EP3810346A1 - Emulsionsumlaufanlage - Google Patents
EmulsionsumlaufanlageInfo
- Publication number
- EP3810346A1 EP3810346A1 EP19733443.6A EP19733443A EP3810346A1 EP 3810346 A1 EP3810346 A1 EP 3810346A1 EP 19733443 A EP19733443 A EP 19733443A EP 3810346 A1 EP3810346 A1 EP 3810346A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- lubricant
- coolant
- emulsion
- roll stand
- oil
- 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.)
- Withdrawn
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B45/00—Devices for surface or other treatment of work, specially combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills
- B21B45/02—Devices for surface or other treatment of work, specially combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills for lubricating, cooling, or cleaning
- B21B45/0269—Cleaning
- B21B45/029—Liquid recovering devices
- B21B45/0296—Recovering lubricants
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B45/00—Devices for surface or other treatment of work, specially combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills
- B21B45/02—Devices for surface or other treatment of work, specially combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills for lubricating, cooling, or cleaning
- B21B45/0269—Cleaning
- B21B45/029—Liquid recovering devices
- B21B45/0293—Recovering coolants
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B27/00—Rolls, roll alloys or roll fabrication; Lubricating, cooling or heating rolls while in use
- B21B27/06—Lubricating, cooling or heating rolls
- B21B27/10—Lubricating, cooling or heating rolls externally
- B21B2027/103—Lubricating, cooling or heating rolls externally cooling externally
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B27/00—Rolls, roll alloys or roll fabrication; Lubricating, cooling or heating rolls while in use
- B21B27/06—Lubricating, cooling or heating rolls
- B21B27/10—Lubricating, cooling or heating rolls externally
-
- 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
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/10—Greenhouse gas [GHG] capture, material saving, heat recovery or other energy efficient measures, e.g. motor control, characterised by manufacturing processes, e.g. for rolling metal or metal working
Definitions
- the invention relates to an emulsion circulation system for a roll stand with two rollers, in particular for cold rolling metal strip, in particular steel strip.
- the invention relates to a roll stand with such an emulsion circulation system and a method for operating the emulsion circulation system.
- the invention relates exclusively to applications in which emulsions are used both as coolants and as lubricants. This is particularly the case when rolling steel strip. Other applications in which pure kerosene or pure rolling oil, ie no emulsions, are used as lubricants are not the subject of the present invention.
- both the emulsion used for cooling and the emulsion used to lubricate the roll gap are collected centrally from a collecting trough located below the roll stand, mixed together and fed to a preparation. Because, as I said, the emulsion used to lubricate the roll gap is also collected in the common collecting pan, the oil content of the collected emulsion is relatively high. In the preparation of the emulsion, a certain proportion of oil is discharged that cannot be reused.
- non-recyclable oil is, for example, 3%; This corresponds to an oil loss or an oil discharge of non-reusable oil of 140 t per year on a cold rolling mill of the size mentioned.
- the object of the invention is to further develop a known emulsion circulation system, a known method for its operation and a known rolling stand with such an emulsion circulation system in such a way that the discharge of non-reusable oil is significantly reduced.
- Emulsion circulation system solved is characterized in that the lubrication device further comprises: a lubricant collecting trough and a second tank, fluidly connected thereto, for collecting the lubricant after its use; a lubricant preparation device for preparing the used lubricant from the second tank by separating a second oil phase and for supplying the prepared lubricant to the lubricant generation device and that the lubricant generation device is designed to also generate the lubricant on the basis of the prepared lubricant.
- the separate lubricant collecting trough provided according to the invention additionally and independently of the coolant collecting trough already known from the prior art offers the advantage that the lubricant, here in the form of a second emulsion, is collected essentially separately from the coolant and, after preparation, is reused can be. This is particularly advantageous against the background that the Lubricant, ie the second emulsion typically has a higher oil content than the coolant, ie the first emulsion.
- both the lubricant and the coolant are collected and processed separately after their use and are each reused. Because of or with the aid of this separation, it is possible, in particular, to significantly reduce the oil discharge from the coolant treatment device. After the treatment according to the invention, the conditioned coolant typically only has an oil content of k ⁇ 1%, whereas previously it was 2% ⁇ k ⁇ 5%. With the very large amount of coolant circulating, this reduction in oil discharge is considerable
- the coolant treatment device and the lubricant treatment device are basically of a similar design. Both treatment devices can each have a prefilter for skimming off oil phases floating on the used lubricant or coolant, a magnetic filter and / or a vacuum filter for reducing the oil content in the used lubricant or the used coolant.
- the two treatment devices differ significantly in their dimensions: While the coolant treatment device in a classic cold rolling mill is designed for several 10,000 liters, the lubricant according to the invention must
- Processing device in the same system can only be designed for a few 100 liters of lubricant. Furthermore, the two differ
- the lubricant spray nozzles are arranged on the inlet side of the roll stand for spraying the lubricant onto the work rolls and / or on the metal strip to be rolled, that the coolant spray nozzles are arranged on the outlet side of the roll stand for spraying on the there Coolant on the rollers of the roll stand, that the coolant collecting trough is arranged below the coolant nozzles, preferably under the roll stand, to collect the coolant after its use and that the lubricant collecting trough, which is designed separately according to the invention, is arranged on the inlet side of the roll stand in the region of the lower work roll to collect the lubricant after its use.
- This claimed separate arrangement of the individual components of the cooling device and the lubrication device on the two different sides of the roll stand advantageously enables the used lubricant and the used coolant to be collected and processed separately.
- the present invention does not prevent the discharge of oil by the vapor extraction and the passage of the metal strip wetted with oil through the roll gap, the invention advantageously brings about a significant reduction in the oil discharge due to the separate collection and treatment of the lubricant and the coolant.
- the coolant and lubricant were collected together and mixed together. Due to the higher oil content in the lubricant, the oil content in the mixture was also relatively high. In order to be able to use the mixture as a coolant again, it was necessary to remove a relatively large amount of oil during the preparation in order to bring the oil content back to below 1%, as is customary for coolants.
- the large amount of discharged, ie non-recyclable, oil was also obtained because the amount of coolant required is very large, for example several 10,000 I. Because of the separate collection of coolant and lubricant, the oil content in the present invention is separate Collected coolant from the outset much less than in the prior art, because it now no longer contains oil components of the lubricant. In order to process the same amount of coolant, only much less oil has to be discharged in the present invention than in the prior art. With the large amount of circulating coolant, the reduction in oil discharge is therefore considerable.
- FIG. 1 first shows the roll stand 200 with two work rolls 210, which span a roll gap for cold rolling metal strip, in particular steel strip.
- the work rolls are preferably supported by an upper and a lower backup roll.
- the emulsion circulation system 100 is arranged in the vicinity of the roll stand 200. This consists of a cooling device 110 and a lubricating device 120.
- coolant nozzles 114 On the outlet side of the roll stand there are coolant nozzles 114 for spraying the coolant K onto the rolls of the roll stand in order to cool them.
- a coolant collecting trough 116 is arranged below the roll stand for collecting the coolant K after it has been used.
- the coolant collecting trough is connected in a fluid-conducting manner to a coolant treatment device 118 for treating the used coolant from the coolant collecting trough 116 by separating a first oil phase 01 and by supplying fresh water.
- the coolant prepared in this way is collected in a first tank 112 and is then available for further use or further circulations. Specifically, this conditioned coolant is again supplied as coolant to the said coolant nozzles 114, in order to be used by them for cooling purposes the work rolls 210 to be sprayed on.
- the supply takes place by means of a pump 140 which is driven by a motor M.
- lubricant nozzles 122 are arranged on the inlet side of the roll stand for spraying the lubricant S onto the work rolls and / or onto the metal strip.
- the lubricant spray nozzles 122 are part of the lubrication device 120.
- this includes a lubricant generation device 130 for generating the lubricant S sprayed by the lubricant spray nozzles 122.
- the lubricant generation device 130 is produced from various sources with liquid components for generating the Lubricant fed.
- Said lubricant generation device 130 for generating the lubricant for the lubricant nozzles 122 consists in detail of the following components: A first mixing device 132 for mixing the processed coolant supplied by the coolant pump 140 from the first tank 112 with lubricant processed according to the invention in a lubricant preparation device 127 , A first intermediate emulsion Z1 is then available at the outlet of the first mixing device. This first intermediate emulsion Z1 is fed to a second mixing device 134 which, if necessary, mixes this first intermediate emulsion with fresh water, ie in particular with demineralized water from a fresh water tank 126 to form a second emulsion Z2.
- the second emulsion in turn is mixed with the aid of a third mixing device 136 in a suitable quantitative ratio with still unused rolling oil from a fresh oil tank 128 to form the ready-to-use lubricant S.
- the output or the outputs of the third mixing device 136 are connected in a fluid-conducting manner to the lubricant spray nozzles 122 in order to supply them with the lubricant S.
- the lubricant nozzles 122 can be housed or accommodated in a housing 119. The housing is possibly mounted on the inlet side of the roll stand 200.
- the bottom of this housing 119 is advantageously designed in the form of the lubricant collecting trough 125 and the roof of the housing 119 is preferably designed in the form of a further coolant collecting trough 117.
- the further coolant collecting trough 117 is used in particular to collect condensed coolant vapor, which has reached the input side from the output side of the roll stand.
- the housing 119 is typically an almost all-round closed box with openings only for the passage of the metal strip and for the supply and discharge of the lubricant and for spraying the lubricant onto the work rolls. The housing is therefore open towards the work rolls.
- vapor extraction devices 230 are advantageously provided for extracting the air / haze contaminated with lubricant and coolant in the vicinity of the roll stand 200 the oil components contained in it are therefore irretrievably discharged.
- the lubricant collected by the lubricant collecting trough 125 on the inlet side of the roll stand is conducted, for example with the aid of a connecting line 123, into a second tank 124 and collected there.
- the used lubricant collected there is processed according to the invention with the aid of the lubricant preparation device 127.
- the lubricant preparation device 127 advantageously has a pre-filter I for skimming or skimming off a second oil phase 02 from the surface of the used lubricant in the second tank 124, a magnetic filter II for discharging further oil components from the used lubricant and / or preferably also a vacuum filter III for discharging even more oil from the used lubricant.
- the filters I, II, III mentioned are preferably connected to one another in a fluid-conducting manner.
- the used lubricant prepared in this way is fed according to the invention to the first mixing device 132 in the lubricant generation device 130 in order to be mixed by the first mixing device with the prepared coolant to form the first intermediate emulsion Z1.
- the used coolant from the coolant collecting trough 116 is processed with the aid of a coolant treatment device 118; this is basically constructed in the same way as said lubricant treatment device 127.
- the coolant treatment device 118 according to FIG. 2 can also have a pre-filter I, a magnetic filter II and a vacuum filter III for treating the used coolant by discharging oil components.
- the filters I, II, III mentioned are preferably connected to one another in a fluid-conducting manner.
- the coolant prepared in this way is then fed to the first tank 112, where it is available for reuse, if necessary after the supply of fresh water. As can be seen from FIG.
- this conditioned coolant from the first tank 112 can be used with the aid of the coolant pump 140 either directly as a coolant for the coolant nozzles 114 or as a base material for the lubricant S of the lubricant generating device 130, and in particular the first mixing device 132 for mixing with the conditioned one Lubricants are supplied.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Metal Rolling (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102018209854.9A DE102018209854A1 (de) | 2018-06-19 | 2018-06-19 | Emulsionsumlaufanlage |
| PCT/EP2019/066292 WO2019243468A1 (de) | 2018-06-19 | 2019-06-19 | Emulsionsumlaufanlage |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| EP3810346A1 true EP3810346A1 (de) | 2021-04-28 |
Family
ID=67060390
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP19733443.6A Withdrawn EP3810346A1 (de) | 2018-06-19 | 2019-06-19 | Emulsionsumlaufanlage |
Country Status (4)
| Country | Link |
|---|---|
| EP (1) | EP3810346A1 (de) |
| JP (1) | JP2021527570A (de) |
| DE (1) | DE102018209854A1 (de) |
| WO (1) | WO2019243468A1 (de) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114768375A (zh) * | 2022-05-21 | 2022-07-22 | 佛山市瑞丰恒业机械有限公司 | 一种针对锂电池壳加工的乳化液过滤循环系统 |
| CN117299837B (zh) * | 2023-11-17 | 2025-08-29 | 中冶赛迪工程技术股份有限公司 | 轧机的油、水供给系统 |
Family Cites Families (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5930417A (ja) * | 1982-08-10 | 1984-02-18 | Kawasaki Steel Corp | 冷間圧延油の供給方法 |
| GB2126507B (en) * | 1982-09-02 | 1985-07-31 | Sumitomo Metal Ind | Method for producing clean cold strip |
| JPS63177908A (ja) * | 1987-01-16 | 1988-07-22 | Nippon Steel Corp | 冷間圧延におけるロ−ル冷却方法 |
| DE3835460A1 (de) * | 1988-10-18 | 1990-04-19 | Schloemann Siemag Ag | Verfahren und vorrichtung zur kuehlung und schmierung spanlos umgeformter metalle, insbesondere zur kuehlung und schmierung von walzen und walzgut beim kaltwalzen in einem walzgeruest |
| JPH05237537A (ja) * | 1992-02-26 | 1993-09-17 | Sumitomo Metal Ind Ltd | 表面清浄度の優れた冷延鋼帯の製造方法 |
| JPH067809A (ja) * | 1992-06-25 | 1994-01-18 | Kawasaki Steel Corp | 高潤滑対応圧延機 |
| JPH09239429A (ja) * | 1996-03-05 | 1997-09-16 | Hitachi Ltd | 冷間圧延機および冷間圧延方法 |
| JP3315906B2 (ja) * | 1997-10-16 | 2002-08-19 | 株式会社日立製作所 | 熱間圧延設備及び熱間圧延機の潤滑方法 |
| JP2003136112A (ja) * | 2001-10-31 | 2003-05-14 | Nisshin Steel Co Ltd | 圧延機クーラントの清浄方法および装置 |
| JP2005305473A (ja) * | 2004-04-19 | 2005-11-04 | Nisshin Steel Co Ltd | 冷間圧延における循環式圧延液供給方法 |
| CN101596557B (zh) * | 2008-06-06 | 2010-11-17 | 湖南华菱涟源钢铁有限公司 | 热轧带钢轧制工艺用润滑装置 |
| JP5640342B2 (ja) * | 2009-09-04 | 2014-12-17 | Jfeスチール株式会社 | 冷間圧延における潤滑油供給方法および冷間圧延機ならびに冷延鋼板の製造方法 |
| EP2623223A1 (de) * | 2012-02-01 | 2013-08-07 | Siemens Aktiengesellschaft | Reinigungsvorrichtung und Verfahren zum Entfernen eines Schmiermittels von den Walzen eines Walzgerüstes |
-
2018
- 2018-06-19 DE DE102018209854.9A patent/DE102018209854A1/de not_active Withdrawn
-
2019
- 2019-06-19 JP JP2020570946A patent/JP2021527570A/ja not_active Ceased
- 2019-06-19 EP EP19733443.6A patent/EP3810346A1/de not_active Withdrawn
- 2019-06-19 WO PCT/EP2019/066292 patent/WO2019243468A1/de not_active Ceased
Also Published As
| Publication number | Publication date |
|---|---|
| DE102018209854A1 (de) | 2019-12-19 |
| JP2021527570A (ja) | 2021-10-14 |
| WO2019243468A1 (de) | 2019-12-26 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| EP0367967B1 (de) | Verfahren und Vorrichtung zur Kühlung und Schmierung von Walzen und Walzgut beim Kaltwalzen | |
| EP0076871A1 (de) | Vorrichtung und Verfahren zur kontinuierlichen Fest-Flüssig-Extraktion | |
| DE2545070A1 (de) | Verfahren und vorrichtung zur raffination benuetzter oele | |
| DE3004545C2 (de) | Kondensator zum Ausscheiden von Feststoffen aus einem Dampf-Gas-Gemisch und aus Trüben bei der Gewinnung von Metallchloriden aus Seltenen Erden, sowie von Titanchlorid und begleitenden Metallchloriden durch Chlorierung der Ausgangsmaterialien | |
| WO2019243468A1 (de) | Emulsionsumlaufanlage | |
| DE2244175A1 (de) | Verfahren zur aufbereitung von oel, das zur kaltbereitung von metall verwendet wird | |
| DE4002161C2 (de) | ||
| DE2911272C2 (de) | Verfahren und Vorrichtung zum Aufbereiten eines in einem Kernkraftwerk anfallenden radioaktiven Abwassers | |
| DE19946391A1 (de) | Verfahren zum Reinigen von Kühlschmierstoffen | |
| DE2330200A1 (de) | Verfahren zum trennen von oel, schwebeteilchen od. dgl. aus emulsionen oder dispersionen | |
| DE3939222C1 (de) | ||
| DE4312426C2 (de) | Verfahren zur Behandlung von Prozeßabwässern einer Ultrafiltrationsanlage | |
| DE9207241U1 (de) | Einrichtung zur Abluftreinigung | |
| EP0968040A1 (de) | Verfahren zum reinigen flüssiger kühlschmierstoffe | |
| EP2078609B1 (de) | Dezentrales Reinigungssystem | |
| EP0691149B1 (de) | Verfahren zum Trennen einer Öl/Wasser-Vermengung | |
| AT397213B (de) | Verfahren und anlage zur rückgewinnung von feststoffen | |
| DE2507270C3 (de) | Verfahren zum Aufbereiten von durch bis zu 40 % Wasser und Feststoffe verunreinigten Schmierölen | |
| DE4230780C2 (de) | Verfahren und Vorrichtung zur Aufbereitung wässriger Reststoffe | |
| WO2015181073A1 (de) | Verfahren und vorrichtung zum erzeugen eines kühlschmierstoffgemischs, umformwerk zum umformen von halbzeugen und verwendung eines kühlschmierstoffgemischs | |
| DE2743055A1 (de) | Einrichtung zur reinigung von schmier- und/oder kuehlemulsionen | |
| DE60018086T2 (de) | Vorrichtung zur Reinigung von Bearbeitungsflüssigkeiten in einer Funkenerosionsmaschine | |
| DE69619201T2 (de) | Verfahren zur schmierung von mechnanischen teilen und einrichtungen zur durchführung des verfahrens | |
| DE1594398C (de) | ||
| DE910572C (de) | Verfahren und Vorrichtung zur Klaerung von schmierenden Kuehlmitteln |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: UNKNOWN |
|
| STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: THE INTERNATIONAL PUBLICATION HAS BEEN MADE |
|
| PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
Free format text: ORIGINAL CODE: 0009012 |
|
| STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: REQUEST FOR EXAMINATION WAS MADE |
|
| 17P | Request for examination filed |
Effective date: 20210119 |
|
| AK | Designated contracting states |
Kind code of ref document: A1 Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR |
|
| AX | Request for extension of the european patent |
Extension state: BA ME |
|
| DAV | Request for validation of the european patent (deleted) | ||
| DAX | Request for extension of the european patent (deleted) | ||
| GRAP | Despatch of communication of intention to grant a patent |
Free format text: ORIGINAL CODE: EPIDOSNIGR1 |
|
| STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: GRANT OF PATENT IS INTENDED |
|
| INTG | Intention to grant announced |
Effective date: 20220520 |
|
| STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: THE APPLICATION HAS BEEN WITHDRAWN |
|
| 18W | Application withdrawn |
Effective date: 20220720 |