Distillation of used motor oil with distillate vapors
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
May 7, 2019
Grant Date -
May 12, 2016
app pub date -
Jan 5, 2016
filing date -
Jul 15, 2011
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
A process and apparatus for re-refining used lubricating oil (ULO) having thermally unstable additives such as zinc compounds. ULO is mixed with a superheated distillate which may be a recycle stream, an outside stream, or combination, then charged to a vacuum flash or fractionator, to produce an overhead vapor and a residual fraction comprising additives and/or decomposition products thereof. Overhead vapor is condensed to yield a liquid lubricant boiling range product. Superheating may occur in a fired heater, heat exchanger or combination. Mixing of superheated fluid and ULO may occur in a pipe in turbulent flow and/or an in line mixer. Energy efficiency is improved by heat exchanging ULO feed with vapor or liquid product streams. An aromatic rich and thermally stable outside stream such as FCC LCO can be readily superheated. Recovered lubricant boiling range material can be recycled, used as a lube stock or for FCC feed.
First Claim
Family
International Classification(s)
- [Classification Symbol]
- [Patents Count]
Cited Art Landscape
Patent Citation Ranking
Advertisement
Advertisement
Advertisement
Recipient Email Address
Recipient Email Address
Comment
Recipient Email Address
Add to Portfolio(s)
To add this patent to one, or more, of your portfolios, simply click the add button.
This Patent is in these Portfolios:
Add to additional portfolios:
Last Refreshed On:
Changes done successfully