CN102679734B - Heating furnace with double furnace bodies - Google Patents
Heating furnace with double furnace bodies Download PDFInfo
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- CN102679734B CN102679734B CN201210196912.1A CN201210196912A CN102679734B CN 102679734 B CN102679734 B CN 102679734B CN 201210196912 A CN201210196912 A CN 201210196912A CN 102679734 B CN102679734 B CN 102679734B
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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 block, granular material heating furnace, especially ferroalloy granule heating stove.
Background technology
In industrial production, often need to heat bulk or granular material.That so-called bulk or granular material refer to is spherical, short cylindrical shape or the solids of particle diameter in irregular shape more than 5 millimeters, and lump material generally refers to the solids of particle diameter more than 20 millimeters, and modal lump material is crushed stone.Iron alloy material is also 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.Conventionally, ferroalloy is block or granular.In order to remove the crystallization water in ferroalloy, and reduce the effects of reduced temperature of ferroalloy to molten steel, need to carry out heated baking to ferroalloy, conventionally, the temperature of ferroalloy need to reach 400 DEG C～500 DEG C.What steel mill generally adopted at present is shaft furnace formula bakeout oven for ferro-alloy, alloy material is contained in burner hearth, by the fuel burner nozzle heat supply being arranged on body of heater, its weak point is: ferroalloy heating-up temperature is inhomogeneous, near the easy over hot melting of alloy material burner, and it is very low away from the alloy material temperature of burner, what have even only has 100 DEG C of left and right, can only remove surface moisture, and can not remove the crystallization water of iron alloy material inside, and body of heater, furnace wall is often burned, become a weak link in STEELMAKING PRODUCTION, and existing oven heat insulation effect is bad, heat easily scatters and disappears, the thermal efficiency is low, simultaneously, it also exists fuel gas buring insufficient, large problem consumes energy.
Summary of the invention
The object of the invention is to overcome prior art deficiency and a kind of double-furnace-body double heating furnace is provided, solve the inhomogeneous problem of heating-up temperature, and improve the thermal efficiency, reduce heating energy consumption.
The technical solution used in the present invention: double-furnace-body double heating furnace, is characterized in that: it comprises external furnace body, inner furnace body, bell.External furnace body is steel vessel, outer surface or inner surface are provided with insulating, to reduce heat loss, reduce heating energy consumption, inside is provided with the upper and lower sides that cushion cap, top be provided with sealing ring, its cushion cap and is respectively arranged with passage, when the passage that is arranged on cushion cap downside is during as air inlet, be arranged on the passage of cushion cap upside as gas outlet; When the passage that is arranged on cushion cap upside is during as air inlet, be arranged on the passage of cushion cap downside as gas outlet.Inner furnace body bottom is provided with grate plate, the top of being made up of heat resisting steel and is provided with more than two or two holes for hoist or lifts gudgeon, inner splendid attire iron alloy material.Inner furnace body is sat on the cushion cap being placed in external furnace body, and the contact-making surface of the cushion cap in inner furnace body and external furnace body is sealing surface; Bell is sat on the sealing ring being placed on external furnace body; After bell is removed, external furnace body can be lifted up into or be hung out to inner furnace body.
On the bell of described double-furnace-body double heating furnace, be 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 bell centres is arranged, between body of heater, bell, enclose crescent passage, the air-flow velocity collecting is even, and the air-flow of the inner furnace body iron alloy material that makes to flow through is more even.
On the external furnace body of described double-furnace-body double heating furnace, be provided with cannelure, sealing ring is arranged in cannelure, in production process, and water-filling in cannelure, sealing ring is under the protection of water, and the life-span is longer.
Described double-furnace-body double heating furnace is provided with opening and closing lid device, and bell is connected with opening and closing lid device, can is opened or cover by opening and closing lid device.
In the external furnace body of described double-furnace-body double heating furnace, be provided with the guide post to inner furnace body location in the time that inner furnace body is lifted up into.Guide post is circular layout in stove, forms the circular cone annular of big upper and lower small mouth, lifts up into time ratio be easier to enter suitable for reading when inner furnace body, then under the guiding of guide post, accurately sits and is placed on cushion cap.
The operation principle of double-furnace-body double heating furnace is:
The heated baking process of double-furnace-body double heating furnace is periodic.Inner furnace body installs iron alloy material outward at stove, hangs in external furnace body with bridge crane or miscellaneous equipment, sits and is placed on cushion cap, and external furnace body covers bell, and bell and external furnace body form tight seal by sealing ring, then, start heating, combustion fan is by air pressurized, together enter the burner combustion of combustion gas furnace with the combustion gas from gas pipeline, the hot flue gas that burning produces enters in stove through the air inlet of double-furnace-body double heating furnace, through the iron alloy material in inner furnace body, hot gas and iron alloy material carry out heat exchange, heating iron alloy material, reduce self temperature and become waste gas, finally discharge from gas outlet, along with the rising of iron alloy material temperature, heating process is carried out gradually, when iron alloy material is heated to after set point of temperature, stop heating, open bell, inner furnace body is hung out with crane, iron alloy material is sent to steel ladle.
The series connection of double-furnace-body double heating furnace is used, can further improve the thermal efficiency.Concrete mode is as follows:
Three heating furnaces form one group, while starting to heat, by the switch of valve, a stove air inlet is communicated with combustion gas furnace, its gas outlet is communicated with No. two stove air inlets, the standby of No. three stove handling material, the high-temperature flue gas that combustion gas furnace produces enters iron alloy material heat exchange in stove and stove after mixed wind temperature adjustment, temperature reduces becomes waste gas, from discharging, a stove gas outlet enters again stove No. two, waste heat in waste gas is further absorbed by the Low-temperature Iron alloy material in No. two stoves, discharge and enter smoke stack emission from the gas outlet of No. two stoves again, Low-temperature Iron alloy material in No. two stoves is preheated intensification simultaneously.
When the iron alloy material in a stove reaches after set point of temperature, close stove terminal valve No. one, No. one stove starts discharging, charging, and valve adjustment is become, No. two stove air inlet is communicated with combustion gas furnace, its gas outlet is communicated with No. three stove air inlets, the high-temperature flue gas that combustion gas furnace produces enters the iron alloy material heat exchange being preheated in No. two stoves and stove after mixed wind temperature adjustment, temperature reduces becomes waste gas, from discharging, No. two stove gas outlets enter again stove No. three, waste heat in waste gas is further absorbed by the Low-temperature Iron alloy material in No. three stoves, discharge and enter smoke stack emission from the gas outlet of No. three stoves again.
When the iron alloy material in No. two stoves reaches after set point of temperature, close stove terminal valve No. two, No. two stove starts discharging, charging, and valve adjustment is become, No. three stove air inlet is communicated with combustion gas furnace, its gas outlet is communicated with a stove air inlet, the high-temperature flue gas that combustion gas furnace produces enters the iron alloy material heat exchange being preheated in No. three stoves and stove after mixed wind temperature adjustment, , temperature reduces becomes waste gas, from discharging, No. three stove gas outlets enter again stove No. one, waste heat in waste gas is further absorbed by the Low-temperature Iron alloy material in a stove, discharge and enter smoke stack emission from the gas outlet of a stove again.
So constantly circulation, production process continues.
Combustion fan, combustion gas furnace, valve, chimney etc. are all common apparatus, can buy from the market easily.
Compared with the prior art, advantage is in the present invention:
(1) iron alloy material forms the plane bed of even thickness after shove charge, its hot gas flow path equalization, and velocity flow profile is even, so homogeneous heating; (2) simple in structure, reliability is high; (3) heating furnace is interior without burner, without localized hyperthermia, can not burn out furnace wall; (4) be used in conjunction with general combustion gas furnace, dependable performance, the life-span is long; (5) thermal efficiency is high, reduces production costs.
Brief description of the drawings
Fig. 1 is the structural representation of the embodiment of the present 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 present 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 present invention 3;
Fig. 9 is the fundamental diagram of the embodiment of the present invention 1;
Figure 10 is the fundamental diagram of the embodiment of the present invention 3;
Figure 11, Figure 12 and Figure 13 are the valve switch state diagrams of Figure 10.
Detailed description of the invention
Be described in detail realizing double-furnace-body double heating furnace of the present invention with reference to accompanying drawing in conjunction with the embodiments:
embodiment 1
Consult shown in Fig. 1, Fig. 2, Fig. 3, Fig. 4, Fig. 9, double-furnace-body double heating furnace, it comprises external furnace body 1, inner furnace body 2, bell 3.External furnace body 1 is circular steel container made, inner surface has insulating, to reduce heat loss, reduce heating energy consumption, inside is provided with 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 grate plate 21, the top that heat resisting steel makes and are provided with two holes for hoist 22, inner splendid attire iron alloy material 4.Inner furnace body 2 is sat on the cushion cap 11 being placed in external furnace body 1, and the contact-making surface of the cushion cap 11 in inner furnace body 2 and external furnace body 1 is sealing surface; Bell 3 is sat on the sealing ring 12 being placed on external furnace body 1; After bell 3 is removed, external furnace body 1 can be lifted up into or be hung out to inner furnace body 2; The 6th, Equipment Foundations, for carrying whole double-furnace-body double heating furnace; The 19th, dust stratification clearing valve, for the residue of discharging dust stratification and dropping.In Fig. 9, S1 is double-furnace-body double heating furnace, and S2 is combustion gas furnace, and S3 is combustion fan, and S4 is gas pipeline, and S5 is 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 the present embodiment:
Inner furnace body 2 installs iron alloy material 4 outward at stove, hangs on hole for hoist 22 and is suspended in external furnace body 1 with bridge crane or miscellaneous equipment, sits and is placed on cushion cap 11, and external furnace body 1 covers bell 3, and bell 3 forms tight seal with external furnace body 1 by sealing ring 12, then, start heated baking, combustion fan S3 provide combustion air, gas pipeline S4 supplies coal gas, air, coal gas enters the burner combustion of combustion gas furnace S2, high-temperature gas mixes generation temperature with temperature adjustment gas (nitrogen or air) be the thermal current of 550 DEG C of left and right, thermal current enters in stove through air inlet 13 by utilidor, through the iron alloy material 4 in grate plate 21 and inner furnace body 2, thermal current and iron alloy material 4 carry out heat exchange, heating iron alloy material 4, self temperature reduces becomes waste gas, finally discharge and enter chimney from gas outlet 14, along with the rising of iron alloy material 4 temperature, bake process carries out gradually.After baking, open bell 3, inner furnace body 2 is lifted to the outer discharging of external furnace body 1 together with iron alloy material one with bridge crane or other hanging device; After inner furnace body 2 dischargings, again feed outward at stove.And so forth, continue to go on heated baking Period Process.
embodiment 2
Consult shown in Fig. 5, Fig. 6, Fig. 7, on the bell 3 of double-furnace-body double heating furnace, be 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 bell centres is arranged, between body of heater, bell, enclose crescent passage, the air-flow velocity collecting is even, and the air-flow of the inner furnace body iron alloy material 4 that makes to flow through is more even; On external furnace body 1, be provided with cannelure 17, sealing ring 12 is arranged in cannelure 17, in production process, and the interior water-filling of cannelure 17, sealing ring 12 is under the protection of water, and the life-span is longer; In external furnace body 1, be provided with the guide post 18 to inner furnace body location in the time that inner furnace body 2 is lifted up into, guide post is circular layout in stove, form the annular of big upper and lower small mouth, lift up into time ratio when inner furnace body 2 and be easier to enter suitable for reading, then under the guiding of guide post 18, accurately sit and be placed on cushion cap 11.All the other are with embodiment 1.
embodiment 3
Consult shown in Fig. 8, Figure 10, Figure 11, Figure 12, Figure 13, double-furnace-body double 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.Opening and closing lid device comprises lever, the lever support, the hydraulic cylinder of activation lever etc. that are hinged with bell.In Figure 10, S1 is that (1S1 is a stove to double-furnace-body double heating furnace, and 2S1 is No. two stoves, 3S1 is No. three stoves), S2 is combustion gas furnace, and S3 is combustion fan, and S4 is gas pipeline, S5 is chimney, S6 is valve, totally 9, and Figure 11, Figure 12, Tu13Zhong, 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 the present embodiment:
Double-furnace-body double heating furnace body is operating as: in the time that needs are opened bell 3, and the hydraulic cylinder pull lever short end of opening and closing lid device 5, lever rotates 95 degree around bearing axle, and its long end drive bell 3 is faced upward and is turned 95 degree; In the time that needs are closed bell 3, Hydraulic Cylinder lever short end, lever rotates backward 95 degree around bearing axle, and its long end drives bell 3 to turn round 95 degree, and bell 3 covers; Then, hydraulic cylinder applies certain thrust to lever, by lever long end, bell is applied to downward pressure, to offset furnace gas buoyancy, ensures bell sealing.
Heated baking process is: while starting to heat, as shown in figure 11, by the switch of valve S6, the air inlet 13 of a stove 1S1 is communicated with combustion gas furnace S2, its gas outlet 14 is communicated with the air inlet 13 of No. two stove 2S1, No. three stove 3S1 dresses, discharging standby, after the mixed wind temperature adjustment of high-temperature flue gas that combustion gas furnace S2 produces, enter stove 1S1 and the interior iron alloy material heat exchange of stove, temperature is lowered into waste gas, from discharging, the gas outlet 14 of a stove 1S1 enters again stove 2S1 No. two, waste heat in waste gas is further absorbed by the Low-temperature Iron alloy material in No. two stove 2S1, discharge and enter chimney S5 discharge from the gas outlet 14 of No. two stove 2S1 again, Low-temperature Iron alloy material in No. two stove 2S1 is preheated intensification simultaneously.
When the iron alloy material in a stove 1S1 reaches after set point of temperature, as shown in figure 12, the terminal valve S6 of a stove 1S1 closes, No. one stove 1S1 starts discharging, charging, all the other valve S6 states are, the air inlet 13 of No. two stove 2S1 is communicated with combustion gas furnace S2, its gas outlet 14 is communicated with the air inlet 13 of No. three stove 3S1, the high-temperature flue gas that combustion gas furnace S2 produces is entering after the iron alloy material heat exchange being preheated in No. two stove 2S1 and stove, temperature reduces becomes waste gas, from discharging, the gas outlet 14 of No. two stove 2S1 enters again stove 3S1 No. three, waste heat in waste gas is further absorbed by the Low-temperature Iron alloy material in No. three stove 3S1, discharge and enter chimney S5 discharge from the gas outlet of No. three stove 3S1 again.
When the iron alloy material in No. two stove 2S1 reaches after set point of temperature, as shown in figure 13, the terminal valve S6 of No. two stove 2S1 closes, No. two stove 2S1 starts discharging, charging, all the other valve S6 states are, the air inlet 13 of No. three stove 3S1 is communicated with combustion gas furnace S2, its gas outlet 14 is communicated with the air inlet 13 of a stove 1S1, the high-temperature flue gas that combustion gas furnace S2 produces is entering after the iron alloy material heat exchange being preheated in No. three stove 3S1 and stove, temperature reduces becomes waste gas, from discharging, the gas outlet 14 of No. three stove 3S1 enters again stove 1S1 No. one, waste heat in flue gas is further absorbed by the Low-temperature Iron alloy material in a stove 1S1, discharge and enter chimney S5 discharge from the gas outlet 14 of a stove 1S1 again.
So constantly circulation, production process continues.
All the other are with embodiment 1.
beneficial effect
The technical solution adopted in the present invention, has solved the deficiencies such as the heating-up temperature existing in prior art is inhomogeneous, body of heater is often burned, oven heat insulation effect is bad, heat easily scatters and disappears, the thermal efficiency is low well.There is following beneficial effect: (1) homogeneous heating; (2) device structure is simple, and reliability is high; (3) heating furnace is interior without burner, without localized hyperthermia, can not burn out furnace wall; (4) be used in conjunction with general combustion gas furnace, dependable performance, the life-span is long; (5) thermal efficiency is high, reduces production costs.
Claims (2)
1. double-furnace-body double heating furnace, it is characterized in that: it comprises external furnace body, inner furnace body, bell, the inside of external furnace body (1) is provided with cushion cap (11), top is provided with sealing ring (12), on the external furnace body (1) of cushion cap (11) upper and lower sides, is respectively arranged with gas outlet (14) and air inlet (13); Inner furnace body (2) bottom is provided with grate plate (21), inner splendid attire material (4); It is upper that inner furnace body (2) is sat the cushion cap (11) being placed in external furnace body (1), and the contact-making surface of the cushion cap (11) in inner furnace body (2) and external furnace body (1) is sealing surface; Bell (3) is sat on the sealing ring (12) being placed on external furnace body (1); After bell (3) is removed, external furnace body (1) can be lifted up into or be hung out to inner furnace body (2), on bell (3), be provided with flow equalizing ring (31), on external furnace body (1), be provided with cannelure (17), sealing ring (12) is arranged in cannelure (17), the interior water-filling of cannelure (17), bell 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).
2. double-furnace-body double heating furnace according to claim 1, is characterized in that: in external furnace body (1), be provided with the guide post (18) to inner furnace body location in the time that inner furnace body (2) is lifted up into.
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 |
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| Publication Number | Publication Date |
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| CN102679734A CN102679734A (en) | 2012-09-19 |
| CN102679734B true CN102679734B (en) | 2014-08-06 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201210196912.1A Expired - Fee Related CN102679734B (en) | 2012-06-14 | 2012-06-14 | Heating furnace with double furnace bodies |
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Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106052406B (en) * | 2016-07-26 | 2018-06-15 | 中冶赛迪工程技术股份有限公司 | A kind of off-line type scrap steel preheating stove |
Citations (4)
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|---|---|---|---|---|
| GB373248A (en) * | 1931-02-13 | 1932-05-13 | Carl Pontoppidan | Process and arrangement for the manufacture in rotary kilns of cement and other products |
| US5909943A (en) * | 1997-11-07 | 1999-06-08 | Aeroglide Corporation | Apparatus for cooling or drying bulk material |
| CN101070562A (en) * | 2006-05-12 | 2007-11-14 | 万天骥 | Method for producing metallized iron-smelting raw material |
| 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 |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH032316A (en) * | 1989-05-29 | 1991-01-08 | S D Fuaanesu Kk | Automatic heat treatment furnace |
| JP2005344016A (en) * | 2004-06-03 | 2005-12-15 | Zuito Sangyo Kk | Carbonizing furnace |
| CN200996631Y (en) * | 2006-11-23 | 2007-12-26 | 孙传阳 | Plant-straw gasifier |
-
2012
- 2012-06-14 CN CN201210196912.1A patent/CN102679734B/en not_active Expired - Fee Related
Patent Citations (4)
| 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 |
| US5909943A (en) * | 1997-11-07 | 1999-06-08 | Aeroglide Corporation | Apparatus for cooling or drying bulk material |
| CN101070562A (en) * | 2006-05-12 | 2007-11-14 | 万天骥 | Method for producing metallized iron-smelting raw material |
| 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 |
Non-Patent Citations (2)
| Title |
|---|
| JP平3-2316A 1991.01.08 |
| JP特开2005-344016A 2005.12.15 |
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