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

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

2008-04-09

2010-11-23

Caldarola, Glenn A (Department: 1797)

Mineral oils: processes and products

Chemical conversion of hydrocarbons

Plural serial stages of chemical conversion

C208S049000, C208S067000, C208S072000, C208S106000, C208S132000

Reexamination Certificate

active

07837859

ABSTRACT:
A process and apparatus are provided for upgrading steam cracked tars. The invention also relates to a steam cracking process and apparatus for reducing the yields of tars produced from steam cracking while increasing yields of higher value products, heating, in the presence of steam, cooled steam cracker tar containing asphaltenes, to a temperature, e.g., above about 300° C., which is sufficient to convert at least a portion of the steam cracked tar to lower boiling molecules. The resulting heat and steam-treated tar can be separated into gas oil, fuel oil and tar streams.

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Liu, Y. et al. (2002). Energy and Fuels, 16, 842-846.
U.S. Appl. No. 12/023,204, filed Jan. 31, 2008, entitled “Process and Apparatus for Upgrading Steam Cracked Tar”, John D. Y. Ou, et al.

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