Process and apparatus for using steam cracked tar as steam...

Details Process and apparatus for using steam cracked tar as steam... Process and apparatus for using steam cracked tar as steam...

2008-04-30

2010-10-19

Hill, Jr., Robert J (Department: 1797)

Mineral oils: processes and products

Chemical conversion of hydrocarbons

Plural serial stages of chemical conversion

C208S049000, C208S068000, C208S106000, C208S130000, C208S132000

Reexamination Certificate

active

07815791

ABSTRACT:
A process and apparatus are provided for steam cracking heavy feeds, including steam cracked tars. The invention heats a steam cracked tar feed to provide a depolymerized steam cracked tar containing lower boiling molecules than the steam cracked tar feed, hydrogenates the depolymerized steam cracked tar using a hydrogenating catalyst, e.g., a downward flow fixed bed hydrotreater, to provide a hydrogenated steam cracked tar. At least a portion of the hydrogenated steam cracked tar is steam cracked in a steam cracking furnace comprising a convection zone and a radiant zone.

REFERENCES:
patent: 3310484 (1967-03-01), Mason et al.
patent: 3384448 (1968-05-01), Mason et al.
patent: 3691058 (1972-09-01), Hamner et al.
patent: 4233138 (1980-11-01), Rollmann et al.
patent: 4257871 (1981-03-01), Wernicke et al.
patent: 4310409 (1982-01-01), Wernicke et al.
patent: 6149800 (2000-11-01), Iaccino 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: 2007/0090019 (2007-04-01), Keusenkothen et al.
A.G. Goossens, Hydrocracker Feeds Olefin Unit, Hydrocarbon Processing, Nov. 1986, Vo. 65, No. 11, pp. 84-86.
U.S. Appl. No. 12/023,204, filed Jan. 31, 2008, entitled Process and Apparatus for Upgrading Steam Cracked Tar, Inventor(s): John D. Y. Ou, et al.
U.S. Appl. No. 12/099,971 filed Apr. 9, 2008, entitled Process and Apparatus for Upgrading Steam Cracked Tar Using Steam, Inventor(s): John D. Y. Ou, et al.

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