Oil burners

The success of preheater kiln systems led to precalciaer kiln systems. These units utilize a second burner to carry out calciaation ia a separate vessel attached to the preheater. The flash furnace (57), eg, utilizes preheated combustion air drawn from the clinker cooler and kiln exit gases and is equipped with an oil burner that bums about 60% of the total kiln fuel. The raw material is calciaed almost 95%, and the gases continue their upward movement through successive preheater stages ia the same manner as ia an ordinary preheater. 

Federal specifications. United States ASTM D 396 Fuel oil, burner... 

Oil Burners The structure of an oil flame is shown in Fig. 27-28, and Fig. 27-29 illustrates a conventional circiilar oil burner for use in boilers. A combination of stabilization techniques is used, typically including swirl. It is important to match the droplet trajectories to the combustion aerodynamics of a given burner to ensure stable ignition and good turndown performance. 

Insiilating refractories are used mainly in the heat-treating industiy for furnaces of the periodic type. They are also used extensively in stress-relieving furnaces, chemical-process furnaces, oil stills or heaters, and the combustion chambers of domestic-oil-burner furnaces. They usually have a hfe equal to that of the heavy brick that they replace. They are particularly smtable for constructing experi-... 

Both gas and oil-fired heating systems consist of several subsystems. The oil burner pump draws fuel... 

Trethwiey, Richard. (1994). This Old House Heating, Ventilation, and Air Conditioning. Boston Little, Brown. Weinberger, Herbert. (1992). Residential Oil Burners. Albany, NY Delmar Publishers. 

Oil fuel pipeline systems transfer oil from storage to the oil burner at specified conditions of pressure, viscosity, temperature and rate of flow. There can be considerable variety in the choice of system, but its design (particularly correct pipe sizing and temperature control) is most important if it is to function satisfactorily. 

Branch lines transfer oil from a ring main circuit to the oil-burning equipment. Where a residual oil fuel is to be used, there will be some cooling of the oil immediately adjacent to the pipe surfaces and this will show as a small increase in viscosity. To keep this variation to a minimum and so prevent any difficulties in atomization at the oil burner, care should be taken over the length and diameter of branch lines. Provision should always be made to isolate and drain branch lines. 

Unlike oil burners, there is no requirement to install a fire valve. With oil burners, this is usually met by having a fusible link sited over the burner and connected in a tensioned wire, which holds open a weighted valve in the oil supply so that the valve closes if the link melts. 

Performance on gas is normally limited in dual-fuel applications to that of the oil burner. In gas-only... 

Oil burners Type Size range Dual-fuel capability Fuel type Atomizing Atomizing pressure viscosity (bar) (cS) Turndown ratio Flame characteristics Main applications... 

Coal burners demand design consideration in all the aspects mentioned under gas and oil burners, but, in addition, need attention to the aspect of ash removal. The extent to which ash removal plays a part in the combustion system design often determines the ability of the burner to burn specific coals, particularly those with a high ash content. Principal types are as follows. 

Coil boilers are available as fully automatic package units, typically ranging in size from 15 to 300 boiler hp (500 lb/hr-10,000 lb/hr). Most designs employ forced circulation and a single, continuous spiral, helical-wound coiled tube that hangs inside the furnace. The coil is subjected to intense heat release from a gas or oil burner. 

Vaporizing oil burners prepare the air and fuel mixture by vaporizing the fuel by heating within the burner (gasification). 

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