Development of Straw Pyrolysis Equipment Based on Biochar Syngas Coupling Reforming
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摘要:
针对当前生物质热解炭化设备存在产物质量较差、能量损耗严重等问题，采用多级布风搅拌和气体回流重整等方法，提出生物质炭气原位耦合重整工艺路线，并对炉体、压实机构和多级布风搅拌出料机构进行设计，研发立式移动床生物质炭化设备。以花生壳为原料开展热解炭化试验，结果表明，原料处理能力1312 kg/h，生物炭得率27.8%，热解气热值6.3 MJ/m3，焦油转化率71.3%，各项性能指标均达到设计要求。
Abstract:In view of poor product quality and serious energy loss of current biomass pyrolysis equipment, methods such as multi-stage air distribution and gas reflux reforming were used to propose a process route for biochar syngas coupling reforming．Furnace body, compaction mechanism and multi-stage air distributing stirring and discharging mechanism were designed, and vertical moving bed biomass pyrolysis equipment was developed．Pyrolysis test was carried out with peanut shells as raw materials．Results showed that raw material processing capacity was 1312 kg/h, biochar yield was 27.8%, calorific value of pyrolysis gas was 6.3 MJ/m3, tar conversion rate was 71.3%, and all performance indicators reached design requirements．
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Keywords:
- biomass /
- straw /
- pyrolysis /
- internal heating /
- biochar syngas coupling /
- reforming
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图 2 秸秆内加热移动床热解设备
1. 进料斗 2. 上料输送带 3. 热解炉 4. 鼓风机 5. 引风机6. 气体采样口 7. 燃烧器 8. 三联冷凝器 9. 炭箱10. 生物炭输送带 11. 出炭螺旋 12. 多联出炭通路
Figure 2. Straw internal heating moving bed pyrolysis equipment
图 3 炉体结构
1. 进料口 2. 热解气上出口 3. 热解气下出口 4. 上空气入口5. 下空气入口 6. 热解气回流口 7. 出炭口 8. 点火口9. 下料位计 10. 上料位计
Figure 3. Structure of furnace body
图 5 多级搅拌出料机构结构
1. 搅拌杆 2. 布风板 3. 出料杆 4. 驱动电机
Figure 5. Structure of multistage mixing discharge mechanism
表 1 立式移动床热解反应器主要技术参数
Table 1. Main technical parameters of vertical moving bed pyrolysis reactor
指标 参数 炉体高度/mm 3 500 炉体直径/mm 1 200 配套动力/kW 21.3 加热方式 内加热 设计原料处理能力/（kg·h−1） 1 300 出炭口数量 4 布风方式 环状多级布风 
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表 2 试验结果
Table 2. Test result
测试指标 测得值 原料处理量/（kg·h−1） 1312 生物炭得率/% 27.8 出炭温度/°C 462 热解气热值/（MJ·m−3） 6.3 焦油转化率/% 71.3
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