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Table 4 Composite samples: new NMR method vs combustion method

From: A 1H NMR method for the estimation of hydrogen content for all petroleum products

No.

Samplea name

H, by NMR

H, by combustion

Diff (%)

1

Feed crude 9

10.83

11.13

−2.7

6

Feed crude 9 (after 2 months)

10.54

11.03

−4.4

2

Pdt at rxn 380 °C (from crude 9)

12.24

11.51

6.3

3

Pdt at rxn 400 °C (from crude 9)

12.87

11.97

7.2

4

Pdt at rxn 420 °C (from crude 9)

13.08

11.91

9.8

5

Feed crude 10

11.88

11.57

2.7

7

Pdt at rxn 380 °C (from crude 10)

12.22

11.59

5.4

8

Pdt at rxn 400 °C (from crude 10)

12.40

11.96

3.7

9

Feed crude 11

11.50

11.55

−0.4

10

Pdt at rxn 400 °C (from crude 11)

12.95

11.88

9.0

11

Pdt cut IBP-70 °C (1)

15.95

12

Pdt cut IBP-70 °C (2)

15.84

13

Cut C5-140 (1)

15.10

14

Cut C5-140 (2)

14.51

15

Base case Pdt

14.20

14.41

−1.5

16

Diesel case Pdt

14.10

13.89

1.5

17

Pdt cut 70–200 °C (1)

13.74

12.21

12.5

18

Pdt cut 140–330 °C

13.36

12.93

3.3

19

Pdt cut 70–200 °C (2)

13.34

12.08

10.4

20

Pdt cut 330–400 °C

12.54

13.01

−3.4

21

Pdt cut 200+ °C

12.52

12.31

1.7

22

Exit Pdt

12.26

11.15

10.0

23

Pdt cut 400–480 °C

11.36

11.45

−0.8

24

Pdt cut 480+ °C

10.14

10.24

−1.0

25

VGO feed + 10 %LGO

11.43

11.86

−3.6

26

Pdt at MRU

10.36

10.58

−2.1

27

Mangala crude 2

12.94

12.98

−0.3

  1. aSamples are not conventional boiling fractions, either a mixture of several boiling range products or direct product from MRU/MFU/PP