(under subclass 125) Processes wherein cracking takes place in the presence of added inert solids.
(1) Note. Many processes classified herein are directed to cracking in the presence of heat carriers which may cause formation of coke in addition to lighter hydrocarbon products. The heat carriers may be coke solids or inert refractory materials. The process is generally known as "coking".
(2) Note. To be classified in this or indented subclasses the process must include (a) the treatment of a specific mineral oil identified by some definite physical or chemical property thereof, such as boiling range, specific gravity, etc., or (b) the use of a specifically identified solid material. Merely identifying the feed as a naphtha, as boiling within the gas oil range, or the use of solids of a particular size is not sufficient to cause classification of the process in this or indented subclass. Processes excluded are classified below in subclass 146.
SEE OR SEARCH THIS CLASS, SUBCLASS:
50+, for plural serial stage conversions wherein at least one of the conversions includes a coking of mineral oil.
146+, for manipulative contacting of mineral oils with solids (see (2) Note).
SEE OR SEARCH CLASS 196, Mineral Oils: Apparatus,
104+, for apparatus for coking a mineral oil and treating vapor products (e. g., fractionating the mineral oil product).
201, Distillation: Processes, Thermolytic,
23, for a process of coking a carbonaceous mixture including a minor amount of mineral oil.
202, Distillation: Apparatus, appropriate subclasses for apparatus for coking a mineral oil.
423, Chemistry of Inorganic Compounds,
449.1+, for manufacturing carbon by a chemical reaction.
