Atmospheric-vacuum distillation of crude oil from the Sosninsko-Sovetsko-Medvedevskoye field in Tomsk Oblast
Abstract Generated abstract
This paper reports the fractional composition and selected physicochemical properties of crude oil from the Sosninsko-Sovetsko-Medvedevskoye field in Tomsk Oblast, with emphasis on evaluating potential yields of light and lubricating distillates. The crude oil was subjected to atmospheric-vacuum rectification on an ARN-2 apparatus, producing narrow fractions for which yields, boiling ranges, density, refractive index, molecular weight, viscosity, pour and flash points, sulfur content, and paraffin characteristics were determined where applicable. The resulting true-boiling-point and property curves indicate gasoline fraction yields of about 31.5 to 31.6 percent up to 200°C and kerosene fraction yields of about 51.7 to 52.0 percent up to 300°C, with a residue above 450°C of 20.7 percent.
Full Text
PROCEEDINGS
OF THE TOMSK POLYTECHNIC INSTITUTE
named after S. M. KIROV
Volume 198 1974
ATMOSPHERIC–VACUUM DISTILLATION OF CRUDE OIL FROM THE SOSNINSKO-SOVETSKO-MEDVEDEVSKOYE FIELD IN TOMSK OBLAST
N. M. SMOLYANINOVA, S. I. SMOLYANINOV, A. E. SHULIVEISTROV,
S. I. KHOROSHKO, E. R. TELITSINA
(Presented by the scientific-methodological seminar of the Faculty of Chemical Technology)
The fractional composition of crude oil is the most important characteristic, since it gives an idea of the content in the oil of light petroleum products and lubricating fractions.
Distillation curves of crude oil from well 18
The fractional composition is determined by atmospheric–vacuum rectification on an ARN-2 apparatus. Distillation is carried out into 3% frac-
Distillation of oil from well 10
| No. | Boiling temperature of the fraction at 760 mm Hg, °C | Yield on oil, % (wt.), individual fractions | Yield on oil, % (wt.), cumulative | Density, $\rho^{20}_{2}$ | Refractive index, $n^{20}_{D}$ | Mol. weight |
|---|---|---|---|---|---|---|
| 1 | Gas to 28 | 1.08 | 1.08 | — | — | — |
| 2 | 28—53 | 2.62 | 3.70 | 0.6347 | 1.3638 | 72.0 |
| 3 | 53—70 | 2.70 | 6.20 | 0.6906 | 1.3790 | — |
| 4 | 70—90 | 3.03 | 9.23 | 0.7178 | 1.3974 | 95.5 |
| 5 | 90—103 | 2.57 | 11.80 | 0.7290 | 1.4034 | — |
| 6 | 103—116 | 2.60 | 14.40 | 0.7415 | 1.4103 | 114.0 |
| 7 | 116—131 | 2.80 | 17.20 | 0.7725 | 1.4180 | — |
| 8 | 131—145 | 3.00 | 20.20 | 0.7620 | 1.4253 | 126 |
| 9 | 145—160 | 3.10 | 23.30 | 0.7737 | 1.4337 | — |
| 10 | 160—174 | 2.92 | 26.22 | 0.7840 | 1.4388 | 140.0 |
| 11 | 174—190 | 3.03 | 29.25 | 0.7947 | 1.4488 | — |
| 12 | 190—205 | 3.45 | 32.70 | 0.8070 | 1.4480 | 161.9 |
| 13 | 205—222 | 3.10 | 35.80 | 0.8182 | 1.4590 | — |
| 14 | 222—238 | 3.10 | 38.90 | 0.8275 | 1.4636 | 179.5 |
| 15 | 238—254 | 3.40 | 42.30 | 0.8364 | 1.4689 | — |
| 16 | 254—269 | 3.20 | 45.50 | 0.8430 | 1.4734 | 198.1 |
| 17 | 269—284 | 3.25 | 48.75 | 0.8512 | 1.4779 | — |
| 18 | 284—300 | 3.25 | 52.00 | 0.8588 | 1.4785 | 224.4 |
| 19 | 300—321 | 3.70 | 55.70 | 0.8620 | 1.4840 | 239.8 |
| 20 | 321—342 | 3.40 | 59.10 | 0.8748 | 1.4900 | 254.5 |
| 21 | 342—358 | 3.45 | 62.55 | 0.8822 | 1.4960 | 269.2 |
| 22 | 358—376 | 3.17 | 65.72 | 0.8910 | 1.5000 | 284.9 |
| 23 | 376—396 | 3.38 | 69.10 | 0.8990 | 1.5026 | 300.9 |
| 24 | 396—415 | 3.40 | 72.50 | 0.9086 | 316.7 | |
| 25 | 415—436 | 3.60 | 76.10 | 0.9171 | 345.2 | |
| 26 | 436—450 | 3.20 | 79.30 | 0.9255 | 387.8 | |
| 27 | residue | 20.70 | 100.00 | — | — |
...distillation; in this process the yields of the fractions and the temperature limits of their boiling are determined, and from the results a true-boiling-point curve (TBP) is constructed.
In addition to the TBP curve, the physicochemical properties of the fractions taken off are determined (density, molecular weight, viscosity at different temperatures, flash and pour points, sulfur and paraffin content). The data obtained are expressed as curves on the same graph on which the TBP curve is plotted.
Table 1
Characteristics of the fractions obtained in the ARN-2 apparatus
| Kinematic viscosity, cSt, at 20°C | Kinematic viscosity, cSt, at 50°C | Kinematic viscosity, cSt, at 100°C | Pour point, °C | Flash point, °C (open crucible) | Paraffin content, % | Paraffin melting point, °C | Sulfur content, % |
|---|---|---|---|---|---|---|---|
| — | — | — | — | — | — | — | — |
| — | — | — | — | — | — | — | residue |
| — | — | — | — | — | — | — | — |
| — | — | — | — | — | — | — | — |
| — | — | — | — | — | — | — | traces |
| 0,77 | — | — | — | — | — | — | — |
| 0,85 | — | — | — | — | — | — | traces |
| 0,96 | — | — | — | — | — | — | traces |
| 1,11 | — | — | — | — | — | — | — |
| 1,26 | — | — | — | — | — | — | 0,02 |
| 1,46 | — | — | \<−70 | — | — | — | — |
| 1,84 | — | — | −56 | — | — | — | 0,06 |
| 2,21 | 1,38 | — | −53 | 79 | — | — | 0,07 |
| 2,38 | 1,81 | — | −43 | 86 | — | — | — |
| 3,29 | 1,91 | 1,04 | −33 | 92 | — | — | 0,17 |
| 4,11 | 2,20 | 1,34 | −31 | 101 | — | — | — |
| 5,33 | 2,69 | 1,69 | −22 | 108 | — | — | 0,38 |
| 6,93 | 3,23 | 1,71 | −16 | 117 | — | — | 0,55 |
| 9,88 | 4,13 | 2,09 | −11 | 126 | — | — | — |
| 12,71 | 5,40 | 2,38 | −4 | 137 | — | — | — |
| 18,54 | 6,68 | 2,79 | — | 147 | — | — | 0,93 |
| 26,48 | 8,92 | 3,45 | 8 | 158 | — | — | 1,02 |
| — | 11,43 | 3,51 | 16 | 170 | 8,68 | 42 | — |
| — | 17,34 | 4,71 | 21 | 190 | 7,57 | 46 | 1,26 |
| — | — | 6,15 | 25 | 220 | 6,81 | 52 | 1,33 |
| — | — | — | 29 | 254 | 6,23 | 54 | 1,49 |
The property curves of narrow fractions make it possible to determine, by calculation, the quality of light and oil distillates obtained from the crude oil.
The potential content of fractions in the crude oil from well 18 of the Sosninsko-Sovetsko-Medvedevskoye field, as well as the results of its distillation in the ARN-2 apparatus and the characteristics of the fractions obtained, are given in Tables 1 and 2. Figure 1 presents the distillation curves for this crude oil, which show that the yield of gasoline fractions up to 200°C is 31,5%, and of kerosene fractions (up to 300°C), 51,7%.
Table 2
Distillation of oil from well 18 into 10° fractions in an ARN-2 apparatus
| No. | Fraction collection temperature limits, °C | Yield of individual fractions, % (wt.), based on oil | Total yield of fractions, % (wt.), based on oil |
|---|---|---|---|
| 1 | Ethane | 0.01 | 0.01 |
| 2 | Propane | 0.11 | 0.12 |
| 3 | i-Butane | 0.26 | 0.38 |
| 4 | n-Butane | 0.70 | 1.08 |
| 5 | 28—60 | 3.6 | 4.7 |
| 6 | 60—70 | 1.5 | 6.2 |
| 7 | 70—80 | 1.5 | 7.7 |
| 8 | 80—90 | 1.6 | 9.3 |
| 9 | 90—100 | 2.0 | 11.3 |
| 10 | 100—110 | 1.9 | 13.2 |
| 11 | 110—120 | 1.6 | 14.8 |
| 12 | 120—130 | 2.2 | 17.0 |
| 13 | 130—140 | 2.1 | 19.1 |
| 14 | 140—150 | 2.1 | 21.2 |
| 15 | 150—160 | 2.1 | 23.3 |
| 16 | 160—170 | 2.0 | 25.3 |
| 17 | 170—180 | 2.2 | 27.5 |
| 18 | 180—190 | 1.8 | 29.3 |
| 19 | 190—200 | 2.3 | 31.6 |
| 20 | 200—210 | 2.0 | 33.6 |
| 21 | 210—220 | 1.9 | 35.5 |
| 22 | 220—230 | 1.9 | 37.4 |
| 23 | 230—240 | 1.9 | 39.3 |
| 24 | 240—250 | 2.1 | 41.4 |
| 25 | 250—260 | 2.2 | 43.6 |
| 26 | 260—270 | 2.1 | 45.7 |
| 27 | 270—280 | 2.1 | 47.8 |
| 28 | 280—290 | 2.3 | 50.1 |
| 29 | 290—300 | 1.9 | 52.0 |
| 30 | 300—310 | 1.8 | 53.8 |
| 31 | 310—320 | 1.8 | 55.6 |
| 32 | 320—330 | 1.6 | 57.2 |
| 33 | 330—340 | 1.6 | 58.8 |
| 34 | 340—350 | 2.0 | 60.8 |
| 35 | 350—360 | 2.1 | 62.9 |
| 36 | 360—370 | 1.8 | 64.7 |
| 37 | 370—380 | 1.6 | 66.3 |
| 38 | 380—390 | 1.8 | 68.1 |
| 39 | 390—400 | 1.8 | 69.9 |
| 40 | 400—410 | 1.8 | 71.7 |
| 41 | 410—420 | 1.6 | 73.3 |
| 42 | 420—430 | 1.9 | 75.2 |
| 43 | 430—440 | 1.6 | 76.8 |
| 44 | 440—450 | 2.5 | 79.3 |
| 45 | Residue above 450° | 20.7 | 100.0 |