Title:
NITROGEN PRODUCTION SYSTEM THAT PRODUCES OXYGEN TOGETHER WITH NITROGEN
Document Type and Number:
Japanese Patent JP2021050842
Kind Code:
A
Abstract:
To provide a nitrogen production system that produces oxygen together with nitrogen, wherein, even when an amount of oxygen production is larger than an amount of nitrogen production, it is possible to achieve a high nitrogen recovery rate.SOLUTION: A nitrogen production system that produces oxygen together with nitrogen, having a main heat exchanger (1), a first rectification tower (2), a second rectification tower (3), and a third rectification tower (4; 40). A first nitrogen condenser (5) is disposed inside or below a second rectification tower bottom (31). A second nitrogen condenser (6; 60) is disposed inside or below a third rectification tower bottom (41; 401).SELECTED DRAWING: Figure 1
Inventors:
HIROSE KENJI
Application Number:
JP2019172579A
Publication Date:
April 01, 2021
Filing Date:
September 24, 2019
Export Citation:
Assignee:
AIR LIQUIDE
International Classes:
F25J3/04
Attorney, Agent or Firm:
Patent Business Corporation Unias International Patent Office