A package boiler of unitary construction.

摘要

A package boiler (10) of unitary construction embodying based on the particular pressure and temperature conditions required thereof a predetermined standard profile selected from a plurality of standard profiles collectively capable of providing within a range of design pressures up to 1050 psig and a range of design superheater outlet temperatures up to 750 degrees F steam production within a range of 20,000 to 180,000 pounds per hour, and embodying based on the nature of the fuel to be burned therewithin a front wall (14, 14') of predetermined construction selected from front walls (14) of rigidized ceramic fiber for use when the fuel being burned therewithin is light oil and natural gas, front walls (14) of heavy castable refractory for use when the fuel being burned therewithin is heavy oil and other special fuels, and front walls (14') that are fully water-cooled.