Burners lighting

Before lighting burners in a piece of fired equipment that has been idle or offline for any time or whose burners have become extinguished during operation, it is vital to first purge the firebox of hydrocarbons and combustibles or explosive mixtures. Here is a method as outlined to me by a prominent burner manufacturing company ... 

The solvents, also, are volatile and extremely flammable. Always measure quantities in a hood. No lighted burners or flames should be in the vicinity of your work. In case of fire, use a C02 extinguisher. 

Prior to either of these steps, fourteen of the twenty burners of the combustion furnace are lighted (Note 4) and tiles are placed over the lighted burners, which finally must be adjusted to yield a maximum temperature. The first two and last four burners are unused. 

One gram of powdered picric acid and as much by volume of litharge (PbO) are mixed carefully on a piece of paper by turning the powders over upon themselves (not by stirring). The mixture is then poured in a small heap in the center of a clean iron sand-bath dish. This is set upon a tripod, a lighted burner is placed beneath it, and the operator retires to a distance. As soon as the picric acid melts and lead picrate forms, the material explodes with an astonishing report. The dish is badly dented or possibly punctured. 

II. Filter the contents of the flask into a casserole or evaporating dish, adding a little warm water beforehand, if the contents is solid. Evaporate to dryness in the hood over a free flame as long as much liquid remains. As the residue approaches pasty consistency, add a little water and continue the evaporation. If a casserole is used, move it about rapidly to avoid spattering. If an evaporating dish is used, stand it on a gauze-covered support and move the lighted burner underneath. Heat the residue until no fumes of hydrochloric add are evolved. Dissolve some of the residue in distilled water and test portions for a ) a carbonate, (p) a chloride, (c) a calcium compound (see Exp. 29). If a calcium compound is found, confirm the observation thus —... 

Standard operating procedures An SOP describes a generic set of instmctions for tasks such as starting pumps, lighting burners, or filling vessels. The SOPs can be used as the foundation of specific procedures. For example, the SOP, How to start a centrifugal pump can be used as the basis for the specific procedure, How to start centrifugal pump, P-100. ... 

Hazards associated with lighting burners Exceeding boiler temperatures or pressures Hazards associated with using water treatment chemicals Error with valve line up resulting in explosion or fire... 

FIGURE 7.3 The Schema of a flare with scrubber dynamic 1 - scrubber dynamic 2 - governor valves 3 - the ignite burner, 4 - a pilot-light burner, 5 - a torch pipe / - waste gas // - fuel gas III - a condensate. 

Light each pilot or burner in the same manner as the first one. Never light one burner from another to do so invites explosion. Increase the fuel gas flow with the control valve or control valve bypass to maintain steady gas pressure and stable flames. Inspect the firebox frequently. A lighted burner may go out in a cold firebox. 

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