characterization of some kurdistan crude oils based on data analysis of astm distillation

Characterization of Some Kurdistan Crude Oils Based on Data Analysis of ASTM Distillation

Prepared by

Adulsamad Abdulhameed, Zahra Fakhir, and Haval Fatah3rd stage students, Faculty of Engineering, Chemical Engineering Department

Supervised by Prof. Dr. Ibtisam Kamal

Soran University/ Faculty of Engineering – Chemical Engineering Department

17th -18th May 2016

Contents• Introduction• Objectives• Experimental part• Estimated Data• Data Analysis• Results and discussion • Conclusions

IntroductionThe composition of the crude oil usually, is approximated as measured by True Boiling Point (TBP) distillation, this method is basically a batch distillation using number of stages and a high reflux ratio. However, the analytical procedure is expensive and time consuming, which is inappropriate for quick estimation of crude oil distillation characteristics.

Distillation Curve & The crude petroleum cuts Petroleum Distillation Tower and Products

Each type of crude oil will have a different, unique distillation curve that helps to describe it. As is shown, the distillation curve can be marked with the approximate locations of the fractions one will get out of the crude.

ASTM DistillationThere are many different types of ASTM distillation methods. These methods are laboratory tests, they are:

Simple distillation carried out with standard ASTM flask of 100, 200, 500 ml capacity. No reflux is provided. Rapid batch distillation employing no trays or reflux between the still pot and

condensation.

However, the separation is poorer: more volatile and high volatile components are present in initial condition.

Objectives

• Characterization of the volatility of three samples of crude oils from Tawke Field/ Zakhu Block operated by DNO, using ASTM Distillation Test.

• Estimation of the True Boiling Point Distillation data based on mathematical correlations.

• The analysis of distillation date will resulted in identification the distillation parameters including: IBP, FBP, BP range,

• Other characteristics could be estimated including Watson Factor (K), Correlation Index (CI),

Experimental part (Table of data)

% Volume

Distillate

Sample 1, Sp gravity =0.905

Sample 2, Sp gravity =0.914

Sample 3, Sp gravity= 0.919

Temp. oF Temp. oF Temp. oF

0 404 412 430

5 415 420 441

10 419 428 451

20 435 443 464

30 449 456 476

40 456 462 483

50 468 478 501

60 483 492 513

70 490 499 523

80 513 521 542

90 532 544 568

95 552 569 588

TBP and ASTM distillation:

Sample3 Sample 2 Sample 1

%VolumeDistillate

TBP(oC)

ASTM (oC)

TBP(oC)

ASTM(oC)

TBP(oC)

ASTM(oC)

185.82 221.11 177.55 212.22 172.38 206.67 0

219.82 232.78 206.26 220 200.97 215 10

243.33 246.67 231.83 235.56 227.8 231.67 30

264.08 260.55 256.17 247.78 245.31 242.22 50

282.16 272.78 268.29 259.44 263.09 254.44 70

311.61 297.78 297.81 284.44 290.91 277.78 90

323.47 308.89 312.27 298.33 302.25 288.89 95

Data analysis (Results and discussion)

Sample 3,Sp gravity =0.919



Properties

185.82 177.55 172.38 IBP of TBP

323.47 312.27 302.25 FBP of TBP

221.11 212.22 206.67 IBP of ASTM

308.89 298.33 288.89 FBP of ASTM

22.47 (Medium)

23.31 (Medium)

24.85 (Medium)

API

2.07

2.06 2.024 SL

Graphs:

0 10 20 30 40 50 60 70 80 90 1000

50100150200250300350

Sample 1

ASTM Distillation TBP Distillation

Volume % Distilled

Tem

pera

ture

( oC

)

0 10 20 30 40 50 60 70 80 90 1000

50100150200250300350

Sample 2


Volume % Distilled

Tem

pera

ture

( oC

)

0 10 20 30 40 50 60 70 80 90 1000

50100150200250300350

Sample 3


Volume % distilled

Tem

pera

ture

( oC

)

Conclusions

Thank You For Your Listening