【Learn Ethylene Together】Five questions per day to easily learn about ethylene 22

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【Learning Ethylene Together】Five questions per day to easily learn about ethylene 22 6. The important factors affecting the ethylene yield in the demethanization tower are operating temperature and pressure. ( ) a. Methane/hydrogen ratio b. Top refrigerant c. Sensitivity plate temperature d. Methane content in the feed 7. The relative volatility is a function of and concentration. ( ) a. Density b. Temperature, pressure c. Equilibrium constant d. Volatility of the corresponding components. 8. The performance curve of a centrifugal compressor is a hump-shaped curve with a peak at a gas flow rate that is not zero; in other words, it is a curve with sections of positive and negative slopes, and the unit operates stably within that range. ( ) a. Negative slope region b. Positive slope region 9. The gas-liquid equilibrium constant for an ideal gas and a liquid that form an ideal solution is a function of . （） a、Temperature b、Pressure c、Temperature and pressure d、Temperature, pressure, and composition. 10、For petroleum fractions with high boiling points, the representation can be used to describe the structure of these molecules more accurately. ( ) a. Hydrocarbon composition b. Group composition c. Average molecular structure d. Structural group composition. 6. The important factors affecting the ethylene yield in the demethanization tower are operating temperature and pressure. ( ) a. Methane/hydrogen ratio b. Top refrigerant c. Sensitivity plate temperature d. Methane content in the feed 7. Relative volatility is a function of and concentration. (b) a. Density; b. Temperature, pressure; c. Equilibrium constant; d. Volatility of the corresponding components. 8. The performance curve of a centrifugal compressor is a hump-shaped curve with a peak at a gas flow rate that is not zero; in other words, it is a curve with sections of positive and negative slope, and the unit operates stably within that range. (a) a. Negative slope region; b. Positive slope region. 9. The gas-liquid equilibrium constant for an ideal gas and a liquid that form an ideal solution is a function of . (c) a. Temperature b. Pressure c. Temperature and pressure d. Temperature, pressure, and composition. 10. For high-boiling-point petroleum fractions, the representation can be used to describe the structure of these molecules more accurately. (d) a. Hydrocarbon composition b. Group composition c. Average molecular structure d. Structural group composition