CN85100449A - The coal-steam composite technique for blast of blast furnace ironmaking - Google Patents
The coal-steam composite technique for blast of blast furnace ironmaking Download PDFInfo
- Publication number
- CN85100449A CN85100449A CN198585100449A CN85100449A CN85100449A CN 85100449 A CN85100449 A CN 85100449A CN 198585100449 A CN198585100449 A CN 198585100449A CN 85100449 A CN85100449 A CN 85100449A CN 85100449 A CN85100449 A CN 85100449A
- Authority
- CN
- China
- Prior art keywords
- blast
- coal
- blast furnace
- furnace
- increases
- 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
Images
Classifications
-
- Y02E20/344—
Abstract
" coal-steam composite technique for blast " of blast furnace ironmaking is to add steam (or water) in the cold wind that is sent to blast furnace, be heated to more than 1100 ℃ through hotblast stove, sending into blast furnace, and coal dust sprays into blast furnace by the place, air port.
H in the hot blast
2O is at blast-furnace tuyere district: H
2O → H
2+ 1/2O
2
Coke in hot blast and the blast furnace and the coal dust that sprays into burn: O
2+ 2C → 2CO is at 1M
3Increase 10gH in the dry-air blast
2O approximately quite increases by 3% air quantity, can increase production 3%.
The wind-warm syndrome high humidity that heals can correspondingly improve CO in the coal gas and H
2Concentration increases, and the gas reduction ability increases, and the indirect reduction degree increases, and can improve output and reduce coke ratio.
At furnace top pressure＞1.03kg/cm
2, hot blast temperature＞1100 ℃, H in the wind
2O＞90g/M
3The time, can increase production 50-100%, increase injecting coal quantity 36kg/t iron.
Description
Present technique is in the cold-air duct that is sent to blast furnace, add steam (or water, utilize the heat of cold-air duct, make water vapor), be heated to more than 1100 ℃ (to existing hot-blast furnace equipment through hotblast stove, temperature heals height better) send into blast furnace, coal dust is sprayed in the blast furnace by the blast-furnace tuyere place.
Usually during pulverized coal injection in blast furnace, be to improve output and injecting coal quantity, and adopt oxygen enriched blast, need oxygen-enriching device and oxygen source.
Present technique is to adopt humidifying technology on the blast furnace of Coal powder spray, the H in the hot blast
2O is at blast-furnace tuyere district: H
2O → 1/2 O
2(in the hotblast stove of high wind-warm syndrome, when at 1200 ℃, H
2O partly decomposes), O
2Burn with coke in the blast furnace and the coal dust that sprays into: O
2+ 2C → 2CO.
At 1M
3In the dry-air blast, increase 10gH
2O approximately quite increases by 3% air quantity, can increase production 3%.H
2O → H
2+ 1/2 O
2Play the oxygen enrichment effect, increase the H in the blast furnace gas simultaneously
2Amount.
CO and H in the blast furnace gas
2Concentration increases, and the gas reduction ability increases, and the indirect reduction degree increases, and can improve output, reduces coke ratio.
At blast furnace top pressure＞1.03kg/cm
2, hot blast temperature＞1100 ℃, H in the wind
2O＞90g/M
3Situation under, can increase output 50-100%, increase injecting coal quantity 36kg/t iron, coke ratio reduces.
This technology also has: equipment, simple in structure, and easy and simple to handle, advantages such as less investment.
Claims (1)
- " the coal-steam composite technique for blast " of blast furnace ironmaking is characterized in that:1,, adds H in the cold-air duct of blast furnace blast 2O (steam state or liquid state).2, spray into coal dust at the blast-furnace tuyere place.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN198585100449A CN85100449A (en) | 1985-04-01 | 1985-04-01 | The coal-steam composite technique for blast of blast furnace ironmaking |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN198585100449A CN85100449A (en) | 1985-04-01 | 1985-04-01 | The coal-steam composite technique for blast of blast furnace ironmaking |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN85100449A true CN85100449A (en) | 1988-08-10 |
Family
ID=4791166
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN198585100449A Pending CN85100449A (en) | 1985-04-01 | 1985-04-01 | The coal-steam composite technique for blast of blast furnace ironmaking |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN85100449A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102010919A (en) * | 2010-12-24 | 2011-04-13 | 鞍山普贝达科技有限公司 | Process for blasting oxygen-enriched hot blast to blast furnace and device applied to same |
| CN102888475A (en) * | 2012-09-28 | 2013-01-23 | 中冶南方工程技术有限公司 | Full-oxygen humidifying and blasting device and technology for blast furnace |
| CN112176137A (en) * | 2020-11-03 | 2021-01-05 | 马鞍山钢铁股份有限公司 | Blast furnace iron-making technology and method using waste heat steam |
-
1985
- 1985-04-01 CN CN198585100449A patent/CN85100449A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102010919A (en) * | 2010-12-24 | 2011-04-13 | 鞍山普贝达科技有限公司 | Process for blasting oxygen-enriched hot blast to blast furnace and device applied to same |
| CN102010919B (en) * | 2010-12-24 | 2013-07-10 | 鞍山普贝达科技有限公司 | Process for blasting oxygen-enriched hot blast to blast furnace and device applied to same |
| CN102888475A (en) * | 2012-09-28 | 2013-01-23 | 中冶南方工程技术有限公司 | Full-oxygen humidifying and blasting device and technology for blast furnace |
| CN112176137A (en) * | 2020-11-03 | 2021-01-05 | 马鞍山钢铁股份有限公司 | Blast furnace iron-making technology and method using waste heat steam |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103122398B (en) | Smoke self-circulation preheating coal dust injection technology and device | |
| GB1446660A (en) | Process for reducing iron oxide to metallic sponge iron with liquid or solid fuels | |
| CA1138197A (en) | Process for calcining mineral raw materials in a uniflow regenerative shaft furnace | |
| CN85100449A (en) | The coal-steam composite technique for blast of blast furnace ironmaking | |
| CN203360479U (en) | Device for reducing burning temperature of pure-oxygen tuyere in smelting reduction ironmaking technology | |
| CN101871026A (en) | Method for injecting carbon dioxide into blast furnace | |
| CN102888475A (en) | Full-oxygen humidifying and blasting device and technology for blast furnace | |
| CN201209146Y (en) | Low nitrogen blast furnace blower | |
| CN107299176A (en) | A kind of system and method for shaft furnace production DRI | |
| CN109943678A (en) | A kind of direct-reduction technique using coal gas of converter production sponge iron | |
| CN102808056A (en) | Oxygen-enriched dry gas supply process for blast furnace iron-making | |
| CN207130292U (en) | A kind of system of shaft furnace production DRI | |
| CN202849472U (en) | Oxygen-enriched dry gas supply device | |
| US4316741A (en) | Blast furnace process employing exchange fuel gas | |
| CA1091574A (en) | Humidification and heating of gases | |
| CN102978308B (en) | Energy-saving oxygen-enriching method for blast furnace iron making | |
| CN113355473B (en) | Method and device for blowing waste flue gas of hot blast stove to smelting reduction furnace | |
| CN115595389B (en) | Blast furnace hydrogen and biomass particle coupling injection system and method | |
| CN212451467U (en) | Device for fluidizing, conveying and blowing pulverized coal by using flue gas | |
| GB965547A (en) | Improvements in or relating to a blast furnace or a low shaft furnace | |
| JPS5679188A (en) | Utilization of gaseous by-product and device therefor | |
| Buzoverya | Technical and Economic Possibilities of Blast Furnace Smelting | |
| US2729555A (en) | Method of operating blast furnaces | |
| JPS57183529A (en) | Power plant with gasification of coal | |
| ES8302785A1 (en) | Blast furnace injection of overheated reducing gases. |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| C06 | Publication | ||
| PB01 | Publication | ||
| RJ01 | Rejection of invention patent application after publication | ||
| C12 | Rejection of a patent application after its publication | ||
| RJ01 | Rejection of invention patent application after publication |