کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
5162662 1502283 2015 8 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
High pressure water pyrolysis of coal to evaluate the role of pressure on hydrocarbon generation and source rock maturation at high maturities under geological conditions
ترجمه فارسی عنوان
پیلوریزاسیون زغال سنگ فشار بالا برای ارزیابی نقش فشار بر تولید هیدروکربن و بلوغ منبع سنگین در شرایط بالایی در شرایط زمین شناسی
کلمات کلیدی
زغال سنگ، تولید هیدروکربن، بلوغ، منعکس کننده ویت رنیت، پیرولیز هیدروژنی، فشار آب بالا،
موضوعات مرتبط
مهندسی و علوم پایه شیمی شیمی آلی
چکیده انگلیسی
This study investigates the effect of water pressure on hydrocarbon generation and source rock maturation at high maturities for a perhydrous Tertiary Arctic coal, Svalbard. Using a 25 ml Hastalloy vessel, the coal was pyrolysed under low water pressure (230-300 bar) and high water pressure (500, 700 and 900 bar) conditions between 380 °C and 420 °C for 24 h. At 380 °C and 420 °C, gas yields were not affected by pressure up to 700 bar, but were reduced slightly at 900 bar. At 380 °C, the expelled oil yield was highest at 230 bar, but reduced significantly at 900 bar. At 420 °C cracking of expelled oil to gas was retarded at 700 and 900 bar. As well as direct cracking of the coal, the main source of gas generation at high pressure at both 380 °C and 420 °C is from bitumen trapped in the coal, indicating that this is a key mechanism in high pressure geological basins. Vitrinite reflectance (VR) was reduced by 0.16 %Ro at 380 °C and by 0.27 %Ro at 420 °C at 900 bar compared to the low pressure runs, indicating that source rock maturation will be more retarded at higher maturities in high pressure geological basins.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Organic Geochemistry - Volume 78, January 2015, Pages 44-51
نویسندگان
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