公开(公告)号：US3580226A

公开(公告)日：1971-05-25

申请号：US3580226D

申请日：1969-12-04

Applicant: COMBUSTION ENG

Inventor： BLACKBURN SAMUEL S JR ,  RICHARD EARL K

IPC: F16B39/30 ,  F22G5/04 ,  F22G5/06 ,  F23J5/02

CPC classification number: F22G5/06 ,  F16B39/30 ,  F22G5/04

Abstract: A steam-generating unit using gas recirculation for steam temperature control, where the recirculated gases are introduced into the furnace through the ash hopper. A liquid seal inside the ash hopper is used to control flow of recirculated gases.