7Robert Williams, Ron Walker. Submerged combustion[J]. Gas Engineering and Management, 1997,37 (7) .77-83.
8Goldstick R,Thumam A. Principles of Waster Heat Recovery[M]. New York:The Fairmont Press Inc. , 1986.
9Eric L P, Steven E P, Joseph L J. Sludge treatment system using two-stage heat recovery submerged combustion[P]. US. 6293277B1,2001-09-25.
10Tosato R. Heat recovery with a gas-fired condensing boiler[C]//Proceedings of the Intersociety Energy Conversion Engineering Conference, Australia, 1985.