Fouling Temp Analysis

7/30/2019 Fouling Temp Analysis

1/27

Process Chemistry Task Force

Temperature Analysis


2/27

Fouling Data Summary When?

T9 Temp CWS temp CWR T Fouling Reactor Month

2.08 8.03 2.53 FW 24 Feb-03

11.01 15.12 1.98 FS 24 May-03

FS 22 Jul-99

14.05 15.69 1.78 FS 26 Jul-01

0.00 19.66 2.22 FW 26 Sep-00

6.40 12.25 2.01 FW 22 Oct-03

7.79 18.36 2.25 FW 23 Nov-027.76 16.32 2.07 FW 22 Dec-03

3.05 9.85 1.37 FW 26 Dec-02

7.18 12.73 3.12 NFW 22 Jan-02

4.91 12.02 2.30 NFW 24 Jan-04

3.16 8.75 1.42 NFW 26 Jan-04

2.73 10.32 1.87 NFW 22 Feb-03

8.57 10.61 1.23 NFS 23 May-02

NFS 22 Jul-02

17.20 21.34 3.47 NFS 24 Jul-03

13.23 15.68 0.91 NFS 26 Jul-03

2.77 9.22 2.36 NFW 23 Dec-01


3/27

Fouling Data Summary When?


7.18 12.73 3.12 NFW 22 Jan

4.91 12.02 2.30 NFW 24 Jan

3.16 8.75 1.42 NFW 26 Jan

2.08 8.03 2.53 FW 24 Feb

2.73 10.32 1.87 NFW 22 Feb

11.01 15.12 1.98 FS 24 May

8.57 10.61 1.23 NFS 23 May

FS 22 Jul

14.05 15.69 1.78 FS 26 Jul

NFS 22 Jul

17.20 21.34 3.47 NFS 24 Jul

13.23 15.68 0.91 NFS 26 Jul0.00 19.66 2.22 FW 26 Sep

6.40 12.25 2.01 FW 22 Oct

7.79 18.36 2.25 FW 23 Nov

7.76 16.32 2.07 FW 22 Dec

3.05 9.85 1.37 FW 26 Dec

2.77 9.22 2.36 NFW 23 Dec


4/27

Fouling Data Summary Since When?

Fouling Reactor Month

FS 22 Jul-99

FW 26 Sep-00

FS 26 Jul-01

FW 23 Nov-02

FW 26 Dec-02

FW 24 Feb-03

FS 24 May-03

FW 22 Oct-03

FW 22 Dec-03


5/27

Fouling Data Summary What Temp?


2.08 8.03 2.53 FW 24 Feb-03

3.16 8.75 1.42 NFW 26 Jan-04

2.77 9.22 2.36 NFW 23 Dec-01

3.05 9.85 1.37 FW 26 Dec-02

2.73 10.32 1.87 NFW 22 Feb-03

8.57 10.61 1.23 NFS 23 May-02

4.91 12.02 2.30 NFW 24 Jan-04

6.40 12.25 2.01 FW 22 Oct-03

7.18 12.73 3.12 NFW 22 Jan-02

11.01 15.12 1.98 FS 24 May-03

13.23 15.68 0.91 NFS 26 Jul-03

14.05 15.69 1.78 FS 26 Jul-017.76 16.32 2.07 FW 22 Dec-03

7.79 18.36 2.25 FW 23 Nov-02

0.00 19.66 2.22 FW 26 Sep-00

17.20 21.34 3.47 NFS 24 Jul-03


6/27

Fouling Data Summary What Plant Load?

CWS temp CWR T Fouling Reactor Month

15.68 0.91 NFS 26 Jul-03

10.61 1.23 NFS 23 May-02

9.85 1.37 FW 26 Dec-02

8.75 1.42 NFW 26 Jan-04

15.69 1.78 FS 26 Jul-01

10.32 1.87 NFW 22 Feb-0315.12 1.98 FS 24 May-03

12.25 2.01 FW 22 Oct-03

16.32 2.07 FW 22 Dec-03

19.66 2.22 FW 26 Sep-00

18.36 2.25 FW 23 Nov-02

12.02 2.30 NFW 24 Jan-04

9.22 2.36 NFW 23 Dec-01

8.03 2.53 FW 24 Feb-03

12.73 3.12 NFW 22 Jan-02

21.34 3.47 NFS 24 Jul-03


7/27

Contents Temp (C) for the conversion period of batches of DP300

0

20

40

60

80

100

120

00:00

00:02

00:06

00:10

00:14

00:18

00:22

00:26

00:29

00:33

00:37

00:41

00:45

00:49

00:53

00:57

01:00

01:04

01:08

01:12

01:16

01:20

01:24

01:27

01:31

01:35

01:39

01:43

01:47

01:51

01:55

01:58

02:02

02:06

Time

Temp(C)

FS 23 NFW 23 NFW 23 FS 26 FS 26 NFS 26 FW 26 NFW 26 FS 24 NFS 24

FW 24 NFW 24 FW 22 NFS 22 FW 22 NFW 22 NFW 22


8/27

Contents Temp (C) for the conversion period of batches of DP300 Early Exotherm

0

20

40

60

80

100

120

00:00

00:02

00:06

00:10

00:14

00:18

00:22

00:26

00:29

00:33

00:37

00:41

00:45

00:49

00:53

00:57

01:00

01:04

01:08

01:12

01:16

01:20

01:24

01:27

01:31

01:35

01:39

01:43

01:47

01:51

01:55

01:58

02:02

02:06

Time

Temp(C)

FS 26 NFS 26 FW 26 NFW 26 FS 24 NFS 24 FW 24 NFW 24


9/27

Contents Temp (C) for the conversion period of batches of DP300 Middle Exotherm

0

20

40

60

80

100

120

00:00

00:02

00:06

00:10

00:14

00:18

00:22

00:26

00:29

00:33

00:37

00:41

00:45

00:49

00:53

00:57

01:00

01:04

01:08

01:12

01:16

01:20

01:24

01:27

01:31

01:35

01:39

01:43

01:47

01:51

01:55

01:58

02:02

02:06

Time

Temp(C)

FW 22 NFS 22 FW 22 NFW 22


10/27

Contents Temp (C) for the conversion period of batches of DP300 Late Exotherm

0

20

40

60

80

100

120

00:00

00:02

00:06

00:10

00:14

00:18

00:22

00:26

00:29

00:33

00:37

00:41

00:45

00:49

00:53

00:57

01:00

01:04

01:08

01:12

01:16

01:20

01:24

01:27

01:31

01:35

01:39

01:43

01:47

01:51

01:55

01:58

02:02

02:06

Time

Temp

(C)

FS 23 NFW 23 NFW 23 FS 26 NFW 22


11/27

Contents Temp (C) for the conversion period of batches of DP300

0

20

40

60

80

100

120

00:00

00:02

00:06

00:10

00:14

00:18

00:22

00:26

00:29

00:33

00:37

00:41

00:45

00:49

00:53

00:57

01:00

01:04

01:08

01:12

01:16

01:20

01:24

01:27

01:31

01:35

01:39

01:43

01:47

01:51

01:55

01:58

02:02

02:06

Time

Temp(C)

FS 23 FS 26 FS 26 NFS 26 FW 26 NFW 26


12/27

Contents Temp (C) for the conversion period of batches of DP300 produced on PV24

0

20

40

60

80

100

120

00:00

00:02

00:06

00:10

00:14

00:18

00:22

00:26

00:29

00:33

00:37

00:41

00:45

00:49

00:53

00:57

01:00

01:04

01:08

01:12

01:16

01:20

01:24

01:27

01:31

01:35

01:39

01:43

01:47

01:51

01:55

01:58

02:02

02:06

Time

Temp

(C)

0

20

40

60

80

100

120

Temp

(C)

FS 24 NFS 24 FW 24 NFW 24


13/27

Jacket Temp (C) for the conversion period of batches of DP300

0

20

40

60

80

100

120

00:00

00:02

00:06

00:10

00:14

00:18

00:22

00:26

00:29

00:33

00:37

00:41

00:45

00:49

00:53

00:57

01:00

01:04

01:08

01:12

01:16

01:20

01:24

01:27

01:31

01:35

01:39

01:43

01:47

01:51

01:55

01:58

02:02

02:06

Time

Te

mp(C)

0

20

40

60

80

100

120

Te

mp(C)

FS 26 FS 26 NFS 26 FW 26 NFW 26 FS 23


14/27

10 Point Moving Average TJacket (C) for the conversion period of batches of DP300

-20

-15

-10

-5

0

5

10

00:00

00:02

00:06

00:10

00:14

00:18

00:22

00:26

00:29

00:33

00:37

00:41

00:45

00:49

00:53

00:57

01:00

01:04

01:08

01:12

01:16

01:20

01:24

01:27

01:31

01:35

01:39

01:43

01:47

01:51

01:55

01:58

02:02

02:06

Time

Temp(C

)

0

20

40

60

80

100

120

Temp(C

)

FS 23 FS26 NFS 26 FW 26 NFW 26 FS 26


15/27

Factors affecting Exotherm for a warm weather (Sept) fouling batch of DP300 produced on PV26

0.00

0.10

0.20

0.30

0.40

0.50

0.60

0.70

0.80

0.90

1.00

21:21:55

21:25:

47

21:29:39

21:33:31

21:37:23

21:41:15

21:45:07

21:48:59

21:52:51

21:56:

43

22:00:35

22:04:27

22:08:

19

22:12:

11

22:16:03

22:19:55

22:23:

47

22:27:39

22:31:31

22:35:23

22:39:

15

22:43:07

22:46:59

22:50:51

22:54:43

22:58:35

23:02:27

23:06:

19

23:10:

11

23:14:03

23:17:55

23:21:47

23:25:39

23:29:31

Time

U(kW

/m/C)

-150

-100

-50

0

50

100

150

200

250

Temp(C)

&Qjkt(kW)

U Jkt (kW/m/C) Contents T(C) Q Rn (kW) JKT inlet (Tin) Q Jkt (kW)


16/27

LMTD (C) for the conversion period of batches of DP300

0

10

20

30

40

50

60

70

00:00

00:02

00:06

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00:14

00:18

00:22

00:26

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01:08

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01:16

01:20

01:24

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01:31

01:35

01:39

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02:02

02:06

Time

LMTD

(C)

0

20

40

60

80

100

120

Temp

(C)

FS 26 FS 26 NFS 26 FW 26 NFW 26 FS 23


17/27

Q Jacket (kW) for the conversion period of batches of DP300

-200

-150

-100

-50

0

50

100

150

200

250

00:00

00:02

00:06

00:10

00:14

00:18

00:22

00:26

00:29

00:33

00:37

00:41

00:45

00:49

00:53

00:57

01:00

01:04

01:08

01:12

01:16

01:20

01:24

01:27

01:31

01:35

01:39

01:43

01:47

01:51

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02:02

02:06

Time

Q(kW)

0

20

40

60

80

100

120

Temp

(C)

FS 26 FS 26 NFS 26 FW 26 NFW 26 FS 23


18/27

Q reaction (kW) for the conversion period of batches of DP300

-200

-100

0

100

200

300

400

500

00:00

00:02

00:06

00:10

00:14

00:18

00:22

00:26

00:29

00:33

00:37

00:41

00:45

00:49

00:53

00:57

01:00

01:04

01:08

01:12

01:16

01:20

01:24

01:27

01:31

01:35

01:39

01:43

01:47

01:51

01:55

01:58

02:02

02:06

Time

Q(kW)

0

20

40

60

80

100

120

Temp

(C)

FS 26 FS 26 NFS 26 FW 26 NFW 26 FS 23


19/27

U Jacket (W/m/C) for the conversion period of batches of DP300

0

100

200

300

400

500

600

700

800

900

1000

00:00

00:02

00:06

00:10

00:14

00:18

00:22

00:26

00:29

00:33

00:37

00:41

00:45

00:49

00:53

00:57

01:00

01:04

01:08

01:12

01:16

01:20

01:24

01:27

01:31

01:35

01:39

01:43

01:47

01:51

01:55

01:58

02:02

02:06

Time

U(W/m

/C)

0

20

40

60

80

100

120

Temp

(C)

FS 26 FS 26 NFS 26 FW 26 NFW 26 FS 23


20/27

20 Point Moving Average U Jacket (kW/m/C) for the conversion period of batches of DP300

0

200

400

600

800

1000

1200

1400

1600

1800

2000

00:00

00:02

00:06

00:10

00:14

00:18

00:22

00:26

00:29

00:33

00:37

00:41

00:45

00:49

00:53

00:57

01:00

01:04

01:08

01:12

01:16

01:20

01:24

01:27

01:31

01:35

01:39

01:43

01:47

01:51

01:55

01:58

02:02

02:06

Time

U(kW/m

/C)

0

20

40

60

80

100

120

Temp

(C)

FS 23 FS26 NFS 26 FW 26 NFW 26 FS 26


21/27

Instantaneous Mass conversion (kg) for the conversion period of batches of DP300

-10

0

10

20

30

40

50

60

00:00

00:02

00:06

00:10

00:14

00:18

00:22

00:26

00:29

00:33

00:37

00:41

00:45

00:49

00:53

00:57

01:00

01:04

01:08

01:12

01:16

01:20

01:24

01:27

01:31

01:35

01:39

01:43

01:47

01:51

01:55

01:58

02:02

02:06

Time

Kgconv

ersion

-20

0

20

40

60

80

100

120

Temp

(C)

FS 26 FS 26 NFS 26 FW 26 NFW 26 FS 23


22/27

Instantaneous Mass conversion (kg) for the conversion period of batches of DP300

-10

-8

-6

-4

-2

0

2

4

6

8

10

00:00

00:02

00:06

00:10

00:14

00:18

00:22

00:26

00:29

00:33

00:37

00:41

00:45

00:49

00:53

00:57

01:00

01:04

01:08

01:12

01:16

01:20

01:24

01:27

01:31

01:35

01:39

01:43

01:47

01:51

01:55

01:58

02:02

02:06

Time

Kgconv

ersion

20

30

40

50

60

70

80

90

100

110

120

Temp

(C)

FS 26 FS 26 NFS 26 FW 26 NFW 26 FS 23


23/27

Peak Aligned Instantaneous conversion (%) for the conversion period of batches of DP300

-2

-1

0

1

2

3

4

5

6

7

8

00:00

00:02

00:06

00:10

00:14

00:18

00:22

00:26

00:29

00:33

00:37

00:41

00:45

00:49

00:53

00:57

01:00

01:04

01:08

01:12

01:16

01:20

01:24

01:27

01:31

01:35

01:39

01:43

01:47

01:51

01:55

01:58

02:02

02:06

Time

%conversion

20

30

40

50

60

70

80

90

100

110

120

Temp

(C)

FS 26 FS 26 NFS 26 FW 26 NFW 26 FS 23


24/27

Peak Aligned Instantaneous conversion (%) for the conversion period of batches of DP300

-2

-2

-1

-1

0

1

1

2

2

00:00

00:02

00:06

00:10

00:14

00:18

00:22

00:26

00:29

00:33

00:37

00:41

00:45

00:49

00:53

00:57

01:00

01:04

01:08

01:12

01:16

01:20

01:24

01:27

01:31

01:35

01:39

01:43

01:47

01:51

01:55

01:58

02:02

02:06

Time

%conversion

40

50

60

70

80

90

100

110

120

Temp

(C)

FS 26 FS 26 NFS 26 FW 26 NFW 26 FS 23


25/27

Cumulative conversion (%) for the conversion period of batches of DP300

0

20

40

60

80

100

120

140

00:00

00:02

00:06

00:10

00:14

00:18

00:22

00:26

00:29

00:33

00:37

00:41

00:45

00:49

00:53

00:57

01:00

01:04

01:08

01:12

01:16

01:20

01:24

01:27

01:31

01:35

01:39

01:43

01:47

01:51

01:55

01:58

02:02

02:06

Time

%conversion

0

20

40

60

80

100

120

140

Temp

(C)

FS 26 FS 26 NFS 26 FW 26 NFW 26 FS 23


26/27

Cumulative conversion (%) for the conversion period of batches of DP300

0

20

40

60

80

100

120

140

00:00

00:02

00:06

00:10

00:14

00:18

00:22

00:26

00:29

00:33

00:37

00:41

00:45

00:49

00:53

00:57

01:00

01:04

01:08

01:12

01:16

01:20

01:24

01:27

01:31

01:35

01:39

01:43

01:47

01:51

01:55

01:58

02:02

02:06

Time

%conversion

0

20

40

60

80

100

120

140

Temp

(C)

FS 26 FS 26 NFS 26 FW 26 NFW 26 FS 23


27/27

Conclusions

Fouling may be associated with inhibition as indicated by

delayed cumulative conversion

No link between fouling and time of year or ambient

temp

No apparent link between coldness of jacket causing

increase in fouling

Changing heat transfer coefficient determines when

batches exotherm but is not significantly linked to fouling

Fouling doesnt appear to be linked to plant loading.

Fouling Temp Analysis

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