Chemistry of hydrocarbon compounds – Saturated compound synthesis – By isomerization
Patent
1998-05-04
1999-12-28
Griffin, Walter D.
Chemistry of hydrocarbon compounds
Saturated compound synthesis
By isomerization
585738, 585739, 585750, 585820, 585826, C07C 513, C07C 712
Patent
active
060084278
ABSTRACT:
A method providing enhanced heat integration in isomerization processes having an isomerization reactor operating at a temperature less than about 232.degree. C. (450.degree. F.) and an adsorption zone operating at a temperature greater than about 260.degree. C. (500.degree. F.) has been developed. The method begins with flowing a fresh feed stream containing normal and non-normal hydrocarbons to either the isomerization reactor or the adsorption zone. A variable mass flow desorption effluent containing at least normal hydrocarbons is flowed to the isomerization reactor to form a reactor effluent containing normal hydrocarbons and isomerized non-normal hydrocarbons. The reactor effluent is cooled and separated into an adsorber feed stream and a hydrogen purge gas which are each conducted to an adsorption zone. In the adsorption zone, the normal hydrocarbons are adsorbed and the non-normal hydrocarbons are withdrawn and collected. The normal hydrocarbons are then desorbed from the adsorption zone using the hydrogen purge gas to produce the desorption effluent. The adsorber feed stream, the hydrogen purge gas, or both, are heat exchanged with the desorption effluent so that the desorption effluent flowing into the reactor is at about the operating temperature of the reactor and the adsorber feed stream, the hydrogen purge gas, or both, are partially heated. The partially heated adsorber feed stream, hydrogen purge gas, or both, are further heated using a controlled variable heat providing stream such as a steam or hot oil stream so that the temperature of the adsorber feed stream and hydrogen purge gas flowing into the adsorption zone are closer to the operating temperature of the adsorption zone.
REFERENCES:
patent: 4210771 (1980-07-01), Holcombe
patent: 4709117 (1987-11-01), Gray, Jr.
patent: 4929799 (1990-05-01), Holcombe et al.
patent: 5036035 (1991-07-01), Baba et al.
patent: 5120898 (1992-06-01), Baba et al.
Bullock In Suk
Griffin Walter D.
Maas Maryann
McBride Thomas K.
Molinaro Frank S.
LandOfFree
Total isomerization process with enhanced heat integration does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Total isomerization process with enhanced heat integration, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Total isomerization process with enhanced heat integration will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-2383573