Patent ID: 9638412
Date: 2017-05-02
CPC Classifications: B01J,F23C,Y02E

Claim:
1. An improved method for chemical looping combustion of at least one liquid hydrocarbon feed, comprising: atomizing the at least one liquid hydrocarbon feed with an atomization gas so as to form an atomized liquid hydrocarbon feed comprising finely dispersed liquid droplets in the atomization gas and to feed it into a substantially elongated and substantially vertical metal oxide particle transport zone, the metal oxide particle transport zone being provided upstream from a combustion zone comprising at least one dense-phase fluidized bed, the metal oxide particle transport zone opening into the at least one dense-phase fluidized bed of the combustion zone; feeding metal oxide particles to the metal oxide particle transport zone; vaporizing the atomized liquid hydrocarbon feed when in contact with the metal oxide particles in the transport zone to provide a vaporized hydrocarbon feed, the operating conditions in the transport zone being so selected that the superficial gas velocity in the transport zone after vaporization of the atomized liquid hydrocarbon feed is higher than the transport velocity of the metal oxide particles allowing the metal oxide particles to be transported while minimizing the energy dissipation in form of pressure drop; sending all of the effluents from the transport zone to the at least one dense-phase fluidized bed of the combustion zone, the vaporized hydrocarbon feed and metal oxide particles flowing together in the same direction into a first portion of the at least one dense-phase fluidized bed of the combustion zone, the combustion zone allowing reduction of the metal oxide particles.