CAJ | 학술논문

在生物质喂入率为0.8～2.0 kg*h-1的流化床上以木屑为原料进行了快速热裂解试验,系统研究了木屑热裂解过程中的流化床反应器温度、生物质粒径和气相滞留期三个主要参数对热裂解产物产率的影响.结果表明,当反应器温度在450～600℃之间变化时,在500℃条件下,生物油产率最高,其值为53.33%,而木炭及不可冷凝气体产率分别为8.97%和37.70%.当温度为500℃,木屑粒径在0.90 mm以下时,粒径在0.45～0.60 mm范围内的生物油产率最大,达到58.23%,这时木炭产率为8.23%.对粒径小于0.20 mm的木屑在温度500℃,气相滞留期0.80, 1.20, 1.50 s三个量级上的热裂解表明,气相滞留期为0.80 s时,生物油产率达到最大值为62.60%.但是,当气相滞留期较长时(1.50 s),生物油产率稍有下降.生物油是极性有机物与水的可溶混合物.因此,木屑快速热裂解生产液体燃料具有较大的潜力.
재생물질위입솔위0.8～2.0 kg*h-1적류화상상이목설위원료진행료쾌속열렬해시험,계통연구료목설열렬해과정중적류화상반응기온도、생물질립경화기상체류기삼개주요삼수대열렬해산물산솔적영향.결과표명,당반응기온도재450～600℃지간변화시,재500℃조건하,생물유산솔최고,기치위53.33%,이목탄급불가냉응기체산솔분별위8.97%화37.70%.당온도위500℃,목설립경재0.90 mm이하시,립경재0.45～0.60 mm범위내적생물유산솔최대,체도58.23%,저시목탄산솔위8.23%.대립경소우0.20 mm적목설재온도500℃,기상체류기0.80, 1.20, 1.50 s삼개량급상적열렬해표명,기상체류기위0.80 s시,생물유산솔체도최대치위62.60%.단시,당기상체류기교장시(1.50 s),생물유산솔초유하강.생물유시겁성유궤물여수적가용혼합물.인차,목설쾌속열렬해생산액체연료구유교대적잠력.
Sawdust fast pyrolysis experiments were conducted in a fluidized bed reactor at a biomass feed rate of 0.80～2.00 kg*h-1. The effects of process conditions, like fluidized bed reactor temperature, feed size and vapor residence time on the product yields were studied. When reactor temperatures were varied from 450℃ to 600℃, a maximum bio-oil yield of 53.33%wt was achieved at 500℃ with a char and gaseous yields of 8.97 %wt and 37.70%wt respectively. The particle size of sawdust varied in the range of 0～0.90 mm. The yield of bio-oil was maximum (58.23%wt of biomass feed) for the particle size of 0.45～0.60 mm with a char yield of 8.23%wt. Vapor residence times were ranged from 0.80 to 1.50 s at temperature of 500℃ with a particle size less than 0.20 mm. A maximum bio-oil yield of 62.60%wt was achieved at 500℃ when the vapor residence time was held constant at 0.80 s. However, at the longer residence time(1.50 s), bio-oil yield was slightly lower. Bio-oil is a miscible mixture of polar organics with water. The results showed the potential of sawdust fast pyrolysis for liquid hydrocarbon fuels production.