Two-stage process for converting residua to gasoline blendstocks and light olefins
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United States of America Patent
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Mar 5, 2002
Issued Date -
N/A
app pub date -
Dec 13, 2000
filing date -
Oct 14, 1999
priority date (Note) -
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Abstract
A two-stage process for converting petroleum residua and other low value oils to high valued gasoline blendstocks and light olefins. The first stage is comprised of a thermal process unit containing a reaction zone comprised of a horizontal moving bed of fluidized hot particles operated at temperatures from about 500 to 600.degree. C. and having a short vapor residence time, and the second stage is comprised of a catalytic conversion zone operated at a temperature of about 525.degree. C. to about 650.degree. C., and also having a short vapor residence time, preferably shorter than that of the first stage reaction zone.
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