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WO2008037132A1 - Procédé de fusion de fer mis en oeuvre dans un haut-fourneau faisant intervenir de l'oxygène purifié et du gaz de houille, et dispositif associé - Google Patents

Procédé de fusion de fer mis en oeuvre dans un haut-fourneau faisant intervenir de l'oxygène purifié et du gaz de houille, et dispositif associé Download PDF

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Publication number
WO2008037132A1
WO2008037132A1 PCT/CN2006/003280 CN2006003280W WO2008037132A1 WO 2008037132 A1 WO2008037132 A1 WO 2008037132A1 CN 2006003280 W CN2006003280 W CN 2006003280W WO 2008037132 A1 WO2008037132 A1 WO 2008037132A1
Authority
WO
WIPO (PCT)
Prior art keywords
gas
blast furnace
iron
furnace
pure oxygen
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.)
Ceased
Application number
PCT/CN2006/003280
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English (en)
Chinese (zh)
Inventor
Jiule Zhou
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Individual filed Critical Individual
Priority to US12/226,940 priority Critical patent/US20090095134A1/en
Publication of WO2008037132A1 publication Critical patent/WO2008037132A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21B—MANUFACTURE OF IRON OR STEEL
    • C21B5/00—Making pig-iron in the blast furnace
    • C21B5/06—Making pig-iron in the blast furnace using top gas in the blast furnace process
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21B—MANUFACTURE OF IRON OR STEEL
    • C21B5/00—Making pig-iron in the blast furnace
    • 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
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F27—FURNACES; KILNS; OVENS; RETORTS
    • F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
    • F27D17/00—Arrangements for using waste heat; Arrangements for using, or disposing of, waste gases
    • F27D17/20—Arrangements for treatment or cleaning of waste gases
    • 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
    • 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
    • C21C—PROCESSING OF PIG-IRON, e.g. REFINING, MANUFACTURE OF WROUGHT-IRON OR STEEL; TREATMENT IN MOLTEN STATE OF FERROUS ALLOYS
    • C21C2100/00—Exhaust gas
    • C21C2100/06—Energy from waste gas used in other processes
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
    • C22B1/00—Preliminary treatment of ores or scrap
    • C22B1/14—Agglomerating; Briquetting; Binding; Granulating
    • C22B1/16—Sintering; Agglomerating
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
    • C22B5/00—General methods of reducing to metals
    • C22B5/02—Dry methods smelting of sulfides or formation of mattes
    • C22B5/12—Dry methods smelting of sulfides or formation of mattes by gases
    • 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
    • Y02P10/20—Recycling
    • 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
    • Y02P10/25—Process efficiency

Definitions

  • the invention relates to a blast furnace ironmaking process in the iron and steel metallurgy industry, which mainly uses pure oxygen instead of blast furnace blast, and uses high-hydrogen gas to preheat the blast furnace into the blast furnace to replace most of the coke ironmaking process.
  • the object of the present invention is to provide a new technological transformation process and equipment for the traditional blast furnace ironmaking process, namely "pure oxygen gas blast furnace ironmaking process and equipment”.
  • the ore material consisting of pellets, alkaline sinter, coke, and flux is sent from the top of the furnace to the blast furnace, wherein each ton of molten iron is equipped with coke 170-200kg;
  • the pure oxygen is blown into the blast furnace, and the amount of pure oxygen is 120-200 Nm 3 per ton of molten iron.
  • the gas is pressurized into the blast furnace by the gas pressurized by the small-ball gas hot blast stove to reduce the metal ore.
  • the temperature of the preheated gas is 900-1150 ° C, and the gas pressure is 0.1-0.6 MPa;
  • the gas produced by the reduction is purified and cooled by the dust removal system, sent to the residual pressure generating device through the pipeline, reused, and then recycled to the gas tank or directly recycled.
  • Pure oxygen gas blast furnace ironmaking equipment including loading system, blast furnace gravity dust collector, ceramic tube dust collector, bag dust removal device, carbon dioxide pressure swing adsorption device, residual pressure power generation device, which is characterized by opening around the blast furnace belly There are a plurality of gas injection ports and a plurality of oxygen injection ports, and a gas preheating small ball type hot blast stove is arranged outside the blast furnace furnace, and the gas ball type thermal ⁇ furnace passes through the pipeline and a plurality of gas injection ports opened around the blast furnace belly
  • the gas-explosion-proof device is installed on the pipeline at the outlet end of the gas preheating ball-type hot blast stove, and a plurality of oxygen injection ports opened on the belly of the blast furnace are connected to the oxygen source through the pipeline.
  • the gas generated by the reaction process of the present invention is purified and cooled by a gravity dust remover, a ceramic tube type dust remover, a bag dust removal device, and a carbon dioxide pressure swing adsorption device.
  • the purified and cooled top gas is passed through the pipeline to the residual pressure power generation unit for reuse and recovered to the gas tank, and can also be recycled.
  • the productivity of the blast furnace is greatly improved, the utilization coefficient of the blast furnace can reach 6-8 tons of iron/m 3 ⁇ D, the flux consumption is reduced by 2/3, and the slag amount is reduced by 2/3, per ton.
  • the comprehensive consumption of iron can reach 492kgCE/t, and the top gas can recover electricity.
  • Figure 1 is a system diagram of the apparatus of the present invention.
  • Pellet ore, alkaline sinter, coke, and flux are fed into the blast furnace from the top of the furnace, wherein 180 kg of coke per ton of iron is added ; then pure oxygen is bubbled into the blast furnace, and at the same time, the ball is heated by the hot blast stove.
  • the gas is injected into the blast furnace to directly reduce the pellets and iron-containing raw materials.
  • the oxygen per ton of molten iron is 130Nm 3 , and the gas is preheated to 1000 ° C - 1100 ° C by a ball-type hot blast stove.
  • the gas pressure is 0.2 MPa.
  • the gas generated by the reaction process is purified and cooled by a gravity dust remover, a ceramic tube type dust remover, a bag filter and a carbon dioxide pressure swing adsorption device, and the purified and cooled top gas is passed through the pipeline to the residual pressure power generation device for reuse. It can be recycled to the gas tank. Of course, it can also be recycled.
  • Pure oxygen gas blast furnace iron making equipment including feeding device 1, blast furnace 2, gravity dust collector 4, ceramic tube dust collector 5, bag filter 6, carbon dioxide pressure swing adsorption device 7, residual pressure power generation device 8, its structural characteristics a plurality of gas injection ports are respectively opened on the upper and lower sides of the blast furnace 1 and a plurality of oxygen injection ports, a gas feed coil 9 and an oxygen feed coil 3 are respectively disposed at a periphery of the abdomen, and a plurality of gas injection ports are respectively connected to the gas feed coil 9 and the plurality of oxygen injection ports are respectively connected.
  • the lead pipe is connected to the oxygen feeding coil 3; a gas preheating small ball type hot blast stove 11 is disposed outside the blast furnace 2, and the gas preheating small ball type hot blast stove 11 is fed into the coil 9 through the gas pipe 12 and the gas.
  • a gas explosion-proof safety device 10 is installed in conjunction with the gas pipe 12, a gas explosion-proof safety device 10 is installed.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Manufacturing & Machinery (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Environmental & Geological Engineering (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Waste-Gas Treatment And Other Accessory Devices For Furnaces (AREA)
  • Manufacture Of Iron (AREA)

Abstract

L'invention concerne un procédé de fusion de fer mis en oeuvre dans un haut-fourneau faisant intervenir de l'oxygène purifié et du gaz de houille; et un dispositif associé. Ce procédé comprend les étapes consistant à : introduire un minerai constitué d'éléments agglomérés, un minerai fritté de base, du coke et du fondant dans un haut-fourneau, à partir de sa partie supérieure, la quantité de coke étant comprise entre 170 et 200 kilos par tonne de fer; souffler simultanément de l'oxygène purifié dans le haut-fourneau, la quantité d'oxygène purifié étant comprise entre 120 et 200 Nm3 par tonne de fer fondu; souffler simultanément du gaz de houille préchauffé et pressurisé par un haut-fourneau à très haute température de type boule dans le haut fourneau de l'invention pour réduire le minerai métallique, la température du gaz de houille étant comprise entre 900 et 1150 °C, la pression du gaz de houille étant comprise entre 0,1 et 0,6 MPa; purifier et refroidir le gaz de houille généré par la réduction à l'aide d'un système de dépoussiérage, transporter le gaz jusqu'à un générateur électrique haute pression par des pipelines pour le recycler et le recueillir dans un cylindre à gaz ou le recycler directement. Le procédé de l'invention permet d'obtenir une productivité considérablement accrue : le facteur d'utilisation du haut-fourneau peut atteindre jusqu'à 6 à 8 tonnes de fer par m3 ⋅ D, la consommation de fondant est réduite de deux tiers, la quantité de scories est également réduite de deux tiers, la consommation totale par tonne de fer peut être de 492 kgCE/t, et le gaz de houille provenant du haut-fourneau peut être recyclé et utilisé pour générer de l'électricité.
PCT/CN2006/003280 2006-09-12 2006-12-05 Procédé de fusion de fer mis en oeuvre dans un haut-fourneau faisant intervenir de l'oxygène purifié et du gaz de houille, et dispositif associé Ceased WO2008037132A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
US12/226,940 US20090095134A1 (en) 2006-09-12 2006-12-05 Process and Equipment for Blast Furnace Ironmaking Using Pure Oxygen and Gas

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN200610047720.9 2006-09-12
CNA2006100477209A CN1916187A (zh) 2006-09-12 2006-09-12 纯氧煤气高炉炼铁工艺和设备

Publications (1)

Publication Number Publication Date
WO2008037132A1 true WO2008037132A1 (fr) 2008-04-03

Family

ID=37737250

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CN2006/003280 Ceased WO2008037132A1 (fr) 2006-09-12 2006-12-05 Procédé de fusion de fer mis en oeuvre dans un haut-fourneau faisant intervenir de l'oxygène purifié et du gaz de houille, et dispositif associé

Country Status (3)

Country Link
US (1) US20090095134A1 (fr)
CN (1) CN1916187A (fr)
WO (1) WO2008037132A1 (fr)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101792834A (zh) * 2010-03-26 2010-08-04 西安陕鼓动力股份有限公司 高炉煤气能量回收系统管网内氮气置换煤气的自动吹扫法
CN101792833A (zh) * 2010-03-26 2010-08-04 西安陕鼓动力股份有限公司 高炉煤气能量回收系统管网内空气置换氮气的自动吹扫法
CN101792831A (zh) * 2010-03-26 2010-08-04 西安陕鼓动力股份有限公司 高炉煤气能量回收系统管网内煤气置换氮气的自动吹扫法
CN103695665A (zh) * 2013-12-18 2014-04-02 中冶南方工程技术有限公司 一种利用含铁锌粉尘回收锌并生产铁水的工艺

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101519703B (zh) * 2008-02-26 2010-12-08 宝山钢铁股份有限公司 一种低焦比高炉炼铁工艺
CN101280348A (zh) * 2008-04-23 2008-10-08 沈阳东方钢铁有限公司 高温煤气高炉炼铁工艺
LU91543B1 (en) * 2009-03-24 2010-09-27 Wurth Paul Sa Tuyere stock arrangement for a blast furnace and method for operating a blast furnace
LU91559B1 (en) * 2009-04-28 2010-10-29 Wurth Paul Sa Method for feeding a burden to a blast furnace
JP4743332B2 (ja) * 2009-04-30 2011-08-10 Ｊｆｅスチール株式会社 高炉操業方法
CN113718074A (zh) * 2021-09-03 2021-11-30 中冶赛迪工程技术股份有限公司 一种低碳高炉炼铁方法

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US4316741A (en) * 1979-04-26 1982-02-23 Krupp-Koppers Gmbh Blast furnace process employing exchange fuel gas
SU1465462A1 (ru) * 1987-07-27 1989-03-15 Институт черной металлургии Способ ведени доменной плавки
JPH0261004A (ja) * 1988-08-24 1990-03-01 Sumitomo Metal Ind Ltd 高炉操業方法
CN1487097A (zh) * 2003-06-23 2004-04-07 安徽工业大学 一种高效低co2排放富氢燃气纯氧高炉炼铁工艺

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Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101792834A (zh) * 2010-03-26 2010-08-04 西安陕鼓动力股份有限公司 高炉煤气能量回收系统管网内氮气置换煤气的自动吹扫法
CN101792833A (zh) * 2010-03-26 2010-08-04 西安陕鼓动力股份有限公司 高炉煤气能量回收系统管网内空气置换氮气的自动吹扫法
CN101792831A (zh) * 2010-03-26 2010-08-04 西安陕鼓动力股份有限公司 高炉煤气能量回收系统管网内煤气置换氮气的自动吹扫法
CN101792833B (zh) * 2010-03-26 2011-06-22 西安陕鼓动力股份有限公司 高炉煤气能量回收系统管网内空气置换氮气的自动吹扫法
CN103695665A (zh) * 2013-12-18 2014-04-02 中冶南方工程技术有限公司 一种利用含铁锌粉尘回收锌并生产铁水的工艺
CN103695665B (zh) * 2013-12-18 2015-04-01 中冶南方工程技术有限公司 一种利用含铁锌粉尘回收锌并生产铁水的工艺

Also Published As

Publication number Publication date
US20090095134A1 (en) 2009-04-16
CN1916187A (zh) 2007-02-21

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