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二乙醇胺水溶液的表面张力研究 被引量:7
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作者 付东 钟智坤 +1 位作者 吕建燚 华雪莹 《华北电力大学学报(自然科学版)》 CAS 北大核心 2010年第6期81-84,89,共5页
二乙醇胺(Diethanolamine,DEA)水溶液的表面张力是二氧化碳醇胺吸收工艺的基础数据。用ZBY-1全自动表面张力仪测定了25~82℃温度范围内,DEA水溶液的表面张力,并用经验公式对实验数据进行了关联,关联结果与实验值吻合良好。应用关联的公... 二乙醇胺(Diethanolamine,DEA)水溶液的表面张力是二氧化碳醇胺吸收工艺的基础数据。用ZBY-1全自动表面张力仪测定了25~82℃温度范围内,DEA水溶液的表面张力,并用经验公式对实验数据进行了关联,关联结果与实验值吻合良好。应用关联的公式,研究了表面熵和表面焓等热力学性质与温度和溶液浓度之间的关系。 展开更多
关键词 二乙醇胺水溶液 二氧化碳 表面张力
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N—甲基二乙醇胺水溶液物化数据的测定 被引量:3
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作者 吴宝存 《石油与天然气化工》 CAS 1983年第3期1-5,共5页
一、前言 1.实验目的 N—甲基二乙醇胺(分子式C_5H_(13)O_2N,分子量119.16)水溶液是新发展起来的天然气脱硫溶液,试验证明,它对选择性吸收硫化氢表现出明显的优越性。为此。
关键词 N-甲基二乙醇胺水溶液 物化数据 测定 密度-比重瓶法 表面张力-双毛细管法 比热-直接加热法 饱和蒸汽压-静态测定法
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A New Method to Solve Film Model for CO_2 Absorption with Aqueous Solution of AT-Methyldiethanolamine 被引量:1
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作者 钟战铁 李伟 +2 位作者 施耀 何锋 周明华 《Chinese Journal of Chemical Engineering》 SCIE EI CAS CSCD 2003年第4期441-445,共5页
The shooting method and the difference method are used for numerical simulation of CO2 absorption with aqueous solution of methyldiethanolamine (MDEA). It is demonstrated that these methods are available for the stead... The shooting method and the difference method are used for numerical simulation of CO2 absorption with aqueous solution of methyldiethanolamine (MDEA). It is demonstrated that these methods are available for the steady-state model, which may be expressed as a set of differential algebraic equations (DAEs) with two-point boundary values. This method makes it possible not only to obtain the concentration profiles for MDEA system, but also to reveal the effect of CO2 interfacial concentration on the enhancement factor. With this numerical simulation, the mass transfer process with multicomponent diffusion and reactions can be better understood. 展开更多
关键词 film model numerical simulation carbon dioxide METHYLDIETHANOLAMINE
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CO_2 solubility in aqueous solutions of N-methyldiethanolamine+piperazine by electrolyte NRTL model 被引量:1
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作者 Jicai Huang Maoqiong Gong +2 位作者 Xueqiang Dong Xiaodong Li Jianfeng Wu 《Science China Chemistry》 SCIE EI CAS CSCD 2016年第3期360-369,共10页
Accurate modeling of the solubility behavior of CO_2 in the aqueous alkanolamine solutions is important to design and optimization of equipment and process. In this work, the thermodynamics of CO_2 in aqueous solution... Accurate modeling of the solubility behavior of CO_2 in the aqueous alkanolamine solutions is important to design and optimization of equipment and process. In this work, the thermodynamics of CO_2 in aqueous solution of N-methyldiethanolamine(MDEA) and piperazine(PZ) is studied by the electrolyte non-random two liquids(NRTL) model. The chemical equilibrium constants are calculated from the free Gibbs energy of formation, and the Henry's constants of CO_2 in MDEA and PZ are regressed to revise the value in the pure water. New experimental data from literatures are added to the regression process. Therefore, this model should provide a comprehensive thermodynamic representation for the quaternary system with broader ranges and more accurate predictions than previous work. Model results are compared to the experimental vapor-liquid equilibrium(VLE), speciation and heat of absorption data, which show that the model can predict the experimental data with reasonable accuracy. 展开更多
关键词 N-METHYLDIETHANOLAMINE PIPERAZINE carbon dioxide electrolyte NRTL
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