洁净煤技术
潔淨煤技術
길정매기술
Clean Coal Technology
2015年
5期
76-79
,共4页
小粒径%低阶煤%热解特性%热解温度
小粒徑%低階煤%熱解特性%熱解溫度
소립경%저계매%열해특성%열해온도
small particle size%low rank coal%pyrolysis characteristic%pyrolysis temperature
为优化小粒径低阶煤热解工艺参数,以典型小粒径长焰煤为研究对象,结合热重分析,利用1 kg外热式固定床热解装置,考察了热解温度对热解产品产率及质量的影响. 结果表明:500~750 ℃时,随着热解温度升高,半焦产率降低,煤气产率升高,煤气中H2 含量不断增加,最高为44. 64%,CH4含量不断降低,为28. 83% ~38. 55%;焦油产率先升后降,在700 ℃时达到最高. 物料热解过程中发生粉化,炉壁温度高于650 ℃以后,物料粉化现象加剧,粉末比例迅速增加,因此最终确定小粒径神木煤适宜热解温度为600~700 ℃.
為優化小粒徑低階煤熱解工藝參數,以典型小粒徑長燄煤為研究對象,結閤熱重分析,利用1 kg外熱式固定床熱解裝置,攷察瞭熱解溫度對熱解產品產率及質量的影響. 結果錶明:500~750 ℃時,隨著熱解溫度升高,半焦產率降低,煤氣產率升高,煤氣中H2 含量不斷增加,最高為44. 64%,CH4含量不斷降低,為28. 83% ~38. 55%;焦油產率先升後降,在700 ℃時達到最高. 物料熱解過程中髮生粉化,爐壁溫度高于650 ℃以後,物料粉化現象加劇,粉末比例迅速增加,因此最終確定小粒徑神木煤適宜熱解溫度為600~700 ℃.
위우화소립경저계매열해공예삼수,이전형소립경장염매위연구대상,결합열중분석,이용1 kg외열식고정상열해장치,고찰료열해온도대열해산품산솔급질량적영향. 결과표명:500~750 ℃시,수착열해온도승고,반초산솔강저,매기산솔승고,매기중H2 함량불단증가,최고위44. 64%,CH4함량불단강저,위28. 83% ~38. 55%;초유산솔선승후강,재700 ℃시체도최고. 물료열해과정중발생분화,로벽온도고우650 ℃이후,물료분화현상가극,분말비례신속증가,인차최종학정소립경신목매괄의열해온도위600~700 ℃.
Based on the thermogravimetry analysis of typical small particle size long flame coal,effect of pyrolysis temperature on product yield and quality were researched using 1kg external-heated equipment. The results showed that semicoke yield decreased and coal gas yield increased as the final pyrolysis temperature rised from 500℃ to 750℃. The proportion of H2 continuously increased with the highest of 44. 64%,the change of CH4 was opposite with the value of 28. 83% to 38. 55%. The coal tar yield rose first,then fell,it reached the maximum at 700 ℃. Particle pulverization happened during pyrolosis,and reinforced obviously when the temperature was higher than 650℃. The suitable pyrolysis temperature ranged from 600 ℃ to 700 ℃ for small size Shenmu coal.
