In order to explore the potential of barley straw hydrothermal charcoal as a fuel,barley straw in Dazi county,Lhasa city,was selected as the research object,and the representative test groups were set up through pretreatment and hydrothermal charcoaliza-tion of barley straw by applying the one-way experimental method and orthogonal experimental method to carry out industrial and ele-mental analyses of barley straw hydrothermal charcoal and barley straw with a focus on the calorific value analysis.The results showed that the calorific value of barley straw hydrothermal carbon was positively correlated with the hydrothermal temperature and hydrother-mal time,and negatively correlated with the solid-liquid ratio.The optimal conditions for the preparation of straw hydrothermal carbon were hydrothermal temperature of 260℃,hydrothermal time of 8 h,and a solid-liquid ratio of 1∶10.The order of the reaction condi-tions for the calorific value of straw hydrothermal carbon was as follows:hydrothermal temperature>hydrothermal time>solid-liquid ratio.The calorific value of barley straw hydrothermal carbon reached 27.98 MJ·kg-1,which was closed to the calorific value of water coal(17-28 MJ·kg-1),and had the potential to be used as a fuel.In conclusion,the study through the control of hydrothermal condi-tions,to improve the calorific value of barley straw hydrothermal carbon,to improve its potential as a fuel,and at the same time,the barley straw as a fuel for the effective use of agricultural waste,to achieve the"waste into treasure".
关键词
青稞秸秆/水热炭化/热值分析/最佳条件
Key words
barley straw/hydrothermal carbonization/calorific value analysis/optimal conditions
维普
万方数据