.~ Including apparatus purging, cleaning or accretion preventing
(under subclass 1) Process including a procedure for flushing out, dislodging, or preventing collection of undesirable material in heating apparatus.
SEE OR SEARCH THIS CLASS, SUBCLASS:
50, for apparatus under the class definition including a protector, cleaner or support for a condition sensor: subclass 74 for heating apparatus with a drip, spill or leakage collector: and subclass 75 for heating apparatus having cleaning means.
SEE OR SEARCH CLASS
341+, for method of operating solid fuel furnaces or refuse incinerators. 134, Cleaning and Liquid Contact With Solids,
1, 42 for a residual process of cleaning, or contacting a solid with a liquid.
165, Heat Exchange,
5, for the cleaning of a regenerator.
201, Distillation: Processes, Thermolytic,
2, for a process including a step of cleaning an apparatus in which a solid carbonaceous material is heated.
2, for a process of decarbonizing, cleaning or purging a combustion device.