SOLID WASTE GASIFICATION SYSTEM WITH ANODE GAS RECYCLING ARRANGEMENT

摘要

A system and method of producing electrical power from a solid waste stream is provided. The system includes a low tar gasification generator that receives a feedstock stream, such as a solid waste stream. The feedstock stream is gasified to produce a first gas stream that includes hydrogen, at least one contaminant and at least one diluent. At least one clean-up process is performed on the first gas stream to remove the at least one contaminant and generate a second gas stream. Electrical power is generated by a solid oxide fuel cell in response to receiving the second gas stream. The solid oxide fuel cell outputting an anode exhaust gas stream. A portion of the anode exhaust gas is vented to reduce the level of diluent in the second gas stream.

主权项

1. A system for generating electrical power from solid waste material, the system comprising:
a feedstock module configured to receive at least one feedstock stream; an input module having a low tar gasification generator configured to produce a first gas stream in response to receiving the at least one feedstock stream, the first gas stream including hydrogen, at least one contaminant and at least one diluent compound; a process module fluidly coupled to receive the first gas stream, the process module including at least one clean-up process module configured to remove the at least one contaminant from the first gas stream and produce a second gas stream containing hydrogen and at least a portion of the at least one diluent compound; a solid oxide fuel cell (SOFC) coupled to receive the second gas stream and generate electrical power, the SOFC having an anode exhaust gas stream, wherein the SOFC is fluidly coupled to flow the anode exhaust gas stream to the process module and inject the anode exhaust gas stream into one of the first gas stream or the second gas stream; a vent fluidly coupled to selectively flow a portion of the anode exhaust gas stream to the environment; and a control system coupled for communication to the vent, the control system having a processor responsive to executable computer instructions for flowing the portion of the anode exhaust gas stream to the environment to reducing a level of the at least one diluent compound in the second gas stream.