METHOD OF PRODUCTION OF LIGHT OLEFINS IN CATALYTIC CRACKING UNITS WITH ENERGY DEFICIENCY
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United States of America Patent
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Issued Date -
Nov 3, 2011
app pub date -
Aug 28, 2009
filing date -
Aug 29, 2008
priority date (Note) -
Abandoned
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Abstract
The present invention relates to a method of production of light olefins, with the objective of maximizing the production of propylene and in particular ethylene by the use of a special catalyst containing high-silica zeolite, whose composition also includes a dehydrogenating metal, so as to generate light olefins and appreciable deposition of coke on the catalyst. Gains in selectivity for light olefins are observed, and at the same time the energy deficiency of catalytic cracking in petrochemical operations with light hydrocarbons is minimized, avoiding problems due to the need to burn heating oil in the catalyst regenerating section to make up for the energy deficit of the converter.
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