کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
4768473 | 1424957 | 2017 | 10 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Chemical-structural properties of the coke produced by low temperature oxidation reactions during crude oil in-situ combustion
ترجمه فارسی عنوان
خواص شیمیایی ساختاری کک تولید شده توسط واکنشهای اکسیداسیون دمای پایین در هنگام احتراق در محل کار نفت خام
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کلمات کلیدی
LTOEDSISCMRSATR-FTIRTGAHRTEMIn-situ combustion - احتراق در محلEnergy-Dispersive X-ray Spectroscopy - اشعه ماوراء بنفش اشعه ایکس انرژیLow temperature oxidation - اکسیداسیون دمای پایینThermogravimetry analysis - تجزیه و تحلیل حرارتی سنجیRaman - رامانSARA - ساراAttenuated total reflection Fourier transform infrared spectroscopy - طیف سنجی مادون قرمز تبدیل فوریه تضعیف شده استHigh Resolution Transmission Electron Microscopy - میکروسکوپ الکترونی با وضوح بالاCrude oil - نفت خامX-ray diffraction - پراش اشعه ایکسXRD - پراش اشعه ایکسCoke - کک
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی شیمی
مهندسی شیمی (عمومی)
چکیده انگلیسی
Chemical-structural properties of the coke produced by crude oil low temperature oxidation (LTO) reactions during in-situ combustion are still highly lacking due to the difficulty in coked sand characterization. This study proposed an experimental methodology to prepare the useful LTO coke with the chemical-structural properties studied using a combination of Energy-dispersive X-ray spectroscopy, attenuated total reflection Fourier transform infrared spectroscopy, Raman spectroscopy, X-ray diffraction (XRD) and high resolution transmission electron microscopy (HRTEM) techniques. The XRD and the HRTEM analyses showed the LTO coke mainly consisted of highly disorder amorphous structures with limited amount of poorly order 'onion-like' structures. The LTO coke was found to contain numerous oxygen functionalities and highly-substituted aromatic rings. The concentration of the carbonyl showed no significant decline with the LTO temperature increasing to 310 °C. Nevertheless, the carbon structure with sp3-rich characteristics was found to selectively consumed by O2 to reduce the amount of coke deposition, and enriched the aromatic layer systems as inferred by Raman and FTIR analyses. There was a good agreement between the amount of the 'onion-like' structures viewed from HRTEM and the changes in the ether bridging groups. Additionally, the changes in the coke chemical-structural properties agreed with the measured coke reactivity by Thermogravimetric analyses.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Fuel - Volume 207, 1 November 2017, Pages 179-188
Journal: Fuel - Volume 207, 1 November 2017, Pages 179-188
نویسندگان
Qianghui Xu, Zhiming Liu, Hang Jiang, Qiang Zhang, Cheng Zan, Desheng Ma, Lin Shi,