Mineral oils: processes and products – Chemical conversion of hydrocarbons – With subsequent treatment of products
Reexamination Certificate
2007-12-25
2007-12-25
Nguyen, Tam M. (Department: 1764)
Mineral oils: processes and products
Chemical conversion of hydrocarbons
With subsequent treatment of products
C208S103000, C208S104000, C208S354000, C208S358000, C585S809000, C585S802000, C203S071000, C203S074000, C203S075000, C203S081000, C203S082000, C203S084000
Reexamination Certificate
active
10393460
ABSTRACT:
This invention is an improved distillation sequence for the separation and purification of ethylene from a cracked gas. A hydrocarbon feed enters a C2 distributor column. The top of the C2 distributor column is thermally coupled to an ethylene distributor column, and the bottoms liquid of a C2 distributor column feeds a deethanizer column. The C2 distributor column utilizes a conventional reboiler. The top of the ethylene distributor is thermally coupled with a demethanizer column, and the bottoms liquid of the ethylene distributor feeds a C2 splitter column. The ethylene distributor column utilizes a conventional reboiler. The deethanizer and C2 splitter columns are also thermally coupled and operated at a substantially lower pressure than the C2 distributor column, the ethylene distributor column, and the demethanizer column. Alternatively, a hydrocarbon feed enters a deethanizer column. The top of the deethanizer is thermally coupled to an ethylene distributor column, and the ethylene distributor column utilizes a conventional reboiler. The top of the ethylene distributor column is thermally coupled with a demethanizer column, and the bottoms liquid of the ethylene distributor column feeds a C2 splitter column. The C2 splitter column operates at a pressure substantially lower than the ethylene distributor column, the demethanizer column, and the deethanizer column.
REFERENCES:
patent: 2295256 (1942-09-01), Brugma
patent: 5602290 (1997-02-01), Fallon
patent: 5675054 (1997-10-01), Manley et al.
Eng Wayne W. Y.
Foral Michael
Lee Guang-Chung
Logsdon Jeffrey S.
Papadopoulos Christos G.
Ineos USA LLC
Nguyen Tam M.
Yusko David P.
LandOfFree
Distillation sequence for the purification and recovery of... does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Distillation sequence for the purification and recovery of..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Distillation sequence for the purification and recovery of... will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-3882611