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. 20, 2019
Filed:
Oct. 15, 2015
Nick J. Degenstein, East Amherst, NY (US);
Lee J. Rosen, Buffalo, NY (US);
Ahmed F. Abdelwahab, Clarence Center, NY (US);
Carl L. Schwarz, East Aurora, NY (US);
Reh-lin Chen, Williamsville, NY (US);
Henry E. Howard, Grand Island, NY (US);
Nick J. Degenstein, East Amherst, NY (US);
Lee J. Rosen, Buffalo, NY (US);
Ahmed F. Abdelwahab, Clarence Center, NY (US);
Carl L. Schwarz, East Aurora, NY (US);
Reh-Lin Chen, Williamsville, NY (US);
Henry E. Howard, Grand Island, NY (US);
PRAXAIR TECHNOLOGY, INC., Danbury, CT (US);
Abstract
A method for compression of an incoming feed air stream using at least two variable speed compressor drive assemblies controlled in tandem is provided. The first variable speed drive assembly drives at least one compression stage in the lower pressure compressor unit driven while the second variable speed drive assembly drives higher pressure compression stage disposed either in the common air compression train or the split functional compression train of the air separation plant. The first and second variable speed drive assemblies are preferably high speed, variable speed electric motor assemblies each having a motor body, a motor housing, and a motor shaft with one or more impellers directly and rigidly coupled to the motor shaft via a sacrificial rigid shaft coupling.