Circular furnace piping

Exhibits 7-33 and 7 34 present simplified piping and instrumentation diagrams for a circular furnace. The furnace has 6-in inlet and outlet lines, with control valves, combination burners, and soot blowers in the... 

The lower level of the circular furnace is shown in Exhibits 7-37 through 7-39. In the radiant seaion, all piping should be grouped together for common sup-... 

Furnaces, also referred to as heaters, are one of the main pieces of equipment in a process complex. A furnace may raise the temperature of a gas or hydrocarbon liquid to meet specific processing needs or, in the case of pyrolysis and reformer furnaces, cause a chemical or physical change to the medium. A circular or box-type configuration is primarily used variations to each design are covered throughout this chapter. In addition, because of the various types of furnaces, this chapter covers some basics of furnace design and discusses how to approach a piping layout as it relates to maintenance, operation, and safety. 

This section details the piping layout of circular and box-type furnaces. Although such special features as snuffing steam are actually required for both heaters, they are explained for one application only. 

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