Vol.28 No.I 何启林等：煤的氧化和热解反应的动力学研究 ·5· combustion.Thermochim Acta,1994,244:177 John Wiley Sons Ltd.,1986:80 [6】刘乃安，王海晖，范维澄，等.林木热解动力学模型研究.中[8】Mol,Krug D,Zepf D.A comparison of different methods 国科学技术大学学报，1998,28(1)：40 for the estimation of kinetic date//Hemminger W.Proceed- [7]Wendlandt WW.Thermal Analysys.3rd ed.New York: ings of the Sixth ICTA.Bayreuth:Germany,1980:57 Kinetics of oxidation and thermal degradation reaction of coal HE Qiling,WANG Deming2) 1)Department of Resources Development and Management Engineering.Anhui University of Science and Technology,Huainan 232001,China 2)School of Mineral and Safety Engineering Resource,China University of Mining and Technology,Xuzhou 221008,China ABSTRACT The thermal analysis was used to study the oxidation and thermal degradation reaction of coal with different oxidation degrees of coal.The results showed that in the air this reaction of coal could be di- vided into five stages,e.g.moisture content vaporizing,weighing by absorbing oxygen,thermal degrada- tion by heating,firing,and firing last.The two stages of coal's oxidation,weighing by absorbing oxygen and degradation by heating,were studied.The oxidation reaction of weighing by absorbing oxygen is a first-order chemical reaction,and the thermal degradation reaction by heating is a 3/2-order chemical reac- tion.The average activation energy E and InA at different stages of oxidation were calculated.The feature of oxidation process and the rule of E and InA at different oxidation processes were analyzed.A reliability of calculated kinetic parameters of the oxidation reaction was checked by the drawing method. KEY WORDS coal;thermal analysis method;oxidative thermal degradation;reaction kineticsV 0 1 。 2 8 N o . 1 何启林 等 : 煤的氧化和热解反应的动力学研究 e o m b u s t i o n . T h e r m o e 址m A c t a , 1 99 4 , 2 44 : 17 7 刘乃 安 , 王海 晖 , 范维 澄 , 等 . 林木热解 动力学模型研 究 . 中 国科学技术大学学报 . 1 9 9 5 , 2 8 ( 1 ) : 4 0 We n d lan d t W W . T h e rm al A n a l y s y s . 3 r d e d . N e w Y o r k : J o hn W il e y & oS n s L t d . , 1 9 8 6 : 8 0 〔8 ) M o ll J , K ur g D , Z efP D . A e曲p ar l咖 of d if f e r ent m e t ho ds of r t he es t i r o a t i on of k谊et i 。 d at e / H e rnm i n g e : w . P ocr e e d - i n g s o f t h e S i x t h I C T A . B , y r e ut h : G e mr a ll y . 1 98 0 : 5 7 , 产 飞J.es 0 7 广.L 产` 奋 ` K i n e t i e s o f o x i d a t i o n a n d t h e r m a l d e g r a d a t i o n r e a e t i o n o f e o a l 邢 Q￡z艺n g l ) , W叭N G eD m ` n g Z ) 1 ) D e p a rt m e n t o f R eso u r e e s eD v e lo p m e n t an d M a n 眼e m e n t E呢i n e e r i n g , A n h u i U n i v e sr i t y o f S e ien e e an d eT e h n o lo 盯 , H u 巨 an 2 32 0 0 1 , C h i n a 2 ) S e l l o o l o f M i n e r al a n d S a f e t y E n g i n e er i n g R e os u r e e , Ch i n a U n i v e r s i t y o f M i n i眼 an d T e e hn o l o 盯 , X uz ho u 2 2 1 0 0 8 , Ch i an A B S T R A C T T h e t h e rm a l a n a l y s i s w a s u s e d t o s t u d y t h e o x id a t i o n a n d t h e rm a l d e g r a d a t i o n r e a e t i o n o f e o a l w i t h d i ff e r e n t o x i d a t i o n d e g r e e s o f e o a l . T h e r e s u l t s s h o w e d t h a t i n t h e a i r t h i s r e a e t i o n o f co a l e o u ld b e d i - v i d e d i n t o f i v e s t a g e s , e . g , mo i s t u r e e o n t e n t v a p o r i z ing , w e i g h i n g b y a b so r b i眼 o x y g e n , t h e r m a l d e g r a d a - t i o n b y h e a t i n g , fi r i n g , a n d fi r i n g l as t . T h e t w o s t a g e s o f e o a l ’ 5 o x i d a t i o n , w e i g h i n g b y a b s o r b i n g o x y g e n a n d d e g r a d a t i o n b y h e a t i n g , w e r e s t u d i e d . T h e o x i d a t i o n r e a e t i o n o f w e i g h i n g b y a b so r b i n g o x y g e n i s a f i r s t 一 o r d e r C h e m i e a l r e a e t i o n , a n d t h e t h e r m a l d e g r a d a t i o n r e a e t i o n b y h e a t i n g 1 5 a 3 / 2 一 o r d e r e h e m i e a l r e a e - t io n . T h e a v e r a g e a e t i v a t i o n e n e r g y E a n d I n A a t d i ff e r e n t s t a g e s o f o x i d a t i o n w e r e e al e u l a t e d . T h e f e a t u r e o f o x i d a t i o n p or e e s s a n d t h e r u l e o f E a n d I n A a t d if f e r e n t o x i d a t i o n p or e e s s e s w e r e a n a ly z e d . A r e li a b ili t y o f e a l e u l a r e d k i n e t i e p a r a m e t e r s o f t h e o x i d a t i o n r e a e t i o n w as e h e e k e d b y t h e d r a w i n g m e t h o d , K E Y WO R D S e o a l ; t h e r m a l a n al y s i s m e t h o d ; o x i d a t i v e t h e r m al d e g r a d a t i o n ; r e a e t i o n k i n e t i e s