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Study for utilization of methane/ethane hydrates and immobilization of carbon dioxide under the ocean on global warning

全球预警中甲烷/乙烷水合物的利用和海底二氧化碳固定化研究

基本信息

批准号：
13650818
负责人：
TANAKA Hiroyuki3
金额：
$ 2.3万
依托单位：
Nihon University
依托单位国家：
日本
项目类别：
Grant-in-Aid for Scientific Research (C)
财政年份：
2001
资助国家：
日本
起止时间：
2001 至 2002
项目状态：
已结题

项目摘要

The environmental problems on global warning are now very severe in the world. The typical global warning gas is carbon dioxide. In the world, the average amount of carbon dioxide produced per one person is approximately 10 kg per day, to keep the comfortable modern life. The treatment of carbon dioxide is important in the world.Aqueous solutions containing 2-aminoethanol or cyclohexylamine show excellent ability for the absorption of carbon dioxide of the typical global warming gas. The solutions can be recovered after boiling the solutions and further condensing the vapor except carbon dioxide in the process. In the design and operation of the recovery process, the vapor-liquid equilibria are required for the solutions concerned. In the present study, vapor-liquid equilibrium relations of the aqueous solutions containing 2-aminoethanol or cyclohexylamine are measured at atmospheric pressure To immobilize recovered carbon dioxide under the ocean, physical properties of methane/ethane hydrates is important to develop environmental technologies.Phase equilibria and saturated densities for ethane + 1-butanol system at high pressures were measures using a static-circulation apparatus at 313.15 K. The experimental apparatus equipped with three Anton Paar DMA 512S vibrating tube density meters was previously developed for measuring vapor-liquid-liquid equilibrium (VLLE) at high pressures. Co-existing phase composition and saturated density of each phase can be measured by means of the apparatus with a maximum temperature and pressure of 400 K and 20 Mpa, respectively. The present experimental results include vapor-liquid equilibria (VLE), liquid-liquid equilibria (LLE), and VLLE. The equilibrium composition and density of each phase were determined by gas chromatography and density measurements, respectively. The experimental data were correlated with various equations of state.

全球性的环境问题已经十分严重。典型的全球警告气体是二氧化碳。在世界范围内，平均每人每天产生的二氧化碳量约为10公斤，以保持舒适的现代生活。二氧化碳的处理在世界范围内都很重要，含有2-氨基乙醇或环己胺的水溶液对典型的全球变暖气体二氧化碳表现出优异的吸收能力。在该过程中，在使溶液沸腾并进一步冷凝除二氧化碳之外的蒸气之后，可以回收溶液。在回收过程的设计和操作中，需要对有关溶液进行汽液平衡。本文测定了常压下含2-氨基乙醇和环己胺水溶液的汽液平衡关系。甲烷/乙烷水合物的物理性质对环境保护技术的发展具有重要意义。循环装置在313.15K.实验装置配备了三个安东帕尔DMA 512 S振动管密度计先前开发的测量汽液液平衡（VLLE）在高压下。该装置可在最高温度400 K、最高压力20 MPa条件下测定共存相的组成和各相的饱和密度。本实验结果包括汽液平衡（VLE）、液液平衡（LLE）和VLLE。通过气相色谱和密度测量分别确定了各相的平衡组成和密度。用各种状态方程对实验数据进行了关联。