EP 0181066 A3 19880720 - PROCESS FOR DEWAXING HEAVY DISTILLATES AND RESIDUAL LIQUIDS
Title (en)
PROCESS FOR DEWAXING HEAVY DISTILLATES AND RESIDUAL LIQUIDS
Publication
Application
Priority
US 66579384 A 19841029
Abstract (en)
[origin: EP0181066A2] Process for dewaxing heavy distillate and residual feed. Easily converted waxes are partially removed in a first catalytic dewaxing step, and the resulting product is separated to remove the light ends. The heavy liquid fraction, which contains difficult to convert waxes, such as poly-branched or mid-methyl branched paraffin waxes, is then introduced into a second dewaxing stage, where the liquid stream is dewaxed to a specification pour point. The process may be implemented via double pass dewaxing in existing units or by passing through two consecutive dewaxing units. Improvements are due to a decoupling of temperature requirements in each reaction step and removal of cracked products which inhibit dewaxing and accelerate aging in the second dewaxing stage.
IPC 1-7
IPC 8 full level
C10G 73/02 (2006.01); C10G 45/64 (2006.01); C10G 55/06 (2006.01); C10G 65/04 (2006.01)
CPC (source: EP)
C10G 45/64 (2013.01); C10G 55/06 (2013.01); C10G 65/043 (2013.01)
Citation (search report)
- [X] EP 0072220 A1 19830216 - MOBIL OIL CORP [US]
- [A] US 3431194 A 19690304 - BARTOK WILLIAM, et al
Designated contracting state (EPC)
BE DE FR GB IT NL
DOCDB simple family (publication)
EP 0181066 A2 19860514; EP 0181066 A3 19880720; AU 4685985 A 19860508; AU 586980 B2 19890803; CA 1253107 A 19890425; JP S61108693 A 19860527; ZA 856718 B 19870429
DOCDB simple family (application)
EP 85306342 A 19850906; AU 4685985 A 19850829; CA 491139 A 19850919; JP 24071885 A 19851029; ZA 856718 A 19850902