Patent · US Active

Method of combustion with the aid of burners in industrial furnaces, and a burner to this end

US7993130B2 · kind B2 · utility

3Cited by

34References

20Claims

0Family size

Assignee

Sandvik Intellectual Property AB · SE

Inventors

Thomas Lewin · Hallstahammar, SE
Pauli Mäenpää · Arboga, SE
Jörgen Sjöberg · Hagfors, SE
Ole Stadum · Gran, NO

Key dates

Filing date	Oct 10, 2005
Grant date	Aug 9, 2011
Priority date	—
Expiry date	Aug 3, 2026

Classification

Technology area (CPC F)Mechanical Engineering; Lighting; Heating
CPC primaryF23C2900/03009
WIPO fieldThermal processes and apparatus
WIPO sectorMechanical engineering

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 NOx is formed.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.