Air Water Inc.

Ryosuke Matsubayashi

Akira Yoshino

Koji Tanaka

Shinya Okumura

Junya Suenaga

There is provided a method of generating nitrogen which includes cryogenically separating compressed air introduced into a high-pressure column, storing liquid airin a bottom portion of the high-pressure columnand taking nitrogen in gaseous form from an upper portion of the high-pressure column, introducing the liquid airstored in the bottom portion of the high-pressure columninto a low-pressure column, cryogenically separating the liquid airintroduced into the low-pressure columnand storing oxygen-enriched liquid airin a bottom portion of the low-pressure columnand taking nitrogen in gaseous form from an upper portion of the low-pressure columnas a product gas. Liquid airtaken through an extraction pipeis introduced into a portion of a rectification partof the low-pressure columnin which the number of theoretical plates from a column bottom side is set within the range of one to ten.

Growing community of inventors

Sakai, Japan

Ryosuke Matsubayashi