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US20060027043A1 - Method and apparatus for producing clean reducing gases from coke oven gas - Google Patents

Method and apparatus for producing clean reducing gases from coke oven gas Download PDF

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Publication number
US20060027043A1
US20060027043A1 US11/194,578 US19457805A US2006027043A1 US 20060027043 A1 US20060027043 A1 US 20060027043A1 US 19457805 A US19457805 A US 19457805A US 2006027043 A1 US2006027043 A1 US 2006027043A1
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Prior art keywords
gas
coke oven
reducing gas
steam
utilizing
Prior art date
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Abandoned
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US11/194,578
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English (en)
Inventor
Eugenio Zendejas-Martinez
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HYLASA SA de CV
Hylsa SA de CV
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Hylsa SA de CV
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Priority to US11/194,578 priority Critical patent/US20060027043A1/en
Assigned to HYLASA S.A. DE C.V. reassignment HYLASA S.A. DE C.V. ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: ZENDEJAS-MARTINEZ, EUGENIO
Publication of US20060027043A1 publication Critical patent/US20060027043A1/en
Abandoned legal-status Critical Current

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    • 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
    • C10J3/58—Production of combustible gases containing carbon monoxide from solid carbonaceous fuels combined with pre-distillation of the fuel
    • C10J3/60—Processes
    • C10J3/64—Processes with decomposition of the distillation products
    • C10J3/66—Processes with decomposition of the distillation products by introducing them into the gasification zone
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
    • B01D53/34—Chemical or biological purification of waste gases
    • B01D53/46—Removing components of defined structure
    • B01D53/48—Sulfur compounds
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
    • C01B13/00—Oxygen; Ozone; Oxides or hydroxides in general
    • C01B13/02—Preparation of oxygen
    • C01B13/0229—Purification or separation processes
    • C01B13/0248—Physical processing only
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
    • C01B3/00—Hydrogen; Gaseous mixtures containing hydrogen; Separation of hydrogen from mixtures containing it; Purification of hydrogen
    • C01B3/02—Production of hydrogen or of gaseous mixtures containing a substantial proportion of hydrogen
    • C01B3/32—Production of hydrogen or of gaseous mixtures containing a substantial proportion of hydrogen by reaction of gaseous or liquid organic compounds with gasifying agents, e.g. water, carbon dioxide, air
    • C01B3/34—Production of hydrogen or of gaseous mixtures containing a substantial proportion of hydrogen by reaction of gaseous or liquid organic compounds with gasifying agents, e.g. water, carbon dioxide, air by reaction of hydrocarbons with gasifying agents
    • C01B3/36—Production of hydrogen or of gaseous mixtures containing a substantial proportion of hydrogen by reaction of gaseous or liquid organic compounds with gasifying agents, e.g. water, carbon dioxide, air by reaction of hydrocarbons with gasifying agents using oxygen or mixtures containing oxygen as gasifying agents
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
    • C01B3/00—Hydrogen; Gaseous mixtures containing hydrogen; Separation of hydrogen from mixtures containing it; Purification of hydrogen
    • C01B3/50—Separation of hydrogen or hydrogen containing gases from gaseous mixtures, e.g. purification
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10K—PURIFYING OR MODIFYING THE CHEMICAL COMPOSITION OF COMBUSTIBLE GASES CONTAINING CARBON MONOXIDE
    • C10K1/00—Purifying combustible gases containing carbon monoxide
    • 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
    • C01—INORGANIC CHEMISTRY
    • C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
    • C01B2203/00—Integrated processes for the production of hydrogen or synthesis gas
    • C01B2203/02—Processes for making hydrogen or synthesis gas
    • C01B2203/025—Processes for making hydrogen or synthesis gas containing a partial oxidation step
    • C01B2203/0255—Processes for making hydrogen or synthesis gas containing a partial oxidation step containing a non-catalytic partial oxidation step
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
    • C01B2203/00—Integrated processes for the production of hydrogen or synthesis gas
    • C01B2203/04—Integrated processes for the production of hydrogen or synthesis gas containing a purification step for the hydrogen or the synthesis gas
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
    • C01B2203/00—Integrated processes for the production of hydrogen or synthesis gas
    • C01B2203/04—Integrated processes for the production of hydrogen or synthesis gas containing a purification step for the hydrogen or the synthesis gas
    • C01B2203/0465—Composition of the impurity
    • C01B2203/0485—Composition of the impurity the impurity being a sulfur compound
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
    • C01B2203/00—Integrated processes for the production of hydrogen or synthesis gas
    • C01B2203/06—Integration with other chemical processes
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
    • C01B2203/00—Integrated processes for the production of hydrogen or synthesis gas
    • C01B2203/08—Methods of heating or cooling
    • C01B2203/0872—Methods of cooling
    • C01B2203/0888—Methods of cooling by evaporation of a fluid
    • C01B2203/0894—Generation of steam
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
    • C01B2203/00—Integrated processes for the production of hydrogen or synthesis gas
    • C01B2203/80—Aspect of integrated processes for the production of hydrogen or synthesis gas not covered by groups C01B2203/02 - C01B2203/1695
    • C01B2203/84—Energy production
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
    • C01B2210/00—Purification or separation of specific gases
    • C01B2210/0043—Impurity removed
    • C01B2210/0046—Nitrogen
    • 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
    • C10J2300/16—Integration of gasification processes with another plant or parts within the plant
    • C10J2300/1671—Integration of gasification processes with another plant or parts within the plant with the production of electricity
    • 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
    • C21B2100/60—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
    • C21B2100/62—Energy conversion other than by heat exchange, e.g. by use of exhaust gas in energy production
    • 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
    • C21B2100/66—Heat exchange
    • 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
    • Y02P10/122—Reduction of greenhouse gas [GHG] emissions by capturing or storing CO2
    • 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

Definitions

  • the invention refers to a process and system for producing reducing gases mainly composed of hydrogen and carbon monoxide from coke-making operations where coal is transformed into metallurgical coke, and more particularly to a process wherein the volatile components derived from coal are transformed into reducing gases suitable for chemical utilization as synthesis gas, as a reducing agent for direct reduction of iron ores and/or as a clean fuel.
  • coal is heated in order to eliminate most of the volatile components and preserving mostly the carbon structure. Coke is thereby provided with the physical and chemical properties which make it fit for providing energy and burden support in blast furnaces.
  • Volatile matter of coal comprises a number of compounds which are distilled in coke ovens constituting what is known as coke oven gas.
  • the volume and composition of coke oven gas depends on the characteristics of the coal utilized but typically untreated coke oven gas comprises about 44% of water, about 29% of hydrogen, about 3% of carbon monoxide, about 13% of methane and many impurities as ammonia, sulfur, benzene-type compounds, etc.
  • coke oven gas Since coke oven gas has a high calorific value, it is utilized mostly for heating purposes in steel plants. Typically, coke oven gas is cooled, cleaned and treated in a number of chemical processes for separating valuable compounds such as ammonia and other petrochemicals and for removing sulfur before the gas is finally burned. Cleaning of coke oven gas require's a complex and costly chemical plant.
  • U.S. Pat. No. 4,178,266 describes a process for conveying hot crude coke oven gas generated in coke ovens to a position of utilization while preventing condensation of higher hydrocarbons.
  • This patent teaches to increase the temperature of the coke oven gas by injecting an oxygen-containing gas into the coke oven gas stream so that it is partially combusted. Such injection of oxygen may increase the temperature of the mixture to about 950° C. to 1500° C.
  • the purpose of the oxygen injection is to avoid condensation of impurities and of higher hydrocarbons, thereby preventing many problems in the gas conveying systems.
  • This patent does not teach or suggest carrying out a partial combustion of coke oven gas for producing a high-quality reducing gas.
  • British Patent Specification No. 1,566,970 describes a process for the treatment of coke oven gas.
  • This patent recognizes the value of performing a partial combustion of coke oven gas in order to produce a reducing gas useful for direct reduction of iron ores.
  • the partial combustion transforms coke oven gas into a cracked gas rich in carbon monoxide and hydrogen.
  • the partial combustion process of this patent however has a number of disadvantages and does not teach or suggest a process and apparatus which integrates the energy in an improved way.
  • the present invention provides a method and apparatus with a practical and economical way of using the coke oven gas by cooling it immediately after the partial combustion cracking and also utilizing the heat produced in said partial combustion for at least two specific purposes which are critical for the operation of the reduction reactor: e.g. for the CO2 removal unit of the recycled reducing gas to the shaft reactor, and also for the sulfur removal unit needed for cleaning the coke oven gas prior to its utilization.
  • the present invention provides a method of treating hot crude coke oven gas produced in coke ovens comprising: mixing said hot crude coke oven gas with an oxygen-containing gas in order to carry out a partial combustion of said coke oven gas producing a reducing gas having a high content of hydrogen and carbon monoxide at a temperature higher than about 1000° C.; passing said hot reducing gas through a heat exchanger in order to produce high temperature steam; utilizing a first portion of said steam to produce electricity; removing sulfur compounds and other impurities of said reducing gas in a sulfur removing unit; and utilizing a second portion of said steam in said sulfur removing unit.
  • the method further includes an additional step of utilizing at least a portion of said clean reducing gas in a direct reduction plant comprising a direct reduction reactor, a CO2 removal unit and a gas heater.
  • the method further includes the additional step of utilizing a third portion of said exhausted steam in said CO2 removal unit of said direct reduction plant.
  • FIG. 1 is a schematic process diagram of a preferred embodiment of the invention.
  • FIG. 2 illustrates an example of the process showing, in a schematic process diagram similar to FIG. 1 , values of process parameters.
  • FIG. 3 is a table supplementing the information of process streams shown in FIG. 2 .
  • FIG. 4 also illustrates another example of the process showing, in a schematic process diagram of a direct reduction plant, values of process parameters operating according to the coke oven gas cleaning method of the invention.
  • numeral 10 designates a battery of coke ovens, to which coal 12 is charged and heated therein by combustion of gases 14 and air 16 .
  • Coke 18 is discharged from ovens 10 in a manner known in the art and hot crude coke oven gas 20 is produced typically at a temperature of about 600° C. degrees to 700° C.
  • Hot crude coke oven gas 20 is then mixed with an oxygen-containing gas 22 which may be produced in an air separation plant 24 from air 26 .
  • the air separation plant 24 may be of the cryogenic or a PSA-type since the purity of oxygen is not critical for this application.
  • the process may also operate with oxygen-enriched air, although the quality of the resulting reducing gas is affected by the amount of nitrogen from said air feed.
  • Hot crude coke oven gas 20 at a temperature of about 650° C. is subject to a partial combustion with oxygen 22 in combustion chamber 28 reaching temperatures above about 1000° C. At this temperature all organic compounds are converted into a high temperature reducing gas 30 mainly composed of a mixture of hydrogen and carbon monoxide, carbon dioxide, methane and water.
  • Reducing gas 30 is passed through a heat exchanger 32 where it heats steam 34 from steam drum 36 and super-heated steam 38 is utilized in turbine 40 to produce electricity in electric generator 42 . Electricity is fed through line 44 and is used in air separation plant 24 to produce oxygen for the partial combustion of coke oven gas.
  • a first portion 50 of exhausted steam 46 from turbine 40 is used in sulfur separation unit 48 and a second portion 52 is used in the CO2 separation unit 54 of a direct reduction plant.
  • the reducing gas After passing through heat exchanger 32 , the reducing gas is fed to a boiler 56 where steam 58 is produced from water 60 and is held in steam drum 36 . From boiler 56 , reducing gas 62 is finally quenched by direct contact with water in cooler 64 . Condensed water is withdrawn through pipe 66 . Cold reducing gas 68 is then fed to blower 70 and then led through pipe 72 to be treated in a sulfur removal unit 48 in a manner known in the art producing solid sulfur 74 and a stream of clean reducing gas 76 .
  • a portion of the reducing gas 76 is used for heating the coke ovens through pipe 14 and another portion 78 is compressed in compressor 80 to be injected to the reduction gas loop of a direct reduction reactor 82 .
  • Iron oxides bearing particles 84 for example iron ore pellets, lumps or mixtures thereof, are fed to reduction reactor 82 and descend by gravity through said reactor where they are contacted with high temperature reducing gases 86 , for example above 900° C. whereby iron oxides are reduced to metallic iron, known as DRI or sponge iron 88 , and discharged from the lower part of the reduction reactor 82 to be utilized in steelmaking operations.
  • Reacted reducing gas 90 is withdrawn from reactor 82 and cooled down in cooler 92 where water is removed from the gas by condensation a portion of the cooled gas 94 is recycled to the reduction reactor and another portion 96 may be vented from the reduction loop and used for example in gas heater 98 .
  • the recycled reducing gas portion 94 is compressed in compressor 100 and fed to a carbon dioxide removal unit 54 where CO2 is removed from the system thus regenerating the reducing potential of the recycled gas by elimination of water 102 and CO2 104 which are the main products of the reduction reactions carried out in reactor 82 .
  • FIGS. 2, 3 and 4 A computer-model calculation of a plant incorporating the invention was made and the results are illustrated in FIGS. 2, 3 and 4 .
  • This example clearly shows the advantages of the invention regarding its application for obtaining a reducing gas for producing good-quality direct reduced iron.

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Organic Chemistry (AREA)
  • Combustion & Propulsion (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Inorganic Chemistry (AREA)
  • Analytical Chemistry (AREA)
  • Metallurgy (AREA)
  • Health & Medical Sciences (AREA)
  • Materials Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • General Chemical & Material Sciences (AREA)
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  • Biomedical Technology (AREA)
  • Environmental & Geological Engineering (AREA)
  • Manufacture Of Iron (AREA)
  • Industrial Gases (AREA)
US11/194,578 2004-08-03 2005-08-02 Method and apparatus for producing clean reducing gases from coke oven gas Abandoned US20060027043A1 (en)

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US11/194,578 US20060027043A1 (en) 2004-08-03 2005-08-02 Method and apparatus for producing clean reducing gases from coke oven gas

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US (1) US20060027043A1 (fr)
CN (1) CN101023023B (fr)
DE (1) DE112005001881T5 (fr)
MX (1) MX2007001249A (fr)
WO (1) WO2006013455A1 (fr)

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WO2008141839A3 (fr) * 2007-05-24 2009-01-15 Lurgi Gmbh Procédé et dispositif pour traiter un gaz produit par gazéification sous pression de combustibles solides
US20120217148A1 (en) * 2009-09-22 2012-08-30 Thyssenkrupp Uhde Gmbh Method for operating a coke oven arrangement
WO2013093640A3 (fr) * 2011-12-21 2013-12-27 Hyl Technologies, S.A. De C.V. Méthode et appareil de production de fer de réduction directe (frd) à l'aide de gaz de four à coke
CN103525966A (zh) * 2013-10-08 2014-01-22 中国石油大学(北京) 利用天然气催化转化生产气基直接还原铁的方法及系统
CN103525964A (zh) * 2013-10-08 2014-01-22 中国石油大学(北京) 利用焦炉气催化转化生产气基直接还原铁的方法及系统
US20140083252A1 (en) * 2011-05-30 2014-03-27 Siemens Vai Metals Technologies Gmbh Reduction of metal oxides using gas stream containing both hydrocarbon and hydrogen
US20140260803A1 (en) * 2011-08-20 2014-09-18 Danieli & C. Officine Meccaniche, S.P.A. Process for producing direct reduced iron (dri) utilizing gases derived from coal
TWI456070B (zh) * 2011-05-13 2014-10-11 Midrex Technologies Inc 使用焦爐氣及氧氣製鋼爐氣還原氧化鐵至金屬鐵的系統及方法
WO2015086153A1 (fr) * 2013-12-12 2015-06-18 Thyssenkrupp Ag Réseau d'installations pour la production d'acier et procédé pour faire fonctionner ce réseau d'installations
WO2015086148A1 (fr) * 2013-12-12 2015-06-18 Thyssenkrupp Ag Procédé pour réduire les émissions de co2 lors du fonctionnement d'une usine sidérurgique
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WO2015015317A3 (fr) * 2013-07-22 2015-08-13 Saudi Basic Industries Corporation Utilisation de gaz de gueulard dans des procédés de réduction directe
WO2016011122A1 (fr) * 2014-07-15 2016-01-21 Midrex Technologies, Inc. Procédés et systèmes pour la production de fer de réduction directe et de gaz combustible pour aciérie
US20160115412A1 (en) * 2013-05-30 2016-04-28 Clean Coal Technologies, Inc. Treatment of coal
CN106241736A (zh) * 2016-08-03 2016-12-21 西南化工研究设计院有限公司 一种利用焦炉煤气制取冶金还原气的工艺
RU2661688C1 (ru) * 2013-12-12 2018-07-19 Тиссенкрупп Аг Способ производства синтез-газа в цикле работы металлургического завода
RU2710492C1 (ru) * 2013-12-12 2019-12-26 Тиссенкрупп Аг Производственный сталелитейный комплекс и способ эксплуатации производственного комплекса
US10781498B2 (en) 2013-12-12 2020-09-22 Thyssenkrupp Ag Combined system for producing steel and method for operating the combined system
JP2021512598A (ja) * 2018-02-12 2021-05-20 ランザテク，インコーポレイテッド 炭素変換効率を改善するためのプロセス
CN114574648A (zh) * 2020-12-02 2022-06-03 北京京诚泽宇能源环保工程技术有限公司 气基竖炉还原气制备系统及方法

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WO2011012964A2 (fr) * 2009-07-31 2011-02-03 Hyl Technologies, S.A. De C.V. Procédé de production de fer préréduit aux émissions limitées de co2
JP5495749B2 (ja) * 2009-12-10 2014-05-21 三菱重工業株式会社 水素製造設備および発電プラント
CN101871031B (zh) * 2010-06-01 2011-08-03 中国石油大学(北京) 一种利用焦炉气制还原气生产海绵铁的方法及设备
IT1402250B1 (it) * 2010-09-29 2013-08-28 Danieli Off Mecc Procedimento ed apparato per la produzione di ferro di riduzione diretta utilizzando una sorgente di gas riducente comprendente idrogeno e monossido di carbonio
CN103525965B (zh) * 2013-10-08 2015-12-02 中国石油大学(北京) 利用焦炉气非催化转化生产气基直接还原铁的方法及系统
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WO2006013455A1 (fr) 2006-02-09
CN101023023A (zh) 2007-08-22

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