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时间:2019-06-13
《某些低级烃和气体的基本性质》由会员上传分享,免费在线阅读,更多相关内容在教育资源-天天文库。
1、某些低级烃的基本性质[273.15K、101325Pa]表1-1气体甲烷乙烷乙烯丙烷丙烯正丁烷异丁烷正戊烷分子式CH4C2H6C2H4C3H8C3H6C4H10C4H8C5H12分子量M16.043030.070028.154044.097042.081058.124058.124072.1510摩尔容积VM(Nm3/kmol)22.362122.187222.256721.936221.99021.503621.597720.891密度ρ(kg/Nm3)0.71741.35531.26052.01021.91
2、362.70302.69123.4537气体常数R[KJ/(kg.k)]517.1273.7284.3184.5193.8137.2137.8107.3临界参数临界温度Te(K)191.05305.45282.95368.85364.75425.95407.15470.35临界压力Pe(MPa)4.64074.88395.33984.39754.76233.61733.65783.3437临界密度Ρc(kg/N/m3)162210220226232225221232发热值高发热值Hh(MJ/Nm3)39.842
3、70.35163.438101.26693.667133.886133.048169.377低发热值H1(MJ/Nm3)35.90264.39759.47793.24087.667123.649122.853156.733爆炸极限爆炸下限Lh(体积%)5.02.92.72.12.01.51.81.4爆炸上限15.013.034.09.511.78.58.58.3L1(体积%)粘度动力粘度μ×106(Pa.s)10.3958.6009.3167.5027.6496.8356.355运动粘度μ×106(m2/s)1
4、4.506.417.463.813.992.531.85无因次系数C164252225278321377368383在常压和293K条件下,可燃料气体在空气中的体积百分数。某些气体的基本性质[273.15K、101325Pa]表1—2气体一氧化碳氢氮氧二氧化碳硫化氢空气水蒸气分子式COH2N2O2CO2H2SH2O分子量M28.01042.016028.013431.998844.009834.07628.96618.0154摩尔容积VM(Nm3/kmol)22.398422.42722.40322.39232
5、2.260122.180221.629密度ρ(kg/Nm3)1.25060.08991.25041.42911.97711.53631.29310.833气体常数R[KJ/(kg.k)]296.63412.664296.66259.585188.74241.45286.867445.357临界参数临界温度Te(K)133.033.30126.2154.8304.2132.5647.3临界压力Pe(MPa)3.49571.29703.39445.07647.38663.766322.1193临界密度Ρc(kg/N
6、/m3)300.8631.015310.91430.09468.19320.07321.70参照上表,可以计算出天然气、人工燃气的密度小于空气密度(1.293kg/Nm3),而液化石油气密度大于空气密度。
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