棉花秸秆成型颗粒炭化特性实验研究  

EXPERIMENTAL STUDY ON THE CHARACTERISTICS OF COTTON STRAW BRIQUETTE GRANULE CARBONIZATION

作　　者：马培勇[1] 虞浸 蒋峰 张兵[1] 邢献军[1] 

机构地区：[1]合肥工业大学机械与汽车工程学院,合肥230009 [2]中国石油工程建设公司,北京100120

出　　处：《太阳能学报》2016年第3期546-552,共7页Acta Energiae Solaris Sinica

基　　金：国家科技支撑计划(2012BAD30B01)

摘　　要：选取棉花秸秆成型颗粒为炭化原料,在自制的固定床炭化实验平台上,采用正交实验方法研究升温速率、炭化终温、保温时间和载气流量对其热解炭化性能的影响。用多指标综合平衡法对热解炭进行综合分析评价,结果表明:炭化终温是主要的影响因素。随着炭化终温的升高,成型炭的挥发分含量逐渐减少、灰分含量先略有降低后持续增加、固定碳含量与发热量先增大后减小、成型炭产率逐渐减小。实验参数范围内炭化的最优工艺方案为:升温速率4℃/min、炭化最终温度600℃、保温时间75 min、载气流量50 mL/min。Cotton straw briquette particles were selected as carbonized materials. The effects of heating rate, carbonization temperature, holding time and carrier gas flow rate on the pyrolysis carbonization properties were studied by means of orthogonal experiment method on the self-made fixed bed carbonization experiment platform. The multi-index comprehensive balance method was used for comprehensive analysis and evaluation. The results shows that the final temperature of carbonization is the main factor. Volatile content gradually reduced, ash content first rise slightly and then increase with the increase of the final temperature of carbonization, fixed carbon content and calorific value first rise and then drop, and briquette char yield decreases gradually. And the optimal process plan of cotton stalks carbonized is ： a heating rate of 4℃/min, charring a final temperature of 600 ℃, holding time of 75 min, and the carrier gas flow rate of 50 mL/min.

关 键 词：热解炭化 正交实验 炭化终温 综合平衡法 

分 类 号：TK6[动力工程及工程热物理—生物能]