(under subclass 177) Processes wherein the mineral oil is treated with added hydrogen.
(1) Note. The hydrogen may be added as a free gas or a hydrogen rich material may be used under such conditions as to generate or liberate hydrogen (hydrogen donor processes).
SEE OR SEARCH THIS CLASS, SUBCLASS:
89, for processes of refining mineral oil with hydrogen combined with chemical conversion of the oil.
209+, for processes of desulfurizing mineral oils wherein hydrogen is used.
