Refrigeration – Cryogenic treatment of gas or gas mixture – Separation of gas mixture
Patent
1997-11-04
1999-04-06
Capossela, Ronald
Refrigeration
Cryogenic treatment of gas or gas mixture
Separation of gas mixture
62619, F25J 302
Patent
active
058903771
ABSTRACT:
A process for separating the components of a feed gas containing methane and heavier hydrocarbons is shown in which a recycle stream is used to satisfy the heat requirements of the process while at the same time providing a reflux to a demethanizer column to improve product recovery. The inlet gas stream is fed to a separator without first splitting the stream. A first vapor portion and a first liquid portion are produced by the separator with the first vapor portion being supplied, after expansion, to the demethanizer column at an intermediate feed position. The first liquid portion from the separator is expanded and supplied to the demethanizer column at a relatively lower feed position. Overhead vapor is removed from the column and compressed to a higher pressure. The resulting compressed recycle stream is cooled sufficiently to substantially condense it and is supplied as reflux to the demethanizer column at a top feed position.
REFERENCES:
patent: 4851020 (1989-07-01), Montgomery, IV
patent: 4889545 (1989-12-01), Campbell et al.
patent: 4895584 (1990-01-01), Buck et al.
patent: 5566554 (1996-10-01), Vijayaraghavan et al.
patent: 5568737 (1996-10-01), Campbell et al.
ABB Randall Corporation
Capossela Ronald
Gunter Jr. Charles D.
LandOfFree
Hydrocarbon gas separation process does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Hydrocarbon gas separation process, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Hydrocarbon gas separation process will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1362011