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:
Aug. 07, 1979
Filed:
Mar. 24, 1977
Applicant:
Inventors:
Luigi Gazzi, Milan, IT;
Oronzo Sguera, San Donato Milanese, IT;
Assignee:
Snamprogetti S.p.A., Milan, IT;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F25J / ;
U.S. Cl.
CPC ...
62 28 ; 62 39 ; 62 26 ; 62 31 ; 62 40 ;
Abstract
In a method for the refrigerative fractionation of cracking gases in ethylene production plants, the improvement consisting in that ethane is used as the refrigeration fluid, it being thus possible to attain very low temperatures, down to minus 88.degree. C.: concurrently, the condensation with water is practicable whenever water is available in large masses at a temperature which is in the range from zero centigrade to +25.degree. C.; that is the case of sea waters in cold countries or fresh waters in cold climate. A considerable first-cost and running economy become thus available.