(under subclass 177) Processes which includes the step of controlling of the amount of reagent employed in the refining of the mineral oil.
(1) Note. Processes of control classified herein include more than the setting out of the amount of reagent employed. This subclass contains, for example, the step of controlling the rate of reagent introduction may be responsive to some condition of the feed as stopping the flow of the reagent when a determination is made that the amount of contaminant remaining is no longer harmful.
SEE OR SEARCH CLASS
137, Fluid Handling, particularly
2+, and 87.01+ for processes and apparatus for proportioning the flow of two or more fluids not otherwise provided for.
516, Colloid Systems and Wetting Agents; Subcombinations Thereof; Processes of Making, Stabilizing, Breaking, or Inhibiting, 113+, for compositions for or subcombination compositions for or breaking of or inhibiting of colloid systems (e.g., foam breaking, emulsion breaking, dispersion inhibiting, suspension settling, gel breaking, smoke suppressing, coagulating, flocculating), when generically claimed or when there is no hierarchically superior provision in the USPC for the specifically claimed art. Combinations of emulsion breaking and a treatment of the mineral oil provided for in Class 208 are classified in Class 208.
