煤与生物质微波共热解特性实验研究

EXPERIMENTAL STUDY ON MICROWAVE CO-PYROLYSIS OF BIOMASS AND LIGNITE

通过自制的微波热解实验台架,采用微波加热方式,考察微波吸收剂加入比例、微波输出功率及热解时间等实验条件对花生売与神华5#褐煤微波共热解特性的影响.采用SEM和FTIR分析微波热解前后样品的表面形貌及化学结构,利用GC-MS对液体产物进行分析.结果表明,微波加热条件下,增加微波吸收剂加入比例和微波输出功率,共热解程度加深,液体焦油与热解气产率大幅增加,而固体半焦产率则随之下降.

In this study,systematic experiments on microwave co-pyrolysis of biomass and Shenhua lignite using a modified domestic microwave oven were carried out.The effects of ratio of microwave absorbant to biomass and coal,microwave output power and pyrolysis time were investigated.Pyrolysis products at different conditions were analyzed using GC-MS,SEM and FTIR before and after pyrolysis.The results showed that lignite and biomass conversion during co-pyrolysis increased with increasing the ratio of microwave absorbant to biomass and coal,microwave power and pyrolysis time.The microwave co-pyrolysis is an effective way of thermochemical conversion of biomass and lignite.