Oil Water Separator Sizing 5q1u6v
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- Words: 977
- Pages: 6
Project Client Service
Tag No : Type : Case :
Puma Energy Oil water separator
D-420 Conventational gravity separator Maximum design flow rate
Refer to API section 421 A. Determine the water flow rate Design maximum daily rainfall rate
=
0.315
Surface run - off coeff. For concrete pave area =
1.00
m/day
Width of bund wall Length of bund wall Surface area of bund wall Additional area from pump station, utilty, etc Total surface area
= = = = =
142.05 149.44 21226.49 2293.51 23520.00
m m m2 m2 m2
Water flow on the affected area Rainfall duration Total water collected
= = =
7408.80 1.00 7408.80
m3/day day m3
Time required for emptying water
=
48.00
hr
Water flowrate to oil water separator
=
154.35
m3/hr
50.00
m3/hr
Estimated
C. Determine total oily water load for oil water separator Discharge water rate as load for oil water separator = 154.35 Discharge oil rate as load for oil water separator = 50.00 Total oily water rate = 204.35 Design oily water rate for oil water separator = 224.79
m3/hr m3/hr m3/hr m3/hr
Design margin = 10 %
B. Determine the oil flow rate Design maximum oil drain from all bund wall area =
Oil content
=
24.47 244678.25
D. Conventational oil water separator sizing Oil globe diameter
=
0.00015
% volume ppmv
m
Typical oil globe diameter for gravity separation 3
Oil density
=
880.00
kg/m
Water density
=
1000.00
kg/m3
Water viscosity
=
0.001
kg/cm.sec
Gravitational acceleration
=
9.81
m/sec2
Oil vertical velocity [VT]
=
5.30
m/hr
Horizontal Velocity [VH1] Horizontal Velocity [VH2] Design horizontal velocity [VH]
= = =
79.46 54.86 54.86
m/hr m/hr m/hr
Minimum vertical cross sectional area
=
4.10
m2
Depth of oil water separator (H)
=
1.13
m
Commonly 3~8 ft
Acceptable
Width of oil water separator (W)
=
3.63
m
Commonly 6~20 ft
Acceptable
Ratio depth to width [H/W]
=
0.31
Commonly 0.3~0.5
Acceptable
[VH/VT] Turbulence and short circuit factor [F] Length of oil water separator [L1] Length of oil water separator [L2] Length of oil water separator [L]
= = = = =
10.36 1.53 17.86 18.13 18.13
m m m
E. Conclusion Dimension of conventational gravity oil water separator Proposed depth of oil water separator [H] = Proposed width of oil water separator [W] = Proposed lenght of oil water separator [L] =
1.15 3.65 18.20
m m m
Volume of oil water separator
76.39
m3
=
Maximum recommended value of VH is 3 ft/min or 54.864 m/hr Smaller value of VH is selected
Figure - Recommended value of F for various values of [VH/VT] Minimum [L/W] = 5 Higher value of L is selected
3 OF 3
3 OF 3
Project Client Service
Tag No : Type : Case :
Puma Energy Oil water separator
D-420 Conventational gravity separator Maximum design flow rate
Refer to API section 421 A. Determine the water flow rate Design maximum daily rainfall rate
=
0.315
Surface run - off coeff. For concrete pave area =
0.30
m/day
Width of bund wall Length of bund wall Surface area of bund wall Additional area from pump station, utilty, etc Total surface area
= = = = =
142.05 149.44 21226.49 2293.51 23520.00
m m m2 m2 m2
Water flow on the affected area Rainfall duration Total water collected
= = =
2222.64 1.00 2222.64
m3/day day m3
Time required for emptying water
=
48.00
hr
Water flowrate to oil water separator
=
46.31
m3/hr
50.00
m3/hr
Estimated
C. Determine total oily water load for oil water separator Discharge water rate as load for oil water separator = 46.31 Discharge oil rate as load for oil water separator = 50.00 Total oily water rate = 96.31 Design oily water rate for oil water separator = 105.94
m3/hr m3/hr m3/hr m3/hr
Design margin = 10 %
B. Determine the oil flow rate Design maximum oil drain from all bund wall area =
Oil content
=
51.92 519183.84
D. Conventational oil water separator sizing Oil globe diameter
=
0.00015
% volume ppmv
m
Typical oil globe diameter for gravity separation 3
Oil density
=
880.00
kg/m
Water density
=
1000.00
kg/m3
Water viscosity
=
0.001
kg/cm.sec
Gravitational acceleration
=
9.81
m/sec2
Oil vertical velocity [VT]
=
5.30
m/hr
Horizontal Velocity [VH1] Horizontal Velocity [VH2] Design horizontal velocity [VH]
= = =
79.46 54.86 54.86
m/hr m/hr m/hr
Minimum vertical cross sectional area
=
1.93
m2
Depth of oil water separator (H)
=
0.95
m
Commonly 3~8 ft
Acceptable
Width of oil water separator (W)
=
2.03
m
Commonly 6~20 ft
Acceptable
Ratio depth to width [H/W]
=
0.47
Commonly 0.3~0.5
Acceptable
[VH/VT] Turbulence and short circuit factor [F] Length of oil water separator [L1] Length of oil water separator [L2] Length of oil water separator [L]
= = = = =
10.36 1.53 15.02 10.16 10.16
m m m
E. Conclusion Dimension of conventational gravity oil water separator Proposed depth of oil water separator [H] = Proposed width of oil water separator [W] = Proposed lenght of oil water separator [L] =
1.00 2.00 10.00
m m m
Volume of oil water separator
20.00
m3
=
Maximum recommended value of VH is 3 ft/min or 54.864 m/hr Smaller value of VH is selected
Figure - Recommended value of F for various values of [VH/VT] Minimum [L/W] = 5 Higher value of L is selected
3 OF 3
3 OF 3
REFER TO FIGURE 4. API 421 F
4
1.325
6
1.4
8
1.45
10
1.52
12
1.575
14
1.625
15
1.675
16
1.72
18
1.75
1.8
y = 0.0308x + 1.2074 R² = 0.9949
1.7
1.6
F
VH/VT
1.575 1.52
1.5 1.45
1.4
1.4 1.325
1.3
1.2 3
4
5
6
7
8
9
10
11
12
[VH/VT]
13
1.75 1.72 1.675 1.625
1.575 F Linear (F)
12
13
14
15
16
17
18
19
Tag No : Type : Case :
Puma Energy Oil water separator
D-420 Conventational gravity separator Maximum design flow rate
Refer to API section 421 A. Determine the water flow rate Design maximum daily rainfall rate
=
0.315
Surface run - off coeff. For concrete pave area =
1.00
m/day
Width of bund wall Length of bund wall Surface area of bund wall Additional area from pump station, utilty, etc Total surface area
= = = = =
142.05 149.44 21226.49 2293.51 23520.00
m m m2 m2 m2
Water flow on the affected area Rainfall duration Total water collected
= = =
7408.80 1.00 7408.80
m3/day day m3
Time required for emptying water
=
48.00
hr
Water flowrate to oil water separator
=
154.35
m3/hr
50.00
m3/hr
Estimated
C. Determine total oily water load for oil water separator Discharge water rate as load for oil water separator = 154.35 Discharge oil rate as load for oil water separator = 50.00 Total oily water rate = 204.35 Design oily water rate for oil water separator = 224.79
m3/hr m3/hr m3/hr m3/hr
Design margin = 10 %
B. Determine the oil flow rate Design maximum oil drain from all bund wall area =
Oil content
=
24.47 244678.25
D. Conventational oil water separator sizing Oil globe diameter
=
0.00015
% volume ppmv
m
Typical oil globe diameter for gravity separation 3
Oil density
=
880.00
kg/m
Water density
=
1000.00
kg/m3
Water viscosity
=
0.001
kg/cm.sec
Gravitational acceleration
=
9.81
m/sec2
Oil vertical velocity [VT]
=
5.30
m/hr
Horizontal Velocity [VH1] Horizontal Velocity [VH2] Design horizontal velocity [VH]
= = =
79.46 54.86 54.86
m/hr m/hr m/hr
Minimum vertical cross sectional area
=
4.10
m2
Depth of oil water separator (H)
=
1.13
m
Commonly 3~8 ft
Acceptable
Width of oil water separator (W)
=
3.63
m
Commonly 6~20 ft
Acceptable
Ratio depth to width [H/W]
=
0.31
Commonly 0.3~0.5
Acceptable
[VH/VT] Turbulence and short circuit factor [F] Length of oil water separator [L1] Length of oil water separator [L2] Length of oil water separator [L]
= = = = =
10.36 1.53 17.86 18.13 18.13
m m m
E. Conclusion Dimension of conventational gravity oil water separator Proposed depth of oil water separator [H] = Proposed width of oil water separator [W] = Proposed lenght of oil water separator [L] =
1.15 3.65 18.20
m m m
Volume of oil water separator
76.39
m3
=
Maximum recommended value of VH is 3 ft/min or 54.864 m/hr Smaller value of VH is selected
Figure - Recommended value of F for various values of [VH/VT] Minimum [L/W] = 5 Higher value of L is selected
3 OF 3
3 OF 3
Project Client Service
Tag No : Type : Case :
Puma Energy Oil water separator
D-420 Conventational gravity separator Maximum design flow rate
Refer to API section 421 A. Determine the water flow rate Design maximum daily rainfall rate
=
0.315
Surface run - off coeff. For concrete pave area =
0.30
m/day
Width of bund wall Length of bund wall Surface area of bund wall Additional area from pump station, utilty, etc Total surface area
= = = = =
142.05 149.44 21226.49 2293.51 23520.00
m m m2 m2 m2
Water flow on the affected area Rainfall duration Total water collected
= = =
2222.64 1.00 2222.64
m3/day day m3
Time required for emptying water
=
48.00
hr
Water flowrate to oil water separator
=
46.31
m3/hr
50.00
m3/hr
Estimated
C. Determine total oily water load for oil water separator Discharge water rate as load for oil water separator = 46.31 Discharge oil rate as load for oil water separator = 50.00 Total oily water rate = 96.31 Design oily water rate for oil water separator = 105.94
m3/hr m3/hr m3/hr m3/hr
Design margin = 10 %
B. Determine the oil flow rate Design maximum oil drain from all bund wall area =
Oil content
=
51.92 519183.84
D. Conventational oil water separator sizing Oil globe diameter
=
0.00015
% volume ppmv
m
Typical oil globe diameter for gravity separation 3
Oil density
=
880.00
kg/m
Water density
=
1000.00
kg/m3
Water viscosity
=
0.001
kg/cm.sec
Gravitational acceleration
=
9.81
m/sec2
Oil vertical velocity [VT]
=
5.30
m/hr
Horizontal Velocity [VH1] Horizontal Velocity [VH2] Design horizontal velocity [VH]
= = =
79.46 54.86 54.86
m/hr m/hr m/hr
Minimum vertical cross sectional area
=
1.93
m2
Depth of oil water separator (H)
=
0.95
m
Commonly 3~8 ft
Acceptable
Width of oil water separator (W)
=
2.03
m
Commonly 6~20 ft
Acceptable
Ratio depth to width [H/W]
=
0.47
Commonly 0.3~0.5
Acceptable
[VH/VT] Turbulence and short circuit factor [F] Length of oil water separator [L1] Length of oil water separator [L2] Length of oil water separator [L]
= = = = =
10.36 1.53 15.02 10.16 10.16
m m m
E. Conclusion Dimension of conventational gravity oil water separator Proposed depth of oil water separator [H] = Proposed width of oil water separator [W] = Proposed lenght of oil water separator [L] =
1.00 2.00 10.00
m m m
Volume of oil water separator
20.00
m3
=
Maximum recommended value of VH is 3 ft/min or 54.864 m/hr Smaller value of VH is selected
Figure - Recommended value of F for various values of [VH/VT] Minimum [L/W] = 5 Higher value of L is selected
3 OF 3
3 OF 3
REFER TO FIGURE 4. API 421 F
4
1.325
6
1.4
8
1.45
10
1.52
12
1.575
14
1.625
15
1.675
16
1.72
18
1.75
1.8
y = 0.0308x + 1.2074 R² = 0.9949
1.7
1.6
F
VH/VT
1.575 1.52
1.5 1.45
1.4
1.4 1.325
1.3
1.2 3
4
5
6
7
8
9
10
11
12
[VH/VT]
13
1.75 1.72 1.675 1.625
1.575 F Linear (F)
12
13
14
15
16
17
18
19
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