CN203109217U - Heat preservation baking device for steel ladle - Google Patents
Heat preservation baking device for steel ladle Download PDFInfo
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- CN203109217U CN203109217U CN 201320098691 CN201320098691U CN203109217U CN 203109217 U CN203109217 U CN 203109217U CN 201320098691 CN201320098691 CN 201320098691 CN 201320098691 U CN201320098691 U CN 201320098691U CN 203109217 U CN203109217 U CN 203109217U
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- ladle
- insulation
- flue gas
- clad
- heat preservation
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Abstract
The utility model discloses a heat preservation baking device for a steel ladle. The heat preservation baking device comprises a heat preservation ladle for containing the steel ladle to be baked. A heat preservation ladle cover is arranged at the top of the heat preservation ladle. A heating burner nozzle is arranged on the heat preservation ladle cover. A flue gas exhaust pipe is arranged at the bottom of the heat preservation ladle. The flue gas exhaust pipe is connected with a funnel through an exhaust fan. A flue gas gap is arranged between the bottom face of the heat preservation ladle cover and the upper edge of the steel ladle. An air gap is arranged between the side wall of the heat preservation ladle cover and the outer wall of the heat preservation ladle. Interlayer space is arranged between the inner wall of the heat preservation ladle and the outer wall of the steel ladle. Flue gas flowing channels are arranged between the bottom of the heat preservation ladle and the bottom of the steel ladle and are communicated with the flue gas exhaust pipe. Overflowed high-temperature flue gas between the steel ladle and the heat preservation ladle cover is utilized, thus the baking time of a single steel ladle is greatly shortened, heating efficiency is improved and energy is saved. Meanwhile, the situation that the environment of a workshop is polluted by the high-temperature flue gas overflowed between the steel ladle and the heat preservation ladle cover is reduced.
Description
Technical field
The utility model relates to the ladle baking facilities for STEELMAKING PRODUCTION, specifically refers to a kind of ladle heat insulation apparatus for baking.
Background technology
In STEELMAKING PRODUCTION, contact with cold ladle for avoiding molten steel, reduce molten steel to the thermal shock of refractory material, improve the life-span of cylinder-packing, before requiring to pour molten steel into ladle is toasted.During ladle baking, baking temperature and stoving time are the two big factors that influence the life-span of ladle liner: if the ladle baking time is too short, baking back ladle temperature is lower than requirement, and liquid steel temperature is descended, and the bag end also can cause crust when serious; If the ladle baking overlong time, not only influence all transfer efficients of ladle, influence ordinary production, and energy consumption increases, improved the baking cost.
In the evolution of ladle baking facilities, improve from three aspects to the efficient and the quality that improve ladle baking:
(1) ladle stamp, early stage ladle baking is not added a cover, the high-temperature flue gas that fuel combustion produces all mouthful spills in the environment by bag, has not only caused the waste of a large amount of energy, and severe contamination surrounding environment.Therefore strengthen radiation in the stove, improve baking efficient by the mode of giving ladle stamp, still can not solve the waste of high-temperature flue gas waste heat and workshop and diffuse problem of environment pollution caused;
(2) improvement of burner, the ladle baking burner experienced from only with a gas pipe to using improvement such as common burner, high combustion rate burner, hot blast burner, self preheating burner, heat-accumulating burner, mainly contain following three kinds than applied burner in the advanced roasting packet technology at present: (1) self-preheating burner: be characterized in that burner and heat exchanger organically combine, high-temperature flue gas and combustion air that burning produces carry out heat exchange, improve empty, gas temperature, the purpose of the flue gas waste heat recovery that reaches a high temperature.Publication number is that the Chinese patent application of CN201519762U discloses a kind of " heat pipe-type ladle baking facilities ", it adopts heat exchange of heat pipe preheating sky, coal gas to improve ignition temperature and efficiency of combustion, but ladle can't solve along overflow gas loss and workshop pollution problem.(2) at a high speed (at a high speed inferior) burner: be characterized in that burner matches with pre-combustion chamber, make burner carry out partial combustion in precombustion chamber, the acceleration of expanding of combustion product temperature sprays, and satisfies technological requirement.That publication number is that the Chinese patent application of CN201419240Y discloses is a kind of " be applicable to multiple industrial combustion gas do the ladle baking facility of fuel ", it adopts the high combustion rate burner structure to improve the length of flame, but it does not reclaim the high-temperature flue gas waste heat, though flame impingement intensity height, the thermal efficiency is low.(3) heat-accumulating burner: it is made up of paired burner and heat storage, and when one of them burner and heat storage heat supply, combustion air is by the heat storage preheating, and another can reclaim fume afterheat to greatest extent to burner and heat storage smoke evacuation and store heat.Technical scheme in the Chinese patent " Ladle Regenerative Device " that publication number is the Chinese patent " heat storing type ladle baker " of CN101298098B, Chinese patent " a kind of heat storing type ladle baker " that publication number is CN201841254U, publication number is CN2465841Y all is to adopt the heat accumulating type structure to improve the level of utilizing of high-temperature flue gas, but still be confined to burner and improve, can't solve flue gas along the ladle bag along excessive problem.
(3) UTILIZATION OF VESIDUAL HEAT IN, Chinese patent 200920144872X " a kind of series ladle baking device " discloses and a kind ofly will toast the device that the remaining waste gas of ladle toasts other ladles, but it needs several series ladles to get up, strengthened the organization work difficulty of ladle baking, and its flue gas directly is discharged in the workshop, still can't solve the radiation loss of ladle shell greatly and cause the workshop pollution problems.Publication number is to adopt the two-stage baking will toast the remaining waste gas of ladle in the patent " baking technology of metallurgical steel ladle " of CN1064037A to come other ladles of prebake conditions, owing to only adopt the inboard heating of ladle, baking efficient has much room for improvement, and it also can't solve the radiation loss of ladle shell greatly and cause the workshop pollution problems.
This shows, owing to leave certain distance inevitably between insulation clad and the ladle in the produced on-site, part high-temperature flue gas from then on slit overflows diffusing in environment, do not have the technology that this part flue gas is used and handles at present, a large amount of high-temperature flue gas that loose that overflow have not only reduced the exhaust gas volumn of discharging through heat exchanger (heat storage), influence the heat exchange effect, and caused the gaseous contamination in the factory building.In addition, in the ladle baking process, the involucrum outer surface to the external environment dissipated heat, if can improve ambient temperature, also can reach the purpose that reduces heat dissipation capacity, improves the baking thermal efficiency by radiation and convection current.The utility model just utilize the part high-temperature flue gas along bag along loss improve involucrum external environment method of temperature reach capacity recovery waste heat, improve the purpose of baking efficient.
Summary of the invention
The purpose of this utility model is exactly to overcome the defective that existing ladle baking facilities exists, the device that provides the part high-temperature flue gas of a kind of utilization from ladle along loss to improve ladle shell external environment temperature reach capacity recovery waste heat, improve the order of baking efficient, reduce the ladle heat insulation apparatus for baking of loss high-temperature flue gas environmental pollution simultaneously.
For achieving the above object, the ladle heat insulation apparatus for baking that the utility model is designed comprises that its special character is be used to the insulation bag that holds ladle to be baked: described insulation bag top is provided with the insulation clad, and described insulation clad is provided with the heating burner; Described insulation bag bottom is provided with smoke exhaust pipe, and described smoke exhaust pipe links to each other with chimney by air exhauster; Be provided with the flue gas slit between described insulation clad bottom surface and the ladle upper edge, be provided with air gap between described insulation clad sidewall and the insulation bag outer wall; Be provided with mezzanine space between described insulation bag inwall and the ladle outer wall, be provided with the flue gas flow channel that communicates with smoke exhaust pipe between described insulation bag bottom and the ladle bottom.
Further, described insulation bag inwall is provided with temperature thermocouple, and described smoke exhaust pipe is provided with barometric damper.Like this, can utilize barometric damper to adjust the aperture of air exhauster according to the temperature thermocouple temperature displayed, the air inflow of control cold air.
Further, described insulation bag bottom is provided be used to the base of shelving ladle, and described base forms the flue gas flow channel that communicates with smoke exhaust pipe by the fan-shaped prefabricated section of some heavy castable refractories spaced apart composition along the circumferential direction between the adjacent fan-shaped prefabricated section.Like this, the flue gas that goes out from the ladle loss enters smoke exhaust pipe by exhaust gases passes.
Further, described fan-shaped prefabricated section along the circumferential direction evenly is intervally distributed with three.
Further, described insulation clad is made up of clad steel plate, the flange skirtboard that is cast in the anti-material of clad of clad steel plate inboard and is welded on clad steel plate periphery, forms air gap between the vertical edges of described flange skirtboard and the insulation bag outer wall.Can reduce like this from the high-temperature flue gas that overflows and loose between insulation bag and the insulation clad.
Further, described insulation bag is made up of with the anti-material of insulation that is cast in tubbiness shell inboard the tubbiness shell of steel construction.Like this, can when the heating ladle, accumulate heat, energy savings.
Further, the spacing in described flue gas slit is 90 ~ 110mm, and the spacing of described air gap is 90 ~ 110mm; The spacing of described mezzanine space is 285 ~ 315mm, and the height of described flue gas flow channel is 280 ~ 320mm.
Principle of the present utility model is: owing to have certain slit inevitably between insulation clad and the ladle bag edge, the part high-temperature flue gas directly is drained into through this slit and causes energy waste and environmental pollution in the surrounding environment, the design use air exhauster with this part flue gas be drawn into drain into through chimney again behind the heating ladle outer wall in the mezzanine space between ladle and the insulation bag outdoor.In order to control the ladle outside wall temperature, the design utilizes the temperature thermocouple monitoring to enter into the flue-gas temperature of mezzanine space between ladle and the insulation bag, when flue-gas temperature is too high, aperture by strengthening smoke exhaust pipe overdraught control valve is to improve the draft in the interlayer, thereby increase the cold air amount that sucks from the air gap, these cold airs dilute flue gas and are cooled to predetermined temperature; Cross when low when flue-gas temperature, reduce control valve opening to reduce the draft in the interlayer, reduce the cold air amount that sucks from surrounding enviroment, flue-gas temperature improves thereupon.
Advantage of the present utility model is: designed ladle heat insulation apparatus for baking uses heating ladle outer wall with the high-temperature flue gas that looses that overflows between ladle and the insulation clad, played the effect that inside and outside bilateral toasts simultaneously, improve the baking thermal efficiency, shortened stoving time; Simultaneously, insulation bag and high-temperature flue gas have also played insulation effect, and baking speed still is higher than conventional apparatus for baking; And the anti-material of insulation in the insulation bag can will be put aside along a part of heat in the high-temperature flue gas that overflows of ladle bag edge in the ladle baking process, after previous ladle baking finishes, the anti-material of insulation of insulation bag has uniform temperature, when in next ladle is maneuvered into the insulation bag, toasting, being incubated the heat that the anti-volume of timber holds can heat, be incubated the ladle outer wall, and stoving time shortens than conventional apparatus for baking.High-temperature flue gas is extracted into chimney by smoke exhaust fan and discharges outside the workshop after diluting with normal air, avoid workshop condition is polluted.
The utility model uses the high-temperature flue gas that looses that overflows between ladle and the insulation clad, shortened single ladle baking heat time heating time greatly, improved the thermal efficiency, saved the energy, the high-temperature flue gas that having reduced simultaneously overflows between ladle and the insulation clad looses is to the pollution of workshop condition.
Description of drawings
Fig. 1 is a kind of ladle heat insulation apparatus for baking structural representation.
Fig. 2 is the structural representation of base in the ladle heat insulation apparatus for baking shown in Figure 1.
Fig. 3 is the plan structure schematic diagram of base shown in Figure 2.
Each parts label is as follows among the figure: ladle 1, insulation bag 2(wherein: tubbiness shell 2.1, the anti-material 2.2 of insulation), insulation clad 3(wherein: clad steel plate 3.1, the anti-material 3.2 of clad, flange skirtboard 3.3), heating burner 4, temperature thermocouple 5, smoke exhaust pipe 6, barometric damper 7, air exhauster 8, chimney 9, base 10, fan-shaped prefabricated section 10.1, air gap 11, mezzanine space 12, flue gas flow channel 13, flue gas slit 14.
The specific embodiment
The utility model is described in further detail below in conjunction with the drawings and specific embodiments.
Ladle heat insulation apparatus for baking shown in Fig. 1 ~ 3 comprises be used to the insulation bag 2 that holds ladle 1 to be baked, and insulation bag 2 is made up of with the anti-material 2.2 of insulation that is cast in tubbiness shell 2.1 inboards the tubbiness shell 2.1 of steel construction.
During the utility model work, at first ladle 1 is placed on the base 10 of insulation bag 2, and the vertical center line that makes ladle 1 and insulation bag 2 is on same straight line, light heating and will be incubated clad 3 behind the burner 4 and move on the fixing baking position, adjust empty, gas flow and make and heat burner 4 and under nominal situation, burn.Open barometric damper 7 and air exhauster 8, observing temperature thermocouple 5 temperature displayed and adjusting barometric damper 7 apertures makes temperature thermocouple 5 displays temperatures remain on 200 ~ 300 ℃, after ladle 1 is baked to target temperature, close air exhauster 8, insulation clad 3 is moved to and stops on the station, the ladle 1 after the baking is hung away use.
Because the high-temperature flue gas that designed ladle heat insulation apparatus for baking looses overflowing between ladle 1 and the insulation clad 3 uses the heating ladle and surveys outward, has played the effect that inside and outside bilateral toasts simultaneously, has improved the baking thermal efficiency, has shortened stoving time; Simultaneously, insulation bag 2 and high-temperature flue gas have also played insulation effect, and baking speed still is higher than conventional apparatus for baking; And the anti-material 2.2 of insulation in the insulation bag 2 can will be put aside along a part of heat in the flue gas that overflows along ladle 1 bag in the ladle baking process, after previous ladle 1 baking finishes, the anti-material 2.2 of insulation of insulation bag 2 has uniform temperature, when in next ladle 1 is maneuvered into insulation bag 2, toasting, the heat that is incubated anti-material 2.2 savings can heat, be incubated ladle 1 outer wall, and stoving time shortens than conventional apparatus for baking.High-temperature flue gas is extracted into chimney 9 by air exhauster 8 and discharges outside the workshops after diluting with normal air, avoid workshop condition is polluted.
The utility model uses the high-temperature flue gas that looses that overflows between ladle 1 and the insulation clad 3, shortened single ladle baking heat time heating time greatly, improved the thermal efficiency, saved the energy, the high-temperature flue gas that having reduced simultaneously overflows between ladle 1 and the insulation clad 3 looses is to the pollution of workshop condition.
Claims (10)
1. a ladle heat insulation apparatus for baking comprises be used to the insulation bag (2) that holds ladle to be baked (1), it is characterized in that: described insulation bag (2) top is provided with insulation clad (3), and described insulation clad (3) is provided with heating burner (4); Described insulation bag (2) bottom is provided with smoke exhaust pipe (6), and described smoke exhaust pipe (6) links to each other with chimney (9) by air exhauster (8); Be provided with flue gas slit (14) between described insulation clad (3) bottom surface and ladle (1) upper edge, be provided with air gap (11) between described insulation clad (3) sidewall and insulation bag (2) outer wall; Be provided with mezzanine space (12) between described insulation bag (2) inwall and ladle (1) outer wall, described insulation bag (2) bottom is provided with the flue gas flow channel (13) that communicates with smoke exhaust pipe (6) between bottom ladle (1).
2. ladle heat insulation apparatus for baking according to claim 1, it is characterized in that: described insulation bag (2) inwall is provided with temperature thermocouple (5), and described smoke exhaust pipe (6) is provided with barometric damper (7).
3. ladle heat insulation apparatus for baking according to claim 1 and 2, it is characterized in that: described insulation bag (2) bottom is provided be used to the base of shelving ladle (1) (10), described base (10) forms the flue gas flow channel (13) that communicates with smoke exhaust pipe (6) by the fan-shaped prefabricated sections of some heavy castable refractories (10.1) spaced apart composition along the circumferential direction between the adjacent fan-shaped prefabricated section (10.1).
4. ladle heat insulation apparatus for baking according to claim 3, it is characterized in that: described fan-shaped prefabricated section (10.1) along the circumferential direction evenly is intervally distributed with three.
5. ladle heat insulation apparatus for baking according to claim 1 and 2, it is characterized in that: described insulation clad (3) is made up of clad steel plate (3.1), the flange skirtboard (3.3) that is cast in the inboard anti-material of clad (3.2) of clad steel plate (3.1) and is welded on clad steel plate (3.1) periphery, and the vertical edges of described flange skirtboard (3.3) forms air gap (11) with being incubated to wrap between (2) outer wall.
6. ladle heat insulation apparatus for baking according to claim 3, it is characterized in that: described insulation clad (3) is made up of clad steel plate (3.1), the flange skirtboard (3.3) that is cast in the inboard anti-material of clad (3.2) of clad steel plate (3.1) and is welded on clad steel plate (3.1) periphery, and the vertical edges of described flange skirtboard (3.3) forms air gap (11) with being incubated to wrap between (2) outer wall.
7. ladle heat insulation apparatus for baking according to claim 1 and 2 is characterized in that: described insulation bag (2) is by the tubbiness shell (2.1) of steel construction and be cast in the inboard anti-material of insulation (2.2) of tubbiness shell (2.1) and form.
8. ladle heat insulation apparatus for baking according to claim 3 is characterized in that: described insulation bag (2) is by the tubbiness shell (2.1) of steel construction and be cast in the inboard anti-material of insulation (2.2) of tubbiness shell (2.1) and form.
9. ladle heat insulation apparatus for baking according to claim 1 and 2, it is characterized in that: the spacing in described flue gas slit (14) is 90 ~ 110mm, the spacing of described air gap (11) is 90 ~ 110mm; The spacing of described mezzanine space (12) is 285 ~ 315mm, and the height of described flue gas flow channel (13) is 280 ~ 320mm.
10. ladle heat insulation apparatus for baking according to claim 4, it is characterized in that: the spacing in described flue gas slit (14) is 90 ~ 110mm, the spacing of described air gap (11) is 90 ~ 110mm; The spacing of described mezzanine space (12) is 285 ~ 315mm, and the height of described flue gas flow channel (13) is 280 ~ 320mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320098691 CN203109217U (en) | 2013-03-05 | 2013-03-05 | Heat preservation baking device for steel ladle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320098691 CN203109217U (en) | 2013-03-05 | 2013-03-05 | Heat preservation baking device for steel ladle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203109217U true CN203109217U (en) | 2013-08-07 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320098691 Expired - Fee Related CN203109217U (en) | 2013-03-05 | 2013-03-05 | Heat preservation baking device for steel ladle |
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| CN (1) | CN203109217U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103600057A (en) * | 2013-12-09 | 2014-02-26 | 中天钢铁集团有限公司 | Anti-blocking method for steel ladle air brick |
| CN107855509A (en) * | 2016-09-22 | 2018-03-30 | 宝山钢铁股份有限公司 | Temperature measurement on-line control device and method in ladle baking |
| CN114231829A (en) * | 2021-12-10 | 2022-03-25 | 芜湖新兴铸管有限责任公司 | Environment-friendly energy-saving spheroidizing ladle cover device |
-
2013
- 2013-03-05 CN CN 201320098691 patent/CN203109217U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103600057A (en) * | 2013-12-09 | 2014-02-26 | 中天钢铁集团有限公司 | Anti-blocking method for steel ladle air brick |
| CN107855509A (en) * | 2016-09-22 | 2018-03-30 | 宝山钢铁股份有限公司 | Temperature measurement on-line control device and method in ladle baking |
| CN114231829A (en) * | 2021-12-10 | 2022-03-25 | 芜湖新兴铸管有限责任公司 | Environment-friendly energy-saving spheroidizing ladle cover device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20170717 Address after: 430083, Hubei Wuhan Qingshan District Factory No. 2 Gate joint stock company organs Patentee after: Wuhan iron and Steel Company Limited Address before: 430080 Wuchang, Hubei Friendship Road, No. A, block, floor 999, 15 Patentee before: Wuhan Iron & Steel (Group) Corp. |
|
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130807 Termination date: 20180305 |