CN2910951Y - Expansion joint structure type evaporated cooling flue of steelmaking converter - Google Patents
Expansion joint structure type evaporated cooling flue of steelmaking converter Download PDFInfo
- Publication number
- CN2910951Y CN2910951Y CNU2006200736853U CN200620073685U CN2910951Y CN 2910951 Y CN2910951 Y CN 2910951Y CN U2006200736853 U CNU2006200736853 U CN U2006200736853U CN 200620073685 U CN200620073685 U CN 200620073685U CN 2910951 Y CN2910951 Y CN 2910951Y
- Authority
- CN
- China
- Prior art keywords
- flue
- converter
- gas
- mouth fixed
- expansion joint
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
Classifications
-
- Y02W30/54—
Landscapes
- Carbon Steel Or Casting Steel Manufacturing (AREA)
- Waste-Gas Treatment And Other Accessory Devices For Furnaces (AREA)
Abstract
The utility model relates to an expansion structure type vaporizing cooling flue used in steelmaking converter, the vaporizing cooling flue is used for recovering the residual heat when the converter is making steel. The vaporizing cooling flue includes a movable chimney cover(14), a furnace mouth fixed segment flue(15), an intermediate regime flue(17) and a terminal flue(18), the movable chimney cover(14) is disposed above the converter, the movable chimney cover(14), the furnace mouth fixed segment flue(15), the intermediate regime flue(17) and the terminal flue(18) are connected in turn, the vaporizing cooling flue is characterized in that the furnace mouth fixed segment flue(15) and the intermediate regime flue(17) is connected by an expansion joint(21) therebetween. The application of the expansion joint can absorb the expansion increment when the flue is runing the thermal expansion and cold shrinkage in one aspect, and eliminate the accumulated error when the flue is installed in another aspect.
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 expansion texture formula 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.
Above-mentioned gasification cooling flue mainly has the following disadvantages:
Because it is periodic bessemerizing, during steelmaking oxygen blowing, the high-temperature flue gas flue of flowing through, the flue expanded by heating, converter stops blowing when adding steel scrap or tapping, the flue cooling is shunk, and this point reflection is still not obvious in the flue diametric(al), and bigger at flue length direction stroke, therefore must on flue structure, take in.
Summary of the invention:
The purpose of this utility model is to overcome above-mentioned deficiency, and a kind of expansion texture formula gasification cooling flue for steel-making converter that can stretch at the flue length direction is provided.
The purpose of this utility model is achieved in that a kind of expansion texture formula gasification cooling flue for steel-making converter, comprise: movable gas hood, mouth fixed section flue, interlude flue and latter end flue, movable gas hood places the converter top, movable gas hood, mouth fixed section flue, interlude flue and latter end flue are linked in sequence successively, it is characterized in that: adopt expansion joint to be connected between described mouth fixed section flue and the interlude flue.Adopting expansion joint to connect on the one hand can absorb its stroke in the flue operation when expanding with heat and contract with cold, realize flexibly connecting, and also can eliminate the progressive error when installing on the other hand when flue is installed.
Description of drawings:
Fig. 1 produces steam and reclaims the gas process schema for adopting gasification cooling flue and dust removal installation.
Fig. 2 is a gasification cooling flue Facad structure synoptic diagram.
Fig. 3 is mouth fixed section flue of the present utility model and interlude flue syndeton synoptic diagram.
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, expansion joint 21, refractory materials 22.
Embodiment:
Referring to Fig. 3, the utility model expansion texture formula gasification cooling flue for steel-making converter, by movable gas hood 14, mouth fixed section flue 15, interlude flue 17 and latter end flue 18, movable gas hood 14 places the converter top, and movable gas hood 14, mouth fixed section flue 15, interlude flue 17 and latter end flue 18 are linked in sequence successively.Adopt expansion joint 21 to be connected between mouth fixed section flue 15 and the interlude flue 17.
Claims (1)
1, a kind of expansion texture formula gasification cooling flue for steel-making converter, comprise: movable gas hood (14), mouth fixed section flue (15), interlude flue (17) and latter end flue (18), movable gas hood (14) places the converter top, movable gas hood (14), mouth fixed section flue (15), interlude flue (17) and latter end flue (18) are linked in sequence successively, it is characterized in that: adopt expansion joint (21) to be connected between described mouth fixed section flue (15) and the interlude flue (17).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2006200736853U CN2910951Y (en) | 2006-06-12 | 2006-06-12 | Expansion joint structure type evaporated cooling flue of steelmaking converter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2006200736853U CN2910951Y (en) | 2006-06-12 | 2006-06-12 | Expansion joint structure type evaporated cooling flue of steelmaking converter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2910951Y true CN2910951Y (en) | 2007-06-13 |
Family
ID=38132810
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2006200736853U Expired - Lifetime CN2910951Y (en) | 2006-06-12 | 2006-06-12 | Expansion joint structure type evaporated cooling flue of steelmaking converter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2910951Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104561438A (en) * | 2015-01-29 | 2015-04-29 | 江苏永钢集团有限公司 | Evaporative cooling flue of converter |
| CN112004946A (en) * | 2018-07-25 | 2020-11-27 | 日本制铁株式会社 | Converter exhaust gas treatment device |
| CN112680560A (en) * | 2020-12-08 | 2021-04-20 | 苏州海陆重工股份有限公司 | Waste heat boiler in converter dry dedusting system |
-
2006
- 2006-06-12 CN CNU2006200736853U patent/CN2910951Y/en not_active Expired - Lifetime
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104561438A (en) * | 2015-01-29 | 2015-04-29 | 江苏永钢集团有限公司 | Evaporative cooling flue of converter |
| CN104561438B (en) * | 2015-01-29 | 2016-04-20 | 江苏永钢集团有限公司 | Converter evaporation cooling air flue |
| CN112004946A (en) * | 2018-07-25 | 2020-11-27 | 日本制铁株式会社 | Converter exhaust gas treatment device |
| CN112680560A (en) * | 2020-12-08 | 2021-04-20 | 苏州海陆重工股份有限公司 | Waste heat boiler in converter dry dedusting system |
| CN112680560B (en) * | 2020-12-08 | 2022-04-15 | 苏州海陆重工股份有限公司 | Waste heat boiler in converter dry dedusting system |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101539371B (en) | First flue gas dust removal and waste heat recovery system for electric stove | |
| CN2910956Y (en) | Coiled-pipe air-seal type active chimney of evaporated cooling flue of steelmaking converter | |
| CN201406446Y (en) | Movable gas hood for converter gas | |
| CN2910951Y (en) | Expansion joint structure type evaporated cooling flue of steelmaking converter | |
| CN2910952Y (en) | Forced circulation type evaporated cooling flue of steelmaking converter | |
| CN201737972U (en) | Fully developed flue gas waste heat recovery device for AOD converter | |
| CN108823352A (en) | A kind of converter gas dry type waste heat recycling dust-extraction unit and method | |
| CN101726175A (en) | Heat accumulating type external heat blast cupola furnace | |
| CN203451556U (en) | Pitch-varying flow guide structural heating pipe of evaporative cooling smoke channel for steel converter | |
| CN101539370B (en) | First flue gas dust-removal and waste heat recovery system for electric stove without water cooling flue gas path | |
| CN201125264Y (en) | Converting furnace top water jacket girder | |
| CN2910948Y (en) | Sheath-like, water circulation chimney at converter mouth of evaporated cooling flue of steelmaking converter | |
| CN104359326A (en) | System for efficiently recovering steel-making flue gas residual heat of electric-arc furnace | |
| CN2910955Y (en) | Lower header lifting type chimney fixed at converter mouth of evaporated cooling flue of steelmaking converter | |
| CN100404698C (en) | Gasification cooling flue for steel-making converter | |
| CN203625415U (en) | Evaporative cooling flue for steelmaking converter | |
| CN2910954Y (en) | Tube-packing type chimney fixed at converter mouth of evaporated cooling flue of steelmaking converter | |
| CN2910949Y (en) | Surface hot spraying type evaporated cooling flue of steelmaking converter | |
| CN1876851A (en) | Mouth fixed section flue of gasification cooling flue for steel-making converter | |
| CN2910950Y (en) | Small straight section unsymmetrical bending tube type evaporated cooling flue of steelmaking converter | |
| CN2910953Y (en) | Flow-guiding structure type chimney fixed at converter mouth of steelmaking converter evaporated cooling flue | |
| CN101892354B (en) | Full combustion smoke gas excess heat reclaiming system of argon oxygen decarburization converter | |
| CN209386313U (en) | Segmented water- to-water heat exchanger | |
| CN2910957Y (en) | Tangential water jetting type active chimney of evaporated cooling flue of steelmaking converter | |
| CN202993867U (en) | Recovery system of flue gas waste heat of ferro-nickel smelting furnace |
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 |