Optimized process for the preparation of olefins by direct conversion of multiple hydrocarbons
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United States of America Patent
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Jul 16, 2002
Grant Date -
Dec 27, 2001
app pub date -
Oct 19, 1998
filing date -
Oct 20, 1997
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Abstract
A process for hydrocarbon conversion to prepare lower olefins such as ethylene, propylene, etc., and light aromatics by bringing hydrocarbons into contact with a solid granular catalyst. In order to optimize the reaction conditions and product structure and save the capital and operating costs, a piston flow reactor is used in this process and multiple groups of feed inlets, which allow hydrocarbons with different properties to enter the device from different feed inlets and proceed pyrolysis under different operation conditions, are set on the reactor. This process is usable for individual pyrolysis or co-feed pyrolysis of hydrocarbons from refinery gases, liquid hydrocarbons, to heavy residues.
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