Combustion – Combustion products return structure – Recirculation about mixing or combustion chamber wall or baffle
Reexamination Certificate
2011-08-09
2011-08-09
McAllister, Steven B (Department: 3749)
Combustion
Combustion products return structure
Recirculation about mixing or combustion chamber wall or baffle
C431S005000, C431S009000, C431S115000, C431S220000, C431S354000, C075S010360, C075S549000, C126S09100A, C422S227000, C432S072000
Reexamination Certificate
active
07993130
ABSTRACT:
Method of combustion with a gas burner having a burner head at one end of an inner gas pipe surrounded by an outer protective pipe, wherein gases from the burner head flow inside the inner pipe and inside the outer pipe and thereafter flow into an exhaust channel. The inner pipe terminates short of the burner head; a sleeve downstream of the burner head, is inserted into and/or placed concentrically with the inner pipe so that the sleeve orifice is located within the inner pipe; a gap is provided between the opening of the inner pipe and the sleeve. The gap is sized such that the mixture of fuel and combustion air from the burner head and recycled exhaust gases passing through the gap will be mixed in quantities at which the temperature of combustion will be lower than the temperature in which NOxis formed.
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File “NOx Formation.pdf”; “Combustion Engineering Issues for Solid Fuel Systems (2008)”; Editors Bruce G. Miller et al.; © www.knovel.com; p. 868.
Lewin Thomas
Mäenpää Pauli
Sjöberg Jörgen
Stadum Ole
McAllister Steven B
Namay Daniel E
Sandvik Intellectual Property AB
Young & Thompson
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