Claims
- 1. A process which comprises:(a) blending a long residuum feedstock with from about 20 to about 50 wt. %, based on the amount of blend, of a short residuum feedstock having a boiling point range from about 565° C. to about 750° C.; (b) deasphalting the blend by solvent extraction to reduce the pentane insolubles of the blend to less than or equal to 1.2 (by ASTM D-893); and (c) thermally steam cracking the deasphalted blend to produce olefins.
- 2. The process of claim 1 wherein the deasphalted blend is hydrotreated to a hydrogen content greater than or equal to 12.5 wt. % prior to thermal steam cracking.
Parent Case Info
This is a continuation of application Ser. No. 08/951,041, filed Oct. 15, 1997 now abandoned.
US Referenced Citations (51)
Foreign Referenced Citations (2)
Number |
Date |
Country |
27 21 504 A1 |
Nov 1978 |
DE |
0 102 594 A2 |
Aug 1983 |
EP |
Non-Patent Literature Citations (2)
Entry |
Wernicke, et al., Pretreat feed for more olefins, Oct. 1979, pp. 137-142, Hydrocarbon Processing. |
Hydrocarbon Processing, Nov. 1986, Hydrocracker feed olefin unit, A.G. Goossens, Shell Int. Chemie Mij. BV, The Hague, The Netherlands. |
Continuations (1)
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Number |
Date |
Country |
Parent |
08/951041 |
Oct 1997 |
US |
Child |
09/544306 |
|
US |