METHOD AND DEVICE TO SEPARATE AIR,申请号JP19950285497-传众专利搜索

METHOD AND DEVICE TO SEPARATE AIR

申请公布号：JPH08219636(A)

申请号：JP19950285497

申请日期：1995.11.02

申请公布日期：1996.08.30

申请人：

BOC GROUP INC:THE

发明人：ROBAATO EI MOSUTERO

分类号：F25J3/02;F25J3/04;(IPC1-7):F25J3/02

主分类号：F25J3/02

摘要：PROBLEM TO BE SOLVED: To increase quantity of cooling potential that is supplied by a turboexpander to separate air, by reducing the exhaust air pressure of the turboexpander. SOLUTION: Entering air flow 12 is filtered by a filter 14, and the air is compressed by a main compressor 16. Compression heat is removed by an aftercooler 18, and water and carbon dioxide are removed from the air flow 12 by an auxiliary refining unit 19. Then, the air flow 12 is cooled down to a temperature suitable for its rectification in a main heat exchanger 20, and is introduced into an air separating unit 22. The air separating unit 22 produces the flow of an oxygen 24, and it is amply heated in the main heat exchanger 20. The flow of exhaust nitrogen 26 is produced by the air separating unit 22, and it is amply heated in the main heat exchanger 20. In order to increase the amount of a cooling potential to be supplied, a refrigerant flow 32 is extracted by a blower 34 at a pressure under atmospheric pressure, and then discharged atmospheric pressure.