Importance

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Abstract

A system includes a first reactor that may gasify a first feed to generate a first syngas. The first feed has a first particle size distribution (PSD₁). The system also includes a second reactor that may receive the first feed, a second feed, and at least a portion of the first syngas. The second reactor may gasify the second feed to generate additional syngas, and the second feed has a second particle size distribution (PSD₂) that is different from the first PSD. The second reactor includes an elutriation zone disposed on a first end of the second reactor. The elutriation zone may receive the first and second feed. The second reactor also includes a fluidized bed disposed at a second end of the second reactor that is substantially opposite the first end. The fluidized bed is fluidly coupled to the first reactor and may receive the portion of the first syngas via a syngas inlet. The system also includes a gas-solids separation section fluidly coupled to the first and second reactors. The gas-solids separation section may receive the first feed and partially reacted particles of the second feed from the elutriation zone and may feed a combined feed consisting of the first feed and the partially reacted particles of the second feed to the first reactor.

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First Claim