Patent · US Expired

Air separation process

US6038885A · kind A · utility

4Cited by

7References

18Claims

0Family size

Assignee

Linde GmbH · DE

Inventors

Horst Corduan · Puchheim, DE
Stefan Lochner · Grafing, DE

Key dates

Filing date	Jul 30, 1998
Grant date	Mar 21, 2000
Priority date	—
Expiry date	Jul 30, 2018

Classification

Technology area (CPC F)Mechanical Engineering; Lighting; Heating
CPC primaryF25J2290/62
WIPO fieldChemical engineering
WIPO sectorChemistry

Abstract

A process and a system for the low-temperature separation of air by rectification is provided. A liquid fraction is obtained in a rectifying system, stored in a tank and at least a portion of the liquid fraction taken out of the tank and brought to an increased pressure. During normal operation, the liquid fraction, which was brought to an increased pressure, is heated in a preheat exchanger and evaporated in the main heat exchanger. During an operating disturbance, at least a portion of the liquid product is removed from the tank, evaporated and used for an emergency supply.

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