aspen物性方法的问题
模拟的环氧乙烷吸收塔，但是其中丁烯对于SR-POLAR的计算似乎并不适用，但是丁烯在这个体系里又是微量的，请问有没有什么方法使这个物性方法不对丁烯计算相对密度，或者修改里面ESHOC的计算？
物性方法选SR-POLAR，但是运行就出现下面的错误：
* WARNING IN PHYSICAL PROPERTY SYSTEM
EQUATION OF STATE MODEL ESHOC CALCULATES REDUCED DENSITY = -1.26
AT TEMPERATURE = 318.150, PRESSURE = 0.26184E+07
REDUCED DENSITY > 0.5; RESULTS MAY HAVE SIGNIFICANT ERROR
* WARNING IN PHYSICAL PROPERTY SYSTEM
EQUATION OF STATE MODEL ESHOC CALCULATES REDUCED DENSITY =-0.433
AT TEMPERATURE = 298.150, PRESSURE = 0.16433E+07
REDUCED DENSITY > 0.5; RESULTS MAY HAVE SIGNIFICANT ERROR
* WARNING IN PHYSICAL PROPERTY SYSTEM
EQUATION OF STATE MODEL ESHOC CALCULATES REDUCED DENSITY =-0.411
AT TEMPERATURE = 318.150, PRESSURE = 0.30732E+07
REDUCED DENSITY > 0.5; RESULTS MAY HAVE SIGNIFICANT ERROR
* WARNING IN PHYSICAL PROPERTY SYSTEM
EQUATION OF STATE MODEL ESHOC CALCULATES REDUCED DENSITY = 0.748
AT TEMPERATURE = 318.150, PRESSURE = 0.21997E+07
REDUCED DENSITY > 0.5; RESULTS MAY HAVE SIGNIFICANT ERROR
* WARNING IN PHYSICAL PROPERTY SYSTEM
EQUATION OF STATE MODEL ESHOC CALCULATES REDUCED DENSITY =-0.217
AT TEMPERATURE = 298.150, PRESSURE = 0.19102E+07
REDUCED DENSITY > 0.5; RESULTS MAY HAVE SIGNIFICANT ERROR
* WARNING IN PHYSICAL PROPERTY SYSTEM
EQUATION OF STATE MODEL ESHOC CALCULATES REDUCED DENSITY = 0.550
AT TEMPERATURE = 298.150, PRESSURE = 0.13189E+07
REDUCED DENSITY > 0.5; RESULTS MAY HAVE SIGNIFICANT ERROR
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