GB2140453A - Method of generating a reducing gas - Google Patents

Method of generating a reducing gas Download PDF

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Publication number
GB2140453A
GB2140453A GB08314821A GB8314821A GB2140453A GB 2140453 A GB2140453 A GB 2140453A GB 08314821 A GB08314821 A GB 08314821A GB 8314821 A GB8314821 A GB 8314821A GB 2140453 A GB2140453 A GB 2140453A
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United Kingdom
Prior art keywords
gas
bath
gasifier
furnace
fuel
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.)
Granted
Application number
GB08314821A
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GB8314821D0 (en
GB2140453B (en
Inventor
Frank Virgil Summers
David Charles Meissner
Ronald Brown
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Midrex Corp
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Midrex Corp
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Filing date
Publication date
Application filed by Midrex Corp filed Critical Midrex Corp
Publication of GB8314821D0 publication Critical patent/GB8314821D0/en
Priority claimed from US06/659,109 external-priority patent/US4553742A/en
Publication of GB2140453A publication Critical patent/GB2140453A/en
Application granted granted Critical
Publication of GB2140453B publication Critical patent/GB2140453B/en
Expired legal-status Critical Current

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Classifications

    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10J—PRODUCTION OF PRODUCER GAS, WATER-GAS, SYNTHESIS GAS FROM SOLID CARBONACEOUS MATERIAL, OR MIXTURES CONTAINING THESE GASES; CARBURETTING AIR OR OTHER GASES
    • C10J3/00—Production of combustible gases containing carbon monoxide from solid carbonaceous fuels
    • C10J3/57—Gasification using molten salts or metals
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10J—PRODUCTION OF PRODUCER GAS, WATER-GAS, SYNTHESIS GAS FROM SOLID CARBONACEOUS MATERIAL, OR MIXTURES CONTAINING THESE GASES; CARBURETTING AIR OR OTHER GASES
    • C10J3/00—Production of combustible gases containing carbon monoxide from solid carbonaceous fuels
    • C10J3/72—Other features
    • C10J3/723—Controlling or regulating the gasification process
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10J—PRODUCTION OF PRODUCER GAS, WATER-GAS, SYNTHESIS GAS FROM SOLID CARBONACEOUS MATERIAL, OR MIXTURES CONTAINING THESE GASES; CARBURETTING AIR OR OTHER GASES
    • C10J3/00—Production of combustible gases containing carbon monoxide from solid carbonaceous fuels
    • C10J3/72—Other features
    • C10J3/74—Construction of shells or jackets
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10J—PRODUCTION OF PRODUCER GAS, WATER-GAS, SYNTHESIS GAS FROM SOLID CARBONACEOUS MATERIAL, OR MIXTURES CONTAINING THESE GASES; CARBURETTING AIR OR OTHER GASES
    • C10J3/00—Production of combustible gases containing carbon monoxide from solid carbonaceous fuels
    • C10J3/72—Other features
    • C10J3/82—Gas withdrawal means
    • C10J3/84—Gas withdrawal means with means for removing dust or tar from the gas
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10J—PRODUCTION OF PRODUCER GAS, WATER-GAS, SYNTHESIS GAS FROM SOLID CARBONACEOUS MATERIAL, OR MIXTURES CONTAINING THESE GASES; CARBURETTING AIR OR OTHER GASES
    • C10J3/00—Production of combustible gases containing carbon monoxide from solid carbonaceous fuels
    • C10J3/72—Other features
    • C10J3/86—Other features combined with waste-heat boilers
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21B—MANUFACTURE OF IRON OR STEEL
    • C21B13/00—Making spongy iron or liquid steel, by direct processes
    • C21B13/0073—Selection or treatment of the reducing gases
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21B—MANUFACTURE OF IRON OR STEEL
    • C21B13/00—Making spongy iron or liquid steel, by direct processes
    • C21B13/02—Making spongy iron or liquid steel, by direct processes in shaft furnaces
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10J—PRODUCTION OF PRODUCER GAS, WATER-GAS, SYNTHESIS GAS FROM SOLID CARBONACEOUS MATERIAL, OR MIXTURES CONTAINING THESE GASES; CARBURETTING AIR OR OTHER GASES
    • C10J2300/00—Details of gasification processes
    • C10J2300/09—Details of the feed, e.g. feeding of spent catalyst, inert gas or halogens
    • C10J2300/0913—Carbonaceous raw material
    • C10J2300/093—Coal
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10J—PRODUCTION OF PRODUCER GAS, WATER-GAS, SYNTHESIS GAS FROM SOLID CARBONACEOUS MATERIAL, OR MIXTURES CONTAINING THESE GASES; CARBURETTING AIR OR OTHER GASES
    • C10J2300/00—Details of gasification processes
    • C10J2300/09—Details of the feed, e.g. feeding of spent catalyst, inert gas or halogens
    • C10J2300/0913—Carbonaceous raw material
    • C10J2300/0943—Coke
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10J—PRODUCTION OF PRODUCER GAS, WATER-GAS, SYNTHESIS GAS FROM SOLID CARBONACEOUS MATERIAL, OR MIXTURES CONTAINING THESE GASES; CARBURETTING AIR OR OTHER GASES
    • C10J2300/00—Details of gasification processes
    • C10J2300/09—Details of the feed, e.g. feeding of spent catalyst, inert gas or halogens
    • C10J2300/0953—Gasifying agents
    • C10J2300/0959—Oxygen
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10J—PRODUCTION OF PRODUCER GAS, WATER-GAS, SYNTHESIS GAS FROM SOLID CARBONACEOUS MATERIAL, OR MIXTURES CONTAINING THESE GASES; CARBURETTING AIR OR OTHER GASES
    • C10J2300/00—Details of gasification processes
    • C10J2300/09—Details of the feed, e.g. feeding of spent catalyst, inert gas or halogens
    • C10J2300/0953—Gasifying agents
    • C10J2300/0973—Water
    • C10J2300/0976—Water as steam
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10J—PRODUCTION OF PRODUCER GAS, WATER-GAS, SYNTHESIS GAS FROM SOLID CARBONACEOUS MATERIAL, OR MIXTURES CONTAINING THESE GASES; CARBURETTING AIR OR OTHER GASES
    • C10J2300/00—Details of gasification processes
    • C10J2300/09—Details of the feed, e.g. feeding of spent catalyst, inert gas or halogens
    • C10J2300/0983—Additives
    • C10J2300/0996—Calcium-containing inorganic materials, e.g. lime
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10J—PRODUCTION OF PRODUCER GAS, WATER-GAS, SYNTHESIS GAS FROM SOLID CARBONACEOUS MATERIAL, OR MIXTURES CONTAINING THESE GASES; CARBURETTING AIR OR OTHER GASES
    • C10J2300/00—Details of gasification processes
    • C10J2300/18—Details of the gasification process, e.g. loops, autothermal operation
    • C10J2300/1846—Partial oxidation, i.e. injection of air or oxygen only
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21B—MANUFACTURE OF IRON OR STEEL
    • C21B2100/00—Handling of exhaust gases produced during the manufacture of iron or steel
    • C21B2100/20—Increasing the gas reduction potential of recycled exhaust gases
    • C21B2100/28—Increasing the gas reduction potential of recycled exhaust gases by separation
    • C21B2100/282—Increasing the gas reduction potential of recycled exhaust gases by separation of carbon dioxide
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21B—MANUFACTURE OF IRON OR STEEL
    • C21B2100/00—Handling of exhaust gases produced during the manufacture of iron or steel
    • C21B2100/40—Gas purification of exhaust gases to be recirculated or used in other metallurgical processes
    • C21B2100/42—Sulphur removal
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21B—MANUFACTURE OF IRON OR STEEL
    • C21B2100/00—Handling of exhaust gases produced during the manufacture of iron or steel
    • C21B2100/40—Gas purification of exhaust gases to be recirculated or used in other metallurgical processes
    • C21B2100/44—Removing particles, e.g. by scrubbing, dedusting
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21B—MANUFACTURE OF IRON OR STEEL
    • C21B2100/00—Handling of exhaust gases produced during the manufacture of iron or steel
    • C21B2100/60—Process control or energy utilisation in the manufacture of iron or steel
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21B—MANUFACTURE OF IRON OR STEEL
    • C21B2100/00—Handling of exhaust gases produced during the manufacture of iron or steel
    • C21B2100/60—Process control or energy utilisation in the manufacture of iron or steel
    • C21B2100/64—Controlling the physical properties of the gas, e.g. pressure or temperature
    • 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
    • Y02P10/134—Reduction of greenhouse gas [GHG] emissions by avoiding CO2, e.g. using hydrogen
    • 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

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Organic Chemistry (AREA)
  • Combustion & Propulsion (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Manufacturing & Machinery (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Manufacture Of Iron (AREA)
  • Hydrogen, Water And Hydrids (AREA)
  • Waste-Gas Treatment And Other Accessory Devices For Furnaces (AREA)

Abstract

A reducing gas is generated in a molten metal bath wherein fuel, oxygen and a flux are injected into a pressure-tight vessel beneath the bath to produce a partially-desulfurized partial-oxidation gas having a hydrogen and carbon monoxide content of at least 50% and the process is controlled by injecting steam or a fuel rich gas consisting substantially of hydrogen, carbon monoxide methane, or a mixture thereof as a coolant to the metal bath between 1350 DEG C and 1600 DEG C by adjusting the coolant flow rate. <IMAGE>

Description

SPECIFICATION Method of generating a reducing gas This invention concerns a method and apparatus for generating a low-sulfur reducing gas by the gasification of carbonaceous fuel in a molten iron bath. Fuel oxygen and a slag former are injected into the molten metal bath through the bottom of the bath-containing vessel. The reaction within the vessel is cooled by the injection of a gaseous coolant which is recycled, spent top gas from a direct reduction furnace, steam or a mixture thereof.
The present invention is an improvement to German OLS 27 50 275, which teaches the generation of a reducing gas in a molten metal bath. The known gasifier is noted for its refractory wear. The present invention alleviates the refractory wear problem by maintaining the bath temperature of the gasifier at a lower level. This is achieved by injecting a coolant into the molten metal bath to cool the reaction.
The present invention also provides a wellbalanced reducing gas for the direct reduction of iron. This is achieved by maintaining the operating temperature of the molten bath gasifier above the iron-carbon eutectic point.
In the direct reduction of iron oxide to metallized iron in a shaft furnace, the reacted top gas is superheated and must be cooled immediately upon removal from the furnace. The present invention utilizes this superheat to calcine lime for sulfur removal from the shaft furnace.
This invention is better understood by referring to the following detailed description and the appended drawings in which: Figure 1 is a schematic diagram of a preferred embodiment of the invention showing a molten bath gasifier for supplying reducing gas to a shaft furnace and the necessary auxiliary equipment.
Figure 2 is a schematic diagram similar to Figure 1 showing an alternative flow sheet.
Figure 3 is yet another alternative flow sheet for achieving the objects of the present invention.
Referring now to Figure la a molten bath gasifier 10 contains a molten iron bath 12 and a fluid slag 14.
Cooling coils 16 surround the gasifier; fuel such as coal from source 20 is injected into the bath through the bottom of the gasifier. A flux such as lime from source 22 is injected into the bath as needed to adjust the fluidity of the slag and to assist in sulfur removal. Oxygen from source 24 is also injected into the bath through the bottom of the gasifier to oxidize and gasify the fuel to carbon monoxide.
Suitable fuels are coal, a hydrocarbon, charcoal, coke oven gas, or any mixture thereof. The preferred fuel is powdered coal.
External cooling of the gasifier is provided by coils 16. Water from source 28 passes through the coils and emerges as steam from line 30. It is desired to maintain the operating temperature of the gasifier at about 1500"C. Steam from source 32 or carbon dioxide-lean top gas from line 34 or a combination controlled by valve 36 are injected into the molten bath through line 38. The temperature of the bath is monitored by a device (not shown) which controls the operation of valve 36 and thus the injection of steam and/or cleaned top gas.
Molten slag 14 is removed from the gasifier at outlet 40 as required. Hot partial oxidation gas (reducing gas) is removed from gasifier 10 through line 42 after which it is tempered or quenched to a temperature below slag fusion temperature by car bon dioxide-lean top gas from line 44 in quencher 46. Heated carbon dioxide-lean top gas from line 48 is added to the quenched reducing gas and the resulting mixture is intorduced to direct reduction furnace 50 through line 52. Iron oxide from bin 54 is fed into furnace 50 through line 56 to form a packed bed burden therein. The downwardly moving iron oxide burden is reduced to metallized iron by countercurrent flow of the reducing gas. Metailized iron is removed at outlet 58 from the furnace and spent top gas is removed from the furnace via line 60.If desired, lime or limestone may be fed to the furnace through line 56 to form a part of the descending burden. The heat in the spent top gas will calcine the lime. If there is any appreciable sulfur in the reducing gas, it will combine with the calcium as calcium sulfide which is removed with the metallized iron along with any unreacted calcium oxide through discharge pipe 58. This will prevent contamination of the direct reduced iron with sulfide as well as preventing contamination of the spent top gas.
Because of thermodynamic restrictions, not all of the hydrogen and carbon monoxide in the reducing gas will react with the iron oxide, thus the spent top gas removed through line 60 contains valuable hydrogen and carbon monoxide. The spent top gas is passed through cooler 62 and scrubber 64 to reduce the gas temperature and remove water and dust from the gas. A portion of the cleaned, cooled top gas passes through lines 66 and 68 to be used as fuel for burner 70. Combustion air is provided from source 72 and additional fuel may be injected from source 74 if necessary for proper operation of burner 70. If it is desired to produce export fuel for other processes, such export fuel may be withdrawn from line 66 through line 76 and stored in tank 78.
The major portion of the spent top gas from line 66 is compressed in compressor 80, then cleaned of carbon dioxide in an acid gas removal system 82.
The resulting CO2-lean top gas is used in three ways, first to cool the molten metal bath through lines 34 and 38; second, to temper the gasified reducing gas through line 44; and third, to be introduced to heater 84 through line 86 to be re-heated for controlling the temperature of the reducing gas in line 52.
In operation, the temperature of the molten metal bath is maintained at a desired operating temperature of between 1350 and 1600 C, preferably about 1500 C. The temperature of the reducing gas in line 52 is maintained between 800 and 900O C, and preferably at a temperature of about 850O C to provide a reducing gas which will react with the iron oxide burden, but will not meet the metallized iron product An alternative embodiment shown in Figure 2 includes a sulfur removal system 90 into which calcium oxide is fed through line 92 and the reaction product, calcium sulfide is removed through line 94.
Thus a substantially sulfur-free reducing gas is introduced to furnace 50 through line 52.
In an alternative embodiment shown in Figure 3, the coolant injected into gasifier 10 through line 38 is cleaned, cooled, spent top gas having the same composition as in line 66. The carbon dioxide removal system 82 provides fuel rich gas for line 44, a portion of which is injected into gasifier 10 above the molten metal bath through line 98. This provides a somewhat cooler reducing gas in line 42, being on the order of about 1500 C. This reducing gas is then reduced to a temperature of about 850 C in quencher 46 prior to its injection into the direct reduction furnace 50.
From the foregoing, it is readily apparent that we have developed a method and apparatus for generating a reducing gas in a molten metal bath, in cooperation with a shaft furnace for the direct reduction of iron oxide to metallized iron. The process is highly efficient and results in a substantially sulfur-free metallized iron as well as a substantially sulfur-free spent top gas.

Claims (12)

1. In a method for generating a reducing gas in a molten metal bath wherein fuel, oxygen and a flux are injected into a pressure-tight vessel beneath the bath to produce a partially-desulfurized partialoxidation gas having a hydrogen and carbon monoxide content of at least 80%, the improvement comprising a) injecting a coolant into said molten metal bath, said coolant being steam or a fuel rich gas consisting substantially of hydrogen, carbon monoxide and methane, or a mixture thereof; and b) maintaining the temperature of the metal bath between 1350 C and 16000C by adjusting the coolant flow rate.
2. A method according to claim 1 further comprising a) quenching the partial-oxidation gas with carbon dioxide lean gas to produce a reducing gas at a temperature between about 800 and 900 C; b) introducing the tempered gas into a direct reduction furnace having an iron oxide burden therein to reduce the iron oxide to metallized iron and form a top gas; c) removing the top gas from the furnace and removing a substantial portion of the carbon dioxide therefrom; and d) introducing CO2-lean top gas to the bottom of the molten metal bath as a coolant to cool the metal bath.
3. A method according to claim 1 wherein the flux is in the form of limestone, dolomite or calcined dolomite.
4. A method according to claim 1 further comprising injecting fuel rich gas into said vessel above the bath to maintain the temperature of the partialoxidation gas between 1350 and 1600 C.
5. A method according to claim 4 wherein the fuel rich gas is directed downwardly toward the molten metal bath.
6. A method according to claim 1 wherein said coolant is CO2-rich spent reducing gas produced by the direct reduction of iron oxide to metallized iron.
7. A method according to claim 2 further comprising introducing a sulfur acceptor into said direct reduction furnace as a portion of said burden to desulfurize the metallized iron product and the spent top gas.
8. A method according to claim 7 wherein said sulfur acceptor is selected from the group comprising lime, limestone, dolomite and calcined dolomite.
9. Apparatus for generating a reducing gas and reducing iron oxide, said apparatus comprising a) a molten bath gasifierfor producing a gasifier gas; b) a generally vertical shaft furnace for the direct reduction of iron, said furnace having particle introducing means at the top thereof, particle removal means at the bottom thereof for establishing a descending burden therein, reducing gas introduction means between said particle introducing means and said particle removal means and a spent top gas outlet for removing spent top gas from the upper portion of said furnace; c) a first conduit communicating with said gasifier and said reducing gas introduction means for removing reducing gas from said gasifier and introducing reducing gas to said shaft furnace; d) means for cooling and cleaning said spent gas removed from the upper portion of said shaft furnace;; e) a second conduit communicating with said spent top gas outlet and said cooling and cleaning means; f) acid gas removal means for removing CO2 from said cleaned, cooled spent top gas; g) a third conduit communicating with said top gas cooling and cleaning means and said acid gas removal system; h) a fourth conduit communicating between said acid gas removal system and the bottom of said gasifier; i) a fifth conduit communicating between said acid gas removal system and said first conduit; j) a sixth conduit communicating between said acid gas removal system and said first conduit and having heating means therein; k) means for injecting solid fossil fuel into the bottom of said gasifier beneath the bath line; and I) means for injecting oxygen into said gasifier beneath the bath line.
10. Apparatus according to claim 9 further comprising means for injecting a calcium-containing flux into said gasifier beneath the bath line.
11. Apparatus according to claim 9 further comprising cooling means comprising cooling coils surrounding said gasifier.
12. Apparatus according to claim 9 further comprising a seventh conduit communicating said third conduit and an export fuel storage means for removing export fuel from said apparatus.
GB08314821A 1982-03-22 1983-05-27 Method of generating a reducing gas Expired GB2140453B (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
US36071382A 1982-03-22 1982-03-22
US55650283A 1983-12-01 1983-12-01
US06/659,109 US4553742A (en) 1983-12-01 1984-10-09 Apparatus for generating a reducing gas

Publications (3)

Publication Number Publication Date
GB8314821D0 GB8314821D0 (en) 1983-07-06
GB2140453A true GB2140453A (en) 1984-11-28
GB2140453B GB2140453B (en) 1987-01-28

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JP (1) JPS59232172A (en)
AU (1) AU553896B2 (en)
CA (1) CA1204287A (en)
DE (1) DE3320669C3 (en)
GB (1) GB2140453B (en)
ZA (1) ZA833826B (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1997046639A1 (en) * 1996-06-01 1997-12-11 Krupp Uhde Gmbh Gas generation process
US5762659A (en) * 1990-03-08 1998-06-09 Katona; Paul G. Waste processing

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3438487A1 (en) * 1984-10-17 1986-04-24 Korf Engineering GmbH, 4000 Düsseldorf METHOD FOR THE PRODUCTION OF RAW IRON
DE3527532A1 (en) * 1985-08-01 1987-02-12 Teves Gmbh Alfred METHOD AND BRAKE SYSTEM FOR DRIVE CONTROL
AT394201B (en) * 1989-02-16 1992-02-25 Voest Alpine Ind Anlagen METHOD FOR GENERATING COMBUSTIBLE GASES IN A MELT-UP CARBURETTOR
JPH06100917A (en) * 1991-10-09 1994-04-12 Cvg Siderurgica Del Orinoco Ca Method for direct reduction of iron-containing metal oxide

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2098625A (en) * 1981-05-20 1982-11-24 Ips Interproject Service Ab Carbon gasification method

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3526478A (en) * 1968-11-01 1970-09-01 Black Sivalls & Bryson Inc Generation of hydrogen from sulfurbearing carbonaceous fuel
DE2401540B2 (en) * 1974-01-14 1975-11-13 Fried. Krupp Gmbh, 4300 Essen Method for melting sponge iron
DE2655813B2 (en) * 1976-12-09 1980-10-23 Kloeckner-Humboldt-Deutz Ag, 5000 Koeln Process and plant for the direct and continuous extraction of iron
DE2710106B2 (en) * 1977-03-08 1980-08-14 Eisenwerk-Gesellschaft Maximilianshuette Mbh, 8458 Sulzbach-Rosenberg Process for the production of liquid pig iron
DE2750725A1 (en) * 1977-11-12 1979-05-17 Kloeckner Humboldt Deutz Ag Prodn. of sulphur-free synthesis gas in high-temp. melt - in presence of high-basicity solid slag-forming material
US4188022A (en) * 1978-09-08 1980-02-12 Midrex Corporation Hot discharge direct reduction furnace
JPS5589395A (en) * 1978-12-26 1980-07-05 Sumitomo Metal Ind Ltd Gasification of solid carbonaceous material and its device
DE3024977A1 (en) * 1980-07-02 1982-01-28 Klöckner-Humboldt-Deutz AG, 5000 Köln METHOD FOR PRODUCING REACTION GAS
DE3034539C2 (en) * 1980-09-12 1982-07-22 Korf-Stahl Ag, 7570 Baden-Baden Method and device for the direct production of liquid pig iron from lumpy iron ore

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2098625A (en) * 1981-05-20 1982-11-24 Ips Interproject Service Ab Carbon gasification method

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5762659A (en) * 1990-03-08 1998-06-09 Katona; Paul G. Waste processing
WO1997046639A1 (en) * 1996-06-01 1997-12-11 Krupp Uhde Gmbh Gas generation process

Also Published As

Publication number Publication date
GB8314821D0 (en) 1983-07-06
GB2140453B (en) 1987-01-28
DE3320669C3 (en) 1995-02-09
JPS59232172A (en) 1984-12-26
DE3320669A1 (en) 1984-12-13
JPH0456081B2 (en) 1992-09-07
CA1204287A (en) 1986-05-13
ZA833826B (en) 1984-01-12
AU1538583A (en) 1984-12-13
AU553896B2 (en) 1986-07-31

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