WO2017043736A1 - 타르 분해 장치, 용철 제조 장치 및 용철 제조 방법 - Google Patents
타르 분해 장치, 용철 제조 장치 및 용철 제조 방법 Download PDFInfo
- Publication number
- WO2017043736A1 WO2017043736A1 PCT/KR2016/005997 KR2016005997W WO2017043736A1 WO 2017043736 A1 WO2017043736 A1 WO 2017043736A1 KR 2016005997 W KR2016005997 W KR 2016005997W WO 2017043736 A1 WO2017043736 A1 WO 2017043736A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- furnace
- tar
- iron
- molten iron
- gas
- Prior art date
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21B—MANUFACTURE OF IRON OR STEEL
- C21B13/00—Making spongy iron or liquid steel, by direct processes
- C21B13/14—Multi-stage processes processes carried out in different vessels or furnaces
- C21B13/143—Injection of partially reduced ore into a molten bath
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21B—MANUFACTURE OF IRON OR STEEL
- C21B13/00—Making spongy iron or liquid steel, by direct processes
- C21B13/0006—Making spongy iron or liquid steel, by direct processes obtaining iron or steel in a molten state
- C21B13/0013—Making spongy iron or liquid steel, by direct processes obtaining iron or steel in a molten state introduction of iron oxide into a bath of molten iron containing a carbon reductant
- C21B13/002—Reduction of iron ores by passing through a heated column of carbon
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21B—MANUFACTURE OF IRON OR STEEL
- C21B13/00—Making spongy iron or liquid steel, by direct processes
- C21B13/004—Making spongy iron or liquid steel, by direct processes in a continuous way by reduction from ores
-
- 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
- C21B2100/00—Handling of exhaust gases produced during 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
- C21B2100/20—Increasing the gas reduction potential of recycled exhaust 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
- C21B2100/20—Increasing the gas reduction potential of recycled exhaust gases
- C21B2100/22—Increasing the gas reduction potential of recycled exhaust gases by reforming
-
- 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
- C21B2100/24—Increasing the gas reduction potential of recycled exhaust gases by shift reactions
-
- 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
- C21B2100/26—Increasing the gas reduction potential of recycled exhaust gases by adding additional fuel in recirculation pipes
-
- 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
-
- 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
- C21B2100/20—Increasing the gas reduction potential of recycled exhaust gases
- C21B2100/28—Increasing the gas reduction potential of recycled exhaust gases by separation
- C21B2100/284—Increasing the gas reduction potential of recycled exhaust gases by separation of nitrogen
-
- 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
-
- 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 present invention relates to an apparatus for producing molten iron and a method for producing molten iron.
- molten reduced steelmaking method to replace the blast furnace method has been studied.
- molten iron is manufactured by directly using coal as a fuel and a reducing agent and directly using iron ore as an iron source.
- the reduced iron ore and coal are charged into a melt gasifier, and the reduced iron ore is melted to produce molten iron.
- It may include an oxygen blowing conduit for blowing oxygen into the partial combustion furnace and a steam blowing conduit for blowing steam into the partial combustion furnace.
- the steam may be manufactured using the sensible heat of the exhaust gas discharged from the reduction furnace, and may include an array boiler connected to the steam blowing conduit.
- a method for manufacturing molten iron may include charging ore into one or more reduction furnaces to produce reduced iron, charging the reduced iron and coal into a melt gasifier, and burning the coal with oxygen to burn the furnace.
- Manufacturing molten iron by melting the reduced iron; introducing gas discharged from the molten gasifier into a tar cracking furnace; and decomposing a tar component included in the gas in the tar cracking furnace.
- FIG. 1 is a view schematically showing a tar decomposition apparatus according to an embodiment of the present invention.
- the tar was decomposed gas is discharged through the gas conduit (9) from the top of the tar cracking furnace (6), the temperature is preferably maintained at a temperature of 700 ⁇ 800 ° C, which is the It adjusts by adjusting the ratio of oxygen and steam blown into the partial combustion furnace (2).
- the pores of the reduced iron packing layer inside the tar decomposition furnace 6 are blocked by dust included in a significant amount of generated carbon and the incoming gas, and the pore blockage becomes a certain level or more.
- the role of tar decomposition catalyst of reduced iron is very inferior.
- the lower part of the tar cracking furnace (6) is capable of discharging the reduced iron in the layer of reduced iron layer inside the tar cracking furnace (6) from atmospheric pressure to atmospheric pressure. 1 a uniform back pressure discharge device 10 and a transfer device 11 for transferring the discharged high-temperature reduced iron are provided.
- the high temperature reduced iron is supplied from the uniform back pressure charging device 8 so as to be discharged from the first uniform back pressure discharge device 10 to maintain a volume of the high temperature reduced iron layered layer inside the tar decomposition furnace 6, At the same time it also allows the voids to remain constant in the layer of layer of reduced iron.
- a differential pressure gauge 12 is provided above and below the tar cracking furnace 6 to monitor the pore level in the high-temperature reduced iron layered bed.
- FIG. 2 is a view schematically showing a molten iron manufacturing apparatus having a tar decomposition device according to an embodiment of the present invention.
- the molten iron manufacturing apparatus as shown in FIG. 2 can be comprised by applying the tar decomposition apparatus shown in FIG.
- the molten iron manufacturing apparatus 100 includes a reduction furnace 20 for reducing bulky ore, a charging device 25 for charging iron and coal discharged from the reduction furnace, and coal supplied from the charging device 25 for oxygen. And a molten gasifier 40 for melting molten reduced iron with its combustion heat to produce molten iron.
- the high-temperature reduced iron discharged from the tar cracking furnace (6) through the first equal back pressure discharge device (10) is transferred to the cooling device (13) by the transfer device (11) and then cooled to room temperature and then It is charged to the reduction furnace 20 together with the mass ore and reused as a raw material for manufacturing molten iron.
- the reducing gas discharged from the tar cracking furnace (6) is maintained at the 700 ⁇ 800 ° C level bar is supplied to the reduction furnace 20 through the reducing gas conduit 52 without additional cooling, part of the melting
- the reducing gas conduit 52 is supplied to the reduction furnace 20 through the reducing gas conduit 52 without additional cooling, part of the melting
- the pressure in the gasifier 40 is branched into a separate gas conduit 53, washed, cooled through the first collector device 55, and discharged to the outside.
- the tar cracking facility is configured outside the molten gasifier 40.
- the molten gasifier 40 is configured to have a tar cracking facility within the molten gasifier 40.
- Melt gasification of the molten iron manufacturing apparatus can have a volume of 30 to 40% compared to the 40 dome sub-volume. Therefore, the amount of combustion oxygen used to secure the temperature of the dome space is reduced, and it is possible to prevent loss due to thermal degradation of coal due to the high temperature of the dome space.
- FIG. 3 is a view schematically showing a molten iron manufacturing apparatus is provided with a tar decomposition device according to an embodiment of the present invention.
- the molten iron manufacturing apparatus 100 is a multi-stage reduction furnace 20 for reducing powdery iron-containing ore, a high-temperature compaction apparatus 36 for agglomeration of powdered reduced iron discharged from the multi-stage reduction furnace 20, and high temperature compaction. From the conveying apparatus 37 for conveying the high temperature reduced compacted material hardened by the apparatus 36, the charging apparatus 25 and the charging apparatus 25 which charges the high temperature reduced compacted material and coal conveyed to the conveying apparatus 37 The molten gasification furnace 40 which burns the coal supplied with oxygen, melts a silver reduced reducing mass, and produces molten iron as the heat of combustion.
- a part of the high temperature reducing substance is branched from the high temperature reducing compacted material conveying device 37 and the top cracking pressure of the upper part of the tar decomposition furnace 6 through the conveying device 7. It is transferred to the charging device (8).
- the high temperature reducing compacted material discharged from the tar cracking furnace (6) through the first equal back pressure discharge device (10) is conveyed by the conveying device (14) to the melt gasification furnace by the high temperature reducing compacted material conveying device (37). It is charged at 40 and used as a manufacturing raw material.
- the reducing gas discharged from the tar cracking furnace (6) is maintained at a 700 ⁇ 800 ° C level is supplied to the multi-stage reduction furnace 20 through the reducing gas conduit 52 without separate and cooling, some of the In order to maintain the pressure in the melt gasifier 40 at a predetermined level, it is branched into a separate gas conduit 53, washed, cooled through the first collector device 55, and discharged to the outside.
- FIG. 4 is a view showing experimental results of measuring changes in gas amount, temperature, and composition at the front and rear ends of a tar decomposition apparatus according to an embodiment of the present invention.
- the tar cracking is performed at a lower temperature than in the prior art by using a reduced iron catalyst.
- the gas discharged from the cracking unit (2) can be seen in the table in FIG . As can be seen, it can be directly supplied to the reduction furnace at about 775 ° C without additional temperature adjustment.
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Manufacturing & Machinery (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Waste-Gas Treatment And Other Accessory Devices For Furnaces (AREA)
- Manufacture Of Iron (AREA)
- Vertical, Hearth, Or Arc Furnaces (AREA)
Abstract
Description
Claims
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP16844556.7A EP3348654A1 (en) | 2015-09-08 | 2016-06-07 | Apparatus for decomposing tar, apparatus for producing molten iron, and method for producing molten iron |
BR112018004576-4A BR112018004576B1 (pt) | 2015-09-08 | 2016-06-07 | Aparelho para fabricar ferro derretido, aparelho para decompor alcatrão e método de fabricação de ferro derretido |
CN201680052126.0A CN108026595A (zh) | 2015-09-08 | 2016-06-07 | 焦油分解装置、铁水制备装置及铁水制备方法 |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR10-2015-0127257 | 2015-09-08 | ||
KR1020150127257A KR101660696B1 (ko) | 2015-09-08 | 2015-09-08 | 타르 분해 장치, 용철 제조 장치 및 용철 제조 방법 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2017043736A1 true WO2017043736A1 (ko) | 2017-03-16 |
Family
ID=57101334
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/KR2016/005997 WO2017043736A1 (ko) | 2015-09-08 | 2016-06-07 | 타르 분해 장치, 용철 제조 장치 및 용철 제조 방법 |
Country Status (5)
Country | Link |
---|---|
EP (1) | EP3348654A1 (ko) |
KR (1) | KR101660696B1 (ko) |
CN (1) | CN108026595A (ko) |
BR (1) | BR112018004576B1 (ko) |
WO (1) | WO2017043736A1 (ko) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR102083539B1 (ko) * | 2017-08-23 | 2020-04-23 | 주식회사 포스코 | 용선 제조 설비 및 용선 제조 방법 |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR100236186B1 (ko) * | 1997-08-28 | 1999-12-15 | 이구택 | 일반탄을 이용한 용철제조설비에 있어서 용융로 배가스내의 타르함량 저감장치 및 그 저감방법 |
KR20000042066A (ko) * | 1998-12-24 | 2000-07-15 | 이구택 | 용융선철제조장치 및 이를 이용한 용융선철제조방법 |
KR20090068681A (ko) * | 2007-12-24 | 2009-06-29 | 주식회사 포스코 | 용철제조장치 및 용철제조방법 |
JP2010017701A (ja) * | 2007-12-27 | 2010-01-28 | Nippon Steel Corp | タール含有ガスの改質方法 |
KR101128939B1 (ko) * | 2003-12-05 | 2012-03-28 | 지멘스 브이에이아이 메탈스 테크놀로지스 게엠베하 | 분상 또는 괴상의 일반탄 및 분상의 철함유 광석을 직접사용한 용철제조장치 및 그 용철제조방법과 이를 이용한일관제철장치 및 그 일관제철방법 |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR101187851B1 (ko) * | 2010-11-19 | 2012-10-04 | 주식회사 포스코 | 용철제조장치 및 이를 이용한 용철제조방법 |
AU2014223308A1 (en) * | 2013-03-01 | 2015-10-29 | John David Winter | Method and apparatus for processing carbonaceous material |
KR101550893B1 (ko) * | 2013-12-10 | 2015-09-18 | 주식회사 포스코 | 용철제조방법 및 용철제조장치 |
CN104212930B (zh) * | 2014-09-05 | 2016-06-22 | 钢研晟华工程技术有限公司 | 一种二步法冶炼铁水的baosherex炼铁工艺 |
-
2015
- 2015-09-08 KR KR1020150127257A patent/KR101660696B1/ko active IP Right Grant
-
2016
- 2016-06-07 WO PCT/KR2016/005997 patent/WO2017043736A1/ko active Application Filing
- 2016-06-07 EP EP16844556.7A patent/EP3348654A1/en not_active Withdrawn
- 2016-06-07 BR BR112018004576-4A patent/BR112018004576B1/pt active IP Right Grant
- 2016-06-07 CN CN201680052126.0A patent/CN108026595A/zh active Pending
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR100236186B1 (ko) * | 1997-08-28 | 1999-12-15 | 이구택 | 일반탄을 이용한 용철제조설비에 있어서 용융로 배가스내의 타르함량 저감장치 및 그 저감방법 |
KR20000042066A (ko) * | 1998-12-24 | 2000-07-15 | 이구택 | 용융선철제조장치 및 이를 이용한 용융선철제조방법 |
KR101128939B1 (ko) * | 2003-12-05 | 2012-03-28 | 지멘스 브이에이아이 메탈스 테크놀로지스 게엠베하 | 분상 또는 괴상의 일반탄 및 분상의 철함유 광석을 직접사용한 용철제조장치 및 그 용철제조방법과 이를 이용한일관제철장치 및 그 일관제철방법 |
KR20090068681A (ko) * | 2007-12-24 | 2009-06-29 | 주식회사 포스코 | 용철제조장치 및 용철제조방법 |
JP2010017701A (ja) * | 2007-12-27 | 2010-01-28 | Nippon Steel Corp | タール含有ガスの改質方法 |
Non-Patent Citations (1)
Title |
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See also references of EP3348654A4 * |
Also Published As
Publication number | Publication date |
---|---|
BR112018004576B1 (pt) | 2021-10-19 |
BR112018004576A2 (pt) | 2018-09-25 |
EP3348654A4 (en) | 2018-07-18 |
KR101660696B1 (ko) | 2016-09-28 |
CN108026595A (zh) | 2018-05-11 |
EP3348654A1 (en) | 2018-07-18 |
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