Use of zeolite SSZ-33 in hydrocarbon conversion processes

Use of ZSM-12 in catalytic cracking for gasoline octane improvem

Used lubricating oil reclaiming

Used oil re-refining

Using an antifoulant in a crude oil heating process

Utility conservation in hydrogen recycle conversion processes

Utilization of low rank coal and peat

Vacuum or steam stripping aromatic oils from petroleum pitch

Vacuum pipestill operation

Vanadium and nickel removal from petroleum utilizing organic per

Vanadium passivation in a hydrocarbon catalytic cracking process

Vanadium passivation in a hydrocarbon catalytic cracking process

Vanadium passivation in a hydrocarbon catalytic cracking process

Vapor phase water process for retorting oil shale

Vapor/liquid distributor and use thereof

Vapor/liquid distributor for fixed-bed catalytic reaction chambe

Vaporization of oil feed by addition of regenerated catalyst

Vaporization of used motor oil with non-hydrogenating...

Varying carbon on catalyst to magnetically separate high metals

Vented riser apparatus and method