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41. 发明专利

JPS5829580A SHIELDING OR RESTRAINING GASEOUS MIXTURE 失效
公开(公告)号：JPS5829580A
公开(公告)日：1983-02-21
申请号：JP12775981
申请日：1981-08-17
申请人： TEISAN KK
发明人： TERAKADO JIYUNICHI , YAMAMOTO YUKIO
IPC分类号： B23K9/16
摘要： PURPOSE:To improve productivity without degrating the mechanical properties of melt stuck parts by using a gaseous mixture consisting of specific mixing ratios of gaseous hydrogen and gaseous argon as a shielding or restarting gaseous mixture. CONSTITUTION:A gaseous mixture of 0.5-3.5% gaseous hydrogen and the balance gaseous argon is used for an shielding or restraining gaseous mixing for inert gas shielded tungsten welding or plasma welding for both automatic and manual welding. If the thickness of welding materials is

42. 发明专利

JPH10132797A METHOD AND APPARATUS FOR GAS CHROMATOGRAPHY 失效
公开(公告)号：JPH10132797A
公开(公告)日：1998-05-22
申请号：JP29239796
申请日：1996-11-05
申请人： TEISAN KK
发明人： NAKAMURA AKIO , KITAHARA YOSHIHIRO
IPC分类号： G01N30/14 , G01N30/46 , G01N30/66
摘要： PROBLEM TO BE SOLVED: To provide a gas chromatography, whereby a minute amount of nitrogen gas component in argon gas or oxygen gas can be quantitatively analyzed with good detection sensitivity, and a gas chromatograph utilizable in the gas chromatography. SOLUTION: In the method, a TCD(terminal conductivity detector) is used as a detector 4, and molecular sheaves are used as a separating column 3, so that a nitrogen gas component of a minute amount is argon gas or oxygen gas introduced by a carrier gas is quantitatively analyzed. Helium gas or hydrogen gas is used as the carrier gas, and the gases are separated at a first column 3a. A part of the argon gas or oxygen gas discharged earlier than the nitrogen gas component is removed beforehand, and the gas discharged subsequently is passed and separated again through a second column 3b before introduced into the detector 4.

43. 发明专利

JP2721402B2 失效
公开(公告)号：JP2721402B2
公开(公告)日：1998-03-04
申请号：JP19739689
申请日：1989-07-28
申请人： TEISAN KK
发明人： ISHITANI KINYA
IPC分类号： F16L19/03

44. 发明专利

JPH09264667A MANUFACTURING DEVICE FOR EXTRA-HIGH PURITY NITROGEN AND OXYGEN 失效
公开(公告)号：JPH09264667A
公开(公告)日：1997-10-07
申请号：JP7244896
申请日：1996-03-27
申请人： TEISAN KK
发明人： YAMAMOTO TAKAO
IPC分类号： F25J3/04
摘要： PROBLEM TO BE SOLVED: To provide a device to simultaneously manufacture extra-high purity nitrogen and extra-high purity liquid oxygen. SOLUTION: The interior of a first fractionating tower 6 is partitioned into an upper fractionating part 12, an upper stage middle fractionating part 13, a lower stage middle fractionating part 14, and a lower fractionating part 15, and a nitrogen condenser 8 is connected to an upper part 11 of the upper fractionating part. A second fractionating tower 7 is partitioned into an upper fractionating part 22 and a lower fractionating part 23, and the lower fractionating part is provided at a lower part with a reboiler 25. Extra-high purity liquid nitrogen is recovered from between the upper fractionating part 12 and the upper stage middle fractionating part 13 of the first fractionating tower 6 and extra-high purity liquid oxygen is recovered from the lower part of the lower fractionating part 23 of the second fractionating tower 7.

45. 发明专利

JPH09184681A METHOD FOR MANUFACTURING SUPER HIGH-PURITY OXYGEN AND NITROGEN 失效
公开(公告)号：JPH09184681A
公开(公告)日：1997-07-15
申请号：JP12469396
申请日：1996-05-20
申请人： TEISAN KK
发明人： YAMAMOTO TAKAO , TOMITA SHINJI , DEN AKIRA
IPC分类号： F25J3/04
摘要： PROBLEM TO BE SOLVED: To provide a device capable of performing a concurrent manufacturing of liquid nitrogen of super-high purity and liquid oxygen of super-high purity. SOLUTION: An inner side of a first refining tower 6 is divided into an upper refining section 12, an intermediate refining section 13 and a lower refining section 14. To the upper section of the upper refining section is connected a nitrogen condenser 8. A second refining tower 7 is provided with a re-boiler 24 at the lower part of the refining section 22. Liquid nitrogen of super-high purity is recovered from between the upper refining section 12 of the first refining tower 6 and the intermediate refining section 13. Liquid air not containing substance of high boiling point recovered from between the intermediate refining section 13 and the lower refining section 14 is reduced in its pressure by an expansion valve 32, thereafter the air is supplied to the upper section of the refining section 22 of the second refining tower 7, contacted in a counter-flow state with gas gasified by a reboiler 24 arranged at a lower part of the refining section so as to separate the substance of low boiling point and then liquid oxygen of super-high purity is recovered from the lower part of the refining section 22 of the second refining tower 7.

46. 发明专利

JPH0933166A METHOD AND APPARATUS FOR PRODUCING ULTRAHIGH-PURITY NITROGEN 失效
公开(公告)号：JPH0933166A
公开(公告)日：1997-02-07
申请号：JP18593395
申请日：1995-07-21
申请人： TEISAN KK
发明人： NAGAMURA TAKASHI , YAMAMOTO TAKAO , TOMITA SHINJI
IPC分类号： B01D53/04 , B01D53/86 , F25J3/04 , F25J3/08
摘要： PROBLEM TO BE SOLVED: To produce ultrahigh-purity nitrogen at a high yield. SOLUTION: Carbon dioxide, water, and catalyst poison of an oxidation catalyst in the air fed as raw material are removed by a decarbonization-desiccation device 4 and the resulting air is led into a low-pressure rectifying column 6 where carbon dioxide, water, and catalyst poison are removed further from the air by crude rectification. Next the crude nitrogen gas obtained at the lowpressure rectifying column 6 is led into an oxidation tower 8 where carbon monoxide in the crude nitrogen gas is turned into carbon dioxide and, after turning hydrogen into water, the crude nitrogen gas is led into an adsorption tower 10 where carbon dioxide and water are removed therefrom by adsorption and a crude nitrogen gas is obtained as raw material. This crude nitrogen gas as raw material is further led into a medium-pressure rectifying column 11 for rectification. Nitrogen gas obtainable from the top part of the medium-pressure rectifying column is condensed by a reboil condenser 6RC into a high-purity liquid nitrogen, then returned to the medium-pressure rectifying column 11, and part of the high-purity liquid nitrogen is made to flow as a refluxed liquid and the rest of it is drawn as an end product which is ultrahigh-purity nitrogen gas or ultrahigh-purity liquid nitrogen from a rectification stage positioned several stages below the top rectification stage of the medium-pressure rectifying column.

47. 发明专利

JPH08296938A METHOD AND APPARATUS FOR QUICK FREEZING BY USE OF LIQUID NITROGEN 失效
公开(公告)号：JPH08296938A
公开(公告)日：1996-11-12
申请号：JP12561395
申请日：1995-04-27
申请人： TEISAN KK
发明人： OGURO TAKASHI
IPC分类号： F25D3/10
摘要： PURPOSE: To enable easy change of the degree of cooling by providing a cooling device for maintaining an interior of a container for containing goods to be frozen at a slightly low temperature and a liquid nitrogen type quick freezing means capable of lowering temperature in the interior of the container to temperatures within the range of cryogenic temperatures. CONSTITUTION: In a freezing operation, first an interior of a container l is cooled to a weak low temperature e.g. around -40 deg.C by a chlorofluoro carbon refrigerating device 5 and the container is charged with packs 3 of goods to be frozen such as chocolate and the like. Then, chlorofluoro carbon gas in an evaporator 6 is collected by a built-in pump in the chlorofluoro carbon cooling device 5. Drops of liquid nitrogen are made to fall from a liquid nitrogen source 4 through a pipe 7 toward an agitating fan 2 in the container so as to be evaporated in the container 1 and the interior of the container 1 is cooled to a cryogenic temperature of e.g. -80 deg.--100 deg.C and the state is maintained for a period of time, e.g. 10 minutes. After that, introduction of the liquid nitrogen is stopped, the nitrogen gas within the container 1 is discharged through an exhaust pipe 8 and the chlorofluoro carbon cooling device 5 is operated again to maintain temperature in the container 1 at a specified temperature.

48. 发明专利

JPH08278082A ROTARY MELTING FURNACE 失效
公开(公告)号：JPH08278082A
公开(公告)日：1996-10-22
申请号：JP7906895
申请日：1995-04-04
申请人： TOYODA AUTOMATIC LOOM WORKS , TOYOTA MOTOR CORP , TEISAN KK , NANIWA ROKI KENKYUSHO KK
发明人： HIRANO HARUYOSHI , HIRAI HIDETOSHI , KAMIYA YUJI , KOBAYASHI HIROSHI , OKADA YUJI , SHIRAKAWA HIROICHI , TSURUOKA HIROYUKI , CHOKAI MAKOTO , TANAKA HIROYUKI , MURATA HIROTOSHI
IPC分类号： F27D17/00 , F27B7/12
摘要： PURPOSE: To prevent the exhaust of smoke from a furnace body and to reduce the loss of the thermal energy. CONSTITUTION: The rotary melting furnace comprises a cover holder 7 arranged on the moving locus of an exhaust port 14 in the case of moving a furnace body 1, and a cover member 8 detachably held by the holder 7, engaged with the flange 15 of the body 1 to cover the port 14 in the case of shifting the body 1 from a horizontal attitude to an upright attitude and engaged to be returned to the holder 7 when the body 1 is reset from the upright attitude to the horizontal attitude.

49. 发明专利

JP2534614B2 失效
公开(公告)号：JP2534614B2
公开(公告)日：1996-09-18
申请号：JP15636393
申请日：1993-06-03
申请人： TEISAN KK
发明人： TOMITA SHINJI , MURAYAMA SHUICHI
IPC分类号： B01D53/04 , B01D53/047 , F25J3/08

50. 发明专利

JPH08218187A METHOD FOR REMOVING ZINC FROM SCRAP GLAVANIZED STEEL SHEET 失效
公开(公告)号：JPH08218187A
公开(公告)日：1996-08-27
申请号：JP2200495
申请日：1995-02-09
申请人： TOYOTA MOTOR CORP , TEISAN KK
发明人： NISHIO KENICHI , KIZAKI TSUTOMU , TSURUOKA HIROYUKI , ONO YUTAKA , TAKAHANE MINORU , TANAKA HIROYUKI , HIROSE EIJI
IPC分类号： C23F4/02 , C22B7/00
摘要： PURPOSE: To provide a method for rapidly heating scrap galvanized steel sheet and preventing the oxidation of the scrap. CONSTITUTION: Scrap galvanized steel sheet in a furnace is heated by a burner, and zinc is vaporized from the scrap and removed. The oxygen ratio is controlled to >=1 until the scrap is heated to a specified temp. between 600 and 850 deg.C, e.g. 750 deg.C, and to 0.5-0.8 above the specified temp. The dezincificated scrap is cooled by filling the furnace with an inert gas, the scrap is cooled in another vessel packed with a carbon forming material such as chaff, or the scrap is agitated by a protrusion provided on the inner face of the furnace when the furnace is rotated and cooled.

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