Patent ID: 8057218
Filing Date: 2011-11-15
Classification: F23D

Abstract:
1. A method for burning liquid fuels in a plant, using at least one injection nozzle protruding into a combustion chamber substantially at ambient pressure and in direct communication with external atmosphere through an exhaust conduit, the at least one injection nozzle adapted for being charged intermittently with a liquid fuel under pressure, and a supply of combustion air arranged in immediate proximity to a nozzle port of the at least one injection nozzle, comprising the steps of: introducing a first volume portion of air in the form of small diameter air bubbles into a liquid fuel in an amount required for an actual complete combustion of the liquid fuel, to form a liquid fuel/air mixture; formulating the liquid fuel/air mixture in at least one stage at a constant pressure of at least about 10 bar, and in the case of high-viscosity liquid fuels of at least about 100 bar, and supplying a volume of liquid fuel/air mixture intermittently as pulses to the injection nozzle; finely atomizing the liquid fuel/air mixture in an explosive manner using a constantly maintained injection pressure in the combustion chamber; maintaining the time duration and the quantity of the liquid fuel/air mixture admitted with each fuel injection pulse at a substantially constant heating value; adjusting the total quantity of liquid fuel/air mixture injected into the combustion chamber per unit of time, to determine heating power of the plant, by varying time duration between fuel/air injection pulses; and admitting intermittingly into the combustion chamber a remaining second and larger volume portion of combustion air, through an air nozzle annularly surrounding the nozzle port.