水合物法分离混合物技术研究进展

发布时间：2018-02-04 00:20

本文关键词： 水合物分离混合物混合气分离溶液浓缩耦合　出处：《化工学报》2017年03期 　论文类型：期刊论文

【摘要】：综述了水合物生成法在溶液浓缩和混合气分离两大领域的研究进展。分析表明,水合物法在海水淡化、生物工程、油样分离等溶液分离过程均表现出了一定的应用价值,但仍存在浓缩液夹带、分离效率较低或分离压力高等问题而未能实现工业化应用。针对混合气的分离,与单独水合分离过程相比,包含有水合物生成的吸收-水合和吸附-水合双机制耦合分离技术表现出了气体处理量大、分离效率高、或可实现连续气体分离等优势。但与它们相关的一些基础性问题如水合物浆液的实际流动特性、水合物晶粒与多孔介质之间的作用关系等,需要进一步的研究或确认。在此基础上,对这些分离过程的继续研究给出了参考意见:溶液浓缩分离过程可着眼于开发更有效的水合物生成促进剂或耦合其他分离技术等;混合气分离方面可以在寻找更有效的水合物生成促进剂、明确采用乳液体系分离所得水合物浆液的实际流动特性、揭示采用含水多孔介质分离所得不同相之间的作用机制等方面展开。
[Abstract]:The research progress of hydrate formation method in solution concentration and mixture separation is reviewed. The analysis shows that hydrate method is used in seawater desalination and bioengineering. The separation process of oil sample and other solutions has shown certain application value, but there are still some problems such as entrainment of concentrated liquid, low separation efficiency or high separation pressure and so on. Compared with the single hydration separation process, the absorption-hydration and adsorption-hydration coupling separation technology with hydrates formation shows a large amount of gas treatment and high separation efficiency. But some basic problems related to them, such as the actual flow characteristics of hydrate slurry and the interaction between hydrate grains and porous media, can be realized. Need further study or confirmation. On this basis. Some suggestions are given for the further study of these separation processes: the solution concentration separation process can focus on the development of more effective accelerators for hydrate formation or coupling with other separation technologies; In the aspect of gas mixture separation, a more effective accelerator for hydrate formation can be found, and the actual flow characteristics of hydrate slurry separated by emulsion system can be determined. The mechanism of interaction between different phases separated by porous media with water was revealed.
【作者单位】：兰州石化职业技术学院应用化学系;西南石油大学油气藏地质及开发工程国家重点实验室;
【基金】：国家重点研发计划项目(2016YFC0304008)~~
【分类号】：TQ028
【正文快照】： 引言水合物是水分子和客体分子在合适条件下生成的与冰类似的笼形晶体物质,其中水分子通过氢键作用在客体分子周围形成网状晶格,客体分子在内部起到稳定晶格的作用[1]。受水合物晶格尺寸的限制,能够在水合物晶格中稳定存在的客体分子主要包括一些小分子气体(H2、CH4、N2、CO2

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