共查询到19条相似文献,搜索用时 187 毫秒
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天然气吸附储存原理及其应用研究的建议 总被引:1,自引:0,他引:1
介绍了超级活性炭的性能和吸附储存天然气的原理,对天然气吸附存储的可能性及经济效益进行了分析预测,提出了进行吸附储存天然气研究所解决的相关问题。 相似文献
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由樊栓狮编著的《天然气水合物储存与运输技术》一书是《可再生能源丛书》中的一本。本书在介绍固态水合物储存和运输天然气技术(GtS)基本知识、基本原理的基础上,突出介绍提高水合物储气效率的措施和技术,着重介绍了GtS的工艺过程、应用领域、研究实例和进展。本书共分七章。 相似文献
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管束储气与高压球罐储气的比较 总被引:12,自引:10,他引:2
一、引言 城市用气量随着时间的推移在变化,而气源供气却一般变化不大。为调节用气与供气之间昼夜的不均衡,需要建设各种储气设施。常用的储气方法有输气管末段储气、天然气液化储存、储气罐站和管束储气。其中输气管末段储气是输气管的基本功能之一,我国已多处采用。天然气液化储存由于技术要求较高,装置规模小时经济性差。球罐储气,在我国已相继兴建,如北京、成都、重庆等大城市都建设了一批球罐。而管束储气 相似文献
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研究了压缩天然气加压站或加气站储气库储气容积分区的原理,指出分区的意义.建立了储气库储气容积分区方程组,得到分区压力、储气库容积、可供汽车气瓶容积等参数之间的关系.经过数值运算发现上述各参数在相当广的储气库储气容积分区比例范围内相当稳定,接近常数.提出了压缩天然气储气库储气容积分区的实用设计步骤. 相似文献
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以成型活性炭作为吸附剂,先进行了实验室吸附实验(以纯甲烷为实验气样,设置吸附温度分别为298. 15 K、303. 15 K、313. 15 K、323. 15 K,吸附压力≤5 MPa),再进行了中试实验(以管输天然气为实验气源,吸附温度为298. 15 K,吸附压力为3. 3~10. 0 MPa),并与CNG储运技术进行对比,得到以下结论:实验室吸附实验结果显示,当温度不变时,随着压力升高,吸附剂吸附天然气的量上升,增长速度与压力成负相关;当压力不变时,随着温度升高,吸附剂吸附天然气的量下降,下降速度几乎与温度无关。中试实验结果显示,在298. 15 K条件下,吸附剂吸附天然气的量随压力的升高而上升。通过对比可知,在温度、压力相同时,相同容积的储存容器,ANG储运技术的吸附体积比大于CNG储运技术的储存体积比,具有一定商业价值。针对中试实验存在较大吸附热效应的问题,可以降低充气速度,使吸附储罐充分与空气换热,将市场目标定位于对充气速度要求较低的市场。 相似文献
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Satyabrata Sahoo 《国际自然能源杂志》2016,37(4):372-383
A transient heat and mass transfer model is developed to simulate the performance of an adsorbed natural gas (ANG) storage system subjected to variable charge and discharge conditions. The obtained results are applicable for internal combustion engines with natural gas as the fuel. The ANG system performance is presented in terms of delivery capacity. Results are obtained for the cases of (i) constant pressure charging with a constant flow discharging and (ii) constant flow charging and discharging. Results show the importance of improving the heat transfer performance of the reactor, particularly at high specific gas flow rates. From the second law analysis of the system, it is seen that significant internal entropy generation occurs at high specific flow rate and low heating fluid temperatures. Based on the minimum specific entropy generation criterion, the optimum heating fluid temperatures for different ranges of specific flow rate of the adsorbate are found. 相似文献
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天然气水合物储运技术 总被引:1,自引:0,他引:1
天然气水合物是天然气储运的一种崭新方法,其比LNG技术节约资金24%以上,且更安全和环保。介绍了国内外天然气水合物研究开发概况;剖析了天然气水合物储运天然气的关键技术。但是天然气水合物储运技术至今世界上还没有一个国家达到工业化,更没形成成套技术,今后仍需在这方面进行深入研究。 相似文献
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《Energy and Buildings》2004,36(2):195-203
The aim of this paper is to analyse the impact of different natural gas and electricity end-use technologies in the residential sector, which compete among themselves in terms of energy consumption and carbon emissions. The analysis of 17 different technology options, which were chosen in order to match the consumption behaviour of a typical Portuguese family, has shown that the use of electric heat pumps, both for space and water-heating, combined with the use of a natural gas cooker, leads to the lowest energy consumption and to the lowest environmental impacts in terms of carbon emissions. Considering only the running costs, this choice is 45% more economic than having a natural gas centralised heating system combined with a gas cooker, and is 60% more economic than having an electric resistance space heater combined with an electric storage water heater and electric cooker, which is the worst case. The life cycle cost (LCC) analysis shows that the economic optimum is reached by the combination of a natural gas water heater with an electric storage space heater, and a natural gas cooker. The cost of conserved carbon (CCC) analysis shows that the combination of an electric heat pump water heater with an electric storage space heater, and a natural gas cooker is the best option in terms of environmental performance. 相似文献
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含夹层盐岩储气库气体渗透规律研究 总被引:11,自引:6,他引:5
盐岩储气库气体密封性能是储气库的一项重要技术和安全指标,层状盐岩储气库极可能会使天然气沿着岩层逃逸,造成天然气的外部渗漏。含软弱夹层盐岩储气库的气体渗透机制十分复杂,含软弱夹层的渗流力学模型与数值计算方法是解决评估储气库气体渗透范围的关键。考虑夹层与盐岩层之间存在层面,假设软弱夹层和盐岩为多孔介质,建立了等效边界气体渗流模型,该模型既克服了等效介质模型不能正确反映层理面渗流问题,又克服了双孔双渗裂隙介质模型计算量大的缺点。结合金坛储气库建设,数值仿真了储气库在注–采气不同循环压力作用下5 a内围岩气体压力分布;研究了软弱夹层与盐岩的层理面渗透系数、采气速率和腔体群不同时注–采气等工况对储库围岩气体压力分布的影响。研究结果表明:层理面渗透系数对储气库压力分布有着至关重要的影响,溶腔群的采气速率和注–采方法对相邻矿柱的气体压力分布影响明显。研究结果为含夹层废弃盐腔储气库的设计和合理注采参数的确定提供了科学依据。 相似文献