Oil Pool
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(FIVE YEARS 5)

2021 ◽  
pp. 073490412110301
Author(s):  
Yawei Wang ◽  
Gaowan Zou ◽  
Conglin Liu ◽  
Y Gao

The Halon 1301 fixed gas fire extinguishing system used in ship engine rooms has been banned from production all over the world, because halon destroys the ozone layer. Therefore, it is necessary to find an environmentally friendly, compatible and efficient alternative firefighting system. In this study, we performed fire extinguishing tests in an ISO9705 standard room for four alternative fire extinguishing agents, as well as Halon 1301. The fire extinguishing efficiency of each agent was determined based on its cooling effect, dilution effect of oxygen concentration, the extinguishing time of the oil pool fire and the re-ignition probability of the wood stack. The test results provide data support for the selection of alternatives of Halon 1301 from the aspect of fire extinguishing efficiency. Among these results, Novec 1230 had the best ability to put out the oil pool fire, and HFC-227ea suppressed the wood stack fire the best. The difference between the cooling ability of each fire extinguishing agent was small, and the inert gas (IG-541) displayed the best ability to dilute oxygen. Hot aerosol required the longest time to extinguish fire. Consequently, under the existing design standards, HFC-227ea had the better firefighting efficiency, more suitable to replace Halon 1301.


Author(s):  
Jie Yuan ◽  
Jinlong Zhao ◽  
Wei Wang ◽  
Rui Yang ◽  
Changkun Chen ◽  
...  

2021 ◽  
Vol 42 (8) ◽  
Author(s):  
Gang Wu ◽  
Xin Wang ◽  
Xingbo Xie ◽  
Chong Ji ◽  
Zhenru Gao ◽  
...  

2021 ◽  
Vol 33 (3) ◽  
pp. 034124
Author(s):  
K. Hasegawa ◽  
Y. Manzaki
Keyword(s):  

Energy ◽  
2021 ◽  
pp. 120181
Author(s):  
Lei Deng ◽  
Fei Tang ◽  
Xinkai Wang

Author(s):  
Muhammad Mohasan ◽  
Anas Bin Aqeel ◽  
Pengyu Lv ◽  
Yantao Yang ◽  
Huiling Duan
Keyword(s):  

Author(s):  
Mahesh Kumar Tiwari ◽  
Avinash Chaudhary ◽  
Akhilesh Gupta ◽  
Surendra Kumar

Author(s):  
Avinash Chaudhary ◽  
Mahesh Kumar Tiwari ◽  
Akhilesh Gupta ◽  
Surendra Kumar

2020 ◽  
Author(s):  
Chuanping Wu ◽  
Tiannian Zhou ◽  
Baohui Chen ◽  
Yu Liu ◽  
Ping Liang

Minerals ◽  
2020 ◽  
Vol 10 (7) ◽  
pp. 606
Author(s):  
Shaojie Li ◽  
Xuan-Ce Wang ◽  
Chao-Feng Li ◽  
Keyu Liu ◽  
Simon A. Wilde ◽  
...  

Direct dating of petroleum systems by hydrocarbon or associated authigenic minerals is crucial for petroleum system analysis and hydrocarbon exploration. The precipitation of authigenic pyrite in petroliferous basins is commonly genetically associated with hydrocarbon generation, migration, accumulation, or destruction. Pyrite rubidium-strontium (Rb-Sr) isotope dilution thermal ionization mass spectrometry (ID-TIMS) is a well-developed technique, and its successful application for high-temperature ore systems suggests that this dating method has the potential to directly date key processes in the low-temperature petroleum systems. Rb-Sr data for pyrites in two Ordovician carbonate rock specimens collected from ~4952 m in the YD-2 well in the Yudong region, northern Tarim Basin (NW China), yield two identical isochron ages within analytical uncertainties: 206 ± 13 (2σ) and 224 ± 28 Ma (2σ). SEM investigations demonstrate that Rb and Sr atoms mainly reside in the crystal lattice of the pyrites due to the absence of fluid and mineral inclusions. The rigorous Rb-Sr isochron relations documented in the samples indicate that such residency can result in sufficient Rb/Sr fractionation and initial Sr isotopic homogenization for geochronology. In addition, the closure temperature (227–320 °C) for the Rb-Sr isotope system in pyrite is higher than the precipitation temperature for pyrite in petroleum-related environments (below 200 °C), suggesting that the Rb-Sr age of pyrite was not overprinted by post-precipitation alteration. Integrating the lead-strontium-sulfur isotopes of the pyrites with burial history analysis, the ages are interpreted as the timing of alteration of the paleo-oil pool by a hydrothermally-triggered thermochemical sulfate reduction process. This study, for the first time, demonstrates that Rb-Sr pyrite geochronology, combined with radiogenic and stable isotopic analyses, can be a useful tool to evaluate the temporal evolution of oil pools. This approach bears great potential for dating of petroleum systems anywhere else in the world.


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