US 7,610,761 B2 · Method and device for the combustion of hydrogen in a premix burner

Abstract

A method and a device for producing an ignitable fuel/air mixture includes a fuel fraction which is hydrogen or a gas mixture containing hydrogen and which is burnt in a burner arrangement for driving a thermal engine, in particular a gas turbine plant. An exemplary method includes combining a fuel flow and of an air flow, so as to form a fuel/air mixture flow, and providing a further air flow, catalyzing part of the fuel/air mixture flow, so as to form a partly catalyzed fuel/air mixture, during an exothermal catalytically assisted reaction of the fuel, the released heat of which is utilized at least partially for heating the further air flow, admixing the heated further air flow to the partly catalyzed fuel/air mixture, so as to form an ignitable fuel/air mixture, and igniting and combusting the ignitable fuel/air mixture.

Claims22

Dependent claims

A method for producing an ignitable fuel/air mixture, the fuel fraction of which consists essentially of a gas mixture containing hydrogen and which is to be burnt in a burner arrangement for driving a thermal engine, the method comprising:

combining a fuel flow and an air flow to form a fuel/air mixture flow, and providing a further air flow;
catalyzing part of the fuel/air mixture flow to form a partly catalyzed fuel/air mixture, during an exothermal, catalytically assisted reaction of the fuel, heat released from said reaction of the fuel at least partially heating the further air flow;
admixing the heated further air flow with the partly catalyzed fuel/air mixture to form an ignitable fuel/air mixture;
and
igniting and combusting the ignitable fuel/air mixture;
wherein the hydrogen-containing fuel has a hydrogen fraction of at least 30%.

3 more elements

An apparatus for producing an ignitable fuel/air mixture for operating a burner of a thermal engine, the apparatus comprising:

at least one catalyzer unit configured to be arranged upstream of the burner, the unit having a multiplicity of identically oriented passage ducts, the multiplicity of ducts comprising a first group provided on a duct wall inside with a catalyst material, and a second group of chemically largely-inert material;
a first infeed configured and arranged to introduce a fuel/air mixture upstream into the passage ducts of the first group;
a second infeed configured and arranged to introduce air upstream into the passage ducts of the second group;
a combustion chamber downstream of the at least one catalyzer unit;
wherein the first infeed has at least two chambers separated from one another, including a first chamber having a fuel supply line and a second chamber having an air supply line;
and
wherein the first chamber and the second chamber each include connecting lines issuing in pairs in the passage ducts of the first group.

4 more elements

Dependencies are inferred from the claim text.

Method and device for the combustion of hydrogen in a premix burner

Life of this patent

Method and device for the combustion of hydrogen in a premix burner

Life of this patent

Abstract

Claims22