一种从水下天然气水合物沉积物中生产甲烷的替代方法

IF 2.8 Q2 MINING & MINERAL PROCESSING Mining of Mineral Deposits Pub Date : 2022-09-30 DOI:10.33271/mining16.03.011
V. Klymenko, Serhii Ovetskyi, V. Martynenko, O. Vytyaz, A. Uhrynovskyi
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引用次数: 9

摘要

目的。考虑到黑海典型的地质和热力学条件,利用水下泥火山的排放物确定从水下天然气水合物矿床生产甲烷的替代方法的潜在效率。方法。在Aspen Hysys程序的基础上,对考虑管道内供液热力参数变化和水合物沉积的过程进行了计算机模拟,采用Ng和Robinson模型计算流体的能量势。发现。在温度足以使海底水合物脱离热力学平衡并释放甲烷的情况下,已经开发出一种计算排放泥火山流可以输送到的距离的算法。提出了一种利用泥火山(流体)喷发能量从天然气水合物矿床生产甲烷的替代方法的技术方案。模型中还采用了泥火山和海底天然气水合物沉积物排放物收集装置。计算是用Aspen Hysys计算机程序完成的。创意。利用水下火山喷发的热能从天然气水合物海床沉积物中生产甲烷的替代方法的潜在效率得到了证实。研究还表明,当水合物矿床作为不透水层覆盖海床天然气矿床时,从海床天然气矿床中提取的气流热能可用于水合物的分解,这种情况类似于利用泥火山喷发热能的替代方法。实际意义。利用泥火山的排放物从海底天然气水合物沉积物中生产甲烷的另一种方法,可以在不使用额外热能的情况下,将从水下来源获得的气体量增加7-10%。这种方法的实际应用还将防止泥火山向大气排放甲烷,从而减少溶解气体对海洋的污染。
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An alternative method of methane production from deposits of subaquatic gas hydrates
Purpose. Determination of the potential efficiency of the alternative method of methane production from subaquatic gas hydrate deposits using the emissions of underwater mud volcanoes considering geological and thermodynamic conditions typical for the Black Sea. Methods. Computer modeling of the processes considering changing of the thermodynamic parameters of the supplying fluid within the pipeline and hydrate deposits was carried out on the basis of the Aspen Hysys program, using the Ng and Robinson model to calculate the energy potential of the fluid. Findings. An algorithm for calculating the distance to which a flow of the emissions mud volcano can be delivered with a temperature sufficient to remove sea bed hydrates from thermodynamic equilibrium and release methane has been developed. The schematic technological solution of an alternative method of methane production from gas hydrate deposits were presented by using the energy of emissions of mud volcano (fluid). The collection device for emissions of mud volcano and gas hydrate sea bed deposits were also been used within the model. The calculations have been done using Aspen Hysys computer program. Originality. The potential efficiency of the alternative method of methane production from gas hydrated sea bed deposits using thermal energy from emissions of underwater volcanoes is substantiated. It is also shown that in the case when the hydrate deposits cover the sea bed natural gas deposits as an impermeable layer, the thermal energy of the gas flow extracted from the sea bed natural gas deposits can be used for the decomposition of the hydrates This case is similar to the considered alternative method of using thermal energy of the emissions of mud volcanoes. Practical implications. The use of an alternative method of methane production from gas hydrate sea bed deposits by using emissions of mud volcano make it possible to increase the amount of gas obtained from subaquatic sources ~ by 7-10% without using additional sources of thermal energy. The practical application of this method will also prevent methane emissions from mud volcanoes into the atmosphere, which reduces pollution of seas and oceans with dissolved gases.
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来源期刊
Mining of Mineral Deposits
Mining of Mineral Deposits MINING & MINERAL PROCESSING-
CiteScore
5.20
自引率
15.80%
发文量
52
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