共查询到19条相似文献,搜索用时 265 毫秒
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天然气水合物(NGH)的研究是当今世界能源开发的热点。本文了介绍了天然气水合物储运方法的研究背景,总结了然气水合物储运方法的特点。分析总结了天然气水合物储运方法,关键技术及待解决的技术难点,并对天然气水合物储运技术的展望。 相似文献
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天然气水合物(NGH)的研究是当今世界能源开发的热点。本文了介绍了天然气水合物储运方法的研究背景,总结了然气水合物储运方法的特点。分析总结了天然气水合物储运方法,关键技术及待解决的技术难点,并对天然气水合物储运技术的展望。 相似文献
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目前我国很多生产企业使用的天然气总量非常大,再加上部分地区地理地貌较为复杂,采用天然气水合物储运技术,能够有效减少成本投入,并且可以使天然气能够安全送达,因此天然气水合物储运技术作为一种高效的运输方式在实际应用中的作用非常大,加强对天然气水合物储运技术的研究有重要意义,从而有效提高了天然气水合物储运技术的应用价值,为提... 相似文献
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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。 相似文献
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介绍了天然气运输的方式、天然气水合物的基本特性、生产原理、技术路线和几种生产工艺,分析了常见天然气储运方式的物理特性及其经济性,对天然气水合物储运技术的应用前景进行了展望. 相似文献
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对煤层气和水在一定条件下生成结晶状物质(NGH)从而使得煤层气以固态方式储运进行了研究。结果表明:NGH制备和储存条件温和,分解技术难度不大。与传统储运技术相比,应用NGH技术储运煤层气密度高、费用低,而且安全可靠,在煤层气储运和矿井瓦斯处理等方面都具有很高的应用价值。 相似文献
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Despite the fact that relatively little is known about the ultimate resource potential of natural gas hydrates, it is certain that gas hydrates are a vast storehouse of natural gas and significant technical challenges need to be met before this enormous resource can be considered an economically producible reserve. In this theoretical study, a simulation scheme was suggested to produce NGH in an industrial scale using pure water as a carrier and seawater as a cooling source. Parametric study was carried out and rigorous design calculations for different operating parameters were investigated. Further more and economical evaluation was done taken data of locally produced LNG as a comparison. Production rates, storage and transportation from production region to consumer's ends were investigated. Results obtained suggested that NGH with little consideration can be a good alternative for fuel gas carrier. 相似文献
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Chungang Xu Xiaosen Li Kefeng Yan Xuke Ruan Zhaoyang Chen Zhiming Xia 《中国化学工程学报》2019,27(9):1998-2013
Natural gas hydrate (NGH) is considered as an alternative energy resource in the future as it is proven to contain about 2 times carbon resources of those contained in the fossil energy on Earth. Gas hydrate technology is a new technology which can be extensively used in methane production from NGH, gas separation and purification, gas transportation, sea-water desalination, pipeline safety and phase change energy storage, etc. Since the 1980s, the gas hydrate technology has become a research hotspot worldwide because of its relatively economic and environmental friendly characteristics. China is a big energy consuming country with coal as a dominant energy. With the development of the society, energy shortage and environmental pollution are becoming great obstacles to the progress of the country. Therefore, in order to ensure the sustainable development of the society, it is of great significance to develop and utilize NGH and vigorously develop the gas hydrate technology. In this paper, the research advances in hydrate-based processes in China are comprehensively reviewed from different aspects, mainly including gas separation and purification, hydrate formation inhibition, sea-water desalination and methane exploitation from NGH by CH4-CO2 replacement. We are trying to show the relevant research in China, and at the same time, summarize the characteristics of the research and put forward the corresponding problems in a technical way. 相似文献
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Effect of additives on formation of natural gas hydrate 总被引:1,自引:0,他引:1
The formation of natural gas hydrate (NGH) is studied in this work. Kinetics data of hydrate formation with no agitation were collected at various concentrations of the aqueous solutions with different additives such as alkylpolyglucside, sodium dodecyl benzene sulfonate and potassium oxalate monohydrate. Various kinds of additive increased the formation rates of NGH and its storage capacity and reduced the induction time of NGH formation. Moreover, the storage capacity, the induction time and the hydrate formation rate were influenced by the concentration of the aqueous solution. 相似文献
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水合物储运(NGH)是近几年发展起来的天然气储运技术,已具备实现工业化的潜力。但水合物的生长是传质传热控制的反应,因此在放大实验中存在诸多不确定因素。针对该问题,对水合物反应器中多孔材料内甲烷水合物生成传热过程建立了基于化学反应动力学和多孔材料内传质传热的甲烷水合物生成传热数学模型,可用于计算反应器内水合物生成分布和热量分布,指导水合反应器的设计和优化。通过模拟与实验数据对比验证了该模型的可靠性,并对使用了不同热导率填料的水合反应过程进行数值模拟。结果显示,模拟值与实验值的绝对平均相对误差小于6%,生成传热模型准确性高;在水合反应过程中,热量传递是影响水合物生成速率的关键因素之一。导热不良时,易在水合物生成中心部分形成局部过热,对水合物生长造成热抑制。在进行水合物生成放大实验时,应特别注意反应器内部的热量控制。 相似文献
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本文简要介绍了英国天然气集输系统在节能优化方面采取的新技术,包括升级液化天然气存储,光纤检验,清除影响深海石油输送的障碍,实现自动化等先进集输技术,为提高我国天然气集输系统节能降耗技术提供可了参考意见,对建设节约型社会具有重要意义。 相似文献