CN201416008Y - Pulverized coal injector used for injecting pulverized coal into blast furnace - Google Patents
Pulverized coal injector used for injecting pulverized coal into blast furnace Download PDFInfo
- Publication number
- CN201416008Y CN201416008Y CN2009200137865U CN200920013786U CN201416008Y CN 201416008 Y CN201416008 Y CN 201416008Y CN 2009200137865 U CN2009200137865 U CN 2009200137865U CN 200920013786 U CN200920013786 U CN 200920013786U CN 201416008 Y CN201416008 Y CN 201416008Y
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- pulverized coal
- injecting
- pipe
- blast furnace
- flange
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Abstract
The utility model discloses a pulverized coal injector used for injecting pulverized coal into a blast furnace. Pulverized coal can be injected into the blast furnace high-efficiently, flexibly and stably by utilizing the injector. The pulverized coal injector used for injecting pulverized coal into a blast furnace structurally comprises an injecting pipe, an injecting nozzle, a hard seal ball valve and a check valve, and is characterized in that the tail end of the pulverized coal injector is equipped with an air evacuation valve, the inner wall of a connecting pipe connected with the hard seal ball valve is equipped with a large taper hole, a sleeve is sleeved outside the injecting pipe, one end of the sleeve is connected with the check valve while the other end is locked through a sealing nut, the sleeve is equipped with a positioning bolt for positioning the injecting pipe, the front end of the check valve is connected with the flange, the flange is in bolt connection with the flange fixed on an air opening of the blast furnace, and the front end of the injecting pipe is welded with the injecting nozzle. The pulverized coal injection is low in resistance of an inner chamber thereof, large in injecting pressure and fine in stability, and is particularly suitable for large-sized blast furnaces to inject pulverized coal. Further, the position of the injecting nozzle can be adjusted.
Description
Technical field
The utility model relates to the specific equipment of iron-smelting blast furnace coal powder injection, especially a kind of pulverized coal injection coal dust injector.
Background technology
Spraying coal dust to iron-smelting blast furnace is the new technology that development in recent years is got up, and can save a large amount of coke, improves the technico-economical comparison of iron manufacturing process.Coal dust is ejected in the blast furnace burner hearth by pipeline and jet apparatus in the coal powder injection process, and this jet apparatus is extremely important, and the characteristics that should possess are: have flow regulating function, have spraying pressure, the jet pipe front end is high temperature resistant, nozzle wall is wear-resisting.Pulverized coal injection is widely used at present is the coal spouting gun of using steel pipe manufacturing, though this coal spouting gun possesses These characteristics, operating practice shows to also have a lot of problems at spraying pressure, flexibility of operation, work-ing life, secure context.There is the people that the coal dust rifle is improved in recent years, such as there being patent to propose with rifle head part inner lining of steel pipe ceramic layer; Rifle head front end is angular bend on a large scale; The body of a gun, rifle head vary in diameter.These measures are improved a lot coal dust rifle high high-temp stability and jetting pressure.But the handling and job stability of coal dust rifle also needs further reinforcement.
The utility model content
The utility model provides a kind of pulverized coal injection coal dust injector, utilize this injector efficient, flexible, stable in blast furnace, spray coal dust.
The pulverized coal injection that the utility model provides comprises jet pipe, shower nozzle, hard seal ball valve, vacuum breaker with its structure of coal dust injector, the tail end that it is characterized in that this coal dust injector is provided with a purging valve, the pipe connecting inwall that connects hard seal ball valve is left a big taper hole, at one section sleeve pipe of the outside of jet pipe cover, sleeve pipe one end connects vacuum breaker, the other end is locked by sealing nut, the tack bolt of location jet pipe is set on the sleeve pipe, vacuum breaker front end joint flange, flange is connected with flange bolt on being fixed on blast-furnace tuyere, jet pipe front end welding shower nozzle.Angle [alpha] of the relative crooked jet of shower nozzle is a benchmark with the coal dust injector centerline, and crooked angle [alpha] is 7～9 degree, high temperature resistant, the attrition resistant ceramic layer of wall liner in the shower nozzle.
The utility model is compared with existing pulverized coal injection equipment, and its beneficial effect is mainly reflected in several aspects:
1. by purging valve being set, the residual gas in the blowing-out process can be emitted, and pipeline running condition can be checked at coal dust injector tail end.
2. the pipe connecting inwall of hard seal ball valve is left a big taper hole, can reduce the logical out of date resistance of coal dust, increases the spraying pressure of shower nozzle.
3. tack bolt control jet pipe and crooked shower nozzle can be adjusted the position between shower nozzle and the air port at any time, make it reach best jeting effect.By the control of tack bolt, improved the stability of jet pipe in addition.
4. employing hard seal ball valve, can be under 400 ℃ of high temperature works better.
Description of drawings
Fig. 1 is a pulverized coal injection coal dust emitter construction synoptic diagram; Fig. 2 is the big taper hole enlarged view that the pipe connecting inwall of hard seal ball valve is left; Fig. 3 is that the interior wall liner of shower nozzle is high temperature resistant, the enlarged view of attrition resistant ceramic layer.
Embodiment
As shown in Figure 1, the pulverized coal injection that the utility model provides is made of following parts with the coal dust injector: purging valve 1, DN25 hard seal ball valve 2, jet pipe 3, sealing nut 4, sleeve pipe 5, tack bolt 6, vacuum breaker 7, flange 8, shower nozzle 9, purging valve 1 is arranged on the tail end of coal dust injector.As shown in Figure 2, the pipe connecting inwall of hard seal ball valve is left a big taper hole 10 among Fig. 1 amplifier section II, at one section sleeve pipe 5 of the outside of jet pipe 3 cover, sleeve pipe one end connects vacuum breaker 7, the other end is by sealing nut 4 lockings, and sleeve pipe is provided with the tack bolt 6 of location jet pipe 3, vacuum breaker 7 front end joint flanges 8 outward, flange 8 is connected with flange bolt on being fixed on blast-furnace tuyere, jet pipe 3 front ends welding shower nozzle 9.The relative jet pipe 3 crooked angle [alpha] of shower nozzle 9 are that the angle [alpha] of benchmark bending is 7～9 degree with the medullary ray.As shown in Figure 3, interior high temperature resistant, the attrition resistant ceramic layer 11 of wall liner of shower nozzle among Fig. 1 amplifier section I.
Claims (1)
1. pulverized coal injection coal dust injector, its structure comprises jet pipe, shower nozzle, hard seal ball valve, vacuum breaker, the tail end that it is characterized in that this coal dust injector is provided with a purging valve, the pipe connecting inwall that connects hard seal ball valve is left a big taper hole, at one section sleeve pipe of the outside of jet pipe cover, sleeve pipe one end connects vacuum breaker, the other end is locked by sealing nut, the tack bolt of location jet pipe is set on the sleeve pipe, vacuum breaker front end joint flange, flange is connected with flange bolt on being fixed on blast-furnace tuyere, jet pipe welding shower nozzle foremost, angle [alpha] of the relative crooked jet of shower nozzle is a benchmark with the coal dust injector centerline, crooked angle [alpha] is 7～9 degree, and wall liner is high temperature resistant in the shower nozzle, attrition resistant ceramic layer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009200137865U CN201416008Y (en) | 2009-05-19 | 2009-05-19 | Pulverized coal injector used for injecting pulverized coal into blast furnace |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009200137865U CN201416008Y (en) | 2009-05-19 | 2009-05-19 | Pulverized coal injector used for injecting pulverized coal into blast furnace |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201416008Y true CN201416008Y (en) | 2010-03-03 |
Family
ID=41792424
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009200137865U Expired - Fee Related CN201416008Y (en) | 2009-05-19 | 2009-05-19 | Pulverized coal injector used for injecting pulverized coal into blast furnace |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201416008Y (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102051423A (en) * | 2010-12-30 | 2011-05-11 | 本钢板材股份有限公司 | Device for injecting coal powder into blast furnace |
| CN103374639A (en) * | 2012-04-13 | 2013-10-30 | 张昭贵 | Nozzle for pulverized coal |
| CN112342328A (en) * | 2020-10-20 | 2021-02-09 | 本钢板材股份有限公司 | Blast furnace reinforced wear-resistant coal gun |
| WO2021217707A1 (en) * | 2020-04-30 | 2021-11-04 | 南京韬恒工业科技有限公司 | Pulverized coal injection device |
-
2009
- 2009-05-19 CN CN2009200137865U patent/CN201416008Y/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102051423A (en) * | 2010-12-30 | 2011-05-11 | 本钢板材股份有限公司 | Device for injecting coal powder into blast furnace |
| CN103374639A (en) * | 2012-04-13 | 2013-10-30 | 张昭贵 | Nozzle for pulverized coal |
| WO2021217707A1 (en) * | 2020-04-30 | 2021-11-04 | 南京韬恒工业科技有限公司 | Pulverized coal injection device |
| CN112342328A (en) * | 2020-10-20 | 2021-02-09 | 本钢板材股份有限公司 | Blast furnace reinforced wear-resistant coal gun |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20100303 Termination date: 20130519 |