摘要
为了研究氢气在煤液化油中的溶解规律和煤液化反应过程中的氢耗,选择煤液化油中几种代表性物质的混合组分十六烷-四氢萘、四氢萘-喹啉、十六烷-喹啉作为溶剂,利用平衡液相取样法气体溶解度测定装置,测定了氢气在上述溶剂中不同温度和压力下的溶解度数据(453.15 K～623.15 K,1 MPa～10 MPa),同时给出了氢气在这些混合溶剂体系中的溶解度规律.利用数学模型lnxH2=-a/T+bT+clnT+dlnPH2+e(式中参数可由氢气在相应溶剂中的溶解度数据关联得到)和P/N/A方法计算相关溶解度数据,发现该数学模型的计算预测值与实验值的平均绝对误差(η)在5.52%左右,而通过P/N/A方法的计算,预测值与实验值的平均绝对误差较大,这表明该数学模型在计算氢气在有机混合溶剂中的溶解度方面具有很好的应用价值.
In order to research the regular pattern of hydrogen dissolved in coal liquefied oil and hydrogen consumption in the coal direct liquification process, data on the high-pressure solubility of hydrogen in hexadecane-1,2,3,4-tetrahydronaphthalene, 1,2,3,4-tetrahydronaph- thalene-quinoline, hexadecane quinoline at temperatures from 453. 15 K to 623. 15 K and pressures from 1 MPa to 10 MPa were determined with an experiment-established apparatus that measured the solubility in vapor-liquid phase equilibrium sampling way. Meanwhile, the regular pattern of hydrogen dissolved was revealed in these mixed solvent system. A mathematical model based on Pierotti method and Henry law is proposed. Calculation of solubility of hydrogen in these mixed solvent system with the mathematical model that the expression of model is a lnxH2=-a/T＋bT＋clnT＋dlnPh2＋e, in which related parameters in model is obtained by regres- sion of known solubility data for different solvents showed that the average absolute deviation（p） between regression values and experimental results is around 5.52%, while the average absolute deviation between calculation of solubility of hydrogen in these mixed solvent system with P/N/A model and experimental results is larger. The study indicated that the mathematical model has best application value in counting solubility of hydrogen in organic solvent mixtures.
出处
《煤炭转化》
CAS
CSCD
北大核心
2011年第2期55-58,68,共5页
Coal Conversion
基金
国家自然科学基金资助项目(20776094
21076137)
山西省自然科学基金资助项目(2009011010-2)
关键词
氢气
溶解度
煤液化油
数学模型
P/N/A方法
hydrogen, solubility, coal liquefied oil, the mathematical model, the P/N/A model
