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1. 发明授权

US06430962B1 Production method for oxygen 有权
公开(公告)号：US06430962B1
公开(公告)日：2002-08-13
申请号：US09784144
申请日：2001-02-16
申请人： Shinichi Miura , Masayuki Tanaka , Koji Noishiki , Shuhei Natani
发明人： Shinichi Miura , Masayuki Tanaka , Koji Noishiki , Shuhei Natani
IPC分类号： F25J300
摘要： In a production method for oxygen, liquid oxygen is taken out from a rectification column of an air separation unit, and is compressed by a pump so that the pressure thereof exceeds the critical pressure. Then, the oxygen is led into a heat exchanger and is heated therein so that the temperature of the oxygen exceeds the critical temperature.

2. 发明授权

US06492040B2 Welding construction and heat exchanger using the welding construction 有权
标题翻译：焊接施工和换热器采用焊接施工
公开(公告)号：US06492040B2
公开(公告)日：2002-12-10
申请号：US09891308
申请日：2001-06-27
申请人： Koji Noishiki , Kenichirou Mitsuhashi , Shuhei Natani , Masahiro Gotou
发明人： Koji Noishiki , Kenichirou Mitsuhashi , Shuhei Natani , Masahiro Gotou
IPC分类号： B32B1520
CPC分类号： F28F21/084 , B23K35/286 , F28F9/0219 , Y10S165/905 , Y10S428/926 , Y10T428/12271 , Y10T428/12347 , Y10T428/1241 , Y10T428/12583 , Y10T428/1259 , Y10T428/12611 , Y10T428/12764
摘要： To make stress corrosion cracking caused by precipitation of a &bgr; layer (Mg2Al3) in a welding part (5) or in the periphery of the welding part (5) hard to occur. An apparatus body (1) and a header (3) formed of an aluminum alloy with precipitation of magnesium suppressed by standardized heat treatment are assembled and welded, and natural gas containing mercury is subjected to heat exchanging. There are provided with backing metal (4) disposed on the back of the inner wall surface of one header (3) prior to standardized heat treatment and placed in contact with the other apparatus body (1) at the time of assembling and welding, a welding part (5) formed by being assembled and welded using first welding metal containing magnesium at percent content not less than 2.0% in a space part formed by the backing metal (4), the apparatus body (1) and the header (3), and a seal part (6) formed by seal-welding, so that first welding metal may not contact with fluid from a contact part between the backing metal (4) and the apparatus body (1), the contact part using second welding metal containing magnesium at percent content not more than 2.0%.
摘要翻译：在焊接部（5）或焊接部（5）的周围难以发生由β层（Mg2Al3）析出引起的应力腐蚀开裂。组装焊接由铝合金形成的装置主体（1）和由标准化热处理抑制的镁析出的集管（3），对含有汞的天然气进行热交换。在标准化热处理之前设置有设置在一个集管（3）的内壁表面的后部的背衬金属（4），并且在组装和焊接时与另一个设备主体（1）接触，焊接部件（5）通过在由背衬金属（4），装置本体（1）和集管（3）形成的空间部分中使用含有不少于2.0％的含镁量的第一焊接金属进行组装和焊接而形成，以及通过密封焊接形成的密封部分（6），使得第一焊接金属可能不与来自背衬金属（4）和装置主体（1）之间的接触部分的流体接触，所述接触部分使用第二焊接金属含镁含量不超过2.0％。

3. 发明授权

US5979182A Method of and apparatus for air separation 失效
标题翻译：空气分离方法和装置
公开(公告)号：US5979182A
公开(公告)日：1999-11-09
申请号：US962274
申请日：1997-10-31
申请人： Masahiro Goto , Shuhei Natani , Masayuki Tanaka
发明人： Masahiro Goto , Shuhei Natani , Masayuki Tanaka
IPC分类号： F25J3/00 , F25J3/04 , F25J5/00 , F28D9/00
CPC分类号： F28D9/0068 , F25J3/0409 , F25J3/04103 , F25J3/04157 , F25J3/04206 , F25J3/04303 , F25J3/04412 , F25J3/04884 , F25J5/002 , F25J2205/32 , F25J2205/34 , F25J2250/40 , F25J2250/50 , F25J2290/32 , F25J2290/42 , Y10S62/903
摘要： Disclosed is a technique which makes it possible to restrain as much as possible the pressure loss, in particular, the pressure of return gas, generated in the main heat exchanger actually used when performing air separation and to reduce the power of the material air compressor as much as possible. In an air separation method of the type in which compressed air cooled through a main heat exchanger is supplied to a lower column of a rectifying tower equipped with upper and lower columns and in which return gas from the upper column of the rectifying tower is passed through the main heat exchanger to utilize it to cool the compressed air, an open end passage is provided in the main heat exchanger, and wherein the return gas is entirely or partly caused to flow through the open end passage, whereby a reduction in the pressure loss of the return gas is achieved.
摘要翻译：公开了一种技术，其可以尽可能地抑制在进行空气分离时实际使用的主热交换器中产生的压力损失，特别是回流气体的压力，并且将材料空气压缩机的功率降低为尽可能的在通过主热交换器冷却的压缩空气被供给到具有上列和下列的精馏塔的下塔的空气分离方法中，并且来自精馏塔的上塔的返回气体通过主热交换器利用它来冷却压缩空气，在主热交换器中设置开口通道，其中返回气体完全或部分地流过开口端通道，从而减小压力损失的回气。

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