Air separation process for air separation installation, involves extracting argon enriched gas from low pressure column, and delivering gas to argon splitter i.e. argon column, to produce uniform argon enriched flow in liquid form

摘要

The process involves extracting oxygen enriched liquid containing 99 mol percentage of oxygen. The liquid is pressurized and vaporized in an exchange line (21). Nitrogen enriched gas is extracted from a head of a low pressure column (41) and heated in the line. The nitrogen gas is extracted from a head of a medium pressure column (39), heated in the line and released into a nitrogen turbine (17). Argon enriched gas is extracted from the low pressure column and delivered to an argon splitter i.e. argon column (51), to produce a uniform argon enriched flow in a liquid form or final product. An independent claim is also included for an air separation installation comprising an air separation apparatus.