915 resultados para liquefied natural gas
Resumo:
化石燃料的燃烧是百余年来大气中二氧化碳（CO2）浓度增加的主要原因。CO2的收集和处置则是抑制这一趋势的有效途径。本文通过对现有收集利用和处置技术的分析，认为火电厂是收集CO2的重点考虑对象；CO2用于三次采油及天然气回收在技术上和经济上比较可行；蓄水层储气前景广阔值得研究；深海处置有待进一步探索；CO2用于置换开采天然气水合物也是很有前景的方案。
The burning of fossil fuel is the primary cause to have the concentration of carbon dioxide（CO2） in atmosphere increased during the past more than a hundred of years,and the capture and disposal of CO2 is an effective method to control its rising tendency.By analysis of the current capture and disposal technologies of CO2,it is concluded that firepower plants are the key targets to capture CO2.The paper also puts forth that tertiary oil recovery and natural gas recovery with CO2 are feasible both technologically and economically;storage of CO2 in saline aquifer is a method of nice foreground and deserves to be researched; disposal of CO2 in deep seafloor will be further investigated;and displacement of gas hydrate with CO2 is a tempting programme also.
Resumo:
In this work, we investigate the dissociation behavior of natural gas hydrate in a closed system with microwave (MW) heating and hot water heating. The hydrate was formed at temperatures of 1-4 degrees C and pressures of 4.5-5.5 MPa. It was found that the gas hydrate dissociated more rapidly with microwave than with hot water heating. The rate of hydrate dissociation increased with increasing microwave power, and it was a function of microwave power. Furthermore, the temperature of the hydrate increased linearly with time during the microwave radiation.
Resumo:
The changes of electrical resistance (R) were studied experimentally in the process of CH4 hydrate formation and decomposition, using temperature and pressure as the auxiliary detecting methods simultaneously. The experiment results show that R increases with hydrate formation and decreases with hydrate decompositon. R is more sensitive to hydrate formation and decompositon than temperature or pressure, which indicates that the detection of R will be an effective means for detecting natural gas hydrate (NGH) quantitatively.
Isothermal Kinetics Modelling of the Fischer-Tropsch Synthesis over the Spray-Dried Fe-Cu-K Catalyst
