欧洲生物质半焦与煤混合燃烧特性分析

Analysis of co-combustion characteristics of European biomass char and coal

利用热重分析,采用非等温燃烧方法分别对3种欧洲生物质半焦（绿植废弃物green waste（GW）、厨余废弃物organic fraction（OF）和橘子皮废弃物orange peel（OP））与凌源无烟煤（LY）混合试样的燃烧特性参数进行试验研究,分析不同半焦配比下混合样品的着火温度、最大燃烧速率温度和最大燃烧速率等燃烧特征参数。结果表明,3种生物质半焦的燃烧性能均优于无烟煤,综合燃烧特征指数S值大小顺序为GW〉OF〉OP〉LY;当GW、OF和OP半焦配比分别从5%逐渐增加到20%时,不同混煤的综合燃烧特征指数S值分别从8.196×10^（-15）、8.008×10^（-15）和7.841×10^（-15） mg^2/（min^2·K^3）增加到12.285×10^（-15）、13.094×10^（-15）和8.970×10^（-15） mg^2/（min^2·K^3）,表明生物质半焦的加入能够改善混煤燃烧性,且随着其配比的进一步增加,混煤燃烧性不断增强。

Based on the thermogravimetric analysis,the combustion characteristics of the blend of three kinds of European biomass char（green waste（GW）,organic fraction（OF）and orange peel（OP））and an anthracite from Lingyuan（LY）are studied by the non-isothermal combustion method,respectively.The combustion characteristic parameters of blends such as ignition temperature,maximum combustion rate temperature and the burning rate are analyzed under the condition of different proportion of char.The results show that the combustion performance of the three kinds of biomass char is better than that of the anthracite,and the order of Svalue of comprehensive combustion characteristic index is GWOFOPLY.When the ratio of GW,OF and OP is increased from 5%to 20%,the S value of different blends increases from 8.196×10^（-15）,8.008×10^（-15） and 7.841×10^（-15） mg^2/（min^2·K^3）respectively to 12.285×10^（-15）,13.094×10^（-15） and 8.970×10^（-15） mg^2/（min^2·K^3）,which indicates that the combustion performance of the blends is improved after adding the biomass char in the anthracite,and the combustibility is further enhanced with the increase of the ratio of the biomass char.