求化工专业英语高手翻译（4）

Question

3. Results and discussion
3.1. Pure component vapour pressures
The pure component vapour pressure for 2-ethoxyethanol, Poi , was determined experimentally as a function of the temperature using the same equipment as that was used to obtain the
VLE data. The pertinent results appear in Table 2. The measured vapour pressures were correlated using the Antoine equation:
ln Po
i (kPa) = Ai ?BiT (K) + Ci (1)
whose parameters Ai, Bi and Ci are reported in Table 3 together with some literature values. The deviations, Poi = Poi,lit ?Poi,exptl,
calculated by means of the Antoine equation using the constant values from Table 3 have been graphically represented in Fig. 1. In this figure, it can be observed that the mean errorwas less than 1.2% with respect to the values reported by Chylinski et al. [11] and Daubert and Danner [9] and less than 0.5% with respect to the data reported by Chiavone-Filho et al. [12]. The pure component vapour pressures for dipropyl ether (1) and 1-propyl alcohol (2) were determined experimentally and reported in previous papers [7,13]. However, we measured the vapour pressures of dipropyl ether (1) and 1-propyl alcohol (2) up to about the normal boiling point of the respective pure components, which are lower than the 2-ethoxyethanol (3) boiling point. So, to avoid excessive extrapolations of the Antoine equation for the two more volatile components (dipropyl ether and1-propyl alcohol), we have decided to use in this work other equations to estimate these vapour pressures which are applicable in a larger temperature range. We took them from Daubert and Danner [9] and the temperature dependence of dipropyl ether (1) and 1-propyl alcohol (2) pure component vapour pressures was calculated using the equation:
ln Poi (Pa) = Ai +BiT (K) + Ci ln T (K) + DiT (K)Ei (2)
The constants Ai, Bi, Ci, Di and Ei, are reported in Table 3.

Answer 1

3. 结果与讨论
3.1. 纯组分的蒸汽压
使用和前述测定气液平衡数据相同的设备，将2-乙氧基乙醇纯组分的蒸汽压确定为温度的函数。结果见表2。测得的蒸汽压用安托万方程来计算相关性：
ln Po i (kPa) = Ai ?BiT (K) + Ci (1)
在这里参数Ai、Bi和Ci以及其他文献中报道的数值见表3。结合表3的常量和安托万方程算出的偏差绘于图1。 从该图中可以观察到，和Chylinski等[11] ，Daubert and Danner [9]报道的数值比较，我们的平均误差小于1.2%；而和Chiavone-Filho 等报道的相比较则小于0.5% [12]。二丙醚 (1)和1－丙醇 (2)纯组分的蒸汽压用前述文献的方法确定[7,13]。然而我们测得二丙醚 (1) 和1－丙醇 (2) 的蒸汽压分别达到了各自正常情况下的沸点，这比2-乙氧基乙醇(3)的沸点要低的多。因此，为了避免安托万方程对这两种挥发性更强的成分 (二丙醚和1－丙醇)的过度计算，我们决定在本工作中用其他的适用于更大温度区间的方程来估计它们的蒸汽压。我们采用Daubert 和Danner [9]的方程，用下述方程来计算二丙醚 (1)和1－丙醇 (2) 纯组分蒸汽压的温度依赖性：
ln Poi (Pa) = Ai +BiT (K) + Ci ln T (K) + DiT (K)Ei (2)
常数Ai、Bi、Ci、Di和Ei如表3所示。