Recycle classifier for retorting oil shale

Recycling aerated scavenged middlings to conditioning step of ho

Reducing metal corrosion of hydrocarbons using acidic...

Reducing metal corrosion of hydrocarbons using acidic...

Reduction in pour point of shale oil

Refinery anti-foulant - asphaltene dispersant

Reformulated diesel fuel

Reformulated reduced pollution diesel fuel

Refrigerator oil composition

Regeneration of ZnC12

Removal of nitrogen and sulfur from oil-shale

Removal of particulates from pyrolytic oil

Rerefining of used motor oils

Retorting oil shale with iron oxide impregnated porous pellets

Retorting process

Retorting process for hydrocarbonaceous solids

Retorting process utilizing a flexible, helical shaped conveyor

Rubber process oil and production process thereof

Self-adhesive carbonaceous grains and process for producing high

Separating organic material from tar sands or oil shale