CN2068510U - Fine coal blowing unit of blast furnace - Google Patents
Fine coal blowing unit of blast furnace Download PDFInfo
- Publication number
- CN2068510U CN2068510U CN 90212210 CN90212210U CN2068510U CN 2068510 U CN2068510 U CN 2068510U CN 90212210 CN90212210 CN 90212210 CN 90212210 U CN90212210 U CN 90212210U CN 2068510 U CN2068510 U CN 2068510U
- Authority
- CN
- China
- Prior art keywords
- pipe
- coal powder
- powder injection
- coal
- peephole
- 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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- Blast Furnaces (AREA)
Abstract
The utility model discloses a coal powder blowing device of a blast furnace which is a coal powder blowing device for blast furnace iron smelting, comprising a coal feeding pipe, a cock, a coal-spraying pipe, a pressing nut, a thrust block, an insert, a plug seat, a ball valve, an outer sleeve pipe, an observation hole pressing plate, an observation hole cover, an observation hole pipe, an observation hole joint, an observation hole cover flange disk, a small curvature, a straight blowpipe, a tuyere small sleeve, and a precombustion chamber, wherein, one end of the coal-spraying pipe is arranged in the straight blowpipe which is arranged away from the tuyere small sleeve; the shaft lines of the coal-spraying pipe and the straight blowpipe are arranged in parallel; the other end of the coal-spraying pipe is connected with emptying small pipes; emptying cocks is arranged among the emptying small pipes; one end of the observation hole pipe is connected with a periscope. The utility model can be widely used in the rebuilding of the present blast furnaces.
Description
A kind of blast-furnace coal powder injection device that is used for blast furnace ironmaking belongs to technical field of blast furnace ironmaking.
The present blast furnace that uses, because coal powder injection pipe (7) is located at from the very near position of tuyere small sleeve, and the axis of this coal powder injection pipe becomes 30 ° of angles with the axis of belly pipe (22), so, coal dust does not pass through preheating and pre-burning spraying into cupola well, this causes that just unburnt phenomenon takes place excessive coal dust after spraying into cupola well, thereby cause the working of a furnace to be difficult to walk, in addition, said structure directly blows on the water wall of tuyere small sleeve coal dust, tuyere small sleeve has been caused wearing and tearing, thereby reduced the work-ing life of tuyere small sleeve.Defectives such as in a word, the said structure that adopts on the blast furnace has produced waste greatly, and power consumption is high, and injecting coal quantity is low, and the blast furnace feeding coke ratio is big.
At above-mentioned deficiency, goal of the invention of the present utility model is to propose a kind of injecting coal quantity height, the energy-saving type blast furnace coal powder blowing device that ratio of putting coke into furnace is little.
The utility model is by coal feeding pipe (1), import cock (2), coal powder injection pipe (7) hold-down nut (8), thrust block (9), insert son (10), socket (11), ball valve (12), outer tube (13), peephole pressing plate (14), peeping hole cover (15), peephole plate (16), glass (17), peephole joint (18), peephole pipe (19), peeping hole cover ring flange (20), little curved (21), belly pipe (22), tuyere small sleeve (23) is formed, wherein, one end of coal powder injection pipe (7) is inserted in the belly pipe (22) away from tuyere small sleeve (23), its axis is parallel with the axis of belly pipe (22), and be provided with settling chamber (27) in this end the place ahead, hold-down nut (8), thrust block (9), insert son (10), socket (11) ball valve (12) is enclosed within on the coal powder injection pipe (7).The utility model is provided with emptying tubule (4), drain cock (5), emptying tubule (6) emptying tubule (4) at the other end of coal powder injection pipe (7) and is connected by drain cock (5) with (6), emptying tubule (4) is connected with coal powder injection pipe (7) by threeway (3), is connected with the swab handle (24) of pipe and mirror composition at an end of peephole pipe (19).Because an end of coal powder injection pipe (7) is inserted in the belly pipe (22) away from tuyere small sleeve, so coal dust is passing through coal feeding pipe (1), import cock (2), behind the coal powder injection pipe (7), enter in the belly pipe (22) as the coal dust settling chamber, tuyere small sleeve (23) is preceding to be obtained preheating and local pre-burning is arranged entering to make the coal dust that sprays into tuyere small sleeve (23), the heat that coal dust pre-burning produces can improve wind-warm syndrome or can offset the reduction of the wind-warm syndrome that enters tuyere small sleeve (23) that the heat radiation owing to belly pipe (7) causes at least, to reach the injecting coal quantity height, ratio of putting coke into furnace is little, and low purpose consumes energy.
Compared with prior art, on blast furnace, adopt the utility model can improve the burn-off rate of coal dust, thereby energy consumption is reduced, improve injecting coal quantity, reach the injecting coal quantity of 180～220 kilograms of/ton iron, reduced ratio of putting coke into furnace, and in belly pipe, coking and undue wear can not take place, belly pipe can long-term safety be moved.Enter cupola well owing to be parallel to belly pipe (22) behind the coal dust process coal powder injection pipe (7), increased the penetrativity that coal dust enters cupola well, wearing and tearing have been reduced to tuyere small sleeve, thereby prolonged the work-ing life of tuyere small sleeve, reduced the damping down number of times, improved blast furnace throughput, the utility model also can make the operator away from blast furnace, thereby reduced workman's physical consumption, reduced labour intensity.
Fig. 1 is a structural representation of the present utility model.
Fig. 2 is the scheme of installation of the utility model coal powder injection pipe (7).
Fig. 3 is the scheme of installation of swab handle (24).
The utility model can be achieved like this: the coal feeding pipe that it adopts (1), import cock (2), hold-down nut (8), thrust block (9), insert son (10), socket (11), ball valve (12), outer tube (13), peephole pipe (16), glass (17), peephole joint (18), peephole pipe (19), little curved (21) belly pipe (22), tuyere small sleeve (23) can with present blast furnace on use identical.That uses on the peephole pressing plate (14), the physical dimension of peeping hole cover (15), peeping hole cover ring flange and present blast furnace is the same, processes two holes that are used to install outer tube (13) and peephole pipe (16) thereon.Coal powder injection pipe (7) adopts 1Cr18Ni9Ti to make the pipe of φ 32.Standardized component is adopted in threeway (3), and emptying tubule (4) and (6) adopt 1/2 " steel pipe, drain cock (5) employing 1/2 ".Hold-down nut (8), thrust block (9), insert son (10), socket (11), ball valve (12), outer tube (13) is enclosed within coal powder injection pipe (7) outside, peephole pressing plate (14), peeping hole cover (15) is enclosed within outer tube (13) outside, coal powder injection pipe (7) injects belly pipe (22) until the place that is connected with belly pipe (22) flange near little curved (21) away from tuyere small sleeve (23) through too small curved (21), and make coal powder injection pipe (7) parallel with the axis of belly pipe (22), the chamber promptly can be settling chamber within the belly pipe, coal powder injection pipe (7) is connected with coal feeding pipe (1) by import cock (2), emptying tubule (4) is connected with emptying tubule (6) by drain cock (5), be connected with coal powder injection pipe (7) by threeway (3), mirror in the swab handle (24) adopts two dull and stereotyped reflective mirrors, install by shown in the figure (3), be connected with peephole pipe (19) with screw (26) by set collar (25), all the other install with the blast furnace of use now similar.
Claims (4)
1, a kind of blast-furnace coal powder injection device that is used for blast furnace ironmaking, by coal feeding pipe (1), import cock (2), coal powder injection pipe (7), hold-down nut (8), thrust block (9), insert son (10), socket (11), ball valve (12), outer tube (13), peephole pressing plate (14), peeping hole cover (15), peephole pipe (16), glass (17), peephole joint (18), peephole pipe (19), peeping hole cover ring flange (20), little curved (21), belly pipe (22), tuyere small sleeve (23) is formed, wherein, coal powder injection pipe (7) one ends extend the place that is connected with tuyere small sleeve (23) in the belly pipe (22), its axis becomes 30 ° of angles with belly pipe (22) for axis, an end that it is characterized in that the coal powder injection pipe (7) in the utility model is located in the belly pipe (22) away from tuyere small sleeve (23), and be provided with settling chamber (27) in this end the place ahead, hold-down nut (8), thrust block (9), insert son (10), socket (11), ball valve (12) is enclosed within on the coal powder injection pipe (7).
2, blast-furnace coal powder injection device according to claim 1 is characterized in that the position that the optimal setting positions of coal powder injection pipe (7) parallels with the axis of belly pipe (22) for its axis.
3, blast-furnace coal powder injection device according to claim 1, it is characterized in that being provided with emptying tubule (4), drain cock (5), emptying tubule (6) at the other end of coal powder injection pipe (7), emptying tubule (4) is connected by drain cock (5) with emptying tubule (6), and emptying tubule (4) is connected with coal powder injection pipe (7) by threeway (3).
4, blast-furnace coal powder injection device according to claim 1 is characterized in that an end of peephole pipe (19) is provided with the swab handle of being made up of pipe and mirror (24).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 90212210 CN2068510U (en) | 1990-05-07 | 1990-05-07 | Fine coal blowing unit of blast furnace |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 90212210 CN2068510U (en) | 1990-05-07 | 1990-05-07 | Fine coal blowing unit of blast furnace |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2068510U true CN2068510U (en) | 1991-01-02 |
Family
ID=4891791
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 90212210 Expired - Lifetime CN2068510U (en) | 1990-05-07 | 1990-05-07 | Fine coal blowing unit of blast furnace |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2068510U (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101948940A (en) * | 2010-09-03 | 2011-01-19 | 南通海鹰机电集团有限公司 | Efficient, safe and environment-friendly blasting device |
| CN102042763A (en) * | 2010-12-01 | 2011-05-04 | 张昭贵 | Sleeve coal spraying gun with viewing function |
| CN101270873B (en) * | 2007-03-23 | 2011-06-15 | 宝山钢铁股份有限公司 | Method and device for blowing breeze to pure oxygen smelting mobile filling bed smelting furnace |
| CN102485914A (en) * | 2010-12-01 | 2012-06-06 | 张昭贵 | Peep hole coal injection device for blast furnace |
| CN102559973A (en) * | 2010-12-21 | 2012-07-11 | 张昭贵 | Blast furnace air supply device and pulverized coal injection and pulverized coal injection combustion method |
| CN103672866A (en) * | 2013-11-25 | 2014-03-26 | 中国科学院过程工程研究所 | Device and method for preheating combustion of jetting pulverized coal used in iron-making process |
-
1990
- 1990-05-07 CN CN 90212210 patent/CN2068510U/en not_active Expired - Lifetime
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101270873B (en) * | 2007-03-23 | 2011-06-15 | 宝山钢铁股份有限公司 | Method and device for blowing breeze to pure oxygen smelting mobile filling bed smelting furnace |
| CN101948940A (en) * | 2010-09-03 | 2011-01-19 | 南通海鹰机电集团有限公司 | Efficient, safe and environment-friendly blasting device |
| CN102042763A (en) * | 2010-12-01 | 2011-05-04 | 张昭贵 | Sleeve coal spraying gun with viewing function |
| CN102485914A (en) * | 2010-12-01 | 2012-06-06 | 张昭贵 | Peep hole coal injection device for blast furnace |
| CN102559973A (en) * | 2010-12-21 | 2012-07-11 | 张昭贵 | Blast furnace air supply device and pulverized coal injection and pulverized coal injection combustion method |
| CN103672866A (en) * | 2013-11-25 | 2014-03-26 | 中国科学院过程工程研究所 | Device and method for preheating combustion of jetting pulverized coal used in iron-making process |
| CN103672866B (en) * | 2013-11-25 | 2016-04-06 | 中国科学院过程工程研究所 | A kind of iron-smelting process coal injection furnace preheat burner and method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CX01 | Expiry of patent term |