Economic combinative solvent and catalytic dewaxing process empl

Details Economic combinative solvent and catalytic dewaxing process empl Economic combinative solvent and catalytic dewaxing process empl

1985-12-09

1986-11-11

Metz, Andrew H.

Mineral oils: processes and products

Chemical conversion of hydrocarbons

With preliminary treatment of feed

208 18, 208 27, 208 33, C10G 5302

Patent

active

046221301

ABSTRACT:
This invention discloses an economic series flow dewaxing scheme having a first solvent dewaxing step followed by a catalytic dewaxing step. The use of methylisopropyl ketone as a key component in the solvent dewaxing step produces a solvent dewaxed effluent with an intermediate pour point which may be readily catalytically dewaxed to a pour point suitable for lubricant applications. The catalytic dewaxing unit can also be used to recover lost oil yield from the soft wax product of the solvent dewaxing zone (sometimes referred to as footsoil) and thereby sustain, if not increase, overall lubricating oil yield.

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