Integrated oxygasification and hydropyrolysis process for producing liquid and gaseous hydrocarbons
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United States of America Patent
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Nov 15, 1983
Grant Date -
N/A
app pub date -
Jul 14, 1982
filing date -
Jul 14, 1982
priority date (Note) -
Expired
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Abstract
Oxygen and steam are mixed with partially reacted carbonaceous material within a first stage gasification zone to produce synthesis gas. The hot synthesis gas long with additional carbonaceous material is then reacted in a second stage hydropyrolysis zone. The reaction mixture is rapidly quenched and removed from the second stage thereby limiting the total second stage high temperature exposure time from about two milliseconds to about two seconds. The resultant products comprise char, gaseous and liquid hydrocarbons including high yields of benzene, toluene and xylene, and C.sub.1 -C.sub.4 gases. The first and second stages may consist of two separate reactors or two reactors integrated into a single vessel, each utilizing either an upflow or downflow configuration.
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