JPS6146747B2 - - Google Patents
Info
- Publication number
- JPS6146747B2 JPS6146747B2 JP59146332A JP14633284A JPS6146747B2 JP S6146747 B2 JPS6146747 B2 JP S6146747B2 JP 59146332 A JP59146332 A JP 59146332A JP 14633284 A JP14633284 A JP 14633284A JP S6146747 B2 JPS6146747 B2 JP S6146747B2
- Authority
- JP
- Japan
- Prior art keywords
- liquid
- nitrogen
- rectification column
- air
- condenser
- 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.)
- Expired
Links
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims description 194
- 239000007788 liquid Substances 0.000 claims description 113
- 229910052757 nitrogen Inorganic materials 0.000 claims description 66
- 229910001873 dinitrogen Inorganic materials 0.000 claims description 62
- 238000010992 reflux Methods 0.000 claims description 21
- 238000003860 storage Methods 0.000 claims description 18
- 239000007789 gas Substances 0.000 claims description 15
- 238000001816 cooling Methods 0.000 claims description 13
- 238000004519 manufacturing process Methods 0.000 claims description 11
- 230000006835 compression Effects 0.000 claims description 6
- 238000007906 compression Methods 0.000 claims description 6
- 238000000605 extraction Methods 0.000 claims description 5
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 claims description 4
- 238000007599 discharging Methods 0.000 claims description 3
- 229910002092 carbon dioxide Inorganic materials 0.000 claims description 2
- 239000001569 carbon dioxide Substances 0.000 claims description 2
- 230000020169 heat generation Effects 0.000 claims description 2
- 229910052760 oxygen Inorganic materials 0.000 description 16
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 12
- 239000001301 oxygen Substances 0.000 description 12
- 238000009835 boiling Methods 0.000 description 11
- 238000000034 method Methods 0.000 description 7
- 230000007423 decrease Effects 0.000 description 6
- 229910052739 hydrogen Inorganic materials 0.000 description 5
- 238000001179 sorption measurement Methods 0.000 description 5
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 4
- 239000003054 catalyst Substances 0.000 description 4
- 239000001257 hydrogen Substances 0.000 description 4
- 238000000746 purification Methods 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 239000012535 impurity Substances 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- NBVXSUQYWXRMNV-UHFFFAOYSA-N fluoromethane Chemical compound FC NBVXSUQYWXRMNV-UHFFFAOYSA-N 0.000 description 2
- 239000002994 raw material Substances 0.000 description 2
- 239000003507 refrigerant Substances 0.000 description 2
- 230000008929 regeneration Effects 0.000 description 2
- 238000011069 regeneration method Methods 0.000 description 2
- 230000000630 rising effect Effects 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000000284 extract Substances 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 239000002808 molecular sieve Substances 0.000 description 1
- 238000010926 purge Methods 0.000 description 1
- 238000007670 refining Methods 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- URGAHOPLAPQHLN-UHFFFAOYSA-N sodium aluminosilicate Chemical compound [Na+].[Al+3].[O-][Si]([O-])=O.[O-][Si]([O-])=O URGAHOPLAPQHLN-UHFFFAOYSA-N 0.000 description 1
- 230000008016 vaporization Effects 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25J—LIQUEFACTION, SOLIDIFICATION OR SEPARATION OF GASES OR GASEOUS OR LIQUEFIED GASEOUS MIXTURES BY PRESSURE AND COLD TREATMENT OR BY BRINGING THEM INTO THE SUPERCRITICAL STATE
- F25J3/00—Processes or apparatus for separating the constituents of gaseous or liquefied gaseous mixtures involving the use of liquefaction or solidification
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25J—LIQUEFACTION, SOLIDIFICATION OR SEPARATION OF GASES OR GASEOUS OR LIQUEFIED GASEOUS MIXTURES BY PRESSURE AND COLD TREATMENT OR BY BRINGING THEM INTO THE SUPERCRITICAL STATE
- F25J3/00—Processes or apparatus for separating the constituents of gaseous or liquefied gaseous mixtures involving the use of liquefaction or solidification
- F25J3/02—Processes or apparatus for separating the constituents of gaseous or liquefied gaseous mixtures involving the use of liquefaction or solidification by rectification, i.e. by continuous interchange of heat and material between a vapour stream and a liquid stream
- F25J3/04—Processes or apparatus for separating the constituents of gaseous or liquefied gaseous mixtures involving the use of liquefaction or solidification by rectification, i.e. by continuous interchange of heat and material between a vapour stream and a liquid stream for air
- F25J3/04248—Generation of cold for compensating heat leaks or liquid production, e.g. by Joule-Thompson expansion
- F25J3/04254—Generation of cold for compensating heat leaks or liquid production, e.g. by Joule-Thompson expansion using the cold stored in external cryogenic fluids
- F25J3/0426—The cryogenic component does not participate in the fractionation
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25J—LIQUEFACTION, SOLIDIFICATION OR SEPARATION OF GASES OR GASEOUS OR LIQUEFIED GASEOUS MIXTURES BY PRESSURE AND COLD TREATMENT OR BY BRINGING THEM INTO THE SUPERCRITICAL STATE
- F25J3/00—Processes or apparatus for separating the constituents of gaseous or liquefied gaseous mixtures involving the use of liquefaction or solidification
- F25J3/02—Processes or apparatus for separating the constituents of gaseous or liquefied gaseous mixtures involving the use of liquefaction or solidification by rectification, i.e. by continuous interchange of heat and material between a vapour stream and a liquid stream
- F25J3/04—Processes or apparatus for separating the constituents of gaseous or liquefied gaseous mixtures involving the use of liquefaction or solidification by rectification, i.e. by continuous interchange of heat and material between a vapour stream and a liquid stream for air
- F25J3/04248—Generation of cold for compensating heat leaks or liquid production, e.g. by Joule-Thompson expansion
- F25J3/04254—Generation of cold for compensating heat leaks or liquid production, e.g. by Joule-Thompson expansion using the cold stored in external cryogenic fluids
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25J—LIQUEFACTION, SOLIDIFICATION OR SEPARATION OF GASES OR GASEOUS OR LIQUEFIED GASEOUS MIXTURES BY PRESSURE AND COLD TREATMENT OR BY BRINGING THEM INTO THE SUPERCRITICAL STATE
- F25J3/00—Processes or apparatus for separating the constituents of gaseous or liquefied gaseous mixtures involving the use of liquefaction or solidification
- F25J3/02—Processes or apparatus for separating the constituents of gaseous or liquefied gaseous mixtures involving the use of liquefaction or solidification by rectification, i.e. by continuous interchange of heat and material between a vapour stream and a liquid stream
- F25J3/04—Processes or apparatus for separating the constituents of gaseous or liquefied gaseous mixtures involving the use of liquefaction or solidification by rectification, i.e. by continuous interchange of heat and material between a vapour stream and a liquid stream for air
- F25J3/044—Processes or apparatus for separating the constituents of gaseous or liquefied gaseous mixtures involving the use of liquefaction or solidification by rectification, i.e. by continuous interchange of heat and material between a vapour stream and a liquid stream for air using a single pressure main column system only
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25J—LIQUEFACTION, SOLIDIFICATION OR SEPARATION OF GASES OR GASEOUS OR LIQUEFIED GASEOUS MIXTURES BY PRESSURE AND COLD TREATMENT OR BY BRINGING THEM INTO THE SUPERCRITICAL STATE
- F25J3/00—Processes or apparatus for separating the constituents of gaseous or liquefied gaseous mixtures involving the use of liquefaction or solidification
- F25J3/02—Processes or apparatus for separating the constituents of gaseous or liquefied gaseous mixtures involving the use of liquefaction or solidification by rectification, i.e. by continuous interchange of heat and material between a vapour stream and a liquid stream
- F25J3/04—Processes or apparatus for separating the constituents of gaseous or liquefied gaseous mixtures involving the use of liquefaction or solidification by rectification, i.e. by continuous interchange of heat and material between a vapour stream and a liquid stream for air
- F25J3/04763—Start-up or control of the process; Details of the apparatus used
- F25J3/04769—Operation, control and regulation of the process; Instrumentation within the process
- F25J3/04812—Different modes, i.e. "runs" of operation
- F25J3/04824—Stopping of the process, e.g. defrosting or deriming; Back-up procedures
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25J—LIQUEFACTION, SOLIDIFICATION OR SEPARATION OF GASES OR GASEOUS OR LIQUEFIED GASEOUS MIXTURES BY PRESSURE AND COLD TREATMENT OR BY BRINGING THEM INTO THE SUPERCRITICAL STATE
- F25J2200/00—Processes or apparatus using separation by rectification
- F25J2200/74—Refluxing the column with at least a part of the partially condensed overhead gas
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25J—LIQUEFACTION, SOLIDIFICATION OR SEPARATION OF GASES OR GASEOUS OR LIQUEFIED GASEOUS MIXTURES BY PRESSURE AND COLD TREATMENT OR BY BRINGING THEM INTO THE SUPERCRITICAL STATE
- F25J2210/00—Processes characterised by the type or other details of the feed stream
- F25J2210/42—Nitrogen
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25J—LIQUEFACTION, SOLIDIFICATION OR SEPARATION OF GASES OR GASEOUS OR LIQUEFIED GASEOUS MIXTURES BY PRESSURE AND COLD TREATMENT OR BY BRINGING THEM INTO THE SUPERCRITICAL STATE
- F25J2250/00—Details related to the use of reboiler-condensers
- F25J2250/20—Boiler-condenser with multiple exchanger cores in parallel or with multiple re-boiling or condensing streams
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25J—LIQUEFACTION, SOLIDIFICATION OR SEPARATION OF GASES OR GASEOUS OR LIQUEFIED GASEOUS MIXTURES BY PRESSURE AND COLD TREATMENT OR BY BRINGING THEM INTO THE SUPERCRITICAL STATE
- F25J2290/00—Other details not covered by groups F25J2200/00 - F25J2280/00
- F25J2290/62—Details of storing a fluid in a tank
-
- 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
- Y10S62/00—Refrigeration
- Y10S62/912—External refrigeration system
- Y10S62/913—Liquified gas
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Mechanical Engineering (AREA)
- Thermal Sciences (AREA)
- General Engineering & Computer Science (AREA)
- Separation By Low-Temperature Treatments (AREA)
Priority Applications (7)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP14633284A JPS6124968A (ja) | 1984-07-13 | 1984-07-13 | 高純度窒素ガス製造装置 |
KR1019850004784A KR900005985B1 (ko) | 1984-07-13 | 1985-07-04 | 고순도 질소가스 제조 장치 |
US06/845,277 US4698079A (en) | 1984-07-13 | 1985-07-08 | High-purity nitrogen gas production equipment |
PCT/JP1985/000386 WO1986000694A1 (en) | 1984-07-13 | 1985-07-08 | Apparatus for producing high-purity nitrogen gas |
DE8585903388T DE3566833D1 (en) | 1984-07-13 | 1985-07-08 | Apparatus for producing high-purity nitrogen gas |
EP85903388A EP0191862B1 (en) | 1984-07-13 | 1985-07-08 | Apparatus for producing high-purity nitrogen gas |
CN89100738A CN1018857B (zh) | 1984-07-13 | 1989-02-10 | 生产高纯度氮气的装置 |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP14633284A JPS6124968A (ja) | 1984-07-13 | 1984-07-13 | 高純度窒素ガス製造装置 |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS6124968A JPS6124968A (ja) | 1986-02-03 |
JPS6146747B2 true JPS6146747B2 (US20100223739A1-20100909-C00025.png) | 1986-10-15 |
Family
ID=15405289
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP14633284A Granted JPS6124968A (ja) | 1984-07-13 | 1984-07-13 | 高純度窒素ガス製造装置 |
Country Status (7)
Families Citing this family (20)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4834785A (en) * | 1988-06-20 | 1989-05-30 | Air Products And Chemicals, Inc. | Cryogenic nitrogen generator with nitrogen expander |
US5058387A (en) * | 1989-07-05 | 1991-10-22 | The Boc Group, Inc. | Process to ultrapurify liquid nitrogen imported as back-up for nitrogen generating plants |
FR2660741A1 (fr) * | 1990-04-10 | 1991-10-11 | Air Liquide | Procede et installation de production d'azote gazeux, et systeme de fourniture d'azote correspondant. |
FR2670278B1 (fr) * | 1990-12-06 | 1993-01-22 | Air Liquide | Procede et installation de distillation d'air en regime variable de production d'oxygene gazeux. |
US5144808A (en) * | 1991-02-12 | 1992-09-08 | Liquid Air Engineering Corporation | Cryogenic air separation process and apparatus |
CN1071444C (zh) * | 1992-02-21 | 2001-09-19 | 普拉塞尔技术有限公司 | 生产气体氧的低温空气分离系统 |
FR2697620B1 (fr) * | 1992-10-30 | 1994-12-23 | Air Liquide | Procédé et installation de production d'azote gazeux à débit variable. |
JP3447437B2 (ja) * | 1995-07-26 | 2003-09-16 | 日本エア・リキード株式会社 | 高純度窒素ガス製造装置 |
US5740683A (en) * | 1997-03-27 | 1998-04-21 | Praxair Technology, Inc. | Cryogenic rectification regenerator system |
US5996373A (en) * | 1998-02-04 | 1999-12-07 | L'air Liquide, Societe Ananyme Pour L'etude Et L'exploitation Des Procedes Georges Claude | Cryogenic air separation process and apparatus |
US5906113A (en) * | 1998-04-08 | 1999-05-25 | Praxair Technology, Inc. | Serial column cryogenic rectification system for producing high purity nitrogen |
US7409835B2 (en) * | 2004-07-14 | 2008-08-12 | Air Liquide Process & Construction, Inc. | Backup system and method for production of pressurized gas |
US7210312B2 (en) * | 2004-08-03 | 2007-05-01 | Sunpower, Inc. | Energy efficient, inexpensive extraction of oxygen from ambient air for portable and home use |
KR100614199B1 (ko) * | 2005-05-18 | 2006-08-22 | (주)레베산업 | 선박용 질소가스공급장치 |
FR2903483B1 (fr) * | 2006-07-04 | 2014-07-04 | Air Liquide | Procede et appareil de separation d'air par distillation cryogenique |
FR2920866A1 (fr) * | 2007-09-12 | 2009-03-13 | Air Liquide | Ligne d'echange principale et appareil de separation d'air par distillation cryogenique incorporant une telle ligne d'echange |
CN103041673B (zh) * | 2011-10-13 | 2014-12-10 | 周登荣 | 高压空气的分离方法和系统 |
CN103123203B (zh) * | 2013-02-22 | 2015-03-04 | 河南开元空分集团有限公司 | 利用含氮废气进行再低温精馏制取纯氮的方法 |
CN105758117A (zh) * | 2014-12-19 | 2016-07-13 | 常熟市永安工业气体制造有限公司 | 纯液氮制备方法 |
CN104534812B (zh) * | 2015-01-04 | 2016-10-19 | 中煤能源黑龙江煤化工有限公司 | 一种应用于气体深冷分离设备主精馏塔 |
Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS4940071A (US20100223739A1-20100909-C00025.png) * | 1972-08-17 | 1974-04-15 | ||
JPS5047882A (US20100223739A1-20100909-C00025.png) * | 1973-04-13 | 1975-04-28 | ||
JPS5241232A (en) * | 1975-09-24 | 1977-03-30 | Bayer Ag | Weed killer |
JPS5242158A (en) * | 1975-09-30 | 1977-04-01 | Yokogawa Hokushin Electric Corp | Device for measuring breaking time of relay |
JPS5514351A (en) * | 1978-07-14 | 1980-01-31 | Aisin Warner Ltd | Controller of automatic change gear |
JPS5579972A (en) * | 1978-12-11 | 1980-06-16 | Hitachi Ltd | Operation control of nitrogen production system |
JPS5864478A (ja) * | 1981-10-15 | 1983-04-16 | 日本酸素株式会社 | 高純度窒素製造装置 |
Family Cites Families (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1067046B (de) * | 1956-01-04 | 1959-10-15 | Union Carbide Corporation, New York, N. Y. (V. St. A.) | Verfahren zum Zerlegen eines Gasgemisches bei niedriger Temperatur und Vorrichtunig zur Durchführung des Verfahrens |
US3062016A (en) * | 1957-12-31 | 1962-11-06 | Air Reduction | Maintaining high purity argon atmosphere |
US3363427A (en) * | 1964-06-02 | 1968-01-16 | Air Reduction | Production of ultrahigh purity oxygen with removal of hydrocarbon impurities |
GB1135871A (en) * | 1965-06-29 | 1968-12-04 | Air Prod & Chem | Liquefaction of natural gas |
JPS5944569A (ja) * | 1982-09-03 | 1984-03-13 | 株式会社日立製作所 | 窒素製造装置の運転方法 |
GB2129115B (en) * | 1982-10-27 | 1986-03-12 | Air Prod & Chem | Producing gaseous nitrogen |
WO1984003554A1 (en) * | 1983-03-08 | 1984-09-13 | Daido Oxygen | Apparatus for producing high-purity nitrogen gas |
US4526425A (en) * | 1983-04-04 | 1985-07-02 | J. I. Case Company | Dual wheel mounting arrangement |
-
1984
- 1984-07-13 JP JP14633284A patent/JPS6124968A/ja active Granted
-
1985
- 1985-07-04 KR KR1019850004784A patent/KR900005985B1/ko not_active IP Right Cessation
- 1985-07-08 EP EP85903388A patent/EP0191862B1/en not_active Expired
- 1985-07-08 US US06/845,277 patent/US4698079A/en not_active Expired - Lifetime
- 1985-07-08 DE DE8585903388T patent/DE3566833D1/de not_active Expired
- 1985-07-08 WO PCT/JP1985/000386 patent/WO1986000694A1/ja active IP Right Grant
-
1989
- 1989-02-10 CN CN89100738A patent/CN1018857B/zh not_active Expired
Patent Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS4940071A (US20100223739A1-20100909-C00025.png) * | 1972-08-17 | 1974-04-15 | ||
JPS5047882A (US20100223739A1-20100909-C00025.png) * | 1973-04-13 | 1975-04-28 | ||
JPS5241232A (en) * | 1975-09-24 | 1977-03-30 | Bayer Ag | Weed killer |
JPS5242158A (en) * | 1975-09-30 | 1977-04-01 | Yokogawa Hokushin Electric Corp | Device for measuring breaking time of relay |
JPS5514351A (en) * | 1978-07-14 | 1980-01-31 | Aisin Warner Ltd | Controller of automatic change gear |
JPS5579972A (en) * | 1978-12-11 | 1980-06-16 | Hitachi Ltd | Operation control of nitrogen production system |
JPS5864478A (ja) * | 1981-10-15 | 1983-04-16 | 日本酸素株式会社 | 高純度窒素製造装置 |
Also Published As
Publication number | Publication date |
---|---|
EP0191862A4 (en) | 1986-11-25 |
CN1018857B (zh) | 1992-10-28 |
EP0191862B1 (en) | 1988-12-14 |
KR900005985B1 (ko) | 1990-08-18 |
JPS6124968A (ja) | 1986-02-03 |
DE3566833D1 (en) | 1989-01-19 |
EP0191862A1 (en) | 1986-08-27 |
US4698079A (en) | 1987-10-06 |
WO1986000694A1 (en) | 1986-01-30 |
KR860001331A (ko) | 1986-02-24 |
CN1044850A (zh) | 1990-08-22 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
LAPS | Cancellation because of no payment of annual fees |