Modified Polyolefins To Prevent Paraffin Deposits In Pipelines
Free (open access)
895 - 903
G. S. Aitkaliyeva, G. I. Boyko , R. G. Sarmurzina, U. S. Karabalin, N. P. Lubchenko, E. M. Shaikhutdinov & E. F. Aliyev
By chemical modification based on waste of polyolefins production, new reagents of complex action for oil production and transportation were developed. The structure of the obtained products was confirmed by 1H NMR and IR spectroscopy. Developed reagents were tested as inhibitors of ARPD and depressants. The assay object was highly paraffinic Kumkol oil that was characterized by low content of sulfur and asphaltene components. The depressor activity of reagents was determined by standard ASTM D5853- 09. The maximum decrease of the pour point and improvement of rheological properties was observed with the amount of the reagent 200–300 ppm; depression was 21°C. The effectiveness of inhibitors of ARPD was analyzed by the \“Cold rod” method according to RD 39-3-1273-85. The results indicated sufficiently high inhibitory activity of reagent: the inhibition rate was 73% at joint heat treatment and entering additives into oil. With the use of the X-ray diffraction method, the effects of inhibitors on the structure of the samples of asphaltene deposits were controlled. It was revealed that the modified polyolefins were able to change the phase composition of deposits, thereby improving the rheological properties of oil. Energy Production and Management in the 21st Century, Vol. 2 895 www.witpress.com, ISSN 1743-3541 (on-line) WIT Transactions on Ecology and The Environment, Vol 190, © 2014 WIT Press doi:10.2495/EQ140842 There was a high degree of amorphization ARPD entering the modified reagent: the content of the amorphous phase increased from 44% to 63%. Keywords: asphalt-resin-paraffin deposits (ARPD), inhibitor, depressants, structure of ARPD.
asphalt-resin-paraffin deposits (ARPD), inhibitor, depressants, structure of ARPD.