ENTRAINED-FLOW GASIFIER AND GASIFICATION METHOD USING THE SAME FOR SYNTHESIZING SYNGAS FROM BIOMASS FUEL

摘要

A microwave plasma based entrained flow gasifier of biomass, including a furnace body and a fuel pretreatment system. The furnace body includes a fuel inlet disposed at the lower part of the furnace body, a syngas outlet disposed at the top of the furnace body, and a slag outlet disposed at the bottom of the furnace body. The fuel inlet presents in the form of nozzles. The fuel pretreatment system is disposed outside of the furnace body, and includes a fuel crushing apparatus, a sieving apparatus disposed downstream to the fuel crushing apparatus, a first fuel container for receiving particle size-qualified fuel, a second fuel container for receiving particle size-unqualified fuel, and a feeding hopper disposed downstream to the first fuel container. The first fuel container and the second fuel container are disposed side-by-side downstream to the sieving apparatus.

主权项

1. A gasifier, comprising: a furnace body and a fuel pretreatment system, wherein the furnace body is vertically disposed and comprises a fuel inlet disposed at a lower part of the furnace body, a syngas outlet disposed at a top of the furnace body, and a slag outlet disposed at a bottom of the furnace body;
the fuel inlet comprises nozzles; the fuel pretreatment system is disposed outside of the furnace body, and comprises a fuel crushing apparatus, a sieving apparatus disposed downstream to the fuel crushing apparatus, a first fuel container for receiving particle size-qualified fuel, a second fuel container for receiving particle size-unqualified fuel, and a feeding hopper disposed downstream to the first fuel container; the first fuel container and the second fuel container are disposed side-by-side downstream to the sieving apparatus; a bottom of the feeding hopper is connected to the furnace body via the nozzles; a monitoring unit is disposed close to the syngas outlet at the top of the furnace body; the nozzles are disposed radially along the furnace body and are between 2 and 4 in number; and one or two layers of microwave plasma generators are disposed in parallel at a gasification zone of the furnace body, and each layer of the microwave plasma generator comprises between 2 and 4 working gas inlets.