甲烷水合物分解热计算新方法  

A New Method for Calculating the Dissociation Heat of Methane Hydrate

作　　者：陈花[1] 关富佳[1,2] 肖启圣 程亮[1] CHEN Hua;GUAN Fu-jia;XIAO Qi-sheng;CHENG Liang(College of Petroleum Engineering,Yangtze University, Hubei Wuhan 430100, China;Hubei Cooperative Innovation Center of Unconventional Oil and Gas, Yangtze University, Hubei Wuhan 430100, China)

机构地区：[1]长江大学石油工程学院,湖北武汉430100 [2]长江大学非常规油气湖北省协同创新中心,湖北武汉430100

出　　处：《当代化工》2019年第8期1783-1786,1790,共5页Contemporary Chemical Industry

基　　金：湖北省高等学校大学生创新创业训练项目“间壁换热开采天然气水合物实验研究”(2018323)

摘　　要：针对气体压缩因子计算精度制约了甲烷水合物分解热计算准确程度,从提高压缩因子计算精度和简单可行性出发,通过对复杂气体状态方程编程计算求取气体压缩因子,经与美国标准局数据对比发现Setzmann方程计算精度最高,应用于Clausius-Clapeyron方程计算水合物分解热,更接近于传统实验的量热法测试结果。同时,为了明确加入SDS对甲烷水合物分解热的影响,进行了室内合成实验,利用改进后的Clausius-Clapeyron方程计算了纯水条件下和含0.3%SDS甲烷水合物的分解热,结果表明,在285K下,含0.3%SDS条件下与纯水条件下合成的甲烷水合物分解热误差约为1.92%。The accuracy of calculating the decomposition heat of methane hydrate is restricted by the accuracy of calculating the gas compression factor. In order to improve the calculation accuracy and simplicity of the compression factor, the gas compression factor was calculated by programming the complex gas state equation. Through comparing with the data of American Bureau of Standards, it was found that the Setzmann equation has the highest calculation accuracy. It was applied to Clausius-Clapeyron equation to calculate the dissociation heat of hydrate, which was closer to the calorimetry test results of traditional experiments. At the same time, in order to clarify the effect of SDS addition on the decomposition heat of methane hydrate, laboratory synthesis experiments were carried out. The decomposition heat of methane hydrate in pure water and 0.3% SDS was calculated by using the improved Clausius-Clapeyron equation. At 285 K, the error of methane hydrate decomposition heat under 0.3% SDS and pure water conditions was about 1.92%.

关 键 词：Clausius-Clapeyron方程 压缩因子 水合物 分解热 

分 类 号：TQ013[化学工程]