加压条件下煤热解反应动力学的试验研究  

Experimental Research of Pressurized Coal Pyrolysis' Reaction Kinetics

作　　者：熊源泉[1] 刘前鑫[1] 章名耀[1] 

机构地区：[1]东南大学

出　　处：《动力工程》1999年第3期77-81,共5页Power Engineering

摘　　要：运用热分析仪器研究固体热分解特性和反应动力学是目前较为流行的方法。作者在自制的加压热重分析仪上，在大量的试验数据的基础上，运用Ｓｅｓｔａｋ 和Ｂｅｒｇｇｒｅｎ［１］ 研究得到的通式：ｆ（ａ）＝ ａｎ （１－ ａ）ｍ ［－ ｌｎ（１－ａ）］ｋ ，对实验数据进行多元非线性回归，得出了加压下煤热解动力学反应机理方程，以及平均活化能Ｅ和指前因子Ｋ０ 。并利用Ｆ（ａ）＝∫ａ０ｄａ／ｆ（ａ）求得Ｆ（ａ），通过ｌｏｇ（Ｆ（ａ））与 １Ｔａ图象关系的线性度验证了ｆ（ａ）的正确性。At present, thermal analysis apparatus is used in studying the properties and kinetics of the solid pyrolysis extensively. Basing on a large of experimental figures and applying a formula obtained by Sestak and Berggren [1] : f(α)=α n(1-α) m [-ln (1-α) k, this paper, by means of pressurized thermogravimetric analyzer designed and produced by ourselves, processes the experimental data utilizing the method of nonlinear simulation in several elements, then acquires a reactionary mechanical equation of pressurized coal pyrolysis kinetics, and means the activation energy E or factor ahead of exponential Ko . In the meantime, this paper obtains F(α) from equation F(α) =∫ α 0 d α/f(α) , and checks the correctness for expression of f(α) by means of linearity of diagram relation for log F(α) versus 1 Tα . Figs 5, table 2 and refs 5.

关 键 词：煤 加压 热解 机理方程 反应动力学 试验 

分 类 号：TQ530.2[化学工程—煤化学工程]