CAJ | 학술논문

基于单一流化床两步气化法，以煤作为热载体和发热体，水蒸气为气化剂，CaO为催化剂，在自行研制的流化床热态装置上对生物质（锯木）气化制备燃气进行了研究。探讨了温度和水蒸气与锯木比对燃气组分和低位热值的影响。在所研究的操作参数范围内，（H2+ CO）含量为67.58%~74.9%，燃气低位热值为10719.09 kJ/Nm3~12002.44 kJ/Nm3。实验结果表明，含少量N2的中热值燃气可以被获得，H2和CO是燃气中最主要的两种气体。随着温度的升高，燃气中H2和CO含量增加，而CH4和CO2含量及燃气低位热值则呈现下降趋势。随着水蒸气与锯木比的增加，燃气中H2和CO2含量增加，而CH4和CO含量则相应的减小。
기우단일류화상량보기화법，이매작위열재체화발열체，수증기위기화제，CaO위최화제，재자행연제적류화상열태장치상대생물질（거목）기화제비연기진행료연구。탐토료온도화수증기여거목비대연기조분화저위열치적영향。재소연구적조작삼수범위내，（H2+ CO）함량위67.58%~74.9%，연기저위열치위10719.09 kJ/Nm3~12002.44 kJ/Nm3。실험결과표명，함소량N2적중열치연기가이피획득，H2화CO시연기중최주요적량충기체。수착온도적승고，연기중H2화CO함량증가，이CH4화CO2함량급연기저위열치칙정현하강추세。수착수증기여거목비적증가，연기중H2화CO2함량증가，이CH4화CO함량칙상응적감소。
In this study, thermochemical biomass gasification was performed on a self-design fluidized-bed reactor with pure steam as gasification media. A two-stage gasification process in the same fluidized bed reactor was adopted. The goal was to investigate the effects of temperature, steam to sawdust ratios on components and lower heating value of the product gas. Over the ranges of the experimental conditions used, H2 and CO contents in the product gas varies from 67.58%to 74.9%, and gas lower heating value between 10719.09 kJ/Nm3 and 12002.44 kJ/Nm3. The results showed that the top two in the product gas was H2 and CO. With an increase of temperature, H2 and CO contents increased, whilst CH4 and CO2 contents and gas lower heating value decreased. The contents of H2 and CO2 increase with the rise of steam to sawdust, whilst CH4 and CO content showed a decreasing trend.