S、H2S及CS2在氧气中燃烧反应机理

利用公式△H=-0.1196n/λ计算了S、H2S及CS2在氧气中燃烧反应的火焰温度,并推测了三种物质燃烧反应的机理.S在氧气中燃烧反应的火焰温度计算值为2086 K,与测定值2093K接近,误差为-0.30％.H2S在氧气中燃烧反应的火焰温度计算值为2238K,测定温度2383K,误差为-6.1％.CS2在氧气中燃烧反应的火焰温度计算值为2502K,测定温度2468K,误差为0.14％.根据燃烧反应的火焰温度,推测S、H2S及CS2在氧气中燃烧反应机理.S燃烧反应机理为：（1）O2＋ hv→2O·,（2）S ＋O·→SO＋hv,（3）2SO＋O2→2SO2,（4）SO2＋O·→SO3 ＋hv.H2S燃烧反应机理为：（1）O2＋ hv→2O·,（2） H2S→H2 ＋S,（3）H2 ＋O·→H2O＋hv,（4）S＋O·→SO＋hv,（5） 2SO＋ O2→2SO2,（6）SO2 ＋O·→SO3＋ hv.CS2燃烧反应机理为：（1）O2＋hv→2O·,（2） CS2→C ＋2S,（3）C＋O·→CO＋ hv,（4）CO＋O·→CO＋hv,（5）S＋O·→SO＋ hv,（6）2SO＋ O2→2SO2,（7）SO2＋O·→SO3＋ hv.

The Mechanisms of S,H2S and CS2 Combustion Reactions in Oxygen

The flame temperatures produced by S ,H2S and CS2 burning in oxygen were calculated by the formula AH = -0. l196n/A, and the mechanisms of S,H2S and CS2 combustion reactions were deduced. The Calculated flame temperature of S burning in oxygen was 2086K, its measured temperature was 2093K, the er- ror was -0.30%. The calculated flame temperature of H2S burning in oxygen was 2238K, its determined temperature was 2383K,the error was -6.1%. The calculated flame temperature of CS2 burning in oxygen was 2502K, its determined temperature was 2468K, the error was 0.14%. According to the flame tempera- tures, the mechanisms of S, H2S and CS2 combustion reactions in oxygen were deduced. The mechanism of S combustion reaction was： （ 1 ） 02 ＋ hv→2O·, （2） S ＋ O· →SO ＋ hv, （ 3 ）2SO ＋ O2-→2SO2, （4） SO2 ＋O· SOz ＋ hv. The mechanism of H2S combustion reaction was： （ 1 ） 02 ＋ hv-→2O· , （2） H2S-→H2 ＋ S, （ 3 ） H2 ＋ 0→H20 ＋ hv, （ 4 ） S ＋ O·→SO ＋ hv, （ 5 ） 2SO ＋ O2→2S02, （ 6 ） SO2 ＋ O →SO3 ＋ hv. The mechanism of CS2 combustion reaction was ： （ 1 ） 02 ＋ hv-→2O· , （2） CS2-C ＋ 2S, （ 3 ） C ＋ O · →CO ＋ hv, （4） CO ＋ O ·→ CO ＋ hv, （5） S ＋ O· →SO ＋ hv, （6） 2SO ＋ O2-→2SO2, （7） SO2 ＋ O· →SO3 ＋ hv.