Ellipsoidal adsorbent particles and their use in a gas production process

US6221492A · kind A · utility

Assignee

• L'Air Liquide, Societe Anonyme Pour l'Etude et l'Exploitation des Procedes Georges Claude · FR

Inventors

• Serge Moreau · Vélizy-Villacoublay, FR
• Jacques Labasque · Versailles, FR

Key dates

• Filing date: Dec 18, 1998
• Grant date: Apr 24, 2001
• Expiry date: Dec 18, 2018

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10T428/2982
• WIPO field: Chemical engineering
• WIPO sector: Chemistry

Abstract

Aggregated absorbent particles having a shape similar to an ellipsoid, which has a first axis (A--A) of length (a), a second axis (B--B) of length (b) and a third axis (C--C) of length (c), the first, second and third axes being orthogonal. The lengths of the first, second and third axes are such that: a>b.gtoreq.c, and the ratio (a/b) of the length (a) of the first axis (A--A) to the length (b) of the second axis (B--B) is such that: 1.05<a/b<2.50. These aggregated absorbent particles are used in a gas production unit, in particular a PSA unit with radial geometry, for implementing a process of separating a gas flow, such as air or a syngas, with a view to producing, in particular, oxygen with a purity of at least 90%, hydrogen or purified air which can subsequently be separated by cryogenic distillation.