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    • 108. 发明公开
    • MICROWAVE PLASMA BIOMASS GASIFYING FIXED BED GASIFIER AND PROCESS
    • FESTBETTVERGASERFÜRMIKROWELLENPLASMABIOMASSEVERGASUNG UND VERFAHREN
    • EP2799521A1
    • 2014-11-05
    • EP12863868.1
    • 2012-10-26
    • Wuhan Kaidi Engineering Technology Research Institute Co., Ltd.
    • CHEN, YilongZHANG, YanfengXIA, MingguiZHANG, Liang
    • C10J3/02C10J3/18C10J3/20
    • C10J3/72C10J3/06C10J3/18C10J3/723C10J2300/0916C10J2300/0959C10J2300/0976C10J2300/1238C10J2300/1246Y02P20/129Y02P20/145
    • 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.
    • 一种微波等离子体生物质气化固定床气化炉,包括垂直布置的气化器主体(2)。 气化器主体(2)的上部是气化器间隙区域(8)。 气化器主体(2)的最低部分是固定床层。 在气化器主体上设有原料和燃料入口,产品气体出口,氧/蒸汽入口(4和5)。 在气化器本体的底部设置有塞子排出口(7)。 在产品气体出口处排列的是合成气监测单元(6)。 在气化器体上排列的是至少一段微波等离子体发生器(3)。 还提供了利用气化器的生物质气化过程。 该方法包括:1)生物质通过送料装置送入气化炉,并在微波等离子固定床层上气化; 生物质固定碳含量在床层的氧化区域进行燃烧反应,产生高温烟道气,烟道气向上传送到给料区域,以加热进入气化器的燃料,同时在 同时,从下层氧/蒸汽喷嘴注入的高温蒸汽和第一段微波等离子体发生器的活性丰富的微波等离子体激活氧化剂进行化学反应,其中控制反应区域的温度 在700°C和1600°C之间; 2)从反应产生的合成气向上传送到间隙区域,并通过第二段微波等离子体发生器进一步裂化; 3)残留的焦炭物质向下传送到固定床层,以逐渐释放热量以保持床温,燃烧的生物质渣经由排渣口排出到气化器外; 以及4)通过布置在气化器顶部的产品气体出口处的合成气监测单元实现在线监测。