Process and apparatus for cracking hydrocarbons to lighter hydrocarbons
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United States of America Patent
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Sep 22, 2020
Grant Date -
May 30, 2019
app pub date -
Nov 30, 2017
filing date -
Nov 30, 2017
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Abstract
A process and apparatus for catalytically cracking fresh heavy hydrocarbon feed to produce cracked products is disclosed. A fraction of the cracked products can be obtained to re-crack it in a downer reactor. The downer reactor may produce high selectivity to light olefins. Spent catalyst from both reactors can be regenerated in the same regenerator.
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