| 摘要 |
The present invention generates a fuel gas which generates limited amounts of nitrogen oxides at the time of combustion, drastically increases a combustion duration time of a fuel per unit volume and can effect high temperature combustion. A primary fuel gas generated by burning a liquid fuel such as an alcohol in a fuel layer (20) of a combustion chamber (18) is mixed with a pressure air jetted from an air nozzle (16) inside a gas stream pipe (14). At this time, surrounding air entrapped in jet air forms a swirl stream. The flow passage sectional area of the primary fuel gas is first contracted with respect to the flow passage sectional area of jet air from the air nozzle (16) and is then increased, so that eddy flows occur at portions where the changes of the flow passage sectional area occur. Hydrocarbons in the primary fuel gas are decomposed into carbon and hydrogen having high activity due to the reaction of the primary fuel gas with air, and a fuel gas capable of combustion with less nitrogen oxides at a high temperature is produced. |
