生物化学组分对生物质型煤燃烧特性影响的实验研究  

Experimental Study About the Effect of Biomass Chemical Composition on the Combustion Characteristics of Bio-briquette

作　　者：李方勇[1] 宋景慧[1] 

机构地区：[1]广东电网公司电力科学研究院,广东省广州市510080

出　　处：《中国电机工程学报》2011年第26期124-130,共7页Proceedings of the CSEE

摘　　要：生物质型煤燃烧能够降低污染物排放,改善劣质煤燃烧性能。通过对生物质进行化学萃取实验,从分析生物质化学组分出发,对不同配比的生物质型煤进行了燃烧失重实验,研究了生物质型煤的燃烧特性。结果表明:生物质的加入改善了生物质型煤的燃烧性能,其中影响生物质型煤燃烧特性关键因素是生物质型煤中纤维素的含量,在仅考虑着火温度、挥发份最大释放速率及燃尽温度来评价燃烧特性时,纤维素含量越高,生物质型煤的燃烧性能越好。最后,提出了生物质型煤燃烧性能评估因子来定量评价纤维素含量对生物质型煤燃烧性能的影响。Bio-briquette combustion technology, as one of the most effective ways for biomass utilization, has attracted more and more scholar＇s attention in recent years due to its potential benefits for both environment and energy conservation. In this paper, the combustion characteristic of bio-briquette was analyzed on the basis of biomass chemical composition, which was analyzed by a chemical extraction process. And then the bio-bfiquettes with different biomass compositions were burned in a thermal analytical balance furnace. The experimental results show that increasing the quantity of biomass will improve the combustion performance of bio-briquettes, where the main factor is the cellulose composition in biomass. If considering such three aspects as the ignition temperature, the biggest release rate of volatile matter and the bum-up temperature, to evaluate the combustion characteristics, it was found that the more cellulose contains, the better the combustion performance of bio-briquette is. Finally, the concept of combustion characteristics evaluating factor for biomass briquette was introduced to quantitatively evaluate the combustion performance of biomass briquette.

关 键 词：生物质型煤 化学组分 纤维素 燃烧特性 性能评估因子 

分 类 号：TK228[动力工程及工程热物理—动力机械及工程]