Analiza parametara transporta sirove nafte pri izotermnom strujanju

##plugins.themes.bootstrap3.article.main##

Jasna Tolmač Slavica Prvulović Saša Jovanović Marija Nedić Aleksandra Aleksić Dragiša Tolmač

Apstrakt

U radu su prikazani rezultati eksperimentalnog istraživanja i simulacije parametara transporta sirove nafte cevima. Sadržaj parafina u nafti ima dominantan uticaj na svojstva parafinskih nafti, a posebno ima uticaj na smanjenje protočnih svojstava nafte. Zagrevanjem nafte poboljšavaju se protočna svojstva, smanjuje se viskoznost, kao i gubici pritiska na trenje pri transportu cevima. Fizičke osobine sirove nafte se modifikuju zagrevanjem kako bi se sprečio nastanak voska unutar naftovoda. Na osnovu eksperimentalnih i teorijskih istraživanja na realnom naftovodu prečnika 323 mm i dužine 1550 m, simulacijom pomoću softvera Origin, analiziran je uticaj promene temperature zagrevanja sirove nafte, viskoznosti i protoka, na pad pritiska i snagu pumpe. U zavisnosti od sadržaja parafina, nafta se zagreva na odgovarajuću temperaturu pre uvođenja u cevovod. Polazna temperatura nafte zavisi od sadržaja parafina i tačke tečenja. Razmatran je slučaj zagrevanja nafte na temperaturu 20 – 50 oC. Brzina hlađenja pri transportu nafte iznosi (0,52 – 0,55) oC/h. Pri transportu domaće parafinske nafte, vreme zastoja nebi trebalo da bude duže od 24 h, jer bi usled stajanja i hlađenja došlo do pojave čvrstih čestica parafina, a potom i do geliranja nafte u cevovodu. Sa smanjenjem temperature Δt =10 oC i posledično porastom viskoznosti, primetno je povećanje pada pritiska za 3 – 4 % i za toliko je potrebna i veća snaga pumpe.

##plugins.themes.bootstrap3.article.details##

Kako citirati
TOLMAČ, Jasna et al. Analiza parametara transporta sirove nafte pri izotermnom strujanju. Zbornik Međunarodnog kongresa o procesnoj industriji – Procesing, [S.l.], v. 34, n. 1, p. 157-163, july 2021. Dostupno na: <https://izdanja.smeits.rs/index.php/ptk/article/view/6585>. Datum pristupa: 17 oct. 2021 doi: https://doi.org/10.24094/ptk.021.34.1.157.
Sekcija
Osnovne operacije, aparati i mašine u procesnoj industriji

Reference

[1] Rukthong, Wanwisa, Piumsomboon, Pornpote, Weerapakkaroon, Wichapun: Computational Fluid Dynamics Simulation of a Crude Oil Transport Pipeline: Effect of Crude Oil Properties. Engineering journal, 2016; 70: 145-154.
[2] Danilovic Dusan S., Karovic-Maricic Vesna D., Secerov-Sokolovic Radmila M., Ivezic Dejan D., Zivković Marija A. : Laboratory testing and simulation of the paraffin deposition process in the oil field of the Turija field in Vojvodina. Chemical industry, 2011; 65: 249-256.
[3] Skrbic, B. : Transport of oil and gas, Faculty of Technology, Novi Sad, 2006.
[4] Danilovic, D., Karovic-Maricic, V., Ivezic, D., Batalovic, V., Zivkovic, M., Lekovic, B., Crnogorac, M. : Anal-ysis of applied heating systems for heating well pumps for the transport of paraffin oil in the fields of oil in-dustry of Serbia, Tehnika, 2012; 67: 919-923.
[5] Secerov-Sokolovic, Radmila M., Bjelovic Zoran V., Sokolovic Srdjan S. : Influence of solid paraffin content on the rheology of model oil, Chemical industry, 2006; 60: 10-14.
[6] Ahmadpour, K. Sadeghy, S.-R. Maddah-Sadatieh. : The effect of a variable plastic viscosity on the restart problem of pipelines filled with gelled waxy crude oils. J. Non-Newton, 2014; 205: 16–27.
[7] Sun Guangyu, Zhang Jinjun, Me Chenbo. : Start-up flow behavior of pipelines transporting waxy crude oil emulsion, Journal of petroleum science and engineering, 2016; 147 : 746-755.
[8] Cheng Qinglin, Pan Chenlin, Zhao Yan. : Phenomenological study on heat and mass coupling mechanism of waxy crude oil pipeline transport process, Journal of dispersion science and technology, 2018; 123: 43-55.
[9] Hussain H. Al-Kayiem, Wong Ning, Nassir Dhamin Mokhlif. : Characterisation of paraffinic compositions in crude oils, International Journal of Oil, Gas and Coal Technology, 2017; 15 (2).
[10] Davidson M.R., Nguyen Q.D., Chang C., Rningsen H.P. : A model for restart of a pipeline with compressible gelled waxy crude oil, J. Non-Newton. Fluid Mech. 2004; 123 (2), 269–280.
[11] Rules of operation of the transport system for oil pipeline transportation, Transnafta, Pancevo, 2010.
[12] Tolmac, J., Prvulovic, S., Nedic, M., Tolmac, D. : Analysis of crude oil pipeline transport parameters, Chem-ical Industry, 2020; 74(2) 79-90.
[13] Prstojevic, B. : Pipeline transport of oil and gas, Faculty of Mining and Geology, Belgrade, 2012.
[14] Tolmac, J., Tolmac, D., Prvulovic, S., Aleksic, A. : Basic Elements of Crude Oil Pipeline Transport, All Rus-sian Scientific Technical Conference: Problems of Geology, Hydrocarbons Exploitation and Transport, Tech-nical University of Uhta, 2017.
[15] Sasic, M. : Transport of fluids and solid materials by pipes, Scientific book, Belgrade, 1980.
[16] Prvulovic, S., Tolmac, D. : Transport Sistems - a collection of solved tasks, Technical Faculty "M. Pupin", Zrenjanin, 2012.
[17] Tanaskovic, P. : Transportation of Crude Oil and Gas Part II, Faculty of Mining and Geology, Belgrade, 1998.
[18] Prvulovic, S., Tolmac, D., Josimovic, Lj., Tolmac J. : Remote monitoring and control of pumping stations in the water supply systems, Facta universitatis - Mechanical Engineering, 2013; 11: 113-121.
[19] Tanaskovic, P. : Transport of crude oil and gas I part. Faculty of Mining and Geology, Belgrade, 1998.
[20] Tolmac, J., Prvulovic, S., Tolmac, D., Nedic, M. : Oil products and pumping stations. VII International Con-ference Industrial Engineering and Environmental Protection, Proceedings 2017; 44-49.