CN201406446Y - Movable gas hood for converter gas - Google Patents
Movable gas hood for converter gas Download PDFInfo
- Publication number
- CN201406446Y CN201406446Y CN2009201274094U CN200920127409U CN201406446Y CN 201406446 Y CN201406446 Y CN 201406446Y CN 2009201274094 U CN2009201274094 U CN 2009201274094U CN 200920127409 U CN200920127409 U CN 200920127409U CN 201406446 Y CN201406446 Y CN 201406446Y
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- CN
- China
- Prior art keywords
- gas
- converter
- movable
- hood
- blanket
- 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
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- Y02W30/54—
Abstract
The utility model relates to a movable gas hood for converter gas, which comprises a heat exchange pipe (5), and crucially, an air-curtain sealing device is additionally arranged at the lower part ofthe movable gas hood. During converter gas recovery period, through forming a sealing air curtain, the movable gas hood can prevent air from entering into a vaporization cooling duct and reach extremely low excess air coefficient inside the evaporation cooling duct, thereby being helpful to gas cooling and having the capability of recovering more residual heat; and both CO content in the gas and the total content are increased, and the difficulty in movable gas hood lifting, caused by movable gas hood deformation or slag adhering can be avoided at the same time.
Description
Technical field
The utility model belongs to smelting iron and steel equipment technology field, relates to the movable gas hood that converter steelmaking is used.
Background technology
When utilizing converter steelmaking, partly be provided with movable gas hood at converter evaporation cooling air flue.When falling molten iron or tapping, movable gas hood rises, and converter can be fascinated smoothly; During blowing, movable gas hood is fallen, reduced the amount that near the air of converter mouth is inhaled into gasification cooling flue, for condition has been created in the recovery of coal gas of converter.Because the residing Working environment of movable gas hood is very abominable, the temperature height, deform easily or dross, in order to guarantee carrying out smoothly of movable gas hood lifting cover action, the size of movable gas hood is greater than the size of converter body usually, promptly between movable gas hood and converter body, leave the gap, although therefore when blowing, carried out falling the cover operation, still can be with air in certain amount along with coal gas of converter sucks gasification cooling flue together, the total flux that causes coal gas of converter increases, and the segment converter gas-fired causes that the coal gas of converter temperature raises.The coal gas of converter total amount increases and the rising of temperature makes sensible heat of converter coal gas increase, and is that RECOVERY OF CONVERTER GAS creates conditions in order to cool off coal gas of converter, then requires the caloric receptivity of gasification cooling flue to increase, thereby must increase the heat interchanging area of gasification cooling flue.On the other hand, because segment converter coal gas is oxidized, reduced the content of CO in the coal gas of converter, the yield of coal gas of converter reduces.
Summary of the invention
The purpose of this utility model is to provide a kind of feasible low converter steelmaking movable gas hood of excess air ratio that enters the coal gas of gas vaporizing cooling flue.
The purpose of this utility model is achieved through the following technical solutions: a kind of coal gas of converter movable gas hood, comprise blanket gas pipeline and heat transfer tube, and it is characterized in that: the bottom at this movable gas hood also has additional the air curtain tightness system.
Described air curtain tightness system can comprise around the blanket gas pipeline of converter body one circle with towards the sealed-in nozzles of converter body; Described sealed-in nozzles is communicated with described blanket gas pipeline by the blanket gas arm that is arranged on the described blanket gas pipeline; Described blanket gas pipeline is communicated with high-pressure air source by blanket gas connection pipe.
For ease of forming hermetic seal at fire door, described blanket gas pipeline is arranged on the below of described heat transfer tube.
For further being convenient to form the air curtain sealing at fire door, described blanket gas arm is uniform on described blanket gas pipeline.
Bottom at movable gas hood can only be provided with a blanket gas pipeline.
For ease of being connected of blanket gas pipeline and high pressure gas, described blanket gas pipeline is communicated with the high pressure seal source of the gas by two blanket gas connection pipes that are 30 ° of angles.
The beneficial effects of the utility model are:
(1) during converter steelmaking is smelted, can between movable gas hood and converter body, form air curtain by spraying sealed gas, because the effect of sealing air curtain, blocked the air admission gasification cooling flue, in gasification cooling flue, reach extremely low excess air ratio, therefore the total flux of coal gas of converter reduces, with O
2The CO of reaction reduces, and the temperature of converter gas reduces, thereby the diameter and the length of dwindling converter gas vaporizing cooling flue reach the purpose that coal gas of converter is cooled to uniform temp, and reduces the cooling injection flow rate; If keep converter gas vaporizing cooling flue constant, then can reduce the temperature of coal gas of converter in the gasification cooling flue outlet, promptly increased the utilization ratio of converter gas sensible heat, more waste heat obtains reclaiming, and economic benefit increases; Because and O
2The CO amount of reaction reduces, and CO content and total amount all increase in the coal gas of converter of recovery.
(2) this movable gas hood only sprays sealed gas formation air curtain in the payback period of coal gas of converter, does not spray sealed gas in the half combustion phase of coal gas of converter, guarantees that enough oxygen sucks, and guarantees the safety of gasification cooling flue.
(3) adopt the converter steelmaking movable gas hood of being with air curtain, do not needing movable gas hood and converter body to carry out having realized under the prerequisite of mechanical contact the purpose of sealing, not directly contact between movable gas hood and the converter has been avoided because the movable gas hood lifting difficulty that movable gas hood distortion or dross cause.
Description of drawings
Fig. 1 is a fundamental diagram of the present utility model;
Fig. 2 is the structural representation of the utility model embodiment 1;
Fig. 3 is the partial enlarged drawing of Fig. 2;
Fig. 4 is the structural representation of air curtain tightness system among Fig. 2.
Embodiment
The utility model is described in further detail below in conjunction with concrete embodiment, but therefore the utility model is not limited among the following concrete mode.
Embodiment 1: as shown in Figure 1, Figure 2, Figure 3 and Figure 4, a kind of coal gas of converter movable gas hood, constitute by heat transfer tube 5 grades, bottom at this movable gas hood also has additional the air curtain tightness system, and this air curtain tightness system comprises around the blanket gas pipeline 8 of converter body 3 one circle with towards the sealed-in nozzles 6 of converter body; Described sealed-in nozzles 6 is communicated with described blanket gas pipeline 8 by the blanket gas arm 7 that is arranged on the described blanket gas pipeline 8; Described blanket gas pipeline 8 is communicated with high-pressure air source by blanket gas connection pipe 4; Described blanket gas pipeline 8 is arranged on the below of described heat transfer tube 5; Described blanket gas arm 7 is uniform on described blanket gas pipeline 8; In the bottom of movable gas hood a blanket gas pipeline 8 only is set; Described blanket gas pipeline 8 is communicated with the high pressure seal source of the gas by two blanket gas connection pipes that are 30 ° of angles 4.
In order to guarantee to introduce the oxygen of capacity in half combustion phase, guarantee the safety of gasification cooling flue, in the half combustion phase of blowing beginning and ending phase, sealed-in nozzles 6 is not worked, and does not form air curtain.
During work, the utility model is connected with the sealing source of the gas with control valve by conventional methods, and the action of control valve and the program of converter steelmaking are chain, can control air curtain according to need of work.
When the cover blowing falls in converter 3 steel-making, with nitrogen or steam as sealed gas, sealed gas is sent to the blanket gas arm 7 of converter steelmaking movable gas hood 1 bottom, blanket gas arm 7 is connected with sealed-in nozzles 6, sealed-in nozzles is towards converter body 3, when sealed-in nozzles 6 sprays sealed gas, between converter steelmaking movable gas hood 1 and body of heater 3, form sealing air curtain 2, blocked air and be drawn in the converter evaporation cooling air flue.
Claims (6)
1, a kind of coal gas of converter movable gas hood comprises heat transfer tube (5), it is characterized in that: the bottom at this movable gas hood also has additional the air curtain tightness system.
2, coal gas of converter movable gas hood as claimed in claim 1 is characterized in that: described air curtain tightness system comprises around the blanket gas pipeline (8) of converter body one circle with towards the sealed-in nozzles (6) of converter body; Described sealed-in nozzles (6) is communicated with described blanket gas pipeline (8) by the blanket gas arm (7) that is arranged on the described blanket gas pipeline (8); Described blanket gas pipeline (8) is communicated with high-pressure air source by blanket gas connection pipe (4).
3, coal gas of converter movable gas hood as claimed in claim 2 is characterized in that: described blanket gas pipeline (8) is arranged on the below of described heat transfer tube (5).
4, as claim 2 or 3 described coal gas of converter movable gas hoods, it is characterized in that: described blanket gas arm (7) is gone up uniform at described blanket gas pipeline (8).
5, coal gas of converter movable gas hood as claimed in claim 4 is characterized in that: in the bottom of movable gas hood a blanket gas pipeline (8) only is set.
6, coal gas of converter movable gas hood as claimed in claim 5 is characterized in that: described blanket gas pipeline (8) is communicated with the high pressure seal source of the gas by two blanket gas connection pipes (4) that are 30 ° of angles.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009201274094U CN201406446Y (en) | 2009-05-25 | 2009-05-25 | Movable gas hood for converter gas |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009201274094U CN201406446Y (en) | 2009-05-25 | 2009-05-25 | Movable gas hood for converter gas |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201406446Y true CN201406446Y (en) | 2010-02-17 |
Family
ID=41677378
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009201274094U Expired - Lifetime CN201406446Y (en) | 2009-05-25 | 2009-05-25 | Movable gas hood for converter gas |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201406446Y (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN104374195A (en) * | 2014-11-04 | 2015-02-25 | 中国恩菲工程技术有限公司 | Furnace hood for rotatable metallurgical furnace and rotatable metallurgical furnace provided with same |
| CN105256098A (en) * | 2015-11-17 | 2016-01-20 | 莱芜钢铁集团有限公司 | Method for replacing movable smoke hood of revolving furnace |
| CN106702080A (en) * | 2017-02-08 | 2017-05-24 | 中冶华天工程技术有限公司 | Vaporization cooling flue for electric converter |
| CN110331250A (en) * | 2019-07-17 | 2019-10-15 | 联峰钢铁（张家港）有限公司 | A kind of Converter Residual Heat Boiler movable gas hood |
| CN110331253A (en) * | 2019-08-14 | 2019-10-15 | 建龙北满特殊钢有限责任公司 | Water nitrogen cools down fire door |
| CN112410500A (en) * | 2020-11-18 | 2021-02-26 | 新疆昆玉钢铁有限公司 | Smoke and dust anti-overflow device, movable smoke cover and converter steelmaking equipment |
-
2009
- 2009-05-25 CN CN2009201274094U patent/CN201406446Y/en not_active Expired - Lifetime
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN104374195A (en) * | 2014-11-04 | 2015-02-25 | 中国恩菲工程技术有限公司 | Furnace hood for rotatable metallurgical furnace and rotatable metallurgical furnace provided with same |
| CN105256098A (en) * | 2015-11-17 | 2016-01-20 | 莱芜钢铁集团有限公司 | Method for replacing movable smoke hood of revolving furnace |
| CN106702080A (en) * | 2017-02-08 | 2017-05-24 | 中冶华天工程技术有限公司 | Vaporization cooling flue for electric converter |
| CN106702080B (en) * | 2017-02-08 | 2018-10-12 | 中冶华天工程技术有限公司 | A kind of electricity coverter pig gasification cooling flue |
| CN110331250A (en) * | 2019-07-17 | 2019-10-15 | 联峰钢铁（张家港）有限公司 | A kind of Converter Residual Heat Boiler movable gas hood |
| CN110331250B (en) * | 2019-07-17 | 2024-04-16 | 联峰钢铁（张家港）有限公司 | Movable smoke hood for converter waste heat boiler |
| CN110331253A (en) * | 2019-08-14 | 2019-10-15 | 建龙北满特殊钢有限责任公司 | Water nitrogen cools down fire door |
| CN110331253B (en) * | 2019-08-14 | 2021-09-07 | 建龙北满特殊钢有限责任公司 | Water nitrogen cooling furnace mouth |
| CN112410500A (en) * | 2020-11-18 | 2021-02-26 | 新疆昆玉钢铁有限公司 | Smoke and dust anti-overflow device, movable smoke cover and converter steelmaking equipment |
| CN112410500B (en) * | 2020-11-18 | 2021-08-20 | 新疆昆玉钢铁有限公司 | Smoke and dust anti-overflow device, movable smoke cover and converter steelmaking equipment |
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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: 20100217 |
|
| CX01 | Expiry of patent term |