CN1182364C - 冷却熔炉中的气流的方法 - Google Patents
冷却熔炉中的气流的方法 Download PDFInfo
- Publication number
- CN1182364C CN1182364C CNB008080771A CN00808077A CN1182364C CN 1182364 C CN1182364 C CN 1182364C CN B008080771 A CNB008080771 A CN B008080771A CN 00808077 A CN00808077 A CN 00808077A CN 1182364 C CN1182364 C CN 1182364C
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- Prior art keywords
- smelting furnace
- flow
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- solid matter
- increased channel
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- Expired - Lifetime
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- 238000000034 method Methods 0.000 title claims abstract description 16
- 238000003723 Smelting Methods 0.000 title claims abstract description 12
- 238000005245 sintering Methods 0.000 claims abstract description 8
- 239000007787 solid Substances 0.000 claims abstract description 7
- 238000001816 cooling Methods 0.000 claims abstract description 5
- 239000007921 spray Substances 0.000 claims abstract description 4
- 239000007789 gas Substances 0.000 claims description 11
- 238000010891 electric arc Methods 0.000 claims description 8
- 239000002912 waste gas Substances 0.000 claims description 7
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 5
- 239000000498 cooling water Substances 0.000 claims 1
- 239000002245 particle Substances 0.000 abstract description 9
- 239000007788 liquid Substances 0.000 abstract 1
- 239000008187 granular material Substances 0.000 description 6
- 239000003500 flue dust Substances 0.000 description 5
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 4
- 239000012141 concentrate Substances 0.000 description 4
- 238000002844 melting Methods 0.000 description 4
- 230000008018 melting Effects 0.000 description 4
- 239000002893 slag Substances 0.000 description 4
- 239000000428 dust Substances 0.000 description 3
- 239000004071 soot Substances 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 238000004220 aggregation Methods 0.000 description 2
- 230000002776 aggregation Effects 0.000 description 2
- 230000004927 fusion Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 229910052759 nickel Inorganic materials 0.000 description 2
- 239000002918 waste heat Substances 0.000 description 2
- 239000000654 additive Substances 0.000 description 1
- 230000000996 additive effect Effects 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000012717 electrostatic precipitator Substances 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 239000010419 fine particle Substances 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000000155 melt Substances 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 239000013618 particulate matter Substances 0.000 description 1
- 238000007670 refining Methods 0.000 description 1
- 239000011343 solid material Substances 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
Images
Classifications
-
- 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
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27B—FURNACES, KILNS, OVENS, OR RETORTS IN GENERAL; OPEN SINTERING OR LIKE APPARATUS
- F27B3/00—Hearth-type furnaces, e.g. of reverberatory type; Tank furnaces
- F27B3/10—Details, accessories, or equipment peculiar to hearth-type furnaces
- F27B3/24—Cooling arrangements
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D47/00—Separating dispersed particles from gases, air or vapours by liquid as separating agent
- B01D47/06—Spray cleaning
-
- 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
- F27D17/001—Extraction of waste gases, collection of fumes and hoods used therefor
-
- 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
- F27D9/00—Cooling of furnaces or of charges therein
- F27D2009/0002—Cooling of furnaces
- F27D2009/001—Cooling of furnaces the cooling medium being a fluid other than a gas
- F27D2009/0013—Cooling of furnaces the cooling medium being a fluid other than a gas the fluid being water
- F27D2009/0016—Water-spray
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Environmental & Geological Engineering (AREA)
- Waste-Gas Treatment And Other Accessory Devices For Furnaces (AREA)
- Manufacture And Refinement Of Metals (AREA)
- Furnace Details (AREA)
- Vertical, Hearth, Or Arc Furnaces (AREA)
- Manufacture Of Iron (AREA)
Abstract
本发明涉及利用弥散喷液来冷却经过熔炉如闪速电弧炉的上升道排出的气体的方法，这种方法防止了气流所含的固体颗粒物熔合、烧结。
Description
本发明涉及利用弥散喷液来冷却由熔炉如闪速电弧炉的上升道排出的气流的方法，这种方法防止了气流所含的固体颗粒物熔合、烧结。
如众所周知的那样，闪速电弧炉由一个反应竖井、下部炉和上升道构成。要熔炼的精矿和添加剂被送入竖井中，它们在这里熔化并且沉淀到下部炉上，由此由精矿和造渣剂形成了至少有不纯金属和渣的层。在操作中形成和反应的排气在上升道中被排除，在这里，熔融液滴的最细小颗粒也会随气体而作为烟尘地流走。气体通常在设置于上升道后面的废热锅炉和静电除尘器中进行冷却和洗涤。废热锅炉散热部的作用是冷却气体，从而熔融颗粒凝固并且温度降低到颗粒烧结温度以下。从熔炉流出的气体也可以通过不同方式接受处理。
经闪速电弧炉的上升道流出的气体的温度为1300℃，这在一定程度上取决于熔炼的材料。通常，和废气一起流动的液滴会烧结成团并且粘附在炉壁上以及如从上升道到后处理设备的出口管道(所谓的上升道颈)上。从上升道颈上除去聚集物只能使用凿子或喷砂进行，这造成生产中断。
在某些情况下，如在闪速电弧熔炼镍的场合下，随废气一起流动的烟道颗粒是氧化性的，通常是铁或镍。在这种情况下，产生于闪速电弧炉中的烟尘的熔点可以上升到这样高的值，即在上升道外保持烟道颗粒是熔融的是不可行的，尽管该上升道的温度可以通过在那里燃烧附加燃料而略微提高一些。这导致了烟道颗粒尤其是在气体输出管道部聚集。
现在，我们已经研究出了一种方法来克服上述缺陷，即除去由烟尘颗粒形成的聚集并且该方法抑制了聚集形成并改变了聚集物的性质。根据该研制方法，来自熔炉的废气流及其所含的烟尘颗粒的温度在上升阶段内通过弥散喷液而被降低，从而颗粒既不会烧结，本身也不会附着在表面上，而是和气流一起流出熔炉。沉淀于上升道颈上的烟尘是如此易脆和细晶化，以至可以不用中断生产过程地轻易从输出管道中吹走它，本发明的实质特征将在后续权利要求书中变得一清二楚。
实际上，通过如借助径向喷嘴而由上升道壁炉内往炉子的上升道中喷射极细液滴而发生了烟尘冷却。要喷射的水量应该少到足以使其完全蒸发，从而即使一滴水也不会产生在熔液表面上的爆炸的危险。实践已经证明，当要喷射的水量为40-120kg/1000Nm3上升道气流时，可以获得烟尘颗粒的足够大的温降。
在示意附图1中，进一步地示出了本发明。
图1表示闪速电弧炉1，它由反应竖井2、下部炉3和上升道4构成。精矿、造渣剂、烟尘和反应气体通过在反应竖井上方的精矿烧嘴5被送入炉中。被送入反应竖井的固体材料熔化并且与载氧反应气体反应并相互反应。在下部炉中形成了至少两个熔融层，其中渣层6在上，不纯金属层7在下。反应所产生的废气通过上升道流向上升道颈8，最细小的熔融颗粒随气体一起流动。上升道装备有喷嘴9，通过所述喷嘴把水喷射到热气体中。这把熔融颗粒的温度明显降低到其熔点以下并最好是降低到其烧结温度以下。这样一来，气体被冷却到1000℃-1150℃。在上升道颈附近设置至少若干喷嘴并且这些喷嘴可以被布置成一层或按多层是有利的。喷射的结果就是，一些固体不纯颗粒物回落到在下部炉内的熔融物中并且一些颗粒物作为易碎颗粒地继续移向气体后处理装置。
Claims (8)
1.一种防止与熔炉废气流一起流动的粉末化固体物质在熔炉废气排出口和后处理设备中烧结的方法，其特征在于，在气体离开熔炉前，废气流在熔炉中被冷却，气流所含的固体物质被冷却到其熔点以下。
2.如权利要求1所述的方法，其特征在于，利用弥散喷水来冷却气流。
3.如权利要求1所述的方法，其特征在于，至少喷水的一部分位于废气排出口部位附近。
4.如权利要求1所述的方法，其特征在于，熔炉是闪速电弧炉。
5.如权利要求4所述的方法，其特征在于，气流在闪速电弧炉的上升道中接受冷却。
6.如权利要求1所述的方法，其特征在于，气流所含的固体物质被冷却到其烧结温度以下。
7.如权利要求1所述的方法，其特征在于，气流所含的固体物质被冷却到1000℃-1150℃。
8.如权利要求1所述的方法，其特征在于，要通过喷嘴喷射的冷却水量为40-120kg/1000Nm3上升道气流。
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FI991192 | 1999-05-26 | ||
| FI991192A FI111028B (fi) | 1999-05-26 | 1999-05-26 | Menetelmä sulatusuunin kaasuvirtauksen jäähdyttämiseksi |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1352738A CN1352738A (zh) | 2002-06-05 |
| CN1182364C true CN1182364C (zh) | 2004-12-29 |
Family
ID=8554734
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB008080771A Expired - Lifetime CN1182364C (zh) | 1999-05-26 | 2000-05-12 | 冷却熔炉中的气流的方法 |
Country Status (22)
| Country | Link |
|---|---|
| US (1) | US6547848B1 (zh) |
| EP (1) | EP1200788B1 (zh) |
| JP (1) | JP2003500631A (zh) |
| KR (1) | KR20020022051A (zh) |
| CN (1) | CN1182364C (zh) |
| AR (1) | AR024098A1 (zh) |
| AU (1) | AU773241B2 (zh) |
| BG (1) | BG64518B1 (zh) |
| BR (1) | BR0010875A (zh) |
| CA (1) | CA2374912A1 (zh) |
| DE (1) | DE60017410T2 (zh) |
| EA (1) | EA002997B1 (zh) |
| ES (1) | ES2235872T3 (zh) |
| FI (1) | FI111028B (zh) |
| MX (1) | MXPA01011687A (zh) |
| PE (1) | PE20010108A1 (zh) |
| PL (1) | PL351876A1 (zh) |
| PT (1) | PT1200788E (zh) |
| TR (1) | TR200103377T2 (zh) |
| WO (1) | WO2000073724A1 (zh) |
| YU (1) | YU83601A (zh) |
| ZA (1) | ZA200109324B (zh) |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FI110874B (fi) * | 2001-12-13 | 2003-04-15 | Outokumpu Oy | Menetelmä ja laitteisto metallurgisen sulatusuunin jätelämpökattilan kapasiteetin nostamiseksi |
| KR200313638Y1 (ko) * | 2003-02-08 | 2003-05-22 | 엄재수 | 치과기공용 교합기 |
| US6912150B2 (en) * | 2003-05-13 | 2005-06-28 | Lionel Portman | Reference current generator, and method of programming, adjusting and/or operating same |
| FI120158B (fi) * | 2007-12-17 | 2009-07-15 | Outotec Oyj | Menetelmä ja laitteisto suspensiosulatusuunin poistokaasujen käsittelemiseksi |
| FI20106156A (fi) * | 2010-11-04 | 2012-05-05 | Outotec Oyj | Menetelmä suspensiosulatusuunin lämpötaseen hallitsemiseksi ja suspensiosulatusuuni |
| CN102690919B (zh) * | 2012-06-01 | 2015-05-27 | 中国瑞林工程技术有限公司 | 一种铁的闪速冶金方法 |
Family Cites Families (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| IT961166B (it) * | 1972-05-10 | 1973-12-10 | Tecnochim Srl | Processo ed apparecchiatura per la depurazione di gas |
| US4183506A (en) * | 1977-09-21 | 1980-01-15 | Mitsui Engineering & Shipbuilding Co., Ltd. | Protective device for turbine driven by exhaust gas from blast furnace |
| US4235425A (en) * | 1979-07-16 | 1980-11-25 | Midrex Corporation | Impact bed gasifier-melter |
| US4294432A (en) * | 1980-06-02 | 1981-10-13 | Republic Steel Corporation | Method and apparatus for cooling BOF hood paneling |
| FI67030B (fi) * | 1981-06-26 | 1984-09-28 | Outokumpu Oy | Foerfarande och anordning foer rening av gaser innehaollandefasta och gasformiga foeroreningar |
| FI66199C (fi) * | 1982-02-12 | 1984-09-10 | Outokumpu Oy | Anordning foer separering av fasta och smaelta partiklar fraon metallurgiska ugnars avgaser samt saett att aotervinna bly fraon dylika avgaser |
| DE3208987A1 (de) | 1982-03-12 | 1983-10-27 | Metallgesellschaft Ag, 6000 Frankfurt | Verfahren zur nachverbrennung von brennbaren bestandteilen in abgasen von drehrohroefen |
| US4909160A (en) * | 1988-10-24 | 1990-03-20 | Eta Engineering, Inc. | Temperature-controlled exhaust particulate collection system for high temperature material processing facility |
| DE4240196C2 (de) * | 1992-11-30 | 1996-06-13 | Voest Alpine Ind Anlagen | Verfahren zur Kühlung und Reinigung von ultrafeine Partikel enthaltendem Gas, insbesondere Gichtgas oder Generatorgas und Vorrichtung zu seiner Durchführung |
-
1999
- 1999-05-26 FI FI991192A patent/FI111028B/fi not_active IP Right Cessation
-
2000
- 2000-05-12 EP EP00927278A patent/EP1200788B1/en not_active Expired - Lifetime
- 2000-05-12 TR TR2001/03377T patent/TR200103377T2/xx unknown
- 2000-05-12 CN CNB008080771A patent/CN1182364C/zh not_active Expired - Lifetime
- 2000-05-12 PT PT00927278T patent/PT1200788E/pt unknown
- 2000-05-12 JP JP2001500179A patent/JP2003500631A/ja not_active Withdrawn
- 2000-05-12 PL PL00351876A patent/PL351876A1/xx not_active Application Discontinuation
- 2000-05-12 AU AU45712/00A patent/AU773241B2/en not_active Ceased
- 2000-05-12 BR BR0010875-8A patent/BR0010875A/pt not_active IP Right Cessation
- 2000-05-12 KR KR1020017014966A patent/KR20020022051A/ko not_active Application Discontinuation
- 2000-05-12 EA EA200101242A patent/EA002997B1/ru not_active IP Right Cessation
- 2000-05-12 YU YU83601A patent/YU83601A/sh unknown
- 2000-05-12 DE DE60017410T patent/DE60017410T2/de not_active Expired - Fee Related
- 2000-05-12 CA CA002374912A patent/CA2374912A1/en not_active Abandoned
- 2000-05-12 US US09/979,452 patent/US6547848B1/en not_active Expired - Fee Related
- 2000-05-12 MX MXPA01011687A patent/MXPA01011687A/es unknown
- 2000-05-12 ES ES00927278T patent/ES2235872T3/es not_active Expired - Lifetime
- 2000-05-12 WO PCT/FI2000/000432 patent/WO2000073724A1/en not_active Application Discontinuation
- 2000-05-22 PE PE2000000483A patent/PE20010108A1/es not_active Application Discontinuation
- 2000-05-24 AR ARP000102547A patent/AR024098A1/es unknown
-
2001
- 2001-11-13 ZA ZA200109324A patent/ZA200109324B/xx unknown
- 2001-11-21 BG BG106130A patent/BG64518B1/bg unknown
Also Published As
| Publication number | Publication date |
|---|---|
| YU83601A (sh) | 2003-02-28 |
| EP1200788B1 (en) | 2005-01-12 |
| BG64518B1 (bg) | 2005-05-31 |
| EA200101242A1 (ru) | 2002-04-25 |
| FI991192A (fi) | 2000-11-27 |
| MXPA01011687A (es) | 2002-05-14 |
| EP1200788A1 (en) | 2002-05-02 |
| JP2003500631A (ja) | 2003-01-07 |
| EA002997B1 (ru) | 2002-12-26 |
| ES2235872T3 (es) | 2005-07-16 |
| AU773241B2 (en) | 2004-05-20 |
| PE20010108A1 (es) | 2001-03-09 |
| DE60017410T2 (de) | 2005-06-02 |
| BR0010875A (pt) | 2002-02-19 |
| DE60017410D1 (de) | 2005-02-17 |
| FI111028B (fi) | 2003-05-15 |
| PL351876A1 (en) | 2003-06-30 |
| PT1200788E (pt) | 2005-05-31 |
| AU4571200A (en) | 2000-12-18 |
| ZA200109324B (en) | 2002-09-25 |
| WO2000073724A1 (en) | 2000-12-07 |
| US6547848B1 (en) | 2003-04-15 |
| AR024098A1 (es) | 2002-09-04 |
| FI991192A0 (fi) | 1999-05-26 |
| KR20020022051A (ko) | 2002-03-23 |
| TR200103377T2 (tr) | 2002-04-22 |
| CA2374912A1 (en) | 2000-12-07 |
| BG106130A (en) | 2002-05-31 |
| CN1352738A (zh) | 2002-06-05 |
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