Patent · US Active

Method and apparatus for argon rejection and recovery

US10066871B2 · kind B2 · utility

6Cited by

28References

19Claims

0Family size

Assignee

Praxair Technology, Inc. · US

Inventors

Neil M. Prosser · Lockport, US
Yang Luo · Amherst, US
Kirk F. Larson · Amherst, US

Key dates

Filing date	Mar 1, 2016
Grant date	Sep 4, 2018
Priority date	—
Expiry date	Sep 22, 2036

Classification

Technology area (CPC F)Mechanical Engineering; Lighting; Heating
CPC primaryF25J2290/34
WIPO fieldChemical engineering
WIPO sectorChemistry

Abstract

A method and apparatus for argon rejection and recovery in which argon is separated from air within a cryogenic air separation plant having a divided wall argon rejection column arrangement and condensed using an argon condenser disposed internally within the lower pressure column. The divided wall argon rejection column arrangement may be an annular arrangement or a side-by-side arrangement (i.e. segmented or planar configuration). The resulting argon stream is subsequently rejected or recovered and optionally purified within an integrated adsorbent based argon refining and purification subsystem to produce product grade argon.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.