Chemical apparatus and process disinfecting – deodorizing – preser – Chemical reactor – Including heat exchanger for reaction chamber or reactants...
Reexamination Certificate
2006-10-16
2008-12-30
Griffin, Walter D (Department: 1797)
Chemical apparatus and process disinfecting, deodorizing, preser
Chemical reactor
Including heat exchanger for reaction chamber or reactants...
C422S186220
Reexamination Certificate
active
07470409
ABSTRACT:
A process for reducing fouling during cracking of a hydrocarbon feedstock containing resid is provided which comprises: introducing a mixture stream of heated hydrocarbon feedstock mixed with steam to a flash/separation apparatus to form i) a vapor phase at its dew point which partially cracks causing a temperature decrease and partial condensation of said vapor phase in the absence of added heat, and ii) a liquid phase. Partial condensation is reduced by adding a heated vaporous diluent, e.g., light hydrocarbon or superheated steam, to the flash/separation apparatus to an extent sufficient to at least partially compensate for the temperature decrease and to dilute and superheat the vapor phase, prior to removing the vapor phase as overhead for subsequent cracking and recovery of cracked product. An apparatus for carrying out the process is also provided.
REFERENCES:
patent: 1936699 (1933-11-01), Weaver
patent: 1984569 (1934-12-01), Cooke et al.
patent: 2091261 (1937-08-01), Alther
patent: 2158425 (1939-05-01), Ragatz
patent: 2893941 (1959-07-01), Kohfeldt et al.
patent: 3291573 (1966-12-01), Frescoln
patent: 3341429 (1967-09-01), Fondrk
patent: 3413211 (1968-11-01), Becraft et al.
patent: 3487006 (1969-12-01), Newman et al.
patent: 3492795 (1970-02-01), Guerrieri
patent: 3505210 (1970-04-01), Wallace et al.
patent: 3617493 (1971-11-01), Wirth et al.
patent: 3677234 (1972-07-01), Dutkiewicz
patent: 3718709 (1973-02-01), Simonetta
patent: 3900300 (1975-08-01), Lehman
patent: 4199409 (1980-04-01), Skraba
patent: 4264432 (1981-04-01), Gartside
patent: 4300998 (1981-11-01), Gartside
patent: 4311580 (1982-01-01), Bartholic
patent: 4361478 (1982-11-01), Gengler et al.
patent: 4400182 (1983-08-01), Davies et al.
patent: 4426278 (1984-01-01), Kosters
patent: 4543177 (1985-09-01), Murthy et al.
patent: 4615795 (1986-10-01), Woebcke et al.
patent: 4714109 (1987-12-01), Tsao
patent: 4732740 (1988-03-01), Woebcke et al.
patent: 4797197 (1989-01-01), Mallari
patent: 4840725 (1989-06-01), Paspek
patent: 4854944 (1989-08-01), Strong
patent: 4954247 (1990-09-01), Lipkin et al.
patent: 5096567 (1992-03-01), Paspek, Jr. et al.
patent: 5120892 (1992-06-01), Skraba
patent: 5190634 (1993-03-01), Fernandez-Baujin et al.
patent: 5468367 (1995-11-01), Dickakian et al.
patent: 5580443 (1996-12-01), Yoshida et al.
patent: 5817226 (1998-10-01), Lenglet
patent: 5910440 (1999-06-01), Grossman et al.
patent: 5948242 (1999-09-01), Ohsol et al.
patent: 6093310 (2000-07-01), Swan
patent: 6123830 (2000-09-01), Gupta et al.
patent: 6179997 (2001-01-01), Vedder, Jr. et al.
patent: 6190533 (2001-02-01), Bradow et al.
patent: 6210561 (2001-04-01), Bradow et al.
patent: 6303842 (2001-10-01), Bridges et al.
patent: 6376732 (2002-04-01), Ngan et al.
patent: 6632351 (2003-10-01), Ngan et al.
patent: 6743961 (2004-06-01), Powers
patent: 6939444 (2005-09-01), Carlson, Jr. et al.
patent: 7038008 (2006-05-01), Wettling et al.
patent: 2001/0016673 (2001-08-01), Bridges et al.
patent: 2003/0070963 (2003-04-01), Zimmermann et al.
patent: 2004/0004022 (2004-01-01), Stell et al.
patent: 2004/0004027 (2004-01-01), Spicer et al.
patent: 2004/0004028 (2004-01-01), Stell et al.
patent: 2004/0039240 (2004-02-01), Powers
patent: 2004/0054247 (2004-03-01), Powers
patent: 2005/0010075 (2005-01-01), Powers
patent: 2006/0094918 (2006-05-01), McCoy et al.
patent: 2007/0004952 (2007-01-01), McCoy et al.
patent: 2007/0090018 (2007-04-01), Keusenkothen et al.
patent: 1093351 (1960-11-01), None
patent: 0063448 (1982-10-01), None
patent: 1472280 (1967-03-01), None
patent: 199766 (1923-06-01), None
patent: 998504 (1965-07-01), None
patent: 1053751 (1967-01-01), None
patent: 1203017 (1970-08-01), None
patent: 1233795 (1971-05-01), None
patent: 2006259 (1977-10-01), None
patent: 2012176 (1977-11-01), None
patent: 7410163 (1975-04-01), None
patent: 1491552 (1989-07-01), None
patent: WO 01/55280 (2001-08-01), None
patent: 907394 (1991-07-01), None
Dennis A. Duncan and Vance A. Ham, Stone & Webster, “The Practicalities of Steam-Cracking Heavy Oil”, Mar. 29-Apr. 2, 1992, AlChE Spring National Meeting in New Orleans, LA, pp. 1-41.
ABB Lummus Crest Inc., (presentation) HOPS, “Heavy Oil Processing System”, Jun. 15, 1992 TCC PEW Meeting, pp. 1-18.
Mitsui Sekka Engineering Co., Ltd./Mitsui Engineering & Shipbuilding Co., Ltd., “Mitsui Advanced Cracker & Mitsui Innovative Quencher”, pp. 1-16.
“Specialty Furnace Design: Steam Reformers and Steam Crackers”, presented by T.A. Wells of the M.W. Kellogg Company, 1988 AIChE Spring National Meeting.
ExxonMobil Chemical Patents Inc.
Griffin Walter D
Young Natasha
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