.~ Including the flowing or circulating of particulate heat carrier
(under subclass 1) Process including a step of moving particulate heat storage material as a flowing stream.
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215, for apparatus in which a heat generator heats a fluent mass of solid heat carrying or storing pebbles or particles.
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208, Mineral Oils: Processes and Products
127, for mineral oil cracking process using a suspension system of inert materials and subclasses 146+ for a process of chemical conversion of mineral oil involving solids contacting and mixing. See the collected notes of this subclass for related fields for search.