cost effective-high performance antiscalant ‘albrivap...
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“Cost effective-High performance antiscalant‘ALBRIVAP® DSB (M) A’ in MSF Units”
Dr. Mohamed MatarGlobal Technical Development Manager
Overview Case Study of evaluation of ALBRIVAP DSB(M)A in MSF unit
Plant information
Monitoring operating Parameters
Monitoring Chemical Parameters
Chemical Dosing Control & Optimization
Unit Inspection & Results
Plant Information
MSF Unit Manufactured by Weir Westgarth
Plant unit capacity 7.5 MIGD
Operating Top Brine Temperature: 105 °C – 110 °C
Evaluation Period: 3 Months
MONITORINGOperating Parameters
Monitoring Operating & Performance Parameters
MONITORINGOperative Parameters
Temperature Bahviour- TBT
Top Brine temperature has been Kept at average value of 105
MONITORINGOperating Parameters
90.0
95.0
100.0
105.0
110.0
115.0
1 4 7 10 13 16 19 22 25 28 31 34 37 40 43 46 49 52 55 58 61 64 67 70 73 76 79 82 85 88 91 94 97
TBT (0C)
Days of the trial
Top Brine Temperature
Temperature Behavior
Slight Increase on sea water temperature towards the end led to decrease in flash range
MONITORINGOperating Parameters
0.0
10.0
20.0
30.0
40.0
50.0
60.0
70.0
80.0
0 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95
Tempe
ratu
re
Days of the Trial
Temperature comparison
Sea Water Brine Bottom Make‐Up Flash Range
Distillate Production
Water Production has similar trend as Flash range
MONITORINGOperating Parameters
0.0
10.0
20.0
30.0
40.0
50.0
60.0
70.0
80.0
90.0
0
500
1,000
1,500
2,000
2,500
0 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90
FalshRan
ge oC
Distilation
prod
uction m
3/hr
Days of the trial
Water Production vs Flash Range
Distillate Production Flash Range
G.O.R - Gained Output Ratio
G.O.R has been maintained at the average value of 9
MONITORINGOperating Parameters
6.0
7.0
8.0
9.0
10.0
0 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95
G.O
.R.
Days of the trial
Gained Output Ratio
Fouling Resistance
ALBRIVAP DSB(M)a managed to keep the unit as clean as original status and retard any alkaline scale formation
MONITORINGOperating Parameters
0.00
0.50
1.00
1.50
2.00
2.50
3.00
0 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95
Fouling Res
istanc
e m
2 k/ w
*10^‐4
Days of the trial
Fouling Resistance
Brine Chemistry Monitoring
MonitoringBrine Chemistry
Chemical Dose Monitoring
The Dose rate has been successfully kept within 5% range from the target dose rate during most of the trial
MONITORINGOperating Parameters
0
0.5
1
1.5
2
2.5
3
3.5
4
4.5
5
1 4 7 10 13 16 19 22 25 28 31 34 37 40 43 46 49 52 55 58 61 64 67 70 73 76 79 82 85 88 91 94 97
Dos
e Rate (p
pm )
Days of the trial
ALBRIVAP® DSB(M) A Dose Rate
Analysed dose rate Target Dose Rate Dose rate from flow
Residual Antiscalant Concentration
ALBRIVAP DSB(M)A is monitored directly from the brine by simple field testand the residual has been kept above the value of 1.5 ppm all over the trial asa safety margin.
0
1
2
3
4
5
1 6 11 16 21 26 31 36 41 46 51 56 61 66 71 76 81 86 91 96
Rec
ycle
Brine RA
P (ppm
)
Days of The Trial
Reserve Antiscalant Present (ppm)
MonitoringBrine Chemistry
Recycle Brine Concentration Ratio
The operation team were successfully managed to control the C.R less thanthe value 1.5 along the trial period
1.00
1.10
1.20
1.30
1.40
1.50
1.60
1.70
1.80
0 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95
Rec
ycle Brine CR
Days of The Trial
Recycle Brine Concentration Ratio
MonitoringBrine Chemistry
Loss of AlkalinityLTA values has been remained under 4 ppm most of the trial
0.0
2.0
4.0
6.0
8.0
10.0
1 4 7 10 13 16 19 22 25 28 31 34 37 40 43 46 49 52 55 58 61 64 67 70 73 76 79 82 85 88 91 94 97
LTA (p
pm)
Days of The Trial
Loss of Total Alkalinity (LTA)
MonitoringBrine Chemistry
Plant Inspection& Results
BEFORE TRIAL
BRINE HEATER TUBES
AFTER TRIAL
Plant Inspection & Results
Plant Inspection& Results
DEMISTER PAD
BEFORE TRIAL AFTER TRIAL
Plant Inspection & Results
a) Thermal Efficiency were Steady & Stable over trial period
b) G.O.R successfully maintained between 9 and 10
c) T.B.T. maintained in the range of 105-110°C
d) Albrivap DSB (M) A average dosage 2 ppm were successfully maintained
the unit clean
e) Analysis of the brine chemistry concluded that there would be no risk of
forming hard alkaline scale on the heat transfer surfaces This was confirmed
by the final inspection.
Conclusions
Thank you
Special Gratitude to DEWA team for the professional work done
Thanks to the valued Italmatch’s team members for their dedication,loyalty, commitment.
Thanks to the Co. Author Ing. Gianni Pilati “Global BusinessDevelopment manager” for his support