CN2910956Y - Coiled-pipe air-seal type active chimney of evaporated cooling flue of steelmaking converter - Google Patents
Coiled-pipe air-seal type active chimney of evaporated cooling flue of steelmaking converter Download PDFInfo
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- CN2910956Y CN2910956Y CNU2006200736904U CN200620073690U CN2910956Y CN 2910956 Y CN2910956 Y CN 2910956Y CN U2006200736904 U CNU2006200736904 U CN U2006200736904U CN 200620073690 U CN200620073690 U CN 200620073690U CN 2910956 Y CN2910956 Y CN 2910956Y
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Abstract
The utility model relates to a coil type atomseal movable chimney cover of the vaporizing cooling flue used in steelmaking converter, the utility model is used for recovering the residual heat when the converter is making steel. The utility model is characterized in that the heated pipe(21) of the movable chimney cover(14) is made into coil type, the outer margin of the movable chimney cover(14) is provided with several nozzles(23) along the circle uniform. The nozzle(23) is connected with the gross trachea(22) which is arranged at the periphery of the movable chimney cover(14) and showing ring-shaped. The utility model movable chimney cover changes the traditional pipe septal plate type structure form to coil type, and makes a low pressure forced cycle with a deaerator. The coil type movable chimney cover and the furnace mouth fixed segment flue are using nitrogen or steam seal therebetween, the nitrogen or the steam gets into the nozzle through the nitrogen main pipe or the steam main pipe, the high speed nitrogen or steam ejecting from the nozzle makes an air curtain to isolate the converter flue gas and the external air and prevent the flue gas from escaping effectively. So the utility model is suitable for the vaporizing cooling flue whose converter nominal capacity is more than 80 ton.
Description
Technical field:
The utility model relates to a kind of gasification cooling flue for steel-making converter, is specifically related to a kind of coil tube type sealing gland movable gas hood of gasification cooling flue for steel-making converter.Belong to the oxygen top blown converter steel making equipment technical field.
Background technology:
Linz-Donawitz process is nearest more than 50 years a kind of steel-smelting technologies that produce and grow up.It does not need outer heat supplied, is the carbon that utilizes in the molten iron self, closes with the technical pure oxidation, produces heat, for the needs of steel-making.Oxygen from the converter mouth top, is deep into the top suitable position of molten iron in the converter by the oxygen rifle, blows.In converting process, the oxide compound of iron and the carbide in the molten iron produce a large amount of carbon monoxide, emit a large amount of heats simultaneously.The gas of ejection is called furnace gas, and major ingredient is carbon monoxide (86～90%) and carbonic acid gas (about 10%).The temperature of furnace gas in stove is at 1400 ℃～1600 ℃.
Owing in steelmaking process, produce a large amount of coal gas of converter (carbon monoxide), generally all adopt gasification cooling flue and dust removal installation to produce steam and recovery coal gas, its technical process such as Fig. 1, converter gas borrows blower fan suction to enter gasification cooling flue, the recovery part fume afterheat, the flue gas that comes out from gasification cooling flue enters overflow Venturi meter dedusting cooling from top, the path transfer Venturi meter that enters the bottom after the elbow separator dehydration carries out smart dedusting, gas after dedusting is dewatered by elbow separator, purified gas, enters gas storage holder and stores by three-way switch valve by blower fan pressurization back.In total system, main device is made up of converter, gasification cooling flue and dust removal installation.Gasification cooling flue is a converter top cooling down high-temperature flue gas to 800 ℃～1000 ℃, produces steam, reaches the purpose of waste heat recovery.Be the reliable passage that reclaims coal gas simultaneously.Coal gas to 70 ℃～80 ℃ is further cooled off in mainly acting as by the method for water spray of dust removal installation, purifies coal gas simultaneously, stores coal gas.At the fire door place, flue-gas temperature is approximately 1400 ℃～1600 ℃, and temperature out is approximately 800 ℃～1000 ℃ after the flue cooling, and flue gas enters the overflow Venturi meter, and temperature is reduced to 70 ℃～80 ℃ rapidly in 1/50 second, removes the big particle in the flue dust simultaneously.Cooled smoke enters the path transfer Venturi meter after the elbow separator dehydration, the path transfer Venturi meter can be adjusted the aditus laryngis cross section according to the minute-pressure difference that flue fire door place records, thereby the control flue gas flow keeps within the specific limits.Flue gas cooling and smart dedusting once more in the path transfer Venturi meter simultaneously.Reclaim when requiring when gas quality meets, coal gas enters gas chamber by water seal reverse checkvalve and V-type water seal and stores.
The action principle of gasification cooling flue is: high-temperature flue gas is by gasification cooling flue, and because of the heating surface temperature is lower, high-temperature flue gas is passed to the heating surface cooling with the heat energy of self.Water in the heating surface tube because of having absorbed the evaporation of flue gas heat energy part, produces steam.Because water is constantly circulation in heating surface tube, has cooled off heating surface, and has made metal not overheated.Adopt gasification cooling flue, not only can reach the purpose of cooled flue gas, simultaneously again can production vapor recovery heat, for the production and the life use of factory.
Gasification cooling flue is made up of movable gas hood, mouth fixed section, interlude flue and flue latter end, and its structure as shown in Figure 2.Movable gas hood is generally pipe iris type structure above the fire door of converter.Movable gas hood needs the easy on and off lifting, to guarantee the petticoat pipe inner and outer air pressure about equally, both avoided escaping of flue gas to worsen the flushing and casting environment, and also do not sucked too much air and reduce the quality that reclaims coal gas, therefore each the stage movable gas hood in blowing can be adjusted to the gap that needs.Finishing blowing taps, when slagging tap, adding steel scrap, hot metal charging, petticoat pipe can rise, and does not hinder converter inclining.When needs were changed furnace lining, movable gas hood can be translated apart the body of heater top again.Movable gas hood generally has circulation loop of one's own.Movable gas hood top is mouth fixed section flue, adopts water seal to be connected between movable flue and the mouth fixed section usually, to reach the purpose of sealing.
Mouth fixed section, operating mode are abominable relatively.This section is generally pipe dividing plate form.Oxygen muzzle, charging opening are arranged on this section.The lower collecting box of mouth fixed section is generally heating surface, and periodic flame impingement lower collecting box makes the operating mode of lower collecting box more abominable.
Middle flue section is generally oblique straight section etc., comprises all flues of flue gas ascent stage.At present big portion is a pipe iris type structure.
The flue latter end is the flue gas downcomer.Mainly be for easy to connect with the rear portion dust removal installation.
The movable gas hood of above-mentioned gasification cooling flue mainly has the following disadvantages:
The heat pipe of movable gas hood outer rim adopts pipe iris type structure formation, and water-lute is adopted in the sealing between movable gas hood and the mouth fixed section flue.It can only be applicable to the gasification cooling flue of low capacity converter.If be used for the converter nominal capacity at the gasification cooling flue more than 80 tons, then converter gas escapes easily.
Summary of the invention:
The purpose of this utility model is to overcome above-mentioned deficiency, and a kind of coil tube type sealing gland movable gas hood that can effectively completely cut off the gasification cooling flue for steel-making converter of converter gas and outside air is provided.
The purpose of this utility model is achieved in that a kind of coil tube type sealing gland movable gas hood of gasification cooling flue for steel-making converter, it is characterized in that: the heat pipe of movable gas hood is coil tube type and arranges, the movable gas hood outer rim is evenly distributed with plurality of nozzles along circumference, nozzle is connected with gas main, and gas main is arranged in the movable gas hood periphery in the form of a ring.
Movable gas hood of the present utility model has been abandoned traditional pipe iris type structure formation, change coil tube type into, form the low force circulation with deoxygenator, nitrogen or steam seal are adopted in sealing between coil tube type movable gas hood and the mouth fixed section flue, nitrogen or steam feed nozzle by nitrogen or steam manifold, form air curtain from the high speed nitrogen or the steam of nozzle ejection, completely cut off converter gas and outside air, prevent that effectively flue gas from escaping.Therefore go for the converter nominal capacity at the gasification cooling flue more than 80 tons.
Description of drawings:
Fig. 1 is that gasification cooling flue and dust removal installation are produced steam and reclaimed the gas process schema.
Fig. 2 is a gasification cooling flue Facad structure synoptic diagram.
Fig. 3 is a coil tube type sealing gland movable gas hood Facad structure synoptic diagram of the present utility model.
Fig. 4 is the I enlarged view of Fig. 3.
Fig. 5 is the A-A cut-away view of Fig. 4.
Among the figure: steel-making converter 1, gasification cooling flue 2, overflow Venturi meter 3, elbow separator 4, path transfer Venturi meter 5, elbow separator 6, blower fan 7, by-pass valve 8, T-valve 9, chimney 10, water seal reverse checkvalve 11, V-type water seal 12, gas chamber 13, movable gas hood 14, mouth fixed section flue 15, the flexible coupling device 16 of sealing, interlude flue 17, latter end flue 18, charging opening 19, oxygen muzzle 20, heat pipe 21, gas main 22, nozzle 23.
Embodiment:
Referring to Fig. 3～5, the coil tube type sealing gland movable gas hood of the utility model gasification cooling flue for steel-making converter, the heat pipe 21 of its movable gas hood 14 is coil tube type and arranges, movable gas hood 14 outer rims are evenly distributed with plurality of nozzles 23 along circumference, nozzle 23 is connected with gas main 22, and gas main 22 is arranged in movable gas hood 14 peripheries in the form of a ring.
Claims (1)
1, a kind of coil tube type sealing gland movable gas hood of gasification cooling flue for steel-making converter, it is characterized in that: the heat pipe (21) of movable gas hood (14) is coil tube type and arranges, movable gas hood (14) outer rim is evenly distributed with plurality of nozzles (23) along circumference, nozzle (23) is connected with gas main (22), and gas main (22) is arranged in movable gas hood (14) periphery in the form of a ring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2006200736904U CN2910956Y (en) | 2006-06-12 | 2006-06-12 | Coiled-pipe air-seal type active chimney of evaporated cooling flue of steelmaking converter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2006200736904U CN2910956Y (en) | 2006-06-12 | 2006-06-12 | Coiled-pipe air-seal type active chimney of evaporated cooling flue of steelmaking converter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2910956Y true CN2910956Y (en) | 2007-06-13 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2006200736904U Expired - Lifetime CN2910956Y (en) | 2006-06-12 | 2006-06-12 | Coiled-pipe air-seal type active chimney of evaporated cooling flue of steelmaking converter |
Country Status (1)
| Country | Link |
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| CN (1) | CN2910956Y (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101205566B (en) * | 2007-12-05 | 2010-10-13 | 中冶京诚工程技术有限公司 | Movable hood mechanical seal for converter vapourization cooling system |
| CN101935736A (en) * | 2010-09-03 | 2011-01-05 | 攀钢集团钢铁钒钛股份有限公司 | Water-cooling movable smoke hood |
| CN102605136A (en) * | 2012-04-01 | 2012-07-25 | 通化市五一环保科技股份有限公司 | Soft sealing device for converter mouth and fume hood |
| CN104344726A (en) * | 2014-10-30 | 2015-02-11 | 攀枝花市仁通钒业有限公司 | Preheating system for raw materials of vanadium products |
| CN104357612A (en) * | 2014-11-13 | 2015-02-18 | 江苏永钢集团有限公司 | Furnace mouth flue utilizing gas partition layer to prevent slagging |
| CN109022671A (en) * | 2017-06-12 | 2018-12-18 | 上海宝冶集团有限公司 | The production method of moulding bed module and movable gas hood for movable gas hood production |
| CN114737009A (en) * | 2022-03-14 | 2022-07-12 | 河钢股份有限公司 | Method for controlling nitrogen content in converter gas |
-
2006
- 2006-06-12 CN CNU2006200736904U patent/CN2910956Y/en not_active Expired - Lifetime
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101205566B (en) * | 2007-12-05 | 2010-10-13 | 中冶京诚工程技术有限公司 | Movable hood mechanical seal for converter vapourization cooling system |
| CN101935736A (en) * | 2010-09-03 | 2011-01-05 | 攀钢集团钢铁钒钛股份有限公司 | Water-cooling movable smoke hood |
| CN101935736B (en) * | 2010-09-03 | 2012-08-29 | 攀钢集团钢铁钒钛股份有限公司 | Water-cooling movable smoke hood |
| CN102605136A (en) * | 2012-04-01 | 2012-07-25 | 通化市五一环保科技股份有限公司 | Soft sealing device for converter mouth and fume hood |
| CN104344726A (en) * | 2014-10-30 | 2015-02-11 | 攀枝花市仁通钒业有限公司 | Preheating system for raw materials of vanadium products |
| CN104357612A (en) * | 2014-11-13 | 2015-02-18 | 江苏永钢集团有限公司 | Furnace mouth flue utilizing gas partition layer to prevent slagging |
| CN109022671A (en) * | 2017-06-12 | 2018-12-18 | 上海宝冶集团有限公司 | The production method of moulding bed module and movable gas hood for movable gas hood production |
| CN114737009A (en) * | 2022-03-14 | 2022-07-12 | 河钢股份有限公司 | Method for controlling nitrogen content in converter gas |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20070613 |
|
| EXPY | Termination of patent right or utility model |