论文部分内容阅读
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。
In this paper, orthogonal experiment was used to study the influence of heating rate, carbonization temperature, holding time and carrier gas flow on pyrolysis and carbonization performance of self-made fixed-bed carbonization experiment platform. Comprehensive analysis of pyrolytic carbon by multi-index comprehensive balance method shows that carbonization temperature is the main factor. With the increase of final carbonization temperature, the volatile content of formed carbon gradually decreased, the content of ash increased slightly and then increased, the content of fixed carbon and calorific value first increased and then decreased, and the yield of formed carbon decreased gradually. The optimal carbonization process parameters were as follows: heating rate 4 ℃ / min, carbonization final temperature 600 ℃, holding time 75 min and carrier gas flow 50 mL / min.