SE524469C2 - Sätta vid rening av olja från förorenande partiklar i en centrifugalseparator - Google Patents
Sätta vid rening av olja från förorenande partiklar i en centrifugalseparatorInfo
- Publication number
- SE524469C2 SE524469C2 SE0203699A SE0203699A SE524469C2 SE 524469 C2 SE524469 C2 SE 524469C2 SE 0203699 A SE0203699 A SE 0203699A SE 0203699 A SE0203699 A SE 0203699A SE 524469 C2 SE524469 C2 SE 524469C2
- Authority
- SE
- Sweden
- Prior art keywords
- oil
- separation
- particles
- purified
- aid
- Prior art date
Links
- 239000002245 particle Substances 0.000 title claims abstract description 25
- 238000004140 cleaning Methods 0.000 title 1
- 238000000926 separation method Methods 0.000 claims abstract description 48
- 239000003921 oil Substances 0.000 claims description 46
- 229920000642 polymer Polymers 0.000 claims description 18
- 238000000034 method Methods 0.000 claims description 8
- 239000002480 mineral oil Substances 0.000 claims description 8
- 235000010446 mineral oil Nutrition 0.000 claims description 5
- 239000004071 soot Substances 0.000 claims description 5
- 238000004804 winding Methods 0.000 claims description 4
- 239000003795 chemical substances by application Substances 0.000 claims description 3
- 239000000654 additive Substances 0.000 claims description 2
- 239000003112 inhibitor Substances 0.000 claims description 2
- 230000003647 oxidation Effects 0.000 claims description 2
- 238000007254 oxidation reaction Methods 0.000 claims description 2
- 239000007788 liquid Substances 0.000 abstract description 13
- 238000000746 purification Methods 0.000 abstract description 10
- 235000019198 oils Nutrition 0.000 description 39
- 239000012071 phase Substances 0.000 description 5
- 239000000356 contaminant Substances 0.000 description 4
- 239000000203 mixture Substances 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 3
- 239000000126 substance Substances 0.000 description 3
- 238000005119 centrifugation Methods 0.000 description 2
- 239000012535 impurity Substances 0.000 description 2
- 239000002923 metal particle Substances 0.000 description 2
- 239000010731 rolling oil Substances 0.000 description 2
- 238000004062 sedimentation Methods 0.000 description 2
- 239000005909 Kieselgur Substances 0.000 description 1
- 239000005662 Paraffin oil Substances 0.000 description 1
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 1
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 description 1
- 238000005054 agglomeration Methods 0.000 description 1
- 230000002776 aggregation Effects 0.000 description 1
- 239000010775 animal oil Substances 0.000 description 1
- 239000008346 aqueous phase Substances 0.000 description 1
- 238000004061 bleaching Methods 0.000 description 1
- 239000000701 coagulant Substances 0.000 description 1
- 238000000151 deposition Methods 0.000 description 1
- 238000004821 distillation Methods 0.000 description 1
- 239000003792 electrolyte Substances 0.000 description 1
- 238000005189 flocculation Methods 0.000 description 1
- 230000016615 flocculation Effects 0.000 description 1
- 239000010720 hydraulic oil Substances 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 150000002576 ketones Chemical class 0.000 description 1
- 239000010687 lubricating oil Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 150000007522 mineralic acids Chemical class 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 150000007524 organic acids Chemical class 0.000 description 1
- 229920002959 polymer blend Polymers 0.000 description 1
- 238000011403 purification operation Methods 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 239000010802 sludge Substances 0.000 description 1
- 235000015112 vegetable and seed oil Nutrition 0.000 description 1
- 239000008158 vegetable oil Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
- C10M175/00—Working-up used lubricants to recover useful products ; Cleaning
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10G—CRACKING HYDROCARBON OILS; PRODUCTION OF LIQUID HYDROCARBON MIXTURES, e.g. BY DESTRUCTIVE HYDROGENATION, OLIGOMERISATION, POLYMERISATION; RECOVERY OF HYDROCARBON OILS FROM OIL-SHALE, OIL-SAND, OR GASES; REFINING MIXTURES MAINLY CONSISTING OF HYDROCARBONS; REFORMING OF NAPHTHA; MINERAL WAXES
- C10G31/00—Refining of hydrocarbon oils, in the absence of hydrogen, by methods not otherwise provided for
- C10G31/10—Refining of hydrocarbon oils, in the absence of hydrogen, by methods not otherwise provided for with the aid of centrifugal force
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B04—CENTRIFUGAL APPARATUS OR MACHINES FOR CARRYING-OUT PHYSICAL OR CHEMICAL PROCESSES
- B04B—CENTRIFUGES
- B04B1/00—Centrifuges with rotary bowls provided with solid jackets for separating predominantly liquid mixtures with or without solid particles
- B04B1/04—Centrifuges with rotary bowls provided with solid jackets for separating predominantly liquid mixtures with or without solid particles with inserted separating walls
- B04B1/08—Centrifuges with rotary bowls provided with solid jackets for separating predominantly liquid mixtures with or without solid particles with inserted separating walls of conical shape
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
- C10M175/00—Working-up used lubricants to recover useful products ; Cleaning
- C10M175/0008—Working-up used lubricants to recover useful products ; Cleaning with the use of adsorbentia
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
- C10M175/00—Working-up used lubricants to recover useful products ; Cleaning
- C10M175/0058—Working-up used lubricants to recover useful products ; Cleaning by filtration and centrifugation processes; apparatus therefor
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
- C10M175/00—Working-up used lubricants to recover useful products ; Cleaning
- C10M175/02—Working-up used lubricants to recover useful products ; Cleaning mineral-oil based
-
- 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
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10S494/00—Imperforate bowl: centrifugal separators
- Y10S494/901—Imperforate bowl: centrifugal separators involving mixture containing oil
Landscapes
- Chemical & Material Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Combustion & Propulsion (AREA)
- Centrifugal Separators (AREA)
- Lubricants (AREA)
- Extraction Or Liquid Replacement (AREA)
- Fats And Perfumes (AREA)
- Production Of Liquid Hydrocarbon Mixture For Refining Petroleum (AREA)
Priority Applications (13)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| SE0203699A SE524469C2 (sv) | 2002-12-12 | 2002-12-12 | Sätta vid rening av olja från förorenande partiklar i en centrifugalseparator |
| AU2003302920A AU2003302920A1 (en) | 2002-12-12 | 2003-12-10 | A method of purifying contaminated oil from particles suspended in the oil in a centnrifugal separator |
| PCT/SE2003/001925 WO2004053035A1 (en) | 2002-12-12 | 2003-12-10 | A method of purifying contaminated oil from particles suspended in the oil in a centnrifugal separator |
| AT03812745T ATE438700T1 (de) | 2002-12-12 | 2003-12-10 | Verfahren zur reinigung von kontaminiertem öl durch abtrennung von in dem öl suspendierten teilchen in einem zentrifugalabscheider |
| CNB2003801058461A CN100354400C (zh) | 2002-12-12 | 2003-12-10 | 在离心分离器中分离油中悬浮的颗粒而提纯污染油的方法 |
| DE60328710T DE60328710D1 (de) | 2002-12-12 | 2003-12-10 | Verfahren zur reinigung von kontaminiertem öl durch abtrennung von in dem öl suspendierten teilchen in einem zentrifugalabscheider |
| KR1020057010501A KR101066748B1 (ko) | 2002-12-12 | 2003-12-10 | 원심 분리기에서 오일 내의 현탁 입자들로부터 오염된오일을 정화하는 방법 |
| DK03812745T DK1570036T3 (da) | 2002-12-12 | 2003-12-10 | Fremgangsmåde til rensning af kontamineret olie fra i olien suspenderede oartikler i en centrifugalseparator |
| JP2004558969A JP4620470B2 (ja) | 2002-12-12 | 2003-12-10 | 遠心分離器内の油内に浮遊している粒子を汚濁した油から取り除く方法 |
| US10/538,295 US7410456B2 (en) | 2002-12-12 | 2003-12-10 | Method of purifying contaminated oil in a centrifugal separator using a separation aid and starting liquid |
| EP03812745A EP1570036B1 (de) | 2002-12-12 | 2003-12-10 | Verfahren zur reinigung von kontaminiertem öl durch abtrennung von in dem öl suspendierten teilchen in einem zentrifugalabscheider |
| RU2005121899/04A RU2330873C2 (ru) | 2002-12-12 | 2003-12-10 | Способ очистки загрязненного взвешенными частичками масла в центробежном сепараторе |
| JP2010189768A JP5139484B2 (ja) | 2002-12-12 | 2010-08-26 | 遠心分離機内の油内に浮遊している粒子を汚濁した油から取り除く方法 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| SE0203699A SE524469C2 (sv) | 2002-12-12 | 2002-12-12 | Sätta vid rening av olja från förorenande partiklar i en centrifugalseparator |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| SE0203699D0 SE0203699D0 (sv) | 2002-12-12 |
| SE0203699L SE0203699L (sv) | 2004-06-13 |
| SE524469C2 true SE524469C2 (sv) | 2004-08-10 |
Family
ID=20289858
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| SE0203699A SE524469C2 (sv) | 2002-12-12 | 2002-12-12 | Sätta vid rening av olja från förorenande partiklar i en centrifugalseparator |
Country Status (12)
| Country | Link |
|---|---|
| US (1) | US7410456B2 (de) |
| EP (1) | EP1570036B1 (de) |
| JP (2) | JP4620470B2 (de) |
| KR (1) | KR101066748B1 (de) |
| CN (1) | CN100354400C (de) |
| AT (1) | ATE438700T1 (de) |
| AU (1) | AU2003302920A1 (de) |
| DE (1) | DE60328710D1 (de) |
| DK (1) | DK1570036T3 (de) |
| RU (1) | RU2330873C2 (de) |
| SE (1) | SE524469C2 (de) |
| WO (1) | WO2004053035A1 (de) |
Families Citing this family (24)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SE524469C2 (sv) * | 2002-12-12 | 2004-08-10 | Alfa Laval Corp Ab | Sätta vid rening av olja från förorenande partiklar i en centrifugalseparator |
| SE0401291D0 (sv) * | 2004-05-17 | 2004-05-17 | Systemseparation Sweden Ab | Process for the purification of spent process oil |
| SE531141C2 (sv) * | 2007-05-10 | 2009-01-07 | Alfa Laval Corp Ab | Centrifugalseparator med transportörgänga som förhindrar avskiljda partiklar att täppa till rotorns insida |
| CN100594367C (zh) * | 2007-05-18 | 2010-03-17 | 洛阳Lyc轴承有限公司 | 一种失效润滑脂机械杂质分离方法 |
| RU2417126C2 (ru) * | 2009-06-18 | 2011-04-27 | Государственное образовательное учреждение высшего профессионального образования "Оренбургский государственный университет" | Центробежный сепаратор-очиститель |
| GB2487967A (en) * | 2011-02-11 | 2012-08-15 | Michael Taylor | Removing particles from oil |
| CN103131454B (zh) * | 2011-11-22 | 2016-03-09 | 宝路特科技(北京)有限公司 | 一种从油砂中通过溶剂抽提沥青的方法 |
| EP2679657B1 (de) | 2012-06-27 | 2016-01-06 | Alfa Laval Corporate AB | Verfahren zum abscheiden von katalysatorfeinteilen aus einem ölstrom |
| RU2505360C1 (ru) * | 2012-07-26 | 2014-01-27 | Федеральное государственное бюджетное образовательное учреждение высшего профессионального образования "Оренбургский государственный университет" | Центробежный сепаратор-очиститель |
| EP2712912A1 (de) * | 2012-09-27 | 2014-04-02 | Alfa Laval Corporate AB | Kontinuierliche Reinigung von Motorölen |
| US20140257008A1 (en) * | 2013-03-07 | 2014-09-11 | Verolube, Inc. | Method and apparatus for recovering synthetic oils from composite oil streams |
| EP2883947B1 (de) | 2013-12-10 | 2019-08-07 | Alfa Laval Corporate AB | Kontinuierliche Reinigung von Motorölen mit einem Dreiphasenabscheider |
| CN104338618B (zh) * | 2014-09-16 | 2017-01-25 | 上海平延机械科技有限公司 | 一种碟式离心机内部流道结构 |
| EP3339405A1 (de) | 2016-12-20 | 2018-06-27 | Alfa Laval Corporate AB | Abtrennung von verunreinigungen aus einem flüssigen gemisch |
| CN107185737A (zh) * | 2017-05-27 | 2017-09-22 | 宜兴市华鼎机械有限公司 | 一种可消除气泡的碟式离心机 |
| DE102017128027A1 (de) * | 2017-11-27 | 2019-05-29 | Gea Mechanical Equipment Gmbh | Separator |
| CN109652195A (zh) * | 2018-11-14 | 2019-04-19 | 山东源根石油化工有限公司 | 一种润滑油的净化回收方法 |
| KR102685054B1 (ko) * | 2019-02-26 | 2024-07-16 | 게아 미케니컬 이큅먼트 게엠베하 | 분리기 |
| US10947469B2 (en) * | 2019-05-13 | 2021-03-16 | James Chun Koh | Apparatus and method for manufacturing bio emulsion fuel using vegetable oil |
| CN111826229B (zh) * | 2020-07-31 | 2023-06-02 | 慈溪市四海轴承有限公司 | 一种超精油清洁提纯工艺及其处理设备 |
| CN111793522B (zh) * | 2020-08-03 | 2024-04-09 | 内蒙古农业大学 | 一种食用亚麻籽油萃取脱苦分离机 |
| US11879100B2 (en) | 2022-04-28 | 2024-01-23 | Baker Hughes Oilfield Operations Llc | Removing catalyst fines from heavy oils |
| EP4619127A1 (de) | 2022-11-14 | 2025-09-24 | SKF Recondoil AB | Verfahren und system zur reinigung von kontaminiertem öl |
| CN117865282B (zh) * | 2024-03-13 | 2024-05-14 | 成都天府智慧大厨房科技有限责任公司 | 一种厨余垃圾油水分离装置 |
Family Cites Families (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3960319A (en) * | 1974-10-21 | 1976-06-01 | Kobe Inc. | Centrifugal separator |
| JPS601294A (ja) * | 1983-06-17 | 1985-01-07 | Idemitsu Kosan Co Ltd | 廃油の再生処理方法 |
| SE440487B (sv) * | 1983-12-21 | 1985-08-05 | Alfa Laval Marine Power Eng | Anordning vid centrifugalseparator |
| SE8405015D0 (sv) * | 1984-10-08 | 1984-10-08 | Alfa Laval Separation Ab | Centrifugalseparator |
| SE448150B (sv) | 1985-06-07 | 1987-01-26 | Alfa Laval Separation Ab | Centrifugalseparator |
| SE458507B (sv) * | 1987-06-24 | 1989-04-10 | Alfa Laval Marine Power Eng | Foerfarande vid drift av en centrifugalseparator samt centrifugalseparator foer genomfoerande av foerfarandet |
| JP2554908B2 (ja) * | 1988-01-21 | 1996-11-20 | 三菱化工機株式会社 | 遠心分離機の運転方法 |
| CN1018405B (zh) * | 1988-12-24 | 1992-09-23 | 三星电管株式会社 | 阴极射线管芯柱保护座 |
| SE512750C2 (sv) * | 1993-11-29 | 2000-05-08 | Alfa Laval Separation Ab | Metod för gravimetrisk separation av olja som förorenats med partiklar och eller vatten |
| SE514774C2 (sv) * | 1998-12-21 | 2001-04-23 | Alfa Laval Ab | Reglerutrustning för centrifugalseparator samt sätt att reglera en separeringsoperation |
| SE524469C2 (sv) * | 2002-12-12 | 2004-08-10 | Alfa Laval Corp Ab | Sätta vid rening av olja från förorenande partiklar i en centrifugalseparator |
-
2002
- 2002-12-12 SE SE0203699A patent/SE524469C2/sv not_active IP Right Cessation
-
2003
- 2003-12-10 DK DK03812745T patent/DK1570036T3/da active
- 2003-12-10 AU AU2003302920A patent/AU2003302920A1/en not_active Abandoned
- 2003-12-10 RU RU2005121899/04A patent/RU2330873C2/ru not_active IP Right Cessation
- 2003-12-10 EP EP03812745A patent/EP1570036B1/de not_active Expired - Lifetime
- 2003-12-10 WO PCT/SE2003/001925 patent/WO2004053035A1/en not_active Ceased
- 2003-12-10 KR KR1020057010501A patent/KR101066748B1/ko not_active Expired - Lifetime
- 2003-12-10 DE DE60328710T patent/DE60328710D1/de not_active Expired - Lifetime
- 2003-12-10 JP JP2004558969A patent/JP4620470B2/ja not_active Expired - Fee Related
- 2003-12-10 US US10/538,295 patent/US7410456B2/en not_active Expired - Lifetime
- 2003-12-10 CN CNB2003801058461A patent/CN100354400C/zh not_active Expired - Lifetime
- 2003-12-10 AT AT03812745T patent/ATE438700T1/de not_active IP Right Cessation
-
2010
- 2010-08-26 JP JP2010189768A patent/JP5139484B2/ja not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| EP1570036A1 (de) | 2005-09-07 |
| JP4620470B2 (ja) | 2011-01-26 |
| KR20050085497A (ko) | 2005-08-29 |
| SE0203699D0 (sv) | 2002-12-12 |
| RU2005121899A (ru) | 2006-01-20 |
| JP5139484B2 (ja) | 2013-02-06 |
| EP1570036B1 (de) | 2009-08-05 |
| WO2004053035A1 (en) | 2004-06-24 |
| KR101066748B1 (ko) | 2011-09-21 |
| ATE438700T1 (de) | 2009-08-15 |
| JP2011032477A (ja) | 2011-02-17 |
| JP2006509857A (ja) | 2006-03-23 |
| RU2330873C2 (ru) | 2008-08-10 |
| DK1570036T3 (da) | 2009-10-26 |
| CN100354400C (zh) | 2007-12-12 |
| DE60328710D1 (de) | 2009-09-17 |
| SE0203699L (sv) | 2004-06-13 |
| CN1726273A (zh) | 2006-01-25 |
| AU2003302920A1 (en) | 2004-06-30 |
| US7410456B2 (en) | 2008-08-12 |
| US20060217254A1 (en) | 2006-09-28 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| SE524469C2 (sv) | Sätta vid rening av olja från förorenande partiklar i en centrifugalseparator | |
| US10376842B2 (en) | Non-dispersive oil recovery from oil industry liquid sources | |
| RU2423165C1 (ru) | Способ и устройство для очистки текучей среды в центробежном сепараторе | |
| AU2008100772A4 (en) | Vibrating Membrane Micro-filtration of Used Oil | |
| CN107540105B (zh) | 一种冷轧浓油乳化液废水的除油方法及其装置 | |
| CN109652117A (zh) | 一种油水分离系统及分离的工艺方法 | |
| CN107473532A (zh) | 一种乳化液废水的处理方法及装置 | |
| CN109534581B (zh) | 一种切削液废水的零排放处理工艺 | |
| CN102092886B (zh) | 一种油田组合式污水处理方法 | |
| KR100349823B1 (ko) | 오일정제법 | |
| EP2961519A1 (de) | Verbesserung der ölqualität mit einer mikroporösen hohlfasermembran | |
| KR100581242B1 (ko) | 금속가공유의 정제장치 | |
| SE434062B (sv) | Sett att avlegsna salter fran brennolja genom anvendning av en centrifugalseparerande anordning | |
| CN112811667B (zh) | 一种序列式除油系统及方法 | |
| KR102209280B1 (ko) | 액체 혼합물로부터의 오염물의 분리 | |
| CN206051947U (zh) | 一种煤焦油预处理组合系统 | |
| RU124677U1 (ru) | Установка для очистки промышленных масел | |
| CN205687674U (zh) | 一种新型一体化油水分离设备 | |
| CN111411014A (zh) | 一种不锈钢轧制油泥无害化的处理方法 | |
| WO1994027700A1 (en) | Method and apparatus for separation of liquids | |
| AU6789994A (en) | Method and apparatus for separation of liquids | |
| WO2017007330A1 (en) | Mechanical treatment system for slop water and method for use of same | |
| BENITO | JOSÉ COCA*, GEMMA GUTIÉRREZ | |
| JP2001137839A (ja) | 固形分を含有する排水の処理方法 |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| NUG | Patent has lapsed |