نشریه علمی فرآیند نو

نشریه علمی فرآیند نو

تحلیل فلرینگ روتین، طراحی و اجرای واحد بازیافت گاز مشعل: مطالعه موردی پالایش نفت تبریز

نوع مقاله : کاربردی

نویسندگان
1 مدیر مهندسی طرحها و توسعه، شرکت پالایش نفت تبریز، تبریز، آذربایجان شرقی، ایران
2 معاونت مهندسی طرحها و توسعه، شرکت پالایش نفت تبریز، تبریز، آذربایجان شرقی، ایران
3 رئیس پژوهش و فناوری، شرکت پالایش نفت تبریز، تبریز، آذربایجان شرقی، ایران
چکیده
فلرینگ روتین در شرکت پالایش نفت تبریز با رویکردی یکپارچه شامل کاهش جریان در مبدأ و بازیافت گاز مشعل بررسی شد. ابتدا دبی و ترکیب گاز فلر پایش و دبی‌های اندازه‌گیری‌شده بر اساس ترکیب گاز تصحیح شد. سپس ۴۹۲ نقطه در شبکه فلر بررسی شد تا منابع قابل اجتناب شناسایی شوند. دبی پایدار فلرینگ روتین حدود 8/2 تا 9/2 تن‌برساعت برآورد شد و ۲۳ نقطه در افزایش آن نقش مؤثر داشتند. اقدامات اصلاحی، فلرینگ روتین را حدود ۷۰۰ تا ۸۰۰ کیلوگرم‌برساعت کاهش داد. گاز باقیمانده در واحد اجراشده، شامل جداسازی مایعات، تراکم دومرحله‌ای با کمپرسور رینگ مایع، خنک‌کاری بین‌مرحله‌ای، جذب آمین و ارسال به شبکه سوخت، بازیافت شد. میانگین دبی عملیاتی گاز بازیافتی حدود ۱۰۵۰ نرمال‌مترمکعب‌برساعت بود. منفعت خالص عملیاتی 76/0 میلیون دلار در سال، دوره بازگشت سرمایه ۵/۵ تا ۶ سال و کاهش انتشار ناخالص حدود ۲۷ هزار تن CO2 در سال برآورد شد.
کلیدواژه‌ها
موضوعات

عنوان مقاله English

Routine Flaring Analysis, Design and Implementation of a Flare Gas Recovery Unit: A Case Study of Tabriz Oil Refining Company

نویسندگان English

Hossein Ghasempour 1
Asghar Abdolmohammadi 2
Ali Tarjomannejad 3
1 Manager of Engineering Projects and Development, Tabriz Oil Refining Company, Tabriz, East Azerbaijan, Iran
2 Deputy of Engineering Projects and Development, Tabriz Oil Refining Company, Tabriz, East Azerbaijan, Iran
3 Head of Research and Technology, Tabriz Oil Refinery Company, Tabriz, East Azerbaijan, Iran
چکیده English

Routine flaring at Tabriz Oil Refining Company was investigated through an integrated approach combining source reduction and flare gas recovery. The study first monitored flare gas flowrate and composition, corrected measured flowrates based on gas composition, and inspected 492 points in the flare network to identify avoidable flaring sources. The stable routine flaring rate was estimated at 2.8–2.9 t/h, and 23 points were found to have a significant contribution. Corrective actions reduced routine flaring by about 700–800 kg/h. The remaining recoverable gas was then treated in an implemented flare gas recovery unit consisting of liquid separation, two-stage liquid ring compression, interstage cooling, amine absorption, and delivery to the fuel gas network. The average recovered gas flowrate was about 1050 Nm³/h. The project achieved an estimated net operating benefit of 0.76 million USD/year, a simple payback period of 5.5–6 years, and gross avoided CO₂ emissions of about 27,000 t/year.

کلیدواژه‌ها English

Flare system
Flare gas recovery
Emission reduction
Refinery fuel gas
Liquid-ring compressor
[1] American Petroleum Institute, Pressure-Relieving and Depressuring Systems, 7th ed. Washington, DC: American Petroleum Institute, 2020.
[2] International Organization for Standardization, Petroleum, Petrochemical and Natural Gas Industries—Pressure-Relieving and Depressuring Systems, ISO 23251:2019. Geneva, Switzerland: International Organization for Standardization, 2019.
[3] U.S. Environmental Protection Agency, AP-42: Compilation of Air Pollutant Emission Factors from Stationary Sources, Volume I, Chapter 13.5: Industrial Flares. Research Triangle Park, NC: U.S. Environmental Protection Agency, Sep. 1991.
[4] World Bank, Global Gas Flaring Tracker Report 2025. Washington, DC: World Bank, 2025.
[5] M. R. Johnson and A. R. Coderre, “Opportunities for CO₂ equivalent emissions reductions via flare and vent mitigation: A case study for Alberta, Canada,” International Journal of Greenhouse Gas Control, vol. 8, pp. 121–131, 2012.
[6] O. Zadakbar, A. Vatani, and K. Karimpour, “Flare gas recovery in oil and gas refineries,” Oil & Gas Science and Technology – Revue d’IFP, vol. 63, no. 6, pp. 705–711, 2008.
[7] M. R. Rahimpour, Z. Jamshidnejad, S. M. Jokar, G. Karimi, A. Ghorbani, and A. H. Mohammadi, “A comparative study of three different methods for flare gas recovery of Asalooye Gas Refinery,” Journal of Natural Gas Science and Engineering, vol. 4, pp. 17–28, 2012.
[8] A. Jagannath, M. M. F. Hasan, F. M. Al-Fadhli, I. A. Karimi, and D. T. Allen, “Minimize flaring through integration with fuel gas networks,” Industrial & Engineering Chemistry Research, vol. 51, no. 39, pp. 12630–12641, 2012.
[9] M. Saidi, F. Siavashi, and M. R. Rahimpour, “Application of solid oxide fuel cell for flare gas recovery as a new approach; a case study for Asalouyeh gas processing plant, Iran,” Journal of Natural Gas Science and Engineering, vol. 17, pp. 13–25, Mar. 2014.
[10] A. O. Abdulrahman, D. Huisingh, and W. Hafkamp, “Sustainability improvements in Egypt’s oil and gas industry by implementation of flare gas recovery,” Journal of Cleaner Production, vol. 98, pp. 116–122, 2015.
[11] G. Comodi, M. Renzi, and M. Rossi, “Energy efficiency improvement in oil refineries through flare gas recovery technique to meet the emission trading targets,” Energy, vol. 109, pp. 1–12, Aug. 2016.
[12] N. Tahouni, M. Gholami, and M. H. Panjeshahi, “Integration of flare gas with fuel gas network in refineries,” Energy, vol. 111, pp. 82–91, Sep. 2016.
[13] M. Zolfaghari, V. Pirouzfar, and H. Sakhaeinia, “Technical characterization and economic evaluation of recovery of flare gas in various gas-processing plants,” Energy, vol. 124, pp. 481–491, 2017.
[14] A. Hajizadeh, M. Mohamadi-Baghmolaei, R. Azin, S. Osfouri, and I. Heydari, “Technical and economic evaluation of flare gas recovery in a giant gas refinery,” Chemical Engineering Research and Design, vol. 131, pp. 506–519, 2018.
[15] E. Yazdani, J. Asadi, Y. Hosseinzadeh Dehaghani, and P. Kazempoor, “Flare gas recovery by liquid ring compressors—System design and simulation,” Journal of Natural Gas Science and Engineering, vol. 84, Art. no. 103627, 2020.
[16] A. Kazemi-Beydokhti, F. Neyestani, and M. Farrokhi, “Simulation and comparison of two flare gas recovery units using liquid ring and centrifuge compressors,” Nashrieh Shimi va Mohandesi Shimi Iran, vol. 41, no. 4, pp. 355–366, 2023.
[17] P. Promoppatum and V. Viswanathan, “Identifying material and device targets for a flare gas recovery system utilizing electrochemical conversion of methane to methanol,” ACS Sustainable Chemistry & Engineering, vol. 4, no. 3, pp. 1736–1745, 2016.
[18] N. Hajilary, M. Rezakazemi, and A. Shahi, “CO₂ emission reduction by zero flaring startup in gas refinery,” Materials Science for Energy Technologies, vol. 3, pp. 218–224, 2020.
[19] A. Khalili-Garakani, M. Iravaninia, and M. Nezhadfard, “A review on the potentials of flare gas recovery applications in Iran,” Journal of Cleaner Production, vol. 279, Art. no. 123345, 2021.
[20] M. Nezhadfard and A. Khalili-Garakani, “Power generation as a useful option for flare gas recovery: Enviro-economic evaluation of different scenarios,” Energy, vol. 204, Art. no. 117940, 2020.
[21] A. Khalili-Garakani, M. Nezhadfard, and M. Iravaninia, “Enviro-economic investigation of various flare gas recovery and utilization technologies in upstream and downstream of oil and gas industries,” Journal of Cleaner Production, vol. 346, Art. no. 131218, 2022.
[22] Intergovernmental Panel on Climate Change, 2006 IPCC Guidelines for National Greenhouse Gas Inventories, Volume 2: Energy, Chapter 2: Stationary Combustion. IPCC, 2006.