Review of hydrate reactor in natural gas hydrate storage and transportation

doi:10.16085/j.issn.1000-6613.2017-1969

Abstract

Abstract: Considerable gas storage rate (about 170 times as much as its volume) and self-preservation effect of natural gas hydrate (NGH) make itself as a favorable ways to storage and transport natural gas. Consequently, NGH has its own unique advantages when compared with LNG, CNG and other ways of natural gas storage and transportation. But, the study of NGH started late in comparison with other ways of natural gas storage and transportation. This way of natural gas storage and transportation has not yet reached maturity. Especially in the study of hydrate reactor. The hydrate formation rate or the gas consumption of reactor cannot attend the achieve requirements of industrial production. This paper investigates domestic and foreign literature and patents of NGH, introduces the development of natural gas hydrate storage and transportation technology, the chemical means and mechanical means of hydrate formation enhancement, the structure and working principle of three type traditional natural gas hydrate reactor, stirred, bubble and spray type reactor, and many new pattern natural gas hydrate like tube reactor, jet reactor and super-gravity reactor. In the existing reactors, the sprayed, super-gravity and fluidized bed reactors have better performance and prospects, and the amplification study of these three kind reactors should be accelerated. The coupling effect between different chemical means and different mechanical means have a significance for natural gas hydrate production. The evaluation system of hydrate reactors for the purpose of natural gas storage and transportation should be established.

Key words: storage and transportation of natural gas, hydrate, reactors, rapid formation

摘要： 可观的储气率与自保效应的存在使得天然气水合物能作为一种天然气储运的方式，并且在与其他如液化天然气、压缩天然气储运方式比较时有着自己独到的优势。但由于针对水合物储运的研究起步较晚，利用水合物储运天然气的技术尚未成熟。尤其是在水合物反应器的研究上，生成水合物的速率较低，无法达到工业生产所需要的水平。本文通过调研国内外文献与专利等资料，介绍了国内外天然气水合物储运技术发展状况，简述了水合物生成强化的物理化学手段与机械手段，详述了搅拌式等传统天然气水合物反应器与管式、超重力式等新型天然气水合物反应器的结构与工作原理。根据现有水合物反应器的特点与存在的问题，对水合物反应器的研究方向提出建议：未来应当加快对喷淋式、超重力式与流化床式反应器的放大研究，加快针对不同物理强化手段与机械强化手段的协同作用研究，建立起以天然气储运为目的的水合物反应器评价体系。

关键词: 天然气储运, 水合物, 反应器, 快速生成

CLC Number:

TE88

SHI Zhengzhuo, LI Yuxing, WANG Wuchang, SONG Guangchun, JIANG Kai, YAO Shupeng, ZHANG Yuqian. Review of hydrate reactor in natural gas hydrate storage and transportation[J]. Chemical Industry and Engineering Progress, 2018, 37(09): 3326-3336.

施政灼, 李玉星, 王武昌, 宋光春, 姜凯, 姚淑鹏, 张玉乾. 天然气水合物储运技术中水合物反应器的研究进展[J]. 化工进展, 2018, 37(09): 3326-3336.

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