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首页> 外文期刊>International Journal of Technology >Optimization of Fixed Bed Downdraft Reactor for Rice Husk Biomass Gasification using Secondary Air Intake Variation
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Optimization of Fixed Bed Downdraft Reactor for Rice Husk Biomass Gasification using Secondary Air Intake Variation

机译：利用二次进气变化优化稻壳生物质气化的固定床下浮反应器

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Rice husk is one of the most abundant agricultural wastes in Indonesia, with an annual potency of 13,662 MWe. Using biomass gasification, it can be converted into producer gas, whose energy can be used for thermal and electrical power generation. In gasification terms, gas quality can be interpreted by tar content and gas energy. An experiment using an open top fixed bed downdraft gasifier (batch system) with double stage air supply was conducted by varying the secondary air injection position (Z) and the air ratio (AR). Tar content can be represented by flaming pyrolysis duration and gas quality by the combustion energy of the gas. Flaming pyrolysis is a phenomenon which occurs inside the reactor, where tar produced is re-cracked and dissolved into smaller compounds. This can be achieved if the pyrolysis zone temperature ranges between 500 and 800oC. With an AR of 80%, at Z = 38 cm, flaming pyrolysis with the longest duration of 400 seconds was created, which indicated that this condition had the lowest tar content; meanwhile, at Z = 50 cm, gas with the highest energy (734.64 kJ) was obtained.
机译：稻壳是印度尼西亚最丰富的农业废料之一，年效力为13,662 MWe。使用生物质气化，可将其转化为生产气，其能量可用于热力发电和发电。用气化术语，可以用焦油含量和气体能量来解释气体质量。通过改变二次空气注入位置（Z）和空气比（AR），进行了使用带有双级空气供应的开放式固定床向下气流气化炉（分批系统）的实验。焦油含量可以通过燃烧的热解持续时间和气体的燃烧能量来表示。火焰热解是一种在反应器内部发生的现象，其中产生的焦油被重新裂解并溶解为较小的化合物。如果热解区温度在500到800oC之间，则可以实现此目的。当Z = 38 cm时，AR为80％时，会产生最长持续时间为400秒的明火热解，这表明该条件具有最低的焦油含量。同时，在Z = 50 cm处，获得了具有最高能量（734.64 kJ）的气体。

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