas stove S2 produces in getting into No. three stove 3S1 and stove by the ferroalloy material heat exchange of preheating after; Temperature reduces becomes waste gas; Get into stove 1S1 again No. one after discharging from the gas outlet of No. three stove 3S1 14, the waste heat in the flue gas is further absorbed by the low temperature ferroalloy material in stove 1S1, discharges from the gas outlet 14 of a stove 1S1 and gets into chimney S5 discharging.
So constantly circulation, production process continues.
All the other are with embodiment 1.
Beneficial effect
The technical scheme that the present invention adopted has solved deficiencies such as the heating-up temperature that exists in the prior art is inhomogeneous, body of heater is often burnt out, the oven heat insulation effect is bad, heat scatters and disappears easily, the thermal efficiency is low well.Has following beneficial effect: (1) homogeneous heating; (2) device structure is simple, and reliability is high; (3) no burner in the heating furnace, no localized hyperthermia can not burn out furnace wall; (4) be used general flue gas stove, dependable performance, the life-span is long; (5) thermal efficiency is high, reduces production costs.
Claims (5)
1. twin furnace body heating furnace; It is characterized in that: it comprises external furnace body, inner furnace body, bell, and the upper and lower sides that external furnace body (1) set inside has cushion cap (11), top to be provided with sealing ring (12), its cushion cap (11) is respectively arranged with passage (13) and (14); Inner furnace body (2) bottom is provided with comb plate (21), inner splendid attire material (4); Inner furnace body (2) is sat on the cushion cap (11) that is placed in the external furnace body (1), and the contact-making surface of the cushion cap (11) in inner furnace body (2) and the external furnace body (1) is a sealing surface; Bell (3) is sat and is placed on the sealing ring (12) on the external furnace body (1); After bell (3) was removed, external furnace body (1) can lifted up into or hung out to inner furnace body (2).
2. twin furnace body heating furnace according to claim 1 is characterized in that: bell (3) is provided with flow equalizing ring (31).
3. twin furnace body heating furnace according to claim 1 is characterized in that: external furnace body (1) is provided with cannelure (17), and sealing ring (12) is arranged in the cannelure (17), the interior water-filling of cannelure (17).
4. twin furnace body heating furnace according to claim 2 is characterized in that: it is provided with opening and closing lid device (5), and bell (3) is connected with opening and closing lid device (5), can is opened or cover by opening and closing lid device (5).
5. twin furnace body heating furnace according to claim 1 is characterized in that: be provided with the guide post (18) of when lifting up into inner furnace body being located when inner furnace body (2) in the external furnace body (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210196912.1A CN102679734B (en) | 2012-06-14 | 2012-06-14 | Heating furnace with double furnace bodies |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210196912.1A CN102679734B (en) | 2012-06-14 | 2012-06-14 | Heating furnace with double furnace bodies |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102679734A true CN102679734A (en) | 2012-09-19 |
| CN102679734B CN102679734B (en) | 2014-08-06 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210196912.1A Expired - Fee Related CN102679734B (en) | 2012-06-14 | 2012-06-14 | Heating furnace with double furnace bodies |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106052406A (en) * | 2016-07-26 | 2016-10-26 | 中冶赛迪工程技术股份有限公司 | Off-line type scrap steel preheating furnace |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB373248A (en) * | 1931-02-13 | 1932-05-13 | Carl Pontoppidan | Process and arrangement for the manufacture in rotary kilns of cement and other products |
| JPH032316A (en) * | 1989-05-29 | 1991-01-08 | S D Fuaanesu Kk | Automatic heat treatment furnace |
| US5909943A (en) * | 1997-11-07 | 1999-06-08 | Aeroglide Corporation | Apparatus for cooling or drying bulk material |
| JP2005344016A (en) * | 2004-06-03 | 2005-12-15 | Zuito Sangyo Kk | Carbonizing furnace |
| CN101070562A (en) * | 2006-05-12 | 2007-11-14 | 万天骥 | Method for producing metallized iron-smelting raw material |
| CN200996631Y (en) * | 2006-11-23 | 2007-12-26 | 孙传阳 | Plant-straw gasifier |
| CN102435063A (en) * | 2011-12-31 | 2012-05-02 | 杭州杭真真空工程技术有限公司 | Alloy baking stove |
-
2012
- 2012-06-14 CN CN201210196912.1A patent/CN102679734B/en not_active Expired - Fee Related
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB373248A (en) * | 1931-02-13 | 1932-05-13 | Carl Pontoppidan | Process and arrangement for the manufacture in rotary kilns of cement and other products |
| JPH032316A (en) * | 1989-05-29 | 1991-01-08 | S D Fuaanesu Kk | Automatic heat treatment furnace |
| US5909943A (en) * | 1997-11-07 | 1999-06-08 | Aeroglide Corporation | Apparatus for cooling or drying bulk material |
| JP2005344016A (en) * | 2004-06-03 | 2005-12-15 | Zuito Sangyo Kk | Carbonizing furnace |
| CN101070562A (en) * | 2006-05-12 | 2007-11-14 | 万天骥 | Method for producing metallized iron-smelting raw material |
| CN200996631Y (en) * | 2006-11-23 | 2007-12-26 | 孙传阳 | Plant-straw gasifier |
| CN102435063A (en) * | 2011-12-31 | 2012-05-02 | 杭州杭真真空工程技术有限公司 | Alloy baking stove |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106052406A (en) * | 2016-07-26 | 2016-10-26 | 中冶赛迪工程技术股份有限公司 | Off-line type scrap steel preheating furnace |
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| CN102679734B (en) | 2014-08-06 |
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