Delayed coking of a heat-treated ethylene tar

(19)

(11)

EP 0 090 897 A3

(12)	EUROPEAN PATENT APPLICATION

(88)	Date of publication A3:
	20.06.1984 Bulletin 1984/25

(43)	Date of publication A2:
	12.10.1983 Bulletin 1983/41

(21)	Application number: 82305707

(22)	Date of filing: 27.10.1982

(84)	Designated Contracting States:
	DE FR GB NL

(30)

Priority:

05.04.1982 US 365723

(71)	Applicant: Conoco Inc.
	()

(72)	Inventor:
	Romine, Hugh E. ()

(54)	Delayed coking of a heat-treated ethylene tar

(57) Ethylene tar from a steam stripper ethylene process is heat soaked in a hydrogen donor solvent and then utilized as a premium coking feedstock component. The process reduces the amount of heavy asphaltenes present in the ethylene tar.

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