EP1346067A1 - Cooling system for a metallurgical smelting furnace - Google Patents
Cooling system for a metallurgical smelting furnaceInfo
- Publication number
- EP1346067A1 EP1346067A1 EP01270626A EP01270626A EP1346067A1 EP 1346067 A1 EP1346067 A1 EP 1346067A1 EP 01270626 A EP01270626 A EP 01270626A EP 01270626 A EP01270626 A EP 01270626A EP 1346067 A1 EP1346067 A1 EP 1346067A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- cooling
- cooling water
- cooling system
- melting furnace
- furnace
- 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
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21B—MANUFACTURE OF IRON OR STEEL
- C21B7/00—Blast furnaces
- C21B7/10—Cooling; Devices 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
- F27D1/00—Casings; Linings; Walls; Roofs
- F27D1/12—Casings; Linings; Walls; Roofs incorporating cooling arrangements
-
- 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
-
- 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
- F27B1/00—Shaft or like vertical or substantially vertical furnaces
- F27B1/10—Details, accessories, or equipment peculiar to furnaces of these types
- F27B1/24—Cooling arrangements
Definitions
- melting furnaces are still not cooled at all. This is the case, for example, for the bottom of an arc furnace as used in electrical steelworks.
- a cooling system according to the invention for a metallurgical melting furnace comprises at least one cooling element which is integrated in a furnace wall of the metallurgical melting furnace.
- the at least one cooling element has at least one internal cooling channel through which a predetermined cooling water volume flow flows, which ensures the required cooling capacity.
- the cooling system additionally comprises at least one storage tank for cooling water; and at least one cooling water pump which sucks the cooling water heated in the cooling element and pumps it back into the storage tank Pressure is less than the atmospheric pressure at the installation site of the metallurgical melting furnace, in other words, there is no excess pressure of the cooling water in relation to the ambient pressure in the at least one cooling element tet that in the event of a small leak in the cooling element, no cooling water can enter the melting furnace. Rather, it becomes ambient air or furnace gas sucked into the internal cooling channel of the cooling element due to the leak. Due to the suction of furnace gas, direct leakage monitoring can be carried out using gas detectors. This significantly improves the general safety for people and machines.
- the known disadvantages of a sprinkler cooling system are eliminated by the forced routing of the cooling water through internal cooling channels of the cooling elements.
- the cooling elements required for the cooling system according to the invention are also far more compact and cheaper to produce than splash water coolers.
- the cooling system according to the invention is suitable for metallurgical melting furnaces of both crucible and shaft type. It is possible to configure only part of the furnace cooling as a vacuum system.
- the furnace cooling in a particularly endangered area of a metallurgical melting furnace can be designed as a vacuum system according to the invention, but the rest of the furnace can be designed as a conventional pressure system.
- the cooling system according to the invention also has a flow tank for cooling water, which is arranged above the at least one cooling element and prevails in the atmospheric pressure.
- This flow tank supplies the at least one cooling element with cooling water and, due to its geodetic elevation, specifies the idle pressure or pre-pressure in the cooling circuit. It also forms an expansion tank for the cooling water.
- the static definition of the admission pressure largely prevents dangerous pressure fluctuations in the cooling system.
- the safety of the cooling system according to the invention is significantly improved compared to known vacuum cooling systems.
- a cooling system according to the invention it is possible, for example, to provide safe floor cooling for a metallurgical arc furnace.
- a cooling system according to the invention can also advantageously be used as a cover cooling system for such a metallurgical arc furnace.
- the cooling system according to the invention is advantageous, inter alia, for cooling the floor.
- the cooling system is normally designed as a closed circuit. This means that it has a recooling device and at least one cooling water pump. The latter sucks off the cooling water heated in the cooling element and pumps it back into the flow tank via the at least one recooling device.
- the cooling system it is also possible to operate the cooling system as an open cooling circuit, that is to supply the flow tank with fresh water and to discharge the warm return.
- this degassing container comprises a gas space above the cooling water and a vacuum pump for generating an atmospheric vacuum in this gas space.
- Solid cooling plates made of copper or cast iron can advantageously be used as cooling elements in a cooling system according to the invention.
- pipe panels and coils are not excluded in some areas of a melting furnace and are also particularly inexpensive.
- the reference numeral 24 designates a flow tank for cooling water which is arranged above the cooling water flow collector 12. This flow tank 24 is connected to the atmosphere via a ventilation line 25, so that atmospheric pressure prevails in the flow tank 24 above the cooling water.
- the cooling water can flow from the flow tank 24 into the lower-lying cooling water flow collector 12 via a flow line 26.
- An emptying line 27 enables the flow tank 24 to drain into a drain channel 28 if necessary.
- An overflow device 29 also opens into this drain line 27.
- Reference numeral 30 in FIG. 1 denotes a closed degassing container into which the cooling water flows from the return collector 14.
- a vacuum pump 32 is connected to this degassing container 30. The latter creates an atmospheric negative pressure in a gas space 33 above the cooling water.
- the degassing container 30 is divided by a partition 34 into a decanting basin 36 and a suction basin 38.
- the cooling water flows into the decanting basin 36 via a return line 40, a large part of the solid particles transported by the cooling water settling out in the decanting basin 36. Since the cooling water level in the degassing container 30 is slightly higher than the partition wall 34, the cooling water flows into the suction basin 38 and can flow into a suction line 42 here.
- the vacuum pump 32 can e.g. a jet pump operated with compressed air.
- Reference numeral 44 denotes a compressed air source (i.e. an air compressor or a compressed air distribution network) to which the jet pump 32 is connected for generating a jet of suction air.
- This suction air jet sucks a negative pressure in the degassing container 30.
- the outlet of the jet pump 42 can be connected by means of an exhaust air line 46 to a water separator 48, in which cooling water entrained in the degassing container 30 is separated from the exhaust air.
- This water separator 48 can e.g. Be arranged above the flow tank 24 so that the separated cooling water can be returned to the flow tank 24 by gravity through a line 50.
- the static absolute pressure should not be lower than kP D at any point in the cooling circuit 10, where k is a safety factor greater than i, and PD is the evaporation pressure of the cooling water at the maximum cooling water temperature. For example, one can assume that at a maximum return temperature of the cooling water of 40 ° C, the static absolute pressure should not be lower than 0.4 bar at any point in the cooling circuit.
- the reference number 70 in FIG. 1 denotes a gas detector which responds to furnace gases which collect in the gas circuit 33 of the degassing container 30 in the event of a leak in the cooling circuit 10. About this gas detector 70 of the O receives' fenbetreiber relatively quickly a reliable indication is that a leak formed in the cooling circuit 10 has.
- the vacuum pump 32 can optionally be dispensed with.
- Fig. 2 shows such a degassing tank 130. It is arranged a certain geodetic height H below the return collector 14 and connected to it via a return line 40 with low pressure drops, so that the static absolute pressure of the cooling water in the return line 40 rises sharply and in the return collector 14 is slightly greater than atmospheric pressure.
- the degassing of the degassing container 30 can consequently via a simple vent valve 132 to the atmosphere.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General 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)
- Furnace Details (AREA)
- Vertical, Hearth, Or Arc Furnaces (AREA)
- Processing Of Solid Wastes (AREA)
- Polyurethanes Or Polyureas (AREA)
- Feeding, Discharge, Calcimining, Fusing, And Gas-Generation Devices (AREA)
- Furnace Housings, Linings, Walls, And Ceilings (AREA)
- Carbon Steel Or Casting Steel Manufacturing (AREA)
Abstract
Description
Claims
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
LU90693A LU90693B1 (en) | 2000-12-11 | 2000-12-11 | Kuehlsystem fuer einen metallurgischen Schmelzofen |
LU90693 | 2000-12-11 | ||
PCT/EP2001/014540 WO2002048406A1 (en) | 2000-12-11 | 2001-12-11 | Cooling system for a metallurgical smelting furnace |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1346067A1 true EP1346067A1 (en) | 2003-09-24 |
EP1346067B1 EP1346067B1 (en) | 2004-11-24 |
Family
ID=19731955
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP01270626A Expired - Lifetime EP1346067B1 (en) | 2000-12-11 | 2001-12-11 | Cooling system for a metallurgical smelting furnace |
Country Status (7)
Country | Link |
---|---|
EP (1) | EP1346067B1 (en) |
CN (1) | CN1201020C (en) |
AT (1) | ATE283375T1 (en) |
AU (1) | AU2002216099A1 (en) |
DE (1) | DE50104637D1 (en) |
LU (1) | LU90693B1 (en) |
WO (1) | WO2002048406A1 (en) |
Families Citing this family (13)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20080305559A1 (en) * | 2005-12-15 | 2008-12-11 | Gualberto Gonzalez-Sapienza | Non-Competitive Immunoassays to Detect Small Molecules |
FI120850B (en) * | 2008-02-11 | 2010-03-31 | Outotec Oyj | Method and arrangement for measuring at least one physical quantity, such as temperature, flow, or pressure, of a cooling fluid flowing in a single cycle of a cooling element of a metallurgical furnace |
UA102520C2 (en) * | 2009-12-29 | 2013-07-25 | Украинский Государственный Научно-Технический Центр Технологии И Оборудования, Обработки Металлов, Защиты Окружающей Среды И Использования Вторичных Ресурсов Для Металлургии И Машиностроения "Энергосталь" | COOLING system OF METALLURGICAL UNIT |
UA102226C2 (en) * | 2009-12-29 | 2013-06-25 | Государственное Предприятие "Украинский Научно-Технический Центр Металлургической Промышленности "Энергосталь" | COOLING UNIT for steel assembly |
UA102519C2 (en) * | 2009-12-29 | 2013-07-25 | Государственное Предприятие "Украинский Научно-Технический Центр Металлурческой Промышленности "Энергосталь" | COOLING system OF METALLURGICAL UNIT |
RU2487947C1 (en) * | 2011-11-25 | 2013-07-20 | Общество С Ограниченной Ответственностью "Медногорский Медно-Серный Комбинат" | Method of cooling metallurgical furnace assemblies and device to this end |
CN104928446A (en) * | 2014-03-19 | 2015-09-23 | 宝山钢铁股份有限公司 | Furnace door multipath water supply device |
CN105716429B (en) * | 2016-03-21 | 2017-12-22 | 中国恩菲工程技术有限公司 | Cooling system |
CN107764046B (en) * | 2016-08-19 | 2019-07-16 | 郑州东方安彩耐火材料有限公司 | The cooling production method of refractory material of electric-arc furnace safety |
CN107869916A (en) * | 2017-12-27 | 2018-04-03 | 洛阳明创矿山冶金设备有限公司 | A kind of device for being easy to metallurgical equipment to cool |
LU500112B1 (en) * | 2021-04-30 | 2022-10-31 | Wurth Paul Sa | Cooling system of a metallurgical furnace |
CA3222827A1 (en) * | 2021-06-28 | 2023-01-05 | Safe Flow, Llc. | Emergency cooling-water vacuum system and method |
CN115627310A (en) * | 2022-11-09 | 2023-01-20 | 重庆钢铁股份有限公司 | Cooling device and method for responding to local temperature rise of side wall of blast furnace hearth |
Family Cites Families (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3966179A (en) * | 1974-07-18 | 1976-06-29 | Sergei Mikhailovich Andoniev | Apparatus for evaporative cooling of metallurgical plants |
JPS579808A (en) * | 1980-06-17 | 1982-01-19 | Nisshin Steel Co Ltd | Method and device for cooling furnace body with stave cooler |
EP0123168B1 (en) * | 1983-04-12 | 1987-03-18 | BBC Aktiengesellschaft Brown, Boveri & Cie. | Process and device for furnace cooling |
SU1749233A1 (en) * | 1990-09-12 | 1992-07-23 | Липецкий Филиал Государственного Союзного Института По Проектированию Металлургических Заводов | Emergency water supply system of blast furnace |
JP3702033B2 (en) * | 1996-04-19 | 2005-10-05 | 新日本製鐵株式会社 | Cooling structure of furnace body in melting furnace |
-
2000
- 2000-12-11 LU LU90693A patent/LU90693B1/en active
-
2001
- 2001-12-11 EP EP01270626A patent/EP1346067B1/en not_active Expired - Lifetime
- 2001-12-11 DE DE50104637T patent/DE50104637D1/en not_active Expired - Lifetime
- 2001-12-11 AU AU2002216099A patent/AU2002216099A1/en not_active Abandoned
- 2001-12-11 CN CN01820346.9A patent/CN1201020C/en not_active Expired - Fee Related
- 2001-12-11 WO PCT/EP2001/014540 patent/WO2002048406A1/en not_active Application Discontinuation
- 2001-12-11 AT AT01270626T patent/ATE283375T1/en active
Non-Patent Citations (1)
Title |
---|
See references of WO0248406A1 * |
Also Published As
Publication number | Publication date |
---|---|
DE50104637D1 (en) | 2004-12-30 |
EP1346067B1 (en) | 2004-11-24 |
ATE283375T1 (en) | 2004-12-15 |
WO2002048406A1 (en) | 2002-06-20 |
AU2002216099A1 (en) | 2002-06-24 |
LU90693B1 (en) | 2002-06-12 |
CN1201020C (en) | 2005-05-11 |
CN1479791A (en) | 2004-03-03 |
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