中文

Journal of Applied Sciences ›› 1990, Vol. 8 ›› Issue (3): 278-282.

• Research Notes • Previous Articles    

NEW CORRELATION FOR ESTIMATION OF CRITICAL COMPRESSIBILITY FACTOR OF NON-HYDROCARBONS

WANG NAIXU, CHANG BAOYI   

  1. Shenyang Institute of Chemical Technology
  • Received:1987-03-18 Revised:1987-10-24 Online:1990-09-30 Published:1990-09-30

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Abstract: Substituting the average value of correlations for predicting Tc of non-hydrocarbons and the correlations for predicting Pc and Vc into the critical compressibility factor definition equation, Zc=(PcVc)/(RTc) leads to the following correlation for estimating Zc as
Zc=0.259+40/(R(MN)0.5(1.27660+92.76/(Tb)))
By combining the experimental values of 133 non-hydrocarbons' critical compressibility factors and the method of least square regression, we obtain the correlation for predicting Zc as follows:
Zc=0.2772-0.533/((MN)0.5(1.27660+92.76/(Tb)))