SU598938A1 - Tuyere for deep blowing of metal - Google Patents
Tuyere for deep blowing of metalInfo
- Publication number
- SU598938A1 SU598938A1 SU741986525A SU1986525A SU598938A1 SU 598938 A1 SU598938 A1 SU 598938A1 SU 741986525 A SU741986525 A SU 741986525A SU 1986525 A SU1986525 A SU 1986525A SU 598938 A1 SU598938 A1 SU 598938A1
- Authority
- SU
- USSR - Soviet Union
- Prior art keywords
- tuyere
- metal
- oxygen
- blowing
- nozzle
- Prior art date
Links
- 238000007664 blowing Methods 0.000 title description 3
- 239000002184 metal Substances 0.000 title 1
- 239000001301 oxygen Substances 0.000 description 7
- 229910052760 oxygen Inorganic materials 0.000 description 7
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 5
- 239000007789 gas Substances 0.000 description 4
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 4
- 238000006243 chemical reaction Methods 0.000 description 3
- 238000010926 purge Methods 0.000 description 3
- 229910001338 liquidmetal Inorganic materials 0.000 description 2
- 239000003345 natural gas Substances 0.000 description 2
- 239000007800 oxidant agent Substances 0.000 description 2
- 239000003153 chemical reaction reagent Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 238000000354 decomposition reaction Methods 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 239000000155 melt Substances 0.000 description 1
- 238000005272 metallurgy Methods 0.000 description 1
- 230000001590 oxidative effect Effects 0.000 description 1
- 238000007670 refining Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
- Y02P10/10—Reduction of greenhouse gas [GHG] emissions
- Y02P10/143—Reduction of greenhouse gas [GHG] emissions of methane [CH4]
Landscapes
- Manufacture And Refinement Of Metals (AREA)
- Carbon Steel Or Casting Steel Manufacturing (AREA)
Description
Изобретение относитс к области металлургии, в частности к устройствам дл продувки жидкого металла, и может использоватьс при рафи1Шровании жидкого металла. Известна фурма дл газокислородной продувки ванны, состо ща из двух концентрично располо оеииых труб. Фурма охлаждаетс водой или жидким окислителем 1. Наиболее близкой по тех1шческой сущности и достигаемому результату к предлагаемому изобретению вл етс фурма, содержаща водоохлаждаемый корпус и сопла дл подачи кислорода и газа 2J -Совместна подача таза-окислител и охлаждающего реагента в реакционную зону уменьшает кислородный потещщал среды, что способствует, в свою очередь, уменьше1шю пылевьщеленн при продувке в зоне реакщш. Недостатком известной конструкции вл етс невозможность ведени продувки на достаточной глубине расплава. Цель Изобретени - повышение эффективности продувки и стойкости фурмы. Это достигаетс тем, чго каждое сопло фурмы вьшолнено выступающим в виде двух ко1П1рнтрнчно расположенных труб, образующих централыаш -дл нодачи кислорода и перифертйный - дл подачи газа каналы, причем длина выступающей части сопла равна 100-400 диаметрам кнслородиого канала , а атнощение величины зазора между трубами к длине сопла равно 0,0005-0,0020. На чертеже,изображена предлагаеко фурма, продольный разрез. Фурма имеет водоохлаждаемый корпус 1 и вы ступающие сопла 2, состо щие из двух концентрично расположенных труб 3 и 4, по внутренней из которых подаетс кислород, а по внешней - природный газ. Величину зазора между концентрично расположенными трубами устанавливают в зависимости от длины выступающей части сопла, равным 0,0005 0,0020 ее длины. Фурма работает следующим образом. Породный газ, проход с большой скоростью по кольцевому зазору между трубами 3 и 4, охлаждает последнюю и нагреваетс до 500-7001. Даль- нейшнй подъем температуры газа замедл етс вследствие теплообмена через стенку внутренней трубы с кислородом и зндотермической реакщш разложеии|1 природного газа.The invention relates to the field of metallurgy, in particular to devices for blowing a liquid metal, and can be used in the refining of a liquid metal. A known tuyere for gas-oxygen bath purging consisting of two concentric tubes. The lance is cooled with water or a liquid oxidizer 1. The closest in technical essence and the achieved result of the present invention is a lance, a water-cooled body and nozzles for supplying oxygen and gas 2J - Combined supply of pelvic oxidant and cooling reagent to the reaction zone reduces oxygen which contributes, in turn, to reduced dust removal when purging in the reaction zone. A disadvantage of the known construction is the impossibility of conducting purging at a sufficient depth of the melt. The purpose of the invention is to increase the efficiency of blowing and durability of the tuyere. This is achieved by the fact that each nozzle of the tuyere is protruding in the form of two co1P1rnrnichno located pipes forming centrally-oxygen oxygen and perifertynny for supplying gas channels, and the length of the protruding part of the nozzle is 100-400 diameters of the orifice, and the clearance of the gap between the pipes to the length of the nozzle is 0.0005-0.0020. In the drawing, shows a tuyere, longitudinal section. The lance has a water-cooled body 1 and a protruding nozzle 2 consisting of two concentrically arranged pipes 3 and 4, the inside of which is supplied with oxygen, and the outside with natural gas. The size of the gap between the concentrically arranged pipes is set, depending on the length of the protruding part of the nozzle, equal to 0.0005 0.0020 of its length. The lance works as follows. Breed gas, the high-speed passage through the annular gap between pipes 3 and 4, cools the latter and heats up to 500-7001. The further rise in the gas temperature is slowed down due to heat exchange through the wall of the inner tube with oxygen and the thermal reaction of the decomposition of natural gas.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| SU741986525A SU598938A1 (en) | 1974-01-17 | 1974-01-17 | Tuyere for deep blowing of metal |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| SU741986525A SU598938A1 (en) | 1974-01-17 | 1974-01-17 | Tuyere for deep blowing of metal |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| SU598938A1 true SU598938A1 (en) | 1978-03-25 |
Family
ID=20572793
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| SU741986525A SU598938A1 (en) | 1974-01-17 | 1974-01-17 | Tuyere for deep blowing of metal |
Country Status (1)
| Country | Link |
|---|---|
| SU (1) | SU598938A1 (en) |
-
1974
- 1974-01-17 SU SU741986525A patent/SU598938A1/en active
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| SU472980A1 (en) | GAS-OXYGEN FURMA3 P T B ^ • ^ - ^: ":" "- - W'SH1 The invention relates to the field of metallurgy, in particular, can be used in steelmaking. A known gas-oxygen lance for blowing melts with preliminary mixing of gases ( fuel and oxygen), which consists of coaxially arranged pipes and a head with nozzles with a central supply of cooling water. However, this lance is not equipped with a device that prevents flame from leaking from the nozzles to the mixing unit. Combustion of a mixture of gas and oxygen inside the annular supply path leads to cut In the proposed gas-oxygen tuyere, in order to prevent flame penetration from the purge nozzles into the fuel-oxygen path, the latter in the lower part is divided by an annular water-cooled partition with openings (an annular partition is manufactured metal, for example copper), an annular gas manifold is placed under the partition, which communicates with the purge nozzles. FIG. 1 shows the gas-oxygen |) urma in section; in fig. 2 is the same; the section along A — A in FIG. 1. The described lance consists of three coaxial alipulations of the pipes, through which, like in an ordinary oxygen lance, the head I is fed, and water is drained from it, and purging gas is fed into it. The lance has a central-axial supply of water 2 to the head I 5 for cooling, channels 3 for draining water from the cetiral cavity of the head into the inter-pipe cavity 4 of the lance. Channels 3 are evenly distributed between the nozzles 5. In the tail part of the tuyere, as in the known tuyeres, there are 10 nozzles b and 7, respectively, for iodachi in the tuyere and removal of water for cooling from it, as well as the nozzles 8 and 9, respectively, for introducing oxygen into the tuyere and fuel (gas). In addition, in the tail part of the tuyere, at the 15th level of the tubing 9, there is a mixing ring 10, which overlaps the annular gap formed by the central (axial) pipe 11 and the separation pipe 12. The mixing ring 10 is sealed 20 (for example, by welding), welded or with one of these pipes or with both. In the first case, the circumferential docking with the pipe has a seal 13. The mixing ring 10 contains a series of vertical holes — mixing nozzles 14, through which from the upper part 15 of the annular gap, blocked by ring 10, oxygen passes into the fuel-oxygen path 16. The mixing nozzles 14 in the lower part are articulated with openings 17, which serve to supply gaseous | |
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