Burner system

FIG. 27-56 Schematic of a regenerative burner system. (Notth American Manufactuting Co.)... 

Depending on the burner system employed, some form of a flue system is required to remove the products of combustion from the appliance to the at mosphere. 

Fluidized-bed process incinerators have been used mostly in the petroleum and paper industries, and for processing nuclear wastes, spent cook liquor, wood chips, and sewage sludge disposal. Wastes in any physical state can be applied to a fluidized-bed process incinerator. Au.xiliary equipment includes a fuel burner system, an air supply system, and feed systems for liquid and solid wastes. The two basic bed design modes, bubbling bed and circulating bed, are distinguished by the e.xtent to which solids are entrained from the bed into the gas stream. 

The burner system of the gas- and oil-burning boilers are operating under similar draft conditions and preferably in the same room ... 

When the AAS measurements have been completed, aspirate de-ionised water for several minutes to ensure thorough cleaning of the nebuliser-burner system. 

The purpose of the nebuliser-burner system is to convert the test solution to gaseous atoms as indicated in Fig. 21.2, and the success of flame photometric methods is dependent upon the correct functioning of the nebuliser-burner system. It should, however, be noted that some flame photometers have a very simple burner system (see Section 21.13). 

A -Benzoyl-i V-phenyl hydroxylamine 440 Nebuliser-burner system 785 Neocuproin 178... 

Figure 4.1.2 is a photograph of a coimterflow burner assembly. The experimental particle paths in this cold, nonreacting, counterflow stagnation flow can be visualized by the illumination of a laser sheet. The flow is seeded by submicron droplets of a silicone fluid (poly-dimethylsiloxane) with a viscosity of 50 centistokes and density of 970 kg/m, produced by a nebulizer. The well-defined stagnation-point flow is quite evident. A direct photograph of the coimterflow, premixed, twin flames established in this burner system is shown in Figure 4.1.3. It can be observed that despite the edge effects.

Photograph of a counterflow burner system and the nonreacting flow visualization using a laser sheet. 

To obtain hygienic combustion, it is essential to adjust the equivalence ratio 0 to an ideal value. This value characterises the ratio of the fuel quantity needed for a stoichiometric combustion to the fuel quantity supplied. In most of the common gas appliances, the air supply slightly exceeds the amount of air needed for complete stoichiometric combustion. The exact value for the surplus of air - often referred to as lambda (X) - depends on the configuration of the burner system in question. 

This new burner concept (see Fig. 3.26) was tested with very positive results. The new control reduces emissions and improves the ignition behavior by adjusting the gas supply to the actual air volume. At the same time, the performance of the burner system can be adapted within a wide heat load range without increasing the emission of pollutants, as the sensor keeps the gas-to-air ratio always constant. 

Fired heaters are extensively used in the oil and gas industry to process the raw materials into usable products in a variety of processes. Fuel gas is normally used to fire the units which heat process fluids. Control of the burner system is critical in order to avoid firebox explosions and uncontrolled heater fires due to malfunctions and deterioration of the heat transfer tubes. Microprocessor computers are used to manage and control the burner system. 

FIGURE 4.40 Flame stability diagram for an operating fuel gas-air mixture burner system. 

Viscosity is an important property of residual fuel oils, as it provides information on the ease (or otherwise) with which a fuel can be transferred from storage tank to burner system under prevailing temperature and pressure conditions. Viscosity data also indicate the degree to which a fuel oil needs to be preheated to obtain the correct atomizing temperature for efficient combustion. Most residual fuel oils function best when the burner input viscosity lies within a certain specified range. 

T0733 Sonotech, Inc., Cello Pulse Combustion Burner System T0746 STC Remediation, Inc., Solidification/Stabilization Technology T0756 Supercritical Water Oxidation—General... 

T0733 Sonotech, Inc., Cello Pulse Combustion Burner System... 

T0733 Sonotech, Inc., Cello Pulse Combustion Burner System T0736 SOUND/epic, Dispersion by Chemical Reaction (DCR) Technology T0746 STC Remediation, Inc., Solidification/Stabilization Technology T0747 SteamTech Environmental Services and Integrated Water Resources, Inc., Steam-Enhanced Extraction (SEE)... 

The Pyretron thermal destruction technology is a burner system designed to be used in conjunction with any conventional transportable or fixed rotary kiln incinerator and is intended to increase the efficiency of conventional incineration. The commercially available technology controls the heat input during incineration by controlling excess oxygen available to oxidize hazardous waste. 

The Cello pulse combustion burner system is an ex sitn technology for the enhancement of combustion devices. Cello pulse combustion can be incorporated into the constrnction of most new combustion devices or can be retrofit to most existing incinerators, boilers, and dryers. The system can be used to treat any material typically treated in a conventional incinerator, including soils, sludges, medical wastes, and liquids contaminated with volatile organic compounds (VOCs) or semivolatile organic componnds (SVOCs). The CeUo system has been installed in commercial systems and is commercially available. 

This value helps predict the deposit-forming tendency of fuel. Deposits in oil burner systems can form hot spots on surfaces which can lead to stress, distortion, and even cracking of system components. 

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