CN2191864Y - Spray gun for jetting coal powder in blast furnace - Google Patents
Spray gun for jetting coal powder in blast furnace Download PDFInfo
- Publication number
- CN2191864Y CN2191864Y CN 94201862 CN94201862U CN2191864Y CN 2191864 Y CN2191864 Y CN 2191864Y CN 94201862 CN94201862 CN 94201862 CN 94201862 U CN94201862 U CN 94201862U CN 2191864 Y CN2191864 Y CN 2191864Y
- Authority
- CN
- China
- Prior art keywords
- coal powder
- spray gun
- blast furnace
- head
- utility
- 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 - Fee Related
Links
Abstract
The utility model discloses a coal powder spraying device which is suitable for jetting coal powder in blast furnace. The utility model is composed of a spray gun pipe, a gun head outer sleeve, a multihole gun head, and gun head cover. The utility model is characterized in that the head of the spray gun pipe is provided with the multihole gun head opened with a plurality of circular holes uniformly. When the utility model is in use, coal powder air current is divided into a plurality of fine coal powder streams through the multihole gun head. The fine coal powder streams are mixed with blast furnace hot blast well and rapidly to cause the coal powder to be burnt sufficiently, increasing the utilization of the coal powder and enhancing the jetting coal powder ability of the spray gun.
Description
The utility model belongs to jet apparatus, is specially adapted to pulverized coal injection in blast furnace.
The spray gun that general pulverized coal injection in blast furnace is used in the prior art is straight tubular, promptly make with a stainless steel tube, use this straight tubular spray gun when pulverized coal injection in blast furnace, near gun slot, be general dense " black clouds " from the coal dust of gun slot ejection, overwhelming majority coal dust burns bad near the air port, just take fire, gasify after entering blast furnace, make the pulverized coal injection amount be subjected to certain limitation, generally be no more than 100Kg/T.If the increase injecting coal quantity can make coal dust firing incomplete, therefore use this spray gun commonly used, both influenced blast-furnace smelting, also reduced the coal dust utilization ratio.
The purpose of this utility model provides a kind of improved pulverized coal injection in blast furnace spray gun, and it can make coal dust burn rapidly at blast-furnace tuyere.
The utility model pulverized coal injection in blast furnace is made up of lance tube, rifle head overcoat, porous applicator head, rifle skull with spray gun.
The utility model pulverized coal injection in blast furnace spray gun is installation in the following way: at the head of the lance tube rifle head overcoat of burn-oning, the porous applicator head is set in the rifle head overcoat, and be welded with a stainless steel rifle skull at rifle head overcoat front end, in order to fixing porous applicator head, promptly form the utility model pulverized coal injection in blast furnace spray gun.
The porous applicator head is made of special ceramic material, and because of the singularity of its material, this porous applicator head has good high temperature resistant, anti-oxidant, anti abrasive performance.
Have a plurality of circular holes on the porous applicator head, axially axial consistent with lance tube of circular hole, the quantity of circular hole and diameter are looked furnace volume size, iron injecting coal quantity per ton what are definite, and circular hole is evenly distributed on the rifle head.
Compared with prior art, advantage of the present utility model is:
1. improve the coal dust utilization ratio.
Adopt this improved spray gun, when pulverized coal injection in blast furnace, breeze airflow flows through through the porous applicator head, be divided into some strands of thin pulverized coal flow thighs, these thin pulverized coal flow thighs rapidly and blast-furnace hot-air reach good mixing, coal dust is heated rapidly, and coal dust is fully burned.
2. improve the coal injection ability.
Now the utility model is described in further detail in conjunction with the accompanying drawings:
Fig. 1 faces diagrammatic cross-section for the utility model pulverized coal injection in blast furnace with spray gun.
Fig. 2 for the utility model pulverized coal injection in blast furnace with spray gun longitudinal profile A-A section synoptic diagram among Fig. 1.
Among Fig. 1, Fig. 2,1 is lance tube, and 2 is rifle head overcoat, and 3 is the porous applicator head, and 4 is the rifle skull, and 5 is circular hole.
The utility model pulverized coal injection in blast furnace with spray gun when mounted, porous applicator head 3 is set in 2 li in rifle head overcoat, and weld a stainless steel rifle skull 4 at rifle head overcoat 2 front ends, in order to fixing porous applicator head 3, then rifle head overcoat 2 is welded on the front end of lance tube 1, promptly forms the utility model pulverized coal injection in blast furnace spray gun.
Working process of the present utility model is as follows: when adopting this spray gun work, breeze airflow flows to porous applicator head 3 by lance tube 1, passes through the circular hole 5 on the porous applicator head 3 again, is divided into some strands of thin pulverized coal flow thighs, sprays in the blast furnace.
Claims (2)
1, the spray gun used of a kind of pulverized coal injection in blast furnace, lance tube is straight tubular, it is characterized in that the lance tube front end is welded with a rifle head overcoat; Stud with a porous applicator head in the rifle head overcoat; Be welded with a stainless steel rifle skull at rifle head overcoat front end, in order to fixing porous applicator head; Have several circular holes equably above the described porous applicator head, circular hole axially and lance tube axial consistent.
2, spray gun according to claim 1 is characterized in that having on the described porous applicator head quantity of circular hole and diameter and determines according to what of furnace volume size and iron injecting coal quantity per ton.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 94201862 CN2191864Y (en) | 1994-01-26 | 1994-01-26 | Spray gun for jetting coal powder in blast furnace |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 94201862 CN2191864Y (en) | 1994-01-26 | 1994-01-26 | Spray gun for jetting coal powder in blast furnace |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2191864Y true CN2191864Y (en) | 1995-03-15 |
Family
ID=33821800
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 94201862 Expired - Fee Related CN2191864Y (en) | 1994-01-26 | 1994-01-26 | Spray gun for jetting coal powder in blast furnace |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2191864Y (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103131808A (en) * | 2011-11-23 | 2013-06-05 | 张昭贵 | Spray gun burner and loading and unloading method thereof |
| CN103131810A (en) * | 2011-11-29 | 2013-06-05 | 张昭贵 | Blast furnace oxygen enrichment coal powder injection device and method off-line assembly and disassembly thereof |
| CN103255253A (en) * | 2012-02-17 | 2013-08-21 | 张昭贵 | Side spraying type coal powder spraying gun |
| CN103374639A (en) * | 2012-04-13 | 2013-10-30 | 张昭贵 | Nozzle for pulverized coal |
| CN113574184A (en) * | 2019-03-27 | 2021-10-29 | 杰富意钢铁株式会社 | Method for raising temperature of furnace bottom and burner lance used in the method |
-
1994
- 1994-01-26 CN CN 94201862 patent/CN2191864Y/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103131808A (en) * | 2011-11-23 | 2013-06-05 | 张昭贵 | Spray gun burner and loading and unloading method thereof |
| CN103131810A (en) * | 2011-11-29 | 2013-06-05 | 张昭贵 | Blast furnace oxygen enrichment coal powder injection device and method off-line assembly and disassembly thereof |
| CN103255253A (en) * | 2012-02-17 | 2013-08-21 | 张昭贵 | Side spraying type coal powder spraying gun |
| CN103374639A (en) * | 2012-04-13 | 2013-10-30 | 张昭贵 | Nozzle for pulverized coal |
| CN113574184A (en) * | 2019-03-27 | 2021-10-29 | 杰富意钢铁株式会社 | Method for raising temperature of furnace bottom and burner lance used in the method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |