MICROWAVE PLASMA BIOMASS GASIFYING FIXED BED GASIFIER AND PROCESS

A microwave plasma biomass gasifying fixed bed gasifier comprising a vertically arranged gasifier body (2). The upper part of the gasifier body (2) is a gasifier clearance area (8). The lowest part of the gasifier body (2) is a fixed bed layer. Provided on the gasifier body are a raw material and fuel inlet, a product gas outlet, an oxygen/steam inlet (4 and 5). Provided at the bottom part of the gasifier body is a slug discharging outlet (7). Arranged at the product gas outlet is a synthesis gas monitoring unit (6). Arranged on the gasifier body is at least one section of microwave plasma generator (3). Also provided is a biomass gasification process utilizing the gasifier. The process comprises: 1) a biomass is fed into the gasifier via a feeder apparatus, and gasified on the microwave plasma fixed bed layer; a biomass fixed carbon content is subjected to a combustion reaction in an oxidation area on the bed layer, a high temperature flue gas is generated, the flue gas is transmitted upwards to a feeder area to heat a fuel fed into the gasifier, while at the same time, is subjected to a chemical reaction with high temperature steam injected from the lower layer oxygen/steam nozzle and an activity-rich microwave plasma-activated oxidizer of a first-section microwave plasma generator, where the temperature of a reaction area is controlled between 700°C and 1600°C; 2) a synthesis gas generated from the reaction is transmitted upwards to the clearance area, and is further cracked via a second-section microwave plasma generator; 3) a residual coke substance is transmitted downwards to the fixed bed layer to gradually release heat to maintain bed temperature, a burned biomass slag is discharged outside the gasifier via the slag discharging outlet; and 4) online monitoring is implemented via the synthesis gas monitoring unit arranged at the product gas outlet at the top part of the gasifier. Un gasificador de lecho fijo que gasifica biomasa de plasma de microondas, que comprende un cuerpo de gasificador (2) dispuesto verticalmente. La parte superior del cuerpo (2) de gasificador es un área libre (8) de gasificador. La parte inferior del cuerpo (2) de gasificador es una capa de lecho fijo. Provistas en el cuerpo del gasificador hay una entrada de materia prima y combustible, una salida de gas producto, una entrada de oxígeno/vapor (4 y 5). Provista en la parte inferior del cuerpo del gasificador hay una salida (7) de descarga de escoria. Dispuesta en la salida d