The article considers the current problem of production process decarbonization as well as the possibility of reducing costs when implementing the Rosneft Oil Company "low-carbon" development Strategy. It is known that the most capital-intensive component of carbon dioxide sequestration projects Carbon Capture, Utilization and Storage (CCUS) is unit for carbon dioxide capture from flue gases (unit price may account for up to 2/3 of the CCUS project cost). The use of the classical technology of amine purification for capturing carbon dioxide from flue gases has a number of negative factors that significantly complicate the process of interaction of amine in the absorber with carbon dioxide, and directly affect the cost of the unit. These factors mainly include high flue gas temperature, low near-atmospheric pressure, and significantly different component composition of the inlet gas flow. In order to analyze to which extent key negative factors affect the process of carbon dioxide extraction from flue gases authors developed a technological model of amine treatment unit with the help of Aspen Hysys software with an additional Rate-Based Distillation module. According to Aspen consulting support service, this module is the best universal tool for modeling carbon dioxide sequestration processes. The performed model studies allowed to establish that to operate the absorber column at atmospheric pressure with the process temperature no higher than 45°C is the most expedient option. At the same time, it is rational to leave the composition of the initial flue gas flow unchanged (if there is no stable additional source of pure carbon dioxide). Determining the optimal parameters for the operation of an amine treatment unit will allow for significant savings in energy resources and contribute to reducing the total cost of unit for carbon dioxide capture from flue gases.
References
1. Syrchina N.V., Kantor G.Ya., Pugach V.N., Ashikhmina T.Ya., Contribution of carbon dioxide and water to the greenhouse effect (In Russ.), Teoreticheskaya i prikladnaya ekologiya, 2021, no. 4, pp. 218–223.
2. Davletbaev A.A., Teslyuk L.M., Intensifikatsiya dobychi nefti s pomoshch'yu tekhnologii sekvestratsii CO2 (Oil production enhancement with CO2 sequestration technology), Collected papers “Sistema upravleniya ekologicheskoy bezopasnost'yu” (Environmental safety management system), Proceedings of XV International Scientific and Practical Conference, Ekaterinburg: Publ. of UrFU, 2021, pp. 219–224.
3. Shvayber V.M., From the history of research on the greenhouse effect of the earth's atmosphere (In Russ.), Biosfera, 2013, V. 5, no. 1, pp. 37–44.
4. Otchet kompanii Vygon Consulting. CCUS: Monetizatsiya vybrosov CO2 (Vygon Consulting report. CCUS: Monetization of CO2 emissions), 2021, 48 p., URL: https://vygon.consulting/upload/iblock/967/jzgys72b7ome167wi4dbao9fnsqsfj13/vygon_consulting_CCUS.pd....
5. Mofarahi M., Khojasteh Y., Khaledi H., Farahnak A., Design of CO2 absorption plant for recovery of CO2 from flue gases of gas turbine, Energy, 2008, V. 33(8), pp. 1311–1319, URL: https://doi.org/10.1016/j.energy.2008.02.013
6. Chavez R-H., Guadarrama J.J., Numerical evaluation of CO2 capture on post-combustion processes, Chemical engineering transactions, 2015, V.45, pp. 271–276.
7. Bogomolov A.R., Dvorovenko I.V., Kryukov S.V., Chemakin M.A., Eksperimental'nyy stend po snizheniyu vrednykh vybrosov i uglekislogo gaza v dymovykh gazakh teplovykh elektrostantsiy (Experimental bench for reducing harmful emissions and carbon dioxide in the flue gases of thermal power plants), Proceedings of III Vserossiyskoy konferentsii “Khimiya i khimicheskaya tekhnologiya: dostizheniya i perspektivy” (Chemistry and chemical technology: Achievements and prospects), 2016, pp. 78–81.
8. Carbon dioxide as a raw material for large-tonnage chemistry (In Russ.), Neftegaz.ru, 2019, no. 9, URL: https://magazine.neftegaz.ru/articles/pererabotka/497100-uglekislyy-gaz-kak-syre-dlya-krupnotonnazhn...
9. Zakharevich Yu.S., Yur'ev E.M., Simulation of scheme of flue gas amine treatment from carbon dioxide at reduced pressure in Aspen Hysys software (In Russ.), Neftegazovoe delo, 2022, no. 4, pp. 117-135, DOI: https://dx.doi.org/10.17122/ogbus-2022-4-117-135
10. Ushakova A.A., Izvlechenie uglekislogo gaza iz dymovykh gazov na predpriyatii AO “Altayvagon” (Extraction of carbon dioxide from flue gases at Altaivagon JSC), Collected papers “Tekhnologii i oborudovanie khimicheskoy, biotekhnologicheskoy i pishchevoy promyshlennosti” (Technologies and equipment for the chemical, biotechnological and food industries), Proceedings of XIII All-Russian Scientific and Practical Conference of Students, Postgraduates and Young Scientists with International Participation, Biysk, 2020, pp. 47–78.
11. Sipöcz N., Tobiesen F.A., Natural gas combined cycle power plants with CO2 capture opportunities to reduce cost, International Journal of Greenhouse Gas Control, 2012, no. 7, pp. 98–106, DOI:10.1016/J.IJGGC.2012.01.003
12. Griffin T., Bücker D., Pfeffer A., Technology options for gas turbine power generation with reduced CO2 emission, Journal of Engineering for Gas Turbines and Power, 2008, V. 130(4), DOI: https://doi.org/10.1115/1.2898717.
13. Weiland R.H., Hatcher N.A., What are the benefits from mass transfer rate-based simulation, Hydrocarbon processing, 2011, July, pp. 43–49.
14. Vardheim R., How Technology Centre Mongstad (TCM) plays a central role in progressing carbon capture globally, URL: https://ieaghg.org/docs/General_Docs/PCCC3_PDF/3_PCCC3_Vardheim.pdf
