CN1524967A - Coal injection device for blast furnace ironmaking - Google Patents
Coal injection device for blast furnace ironmaking Download PDFInfo
- Publication number
- CN1524967A CN1524967A CNA031155200A CN03115520A CN1524967A CN 1524967 A CN1524967 A CN 1524967A CN A031155200 A CNA031155200 A CN A031155200A CN 03115520 A CN03115520 A CN 03115520A CN 1524967 A CN1524967 A CN 1524967A
- Authority
- CN
- China
- Prior art keywords
- cooling water
- spray gun
- ball valve
- blast furnace
- coal
- 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.)
- Pending
Links
- 239000003245 coal Substances 0.000 title claims abstract description 37
- 238000002347 injection Methods 0.000 title claims description 14
- 239000007924 injection Substances 0.000 title claims description 14
- 239000007921 spray Substances 0.000 claims abstract description 43
- 239000000498 cooling water Substances 0.000 claims abstract description 28
- 241001247821 Ziziphus Species 0.000 claims abstract description 16
- 239000000843 powder Substances 0.000 claims abstract description 9
- 238000007664 blowing Methods 0.000 abstract description 7
- 238000000034 method Methods 0.000 abstract description 6
- 238000003723 Smelting Methods 0.000 abstract description 5
- 239000007789 gas Substances 0.000 description 10
- 238000005516 engineering process Methods 0.000 description 9
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 6
- 238000001816 cooling Methods 0.000 description 4
- 229910052742 iron Inorganic materials 0.000 description 3
- 238000002844 melting Methods 0.000 description 3
- 230000008018 melting Effects 0.000 description 3
- 238000005507 spraying Methods 0.000 description 3
- 239000002817 coal dust Substances 0.000 description 2
- 239000003034 coal gas Substances 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000002893 slag Substances 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000012159 carrier gas Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000035699 permeability Effects 0.000 description 1
Landscapes
- Blast Furnaces (AREA)
Abstract
The invention relates to a blast furnace iron-smelting auxiliary device, in particular a coal spray apparatus for the two-stage type coal spray process for blast furnace iron-smelting, wherein the apparatus comprises a coal chute, a jujube shape ball valve, a spray gun, a check valve, a ball valve, a pressing annular tube, a pressure gas air inlet pipe, wherein the jujube shape ball valve is connected with the pressure gas air inlet pipe, a through-hole is arranged in the center of the spray gun cooling water jacket, a cooling water chamber is arranged on the side wall, the top end is provided with a cooling-water intake port, the cooling water outlet, the cooling-water chamber are connected with the cooling water intake port and the cooling water outlet, the head portion of the spray gun cooling water jacket is secured on the jacket of the blast furnace. The invention can meet the requirements of the two-stage blowing coal powder process and increase coal spray amount.
Description
One, technical field
The present invention relates to a kind of blast furnace ironmaking auxiliary facility, particularly a kind of coal powder injection device that is applied to blast furnace ironmaking two-part coal spraying process.
Two, background technology
Technology for smelting iron in blast furnace by two-segment blowing of powdered coal (publication number CN 00858A) is on existing blast furnace ironmaking coal injection of draught technology basis, second section pulverized coal gun hole is set in the segment of blast furnace melting with soft top, furnace bosh or restoration of lower stack, coal dust is a carrier with rare gas element or pressurized air, spray into blast furnace through pipeline, spray gun and second section injection hole, this technology need not subsidiary conditions can increase injecting coal quantity 30～50kg/t-P, be a kind of brand-new coal spraying process, but existing coal powder injection equipment can not be suitable for.
Three, summary of the invention
The technical issues that need to address of the present invention are: increase the injecting coal quantity of blast furnace, a kind of coal powder injection device of realizing the two-part coal powder injection is provided.Its technical scheme is: the present invention has designed a kind of blast furnace ironmaking coal powder injection device that is applicable to technology for smelting iron in blast furnace by two-segment blowing of powdered coal, comprise convey coal pipe, jujube shape ball valve, spray gun, vacuum breaker, ball valve, clamp sleeve, the high pressure gas inlet pipe, it is characterized in that jujube shape ball valve connects the high pressure gas inlet pipe, spray gun watercooling jacket center has through hole, sidewall is offered cooling water cavity, head is offered cooling water intake, cooling water outlet, cooling water cavity and cooling water intake, cooling water outlet communicates, spray gun watercooling jacket head is fixed on the last furnace shell, afterbody stretches in the blast furnace chamber, jujube shape ball valve and spray gun watercooling jacket are tightly connected, leave through hole in the middle of the connecting portion, its diameter is greater than the spray gun external diameter, the spray gun front end docks with convey coal pipe by ball valve, tail end passes clamp sleeve, and jujube shape ball valve and spray gun watercooling jacket through hole stretch in the blast furnace chamber.
The invention has the beneficial effects as follows that the spray gun watercooling jacket has protection spray gun and the effect of cooling furnace lining, can guarantee to be provided with at restoration of lower stack the furnace lining cooling intensity at coal rifle place; The high pressure gas that the high pressure gas inlet pipe sprays into from the jujube shape ball valve are blown into furnace chamber by intermediate throughholes, can prevent that melting slag and solid charge from entering spray gun and watercooling jacket bonding, prevents from when having the plug spray gun simultaneously concurrently the function that coal gas escapes to guarantee safety in production; This appliance arrangement is made simple, practical, satisfies the requirement of blast furnace ironmaking two-stage type blowing breeze technology, guarantees the furnace lining cooling intensity simultaneously implementing second section coal-injection process, has guaranteed generation blast furnace campaign.
The present invention also is applicable to other coal spraying process beyond the two-stage type blowing breeze technology.
Four, description of drawings
Accompanying drawing is a structure diagram of the present invention
Among the figure: 1-vacuum breaker, 2-ball valve, 3-spray gun, the 4-clamp sleeve, 5-jujube shape ball valve, 6-rubber cradle, 7-spray gun watercooling jacket, 8-cooling water intake, 9-cooling water outlet, the 10-flange, 11-high pressure gas inlet pipe, 12-last furnace shell, the 13-blast furnace chamber, the 14-tee ball valve, 15-convey coal pipe, 16-Explosion-proof host.
Five, embodiment
With reference to accompanying drawing, a kind of blast furnace ironmaking coal powder injection device that is applicable to technology for smelting iron in blast furnace by two-segment blowing of powdered coal, by convey coal pipe 15, jujube shape ball valve 5, spray gun 3, vacuum breaker 1, ball valve 2, clamp sleeve 4, high pressure gas inlet pipe 11 parts such as grade are formed, jujube shape ball valve 5 connects high pressure gas inlet pipe 11, the center of spray gun watercooling jacket 7 has through hole, sidewall is offered cooling water cavity, head is offered cooling water intake 8, cooling water outlet 9, cooling water cavity and cooling water intake 8, cooling water outlet 9 communicates, spray gun watercooling jacket 7 heads are fixed on the last furnace shell 12, afterbody stretches in the blast furnace chamber 13, jujube shape ball valve 5 is tightly connected by flange 10 and rubber cradle 6 with spray gun cooling jacket 7, leave through hole in the middle of the connecting portion, its diameter is greater than the external diameter of spray gun 3, spray gun 3 front ends dock with convey coal pipe 15 by ball valve 2, be socketed with Explosion-proof host 16 on the convey coal pipe 15, convey coal pipe 15 the other ends are connected to tee ball valve 14, spray gun 3 tail ends pass clamp sleeve 4, and jujube shape ball valve 5 and spray gun watercooling jacket 7 through holes stretch in the blast furnace chamber 13.When implementing second section coal injection, coal dust and carrier gas together spray into blast furnace by spray gun 3, the high pressure gas that high pressure gas inlet pipe 11 sprays into from the jujube shape ball valve 5 are blown into blast furnace chamber 13 by intermediate throughholes, can prevent that melting slag and solid charge from entering spray gun 3 and spray gun watercooling jacket 7 bondings, prevent from when having the plug spray gun simultaneously concurrently the function that coal gas escapes to guarantee safety in production; The 1250m3 of Baogang Group Shanghai MeiShan Co., Ltd pulverized coal injection practice shows, adopts the present invention can effectively implement two-stage type blowing breeze technology, improves permeability of stock column, improves output about 10% or improve injecting coal quantity about 8%, receives good effect.
Claims (1)
1, a kind of blast furnace ironmaking coal powder injection device, comprise convey coal pipe, jujube shape ball valve, spray gun, vacuum breaker, ball valve, clamp sleeve, the high pressure gas inlet pipe, it is characterized in that jujube shape ball valve connects the high pressure gas inlet pipe, spray gun watercooling jacket center has through hole, sidewall is offered cooling water cavity, head is offered cooling water intake, cooling water outlet, cooling water cavity and cooling water intake, cooling water outlet communicates, spray gun watercooling jacket head is fixed on the last furnace shell, afterbody stretches in the blast furnace chamber, jujube shape ball valve and spray gun watercooling jacket are tightly connected, leave through hole in the middle of the connecting portion, its diameter is greater than the spray gun external diameter, and the spray gun front end docks with convey coal pipe by ball valve, tail end passes clamp sleeve, and jujube shape ball valve and spray gun watercooling jacket through hole stretch in the blast furnace chamber.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA031155200A CN1524967A (en) | 2003-02-26 | 2003-02-26 | Coal injection device for blast furnace ironmaking |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA031155200A CN1524967A (en) | 2003-02-26 | 2003-02-26 | Coal injection device for blast furnace ironmaking |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1524967A true CN1524967A (en) | 2004-09-01 |
Family
ID=34284322
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA031155200A Pending CN1524967A (en) | 2003-02-26 | 2003-02-26 | Coal injection device for blast furnace ironmaking |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1524967A (en) |
Cited By (3)
| 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 |
| CN102288038A (en) * | 2010-06-17 | 2011-12-21 | 上海宝钢设备检修有限公司 | Oxygen blowing air port of smelting reduction iron-making furnace |
| CN103924013A (en) * | 2013-01-11 | 2014-07-16 | 张昭贵 | Ball valve and online coal spraying gun replacement method thereof |
-
2003
- 2003-02-26 CN CNA031155200A patent/CN1524967A/en active Pending
Cited By (4)
| 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 |
| CN102288038A (en) * | 2010-06-17 | 2011-12-21 | 上海宝钢设备检修有限公司 | Oxygen blowing air port of smelting reduction iron-making furnace |
| CN102288038B (en) * | 2010-06-17 | 2013-06-19 | 上海宝钢设备检修有限公司 | Oxygen blowing air port of smelting reduction iron-making furnace |
| CN103924013A (en) * | 2013-01-11 | 2014-07-16 | 张昭贵 | Ball valve and online coal spraying gun replacement method thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |