The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jun. 02, 2009
Filed:
May. 15, 2007
Nobumi Ino, Shiroi, JP;
Takayuki Kishi, Inashiki, JP;
Toshio Nishio, Moriya, JP;
Akito Machida, Tsukubamirai, JP;
Yoshimitsu Sekiya, Moriya, JP;
Masami Kohama, Moriya, JP;
Masato Noguchi, Toride, JP;
Nobumi Ino, Shiroi, JP;
Takayuki Kishi, Inashiki, JP;
Toshio Nishio, Moriya, JP;
Akito Machida, Tsukubamirai, JP;
Yoshimitsu Sekiya, Moriya, JP;
Masami Kohama, Moriya, JP;
Masato Noguchi, Toride, JP;
Mayekawa Mfg. Co., Ltd., , JP;
Abstract
Cryogenic liquefying/refrigerating method and system, wherein temperature of gas-to-be-liquefied at the inlet of the compressor for compressing the gas is reduced by cooling the gas discharged from the compressor using a high-efficiency chemical refrigerating machine and vapor compression refrigerating machine before the gas is introduced to a multiple stage heat exchanger thereby reducing power input to the compressor and improving liquefying/refrigerating efficiency. Gas-to-be-liquefied compressed by a compressor is cooled by aftercooler, and further cooled by an adsorption refrigerating machine which utilizes waste heat generated in the compressor and by an ammonia refrigerating machine, then the high pressure gas is introduced to a multiple-stage heat exchanger where it is cooled by low pressure low temperature gas separated from a mixture of liquid and gas generated by adiabatically expanding the high pressure gas through an expansion valveand returning to the compressor, and a portion of the high pressure gas is expanded adiabatically by expansion turbines in mid-course of flowing of the high pressure gas through the stages of the heat exchanger to be joined with the low pressure low temperature gas returning to the compressor.