Chemistry of hydrocarbon compounds – Unsaturated compound synthesis – From nonhydrocarbon feed
Reexamination Certificate
2006-04-25
2006-04-25
Dang, Thuan D (Department: 1764)
Chemistry of hydrocarbon compounds
Unsaturated compound synthesis
From nonhydrocarbon feed
C585S639000, C585S640000, C585S923000, C585S920000
Reexamination Certificate
active
07034196
ABSTRACT:
Disclosed is a method and apparatus for reducing the amount of metal catalyzed side-reaction byproducts formed in the feed vaporization and introduction system of a methanol to olefin reactor system by monitoring and/or maintaining the temperature of at least a portion of the feed vaporization and introduction system and/or of the feedstock contained therein below about 400° C., 350° C., 300° C., 250° C., 200° C. or below about 150° C. The temperature can be maintained in the desired range by jacketing at least a portion of the feed vaporization and introduction system, such as at least a portion of the feed introduction nozzle, with a thermally insulating material or by implementing a cooling system.
REFERENCES:
patent: 3847793 (1974-11-01), Schwartz et al.
patent: 3969426 (1976-07-01), Owen et al.
patent: 4035430 (1977-07-01), Dwyer et al.
patent: 4053534 (1977-10-01), Mitchell et al.
patent: 4058576 (1977-11-01), Chang et al.
patent: 4399305 (1983-08-01), Schreck
patent: 4529576 (1985-07-01), Sancier
patent: 4542252 (1985-09-01), Graziani et al.
patent: 4814517 (1989-03-01), Trubac
patent: 4849575 (1989-07-01), Lewis
patent: 5573990 (1996-11-01), Wang et al.
patent: 5972429 (1999-10-01), Bayer et al.
patent: 6049017 (2000-04-01), Vora et al.
patent: 6121504 (2000-09-01), Kuechler et al.
patent: 6139649 (2000-10-01), Wynns
patent: 6165286 (2000-12-01), Bayer et al.
patent: 6166282 (2000-12-01), Miller
patent: 6187983 (2001-02-01), Sun
patent: 6403854 (2002-06-01), Miller et al.
patent: 0450593 (1991-10-01), None
patent: 0617112 (1994-09-01), None
patent: 1090136 (1989-04-01), None
patent: 02/00579 (2002-01-01), None
Baker, et al., “Nickel-Base Material Solutions To Metal Dusting Problems,”Corrosion, Paper No. 02394, pp. 1-16, (2002).
Helmenstine, “Why is Stainless Steel Stainless!,” [online], Chemistry, [retrieved on Jul. 3, 2002]. Retrieved from the Internet, <http://chemistry.about.com/library/weekly/aa071201a.htm>, pp. 1-2.
The Hendrix Group, A Corrosion And Materials Technology Site, “Chemical Compositions Of Stainless Steels,” [online], [retrieved on Jul. 3, 2003]. Retrieved from the Internet, <http://www.hghouston.com/ss—comp.html>, pp. 1-2.
“Stainless Steel Composition” Chevron, [online], [retrieved on Jul. 3, 2002]; can be accessed at: <http://www.sapiens.itgo.com/conversion—tables/stainless—steel—composition.htm>, p. 1.
“Alon Surface Technologies,” [online], [retrieved on Jul. 3, 2002]. Retrieved from the Internet, http://www.alon.com/<, p. 1 of 1.
George Yaluris, Ph.D., et al,The Effects of FE Poisoning on FCC Catalysts, National PetroChemical & Refiners Association, (2001), pp. 1-26.
Scott K. Purnell, et al,A Comprehensive Approach to Catalyst Design for Resid Applications, National PetroChemical & Refiners Association, (2003), pp. 1-22.
Perry et al.,Chemical Engineer's Handbook, 5thEdition, McGraw-Hill Book Co., New York pp. 3-219, 11-48, 20-65 to 20-66, and 23-73 to 23-74 (1973).
Clem Kenneth Ray
Vaughn Stephen N.
White Jeffrey L.
Xu Teng
Dang Thuan D
ExxonMobil Chemical Patents Inc.
LandOfFree
Method and apparatus for reducing decomposition byproducts... does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Method and apparatus for reducing decomposition byproducts..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method and apparatus for reducing decomposition byproducts... will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-3568985