Method for control of instability in a de-ethanizer tower in fluid catalytic cracking units and delayed coking units

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United States of America Patent

PATENT NO 8568584
APP PUB NO 20100288674A1
SERIAL NO

12635210

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Abstract

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A method is described for controlling instability of operation in a de-ethanizer tower (13) in the gas recovery unit in fluid catalytic cracking units and delayed coking units. The method comprises the step of intervening in the de-ethanizer tower (13) when instability occurs in it, and adjusting the material balance of water in such a way that the excess of water in the feed load stream (9) is removed only as an azeotrope. The intervention is performed by introducing into the feed load stream (9) of the de-ethanizer tower (13) a volume fraction (18) of a flow of hydrocarbon, which may be either dry hydrocarbons or hydrocarbons with a low level of water content.

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Patent Owner(s)

Patent OwnerAddress
PETROLEO BRASILEIRO S A - PETROBRASAV REPÚBLICA DO CHILE N 65 CENTRO RIO DE JANEIRO 2003912

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Almeida, Mario de Sousa Rio de Janeiro, BR 1 0
Barros, Francisco Carlos da Costa Nova Iguacu, BR 3 6
Costa, Claudine Toledo Alvares da Silva Niteroi, BR 1 0
Marques, Neyde Alexandra Fraga Rio de Janeiro, BR 1 0

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