本文選題：熱提質 + 自燃特性　； 參考：《煤炭工程》2016年10期

【摘要】：基于雨雪天氣后低階煤焦自燃高發(fā)的現(xiàn)象,采用固定床管式爐在105~800℃范圍內對褐煤提質,提質新鮮樣(SA)及其水分復吸樣(SC)分別在程序升溫裝置中進行自燃測定,分析自燃特性變化。結果顯示,水分復吸使SC的臨界溫度吸氧量比SA降低60%以上。與SA不同,SC的吸氧量在低溫氧化階段很小且存在波動,在加速氧化階段產生短暫"平臺"期。SC在加速氧化階段的瞬時升溫速率(θ)比SA增加更快,自熱溫升加速。FCC指標顯示,200~400℃提質的SC,自燃傾向性比SA顯著增加,與SA-105接近,即高濕度環(huán)境儲存會抵消提質降低褐煤自燃傾向性的效果。
[Abstract]:Based on the phenomenon of high spontaneous combustion of low rank char after rain and snow weather, a fixed bed tube furnace was used to measure the quality of lignite, fresh sample SAand its moisture reabsorption sample SC) in a temperature-programmed heating device. The change of spontaneous combustion characteristics is analyzed. The results showed that the oxygen uptake of SC at critical temperature was reduced by more than 60% compared with SA. Different from SA, the oxygen uptake of SC is very small and fluctuating at low temperature, and the instantaneous heating rate (胃) of SC in accelerated oxidation stage is faster than that in SA stage, and the transient "platform" phase (胃) of SC in accelerated oxidation stage is increased faster than that of SA. The self-heating temperature-rising accelerated .FCC index showed that the spontaneous combustion tendency of SCS at 400 鈩，

本文編號：1971693