US 2012/0070788 A1Published application

ECCENTRIC JET TYPE LOW NOx OXYFUEL BURNER

AssigneeKorea Institute of Energy Research

InventorsDong-Soon Noh, Eun-Kyung Lee, Chang-Bok Ko

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Abstract

Disclosed is an eccentric jet type low NOX oxyfuel burner for gaseous fuel, which freely controls the shape of a flame and a combustion characteristic by using an eccentric injection nozzle. The disclosed oxyfuel burner reduces an optimum mixture rate forming area in comparison with a conventional coaxial-injection, and enlarges a thin fuel area and an excessive fuel area so that partial generation of a flame with a high temperature is restricted. Therefore, an amount of generated nitrogen oxide can be minimized and the stability of a flame can be significantly improved. Particularly, the oxyfuel burner combines a fuel nozzle and an oxygen combustion nozzle having different diameters so as to use them so that it is very simple and practical to design and manufacture the oxyfuel burner.

Claims8

Dependent claims

An eccentric jet type low NOX oxyfuel burner for gaseous fuel, comprising:

an oxygen combustion pipe inserted within a burner tile so as to be concentrically positioned respective to a central axis of the burner tile, the oxygen combustion pipe comprising an oxygen feeding pipe connected to one side portion of a circumferential surface of the oxygen combustion pipe so that oxygen is supplied through an oxygen feeding inlet provided at one end of the oxygen feeding pipe, and an oxygen combustion nozzle for injecting the supplied oxygen, provided at one end of the oxygen combustion pipe;
and
a fuel combustion pipe inserted within the oxygen combustion pipe so as to be concentrically positioned respective to a central axis of the oxygen combustion pipe, the fuel combustion pipe comprising a fuel feeding pipe connected to one end of the fuel combustion pipe so that fuel is supplied through a fuel feeding inlet provided at one end of the fuel feeding pipe, and a fuel combustion nozzle provided at a same side as the oxygen combustion nozzle so as to inject fuel at a position deviating as much as a certain multiple of a set measurement from a central axis of the oxygen combustion pipe.

Dependencies are inferred from the claim text.

Facts

Application: 12/885,670Filed 20 Sep 2010
Published: 22 Mar 2012
Term ends: Not estimatedThe source records don’t support an estimate.

Classification5 codes

F23D 14/22
Non-premix gas burners, i.e. in which gaseous fuel is mixed with combustion air on arrival at the combustion zone: with separate air and gas feed…
F23D 14/32
Burners for combustion of a gas, e.g. of a gas stored under pressure as a liquid: using a mixture of gaseous fuel and pure oxygen or…
Y02E 20/34
Combustion technologies with mitigation potential: indirect CO2mitigation, i.e. by acting on non CO2directly related matters of the process, e.g.…
F23D
Burners