GB1257320A - - Google Patents
Info
- Publication number
- GB1257320A GB1257320A GB5906868A GB5906868A GB1257320A GB 1257320 A GB1257320 A GB 1257320A GB 5906868 A GB5906868 A GB 5906868A GB 5906868 A GB5906868 A GB 5906868A GB 1257320 A GB1257320 A GB 1257320A
- Authority
- GB
- United Kingdom
- Prior art keywords
- fuel
- tuyere
- obstacle
- projection
- air
- 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
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41J—TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
- B41J23/00—Power drives for actions or mechanisms
- B41J23/02—Mechanical power drives
- B41J23/04—Mechanical power drives with driven mechanism arranged to be clutched to continuously- operating power source
- B41J23/08—Mechanical power drives with driven mechanism arranged to be clutched to continuously- operating power source by one-revolution or part-revolution clutches
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21B—MANUFACTURE OF IRON OR STEEL
- C21B5/00—Making pig-iron in the blast furnace
- C21B5/001—Injecting additional fuel or reducing agents
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21B—MANUFACTURE OF IRON OR STEEL
- C21B5/00—Making pig-iron in the blast furnace
- C21B5/001—Injecting additional fuel or reducing agents
- C21B5/003—Injection of pulverulent coal
-
- 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
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Manufacturing & Machinery (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Combustion Of Fluid Fuel (AREA)
- Blast Furnaces (AREA)
Abstract
1,257,320. Tuyeres; burners. COMPAGNIE FRANCHISE DE RAFFINAGE, and DE WENDEL ET CIE. 12 Dec., 1968 [13 Dec., [1967; 30 April, 1968], No. 59068/68. Headings F4B and F4T A blast furnace tuyere 1, in which is effected complete combustion of a supplementary fluid fuel added in a substantially lateral direction to the axially flowing air blast, includes at least one fuel injection tube 4, or other fuel inlet orifice, which discharges fuel into or adjacent the diametral plane of a neck 3 in the tuyere wall 2a, to form a fuel/air mixture which flows towards the downstream end 2 of the tuyere, and is ignited and forms a stable flame in the turbulent wake immediately downstream of an obstacle 6 inserted into the end of the tuyere. The obstacle 6 may comprise one or more solid or hollow tapering bodies (Figs. 1 to 4, not shown) and may be fluid cooled. In modifications (Figs. 6 and 8, not shown) the obstacle may be longitudinally extended to the plane in which the supplementary fuel is injected, and by providing there a reduced tuyere crosssection eliminates the need for a neck such as 3. In such a case the upstream end of the obstacle may be provided with-the fuel inlet orifices. A wall 12 may be mounted within and spaced from the tuyere wall 2a to shield the latter from the heat developed by the fuel combustion. In another modification (Fig. 7, not shown) jets of air, steam, inert gas or vapour, or fuel/air mixture jets are introduced near the downstream end of the tuyere to provide an aerodynamic obstruction in place of the solid or hollow obstacle, in the turbulent zone of which jets the supplemental fuel/air blast mixture burns with a stable flame. An expansion chamber may be arranged at the downstream end of the tuyere (Fig. 9, not shown). Formulµ to establish the correct position of the obstacle in the tuyere to give a stable flame under various operating conditions are given In an alternative form of tuyere, Fig. 11, the obstacle is formed by a projection 35 of the water cooled inner wall at the downstream end of the tuyere. Preferably the cone angle of the conical portion of the projection is between 10 and 30 degrees, and the surface area of the base of the cylindrical portion of the projection is not greater than 30% of the total cross-sectional area of the tuyere. The fuel is added to the air stream through an upstream fuel injection tube (not shown), the projection 35 causing a recirculatory flow of the fuel air mixture in zone 40, an electrical resistor 39 initiating ignition -to give a stable flame formation. The cooling circuit for the projection may be independent of or common with that of the remainder of the tuyere. The added fuel may be petroleum oil, fuel oil, natural gas or coke oven gas.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR132105A FR1558425A (en) | 1967-12-13 | 1967-12-13 | |
FR150159A FR95501E (en) | 1967-12-13 | 1968-04-30 | Improved process for blowing furnaces and device for carrying out the process. |
Publications (1)
Publication Number | Publication Date |
---|---|
GB1257320A true GB1257320A (en) | 1971-12-15 |
Family
ID=26181564
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB5906868A Expired GB1257320A (en) | 1967-12-13 | 1968-12-12 |
Country Status (8)
Country | Link |
---|---|
US (1) | US3596894A (en) |
AT (1) | AT296356B (en) |
BE (1) | BE725270A (en) |
FR (1) | FR95501E (en) |
GB (1) | GB1257320A (en) |
LU (1) | LU57529A1 (en) |
NL (1) | NL6817936A (en) |
SE (1) | SE339696B (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN112574761A (en) * | 2020-12-30 | 2021-03-30 | 中冶焦耐(大连)工程技术有限公司 | Coke oven top structure for realizing smokeless coal charging |
Families Citing this family (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2122682A5 (en) * | 1971-01-20 | 1972-09-01 | Siderurgie Fse Inst Rech | |
FR2145089A5 (en) * | 1971-07-08 | 1973-02-16 | Wendel Sidelor | |
US3844767A (en) * | 1972-02-12 | 1974-10-29 | P Rheinlander | Method of operating a blast furnace |
US4490171A (en) * | 1982-03-31 | 1984-12-25 | Kobe Steel, Limited | Method and apparatus for injecting pulverized fuel into a blast furnace |
ITMI20012278A1 (en) * | 2001-10-30 | 2003-04-30 | Techint Spa | DEVICE AND METHOD FOR DISCRETE AND CONTINUOUS MEASUREMENT OF THE TEMPERATURE OF LIQUID METAL IN AN OVEN OR CONTAINER FOR ITS PRODUCTION |
FR2900791B1 (en) * | 2006-05-10 | 2010-05-28 | Emily | LOADING AND UNLOADING BUCKET |
Family Cites Families (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US982244A (en) * | 1909-10-11 | 1911-01-24 | Ore Desulphurization Company | Twyer. |
US1870511A (en) * | 1931-08-28 | 1932-08-09 | John C Hopkins | Tuyere |
-
1968
- 1968-04-30 FR FR150159A patent/FR95501E/en not_active Expired
- 1968-12-11 BE BE725270A patent/BE725270A/xx unknown
- 1968-12-11 US US782860A patent/US3596894A/en not_active Expired - Lifetime
- 1968-12-12 GB GB5906868A patent/GB1257320A/en not_active Expired
- 1968-12-12 LU LU57529A patent/LU57529A1/xx unknown
- 1968-12-12 SE SE17052/68A patent/SE339696B/xx unknown
- 1968-12-13 NL NL6817936A patent/NL6817936A/xx unknown
- 1968-12-13 AT AT1218168A patent/AT296356B/en not_active IP Right Cessation
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN112574761A (en) * | 2020-12-30 | 2021-03-30 | 中冶焦耐(大连)工程技术有限公司 | Coke oven top structure for realizing smokeless coal charging |
Also Published As
Publication number | Publication date |
---|---|
DE1814615A1 (en) | 1969-07-10 |
NL6817936A (en) | 1969-06-17 |
AT296356B (en) | 1972-02-10 |
BE725270A (en) | 1969-06-11 |
FR95501E (en) | 1971-01-22 |
SE339696B (en) | 1971-10-18 |
US3596894A (en) | 1971-08-03 |
LU57529A1 (en) | 1969-04-05 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
PS | Patent sealed [section 19, patents act 1949] | ||
PLNP | Patent lapsed through nonpayment of renewal fees |