Two-way Separation of Water and Gas Pilot Equipment Based on Biomass Continuous Pyrolysis
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摘要:
针对现有生物质热解设备存在的热解气中水分含量高及设备密封性差等问题,结合农业废弃物原料特征,提出了水气双向分离热解工艺方案,在此基础上,对水气双向分离热解反应器、进料和冷却出炭装置进行了专门设计,开发了水气双向分离式生物质连续热解中试设备。设备运行检测结果表明,以玉米秸秆为原料,原料处理能力27.6 kg/h,生物炭得率32.2%,热解气产率0.41 m3/kg,热解气热值15.3 MJ/m3,热解气含水率6.82%,各项技术指标均达到设备设计目标与要求。该中试设备的开发为设备示范应用提供了基础支撑。
Abstract:Aiming at problems of poor raw material adaptability, high moisture content in the syngas and poor equipment sealing of the current biomass pyrolysis equipment, combined with the latest developments in biomass pyrolysis, carbonization technology and characteristics of agricultural waste raw materials, a craft of two-way separation of water and gas system based on continuous pyrolysis was proposed, a two-way separation of water and gas pilot equipment based on continuous pyrolysis was developed, and design of feeding device, pyrolysis reactor and biochar cooling outlet device was focused on.After running test, the system was proved to be stable.Using corn stalks as raw materials, processing capacity was 27.6 kg/h, biochar yield was 32.2%, pyrolysis gas yield was 0.41 m3/kg, pyrolysis gas calorific value was 15.3 MJ/m3, and moisture content of syngas was 6.82%.All technical indicators reached system design goals and requirements.Development of pilot system has laid an important foundation for equipment demonstration applications.
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Keywords:
- pyrolysis /
- biomass /
- two-way separation of water and gas /
- pilot equipment
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表 1 设备主要技术参数
Table 1. Main technical parameters of equipment
指标 参数值 外形尺寸/(mm×mm×mm) 5 760×1 300×1 900 配套总动力/kW 6.55 回转反应器尺寸/mm×mm Ф900×L4 000 加热能源 热解气 控温方式 双段火控温 原料处理能力/(kg·h−1) 20~30 反应室压力/Pa −10~10(与大气压差) 表 2 设备性能指标
Table 2. Performance index of equipment
性能指标 指标值 原料处理量/(kg·h−1) 27.6±1.1 生物炭得率/% 32.2±1.8 燃气产率/(m3·kg−1) 0.41±0.3 燃气热值/(MJ·m−3) 15.3±2.7 热解气含水率/% 6.82 -
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