摘要
水合物密度是水合物研究中最常用的参数之一,迄今却没有完整的理论计算方法,通常的文献和报道中,只给出了若干种简单气体水合物密度的经验或实验值。笔者基于W.G.Knox和G.E.Hess等人提出的计算水合物密度的经验公式,选用适当的模型和方法求取相关参数,提出了一套完整的既可以计算纯组分水合物密度,又可以计算混合气水合物密度的方法。计算结果显示,纯组分水合物计算值和文献值的最大相对误差为2.12%,最小相对误差为0.09%;CH4和C2H6混合气水合物计算值与文献值相对误差不超过5%。
The density is one of the most commonly used parameters in hydrate research, but there hasn't yet been an complete theoretical calculation method up to now. Usually, only the empirical and experimental values of several simple gas hydrate densities were given out in the literatures and reports. On the basis of the empirical formulas of calculating hydrate density proposed by Knox W. G. and Hess G. E, a set of complete methods, by which not only single component but also multiple component hydrate densities may be calculated, are put forward in the paper through acquiring the related parameters by relevant models and methods. The calculating results indicated that, as compared with the values obtained from the literatures, the maximum relative error of the calculation values of the single component hydrate densities was 2.12% and the minimum one 0. 09%; and the relative error of the calculation values of the mixed gas (CH4 and C2H6) hydrate densites was less than 5%.
出处
《天然气工业》
EI
CAS
CSCD
北大核心
2004年第10期30-31,37,共3页
Natural Gas Industry
