SEPARATOR SIZING SPRE
MAIN MENU
INSTRUCTIONS
HORIZONTAL SEPARATOR ( 3 PHASE WITH BOOT)
HORIZONTAL SEPARATOR ( 3 PHASE, NO BOOT, DRAW OFF PIPE FOR CONDENSATE )
VERTICAL SEPARATOR ( 2 PHASE )
DSHEET
REV: DATE:
A FEBRUARY 1999
SPREADSHEET INFORMATION
HORIZONTAL SEPARATOR ( 3 PHASE, NO BOOT, WEIRPLATE PARTITION )
HORIZONTAL SEPARATOR ( 2 PHASE )
FILE SEPARP1.XLS
SEPARATOR SIZING SPREADSHEET INSTRUCTION NOTES
REV:
A
DATE:
February 1999
I.PURPOSE
The aim of the separator sizing spreadsheet is to assist the designer in saving valuable time resources by providing a user-friendly spreadsheet in Excel to calculate sizing parameters for both horizontal and vertical separators.
II.DESIGN BASES
A. Gas residence times are calculated using the normal liquid level as the basis. In the case of the horizontal separator with weirplate partition, the basis used is the height of the weir for the gas volume. Dished end volumes have been neglected for the gas residence time calculations. B. K-values to be used as input data for the spreadsheets are found in the GPSA Handbook(10 thedition), figure 7.9 on page 7-7. The K factors must be converted to m/s to be placed into the spreadsheet. The purpose of the K-factor is for designs which include woven wire demisters. Demisters (mist extractors) can significantly reduce the required diameter of vertical separators. C. Dished-end volume calculations have been included for both vertical and horizontal separators. For the vertical separator, an option is provided for choosing between semi-ellipsoidal and semi-hemispherical ends, however, for all horizontal separators, the ends have been assumed to be semi-ellipsoidal. (Reference: GPSA Handbook section 6 Fig 6.21-6.22) D.
Other standards used in calculations include
SEPARATOR SIZING SPREADSHEET - INSTRUCTION NOTES
Vertical separators are usually selected when the gasliquid ratio is high or total gas volumes are low. Horizontal separators are most efficient where large volumes of total fluids and large amounts of dissolved gas are present with the liquid. For more information on separators please refer to GPSA Handbook, Section 7. B. Step Two: After the separator type is chosen, begin inputting data into the cells of the spreadsheet which have blue italicised text. Do not write in cells which contain red or black text! Input data is summarised in the top left hand side of the spreadsheet. Feed flowrates, properties and nozzle velocity specifications are entered in this section. Data on vessel length, diameter and liquid levels are entered on the vessel sketch. Unknown values need to be assumed, otherwise errors will occur in the results. C. Step Three: When all blue cells are filled - including the dimensions on the sketch, the spreadsheet will calculate all relevant values. The intermediate calculations can be found below the sketch. Final output results are listed on the sketch and in the top s ection of the spreadsheet. All formulae are in red text. D. Step Four: Before final outputs can be used, warnings must be considered. Warnings appear in bold green text, and will appear as "OK" when there is no warning present. If a warning does exist, try to change the relevant parameters to remove or reduce the warnings. These generally relate to liquid levels in the separator and gas residence times.
SEPARATOR SIZING SPREADSHEET - INSTRUCTION NOTES
Another option available is to choose A3 sized paper (page setup menu) to print out your spreadsheet. It is not recommended that the print area be altered as this has been preset. However, if the print area needs to be altered, please use the following procedure. "TOOLS" "OPTIONS" "GENERAL" "MICROSOFT EXCEL 4 MENUS" "OK" (HIGHLIGHT THE AREA THAT YOU WISH TO PRINT) "OPTIONS" "SET PRINT AREA" IV. ADDITIONAL NOTES A.
THE CALCULATION TITLE BLOCK
There is a title block at the bottom of each page of the s preadsheet. Spaces have been provided for entering the calculation title, project number and calculation number. These spaces are accessed by moving the mouse pointer into the particular box and clicking once with the left hand mouse button. At this point, an object box will appear. Simply click inside the box once using the left hand mouse button and enter the data in the normal way. When you have finished typing the information, move the mouse pointer to another part of the spreadsheet and click once with the left hand mouse button. NOTE: While space has been provided on the title block for entering the originators and checkers initials and
SEPARATOR SIZING SPREADSHEET
SEPARATORS •
HORIZONTAL SEPARATOR (3 phase wit h boot)
•
HORIZONTAL SEPARATOR (3 phase, no boot, weirplate partition)
•
HORIZONTAL SEPARATOR (3 phase, no boot, standpipe for condensate.)
•
HORIZONTAL SEPARATOR (2 phase)
•
VERTICAL SEPARATOR (2 phase)
SPREADSHEET APPLICATION Sizing of oil/gas/water separators for the hydrocarbon production industry.
BASIS GPSA Handbook, Volume 1, Section 7. And also Section 6 Fig 6-21,6-22 API RP 521, Section 5.4.2 - Sizing a Knockout Drum
REVISION HISTORY Revision P1 issued in February 1996 - file SEPA RP1.XLS With help from Don Borchert, Rod Harper, Nerrida Scott and Mark Sloma
INSTRUCTIONS FOR USE Spreadsheet Conventions & Format
Input
Data to be entered by the user is shown on the screen in blue italicised type.
Sketch
The vessel sketch appears immediately below the input section. Some input and final output data is shown on this sketch as noted above. Intermediate calculation results such as volumes and fl owrates are also shown on the sketch.
Calculations
This section follows the sketch and includes all the equations and intermediate calculations of the spreadsheet.
Defaults
These include specified residence and settling times. Defaults are the minimum design requirements that are required for comparison aga ns ca cu a ons. Other recommended values for variables or constants such as K, droplet size, rV , maximum nozzle velocities and liquid levels may be found in the KRJB procedure.
Notes
This section includes some important equations and general assumptions used in the spreadsheet.
Nomenclature
Nomenclature used in the spreadsheets including units used, is detailed below the notes section.
Calculation Title Block There is a title block at the bottom of each page of the s preadsheet. Spaces are provided for entering the calculation title, project number and calculation number. These spaces are accessed by moving the mouse pointer into the particular box and clicking once with the left hand mouse button. At this point an object box will appear. Simply click inside the box once using the left hand mouse button and enter the data in the normal manner. When you have finished typing the information, move the mouse pointer to another part of the spreadsheet and click once with the left hand mouse button. Note: While space has been provided on the title block for entering the originators and checkers initials and relevant dates, these spaces cannot be accessed by the user. This is because signatures are required to be hand written by the originator and checker. Printing The print range is pre-set and covers all of the sections described above. Printing is carried out
HORIZONTAL SEPARATOR (3 phase with boot) INPUT
OUTPUT
Feed Flow (t/d) 3 Density (kg/m ) Viscosity (cP) Droplet Size (m)
Oil in Gas
Droplet Size (m) Droplet Size (m)
Oil in Water Water in Oil
GAS
OIL
WATER
2950.0
500.0
50.0
11.1
829.2
972.0
0.02
7.00
0.49
RESIDENCE TIMES Shell
500
r.v max for gas outlet nozzle (kg/m.s )
3750
Max vel. in Oil out nozzle (m/s) Max vel. in water out nozzle (m/s) K Value (m/sec) Mixture density (kg/m )
3.0 3.0
NLL-LLL LLL-LLSD LLSD to Outlet
1000
1500
(mins)
Gas residence time (seconds) HLL-HLSD NLL-HLL
100
r.v max for inlet nozzle (kg/m.s )
Specified
3.0 3.0 3.0
Oil Residence Time at NLL
Actual (mins) 17.7 5.4 5.0 4.4 5.4 3.0
RESIDENCE TIMES
Specified
Actual
1.0
Boot HIL-HILSD NIL-HIL NIL-LIL LIL-LILSD LILSD to bottom Water residence time at NIL
(mins)
(mins) 5.5 3.3 3.3 3.3 4.8 11.4
13.1
OK OK OK OK ** Warning ! Residence time insufficient **
12.8
1.0 0.06
** WARNINGS **
3.0 3.0 3.0 3.0 3.0
** WARNINGS ** OK OK OK OK OK
SETTLING VELOCITY CRITERION Maximum allowable Gas Velocity (m/s) Gas Velocity (m/s) - calculated Oil Droplet Velocity (m/s) - Gravity Settling Method Oil from Gas Water from Oil Oil from Water Droplet fall time (Oil in gas)
NOTE:
0.52 m/s 0.51 m/s OK Water velocity in Boot
0.00 m/sec
0.145 m/s 0.003 m/s 0.038 m/s OK 16.5 secs OK
Gas Velocity Criteria are based on HLSD
TITLE
SEPARATOR SIZING SPREADSHEET
PROJ. CALCULATION SHEET
BY
DATE AND TIME PRINTED:
DATE
CHECKED
9-Apr-14
DATE
SK.CALC.NO
PAGE 1 OF 3
9:15 AM
HORIZONTAL SEPARATOR (3 phase with boot)
SKETCH
Min. Gas Out. nozzle ID 462 mm Length T/T=
Inlet
Gas =
2950.00 t/d 11073.57 Am3/h
9 00 0 m m
GAS
Minimum Inlet nozzle ID 606 mm
I. D. = 3000 mm
HLSD HLL NLL LLL LLSD
Height
Vol. (m3)
600 mm
54.56
500 mm
2.27
400 mm
2.08
300 mm
1.86
150 mm
OIL
2.27 1.24
Interface
Height
(Gas) (HLL-HLSD) (NLL-HLL) (NLL-LLL) (LLL-LLSD) (LLSD-Boot)
Vol.(m3)
Min Oil Outlet nozz ID: 94 mm
1000 ID
Boot Height (mm) 1000 mm
HILSD HIL NIL LIL LILSD
750 mm
0.196
500 mm
0.118
350 mm
0.118
200 mm
0.118
100 mm
0.170
(HIL-HILSD) (NIL-HIL) (NIL-LIL) (LIL-LILSD) (LILSD-Btm)
Oil =
500.00 t/d 3 25.12 m /h
WATER
Min. Water out nozzle ID: 50 mm
50.00 t/d 3 2.14 m /h
Water = NOMENCLATURE
rop e par c e
a me er
m
LLL
Low Liquid Level
HIL
High Interface Level
Dp
LIL LLSD LILSD
Low Interface Level Low Level Shut Down Low Interface Level Shut Down
HLSD HILSD Btm
High Level Shut Down High Interface Level Shut Down Bottom
m Vt
Gas viscosity Cp Settling Velocity m/s
VMAX
Maximum vapour velocity m/s
NLL NIL
Normal Liquid Level Normal Interface Level
X-Area r
Cross sectional area qu ens y g m
K KCR
Design vapour velocity factor m/s Proportionality constant, dimensionless.
HLL
3
rv
High Liquid Level
Vapour density kg/m
TITLE
SEPARATOR SIZING SPREADSHEET PROJ. CALCULATION SHEET BY
DATE
DATE AND TIME PRINTED:
CHECKED
9-Apr-14
DATE
SK.CALC.NO
PAGE 2 OF 3
9:15 AM
HORIZONTAL SEPARATOR (3 phase with boot) CALCULATIONS SETTLING VELOCITIES
Oil in Gas (Gravity Settling Laws method)
Oil From Gas ("K" Value method) K Value (m/s) *Max Allowable Velocity,Vmax Gas Horiz. Velocity
max s e u pper par c e s ze m or eac o e aw s. Kcr is the critical constant for maximum particle size (from GPSA Handbook). Vt is the settling velocity in m/s. see note 1
0.06
0.52 m/s 0.51 m/s
*note 2 Actual Gas Velocity OK
Particle size calc for determination of appropriate law Settling Velocity Settling Law Used
0.15 m/s Intermediate Law
Law Used:
Kcr
Stoke's Law Intermediate Law Newton's Law Oil in Water (Gravity Settling Laws method) Particle size calc for determination of appropriate law Settling Velocity Settling Law Used Law Used: Stoke's Law Intermediate Law Newton's Law
Stoke's Law (Kcr = 0.025) Vt = 1488 g
2 Dp (rl
Intermediate Law (Kcr = 0.334) 0.71
- rv)
1.14 Dp (rl
Vt = 3.54*g
18m
Dp max (m) 47 621 33733
Water in Oil (Gravity Settling Laws method) Particle size calc for determination of appropriate law 0.038 m/s Intermediate Law Vt Dp max (m) (m/s) 0.03 0.158 194 0.33 0.038 2588 18.13 0.072 140464
Kcr
0.03 0.33 18.13
Vt (m/s) 0.28 0.15 0.47
rv
0.29
Settling Velocity Settling Law Used Law Used:
Kcr
Stoke's Law Intermediate Law Newton's Law
0.03 0.33 18.13
0.003 m/s Stoke's Law Vt Dp max (m) (m/s) 0.003 1134 0.006 15153 0.051 822517
Newton's Law (Kcr = 18.13)
0.71
- rv)
Vt = 1.74 * SQRT(g D p (rl-rv) / rv )
0.43
* m
NOTES 1.
Equations for Stokes Law, Intermediate Law and Newtons Law are taken from GPSA Handbook, Volume 1, Section 7. Figure 7.4
2.
Maximum allowable vapour velocity is calculated from the equation in GPSA Handbook, Volume 1, Section 7: VMAX
3.
=
K [ (rl - rv) / rv ]
.
LLSD height calculation is based on the distance between the bottom of the cylinder and the low level shut down for the oil. LILSD height calculation is based on the distance from the base of the boot dished end to the low interface level shut down for the water. th edition)
4.
Information for partial volumes and dished ends was from GPSA handbook (10
Section 6, and in particular, fig.6-21.6-22.
5
Calculations for gas residence time and area/volume calculations use the normal liquid level, NLL as the height basis. End volumes is ignored for gas volume calculations. TITLE
SEPARATOR SIZING SPREADSHEET PROJ.
CALCULATION SHEET BY
DATE AND TIME PRINTED:
DATE
CHECKED
9-Apr-14
9:15 AM
DATE
SK.CALC.NO
PAGE 3 OF 3
HORIZONTAL SEPARATOR (3 phase with weir, no boot) INPUT
OUTPUT
Feed
GAS
OIL
RICH MEG
Flow (t/d) 3 Density (kg/m )
0.240
268.4
2927.6
3.24
836.6
1028.2
Viscosity (cP) Droplet Size (m)
0.01
17.10
0.89
Oil in Gas
150
Droplet Size (m)
Oil in Water
150
Droplet Size (m)
Water in Oil
RESIDENCE TIMES Gas
Specified
Actual
(mins)
(mins)
** WARNINGS **
60.0
4500
seconds
Right Side of Weir 150
r.v max for inlet nozzle (kg/m.s )
7543
r.v max for gas outlet nozzle (kg/m.s )
280
Max vel. in Oil out nozzle (m/s)
1.0
Max vel. in water out nozzle (m/s)
1.0
K Value (m/s) per GPSA fig 7.9 Mixture density (kg/m )
HLL-HLSD
1.0
4.00
OK
NLL-HLL
1.5
4.29
OK
NLL-LLL
2.0
4.24
OK
LLL-LLSD
1.0
4.21
OK
LLSD to Outlet
1.0
4.25
OK
12.70
OK
Oil Residence Time at NLL
5.00
0.12
985.8 RESIDENCE TIMES
Specified
Actual
(mins)
(mins)
** WARNINGS **
Left Side of Weir SETTLING VELOCITY CRITERION Maximum Allowable Gas Velocity (m/s)
1.96 m/s
Gas Velocity (m/s) - calculated
0.00244 m/s
OK
Oil Droplet Velocity (m/s) - Gravity Settling Method
1.0
1.1
OK
NIL-HIL
1.0
1.16
OK
NIL-LIL
2.0
3.60
OK
LIL-LILSD
1.0
4.12
OK
1.5
11.25
OK
Oil from Gas
0.39 m/s
LILSD to Outlet
Water from Oil
0. m/s
Oil Residence Time (NIL to Weir)
19.72
mins
Oil from Water
0.003 m/s
Rich MEG Residence Time (Btm to NIL)
18.97
mins
DROPLET FALL TIMES (Left Side of Weir) Oil in Gas (Top-Liquid) 0.8 secs MEG in Oil (NIL to Weir) 25.5 min Oil in MEG (Btm-NIL) 10.95 min
NOTE:
HIL-Weir
OK ** Warning ! Residence time insufficient! ** OK
Gas Velocity Criteria are based on weir height, Hw. TITLE
LIQUID SEPARATOR
SEPARATOR SIZING SPREADSHEET
PROJ. CALCULATION SHEET
BY
DATE
CHECKED
DATE
CALC.NO 2001 - KGD6 - D1 - PF - B - PRR - 402
SV
DATE AND TIME PRINTED:
RELIANCE'S KGD6 FIELD DEVELOPMENT
9-Apr-14
9:15 AM
PAGE 2 OF 4
HORIZONTAL SEPARATOR (3 phase with weir, no boot) SKETCH
Gas Outlet nozzle ID 50 mm Length T/T =
Gas =
0.24 t/d m 3.09
12000 mm
Inlet Nozzle ID 131 mm Vol. (m )
3.86
(Gas)
2.10
(HIL-Weir)
2.29
(NIL-HIL)
7.12
(NIL-LIL)
8.15 22.24
(LIL-LILSD) (LILSD-Out)
Ht.(mm) 1935.00 Interface 1835 HIL 1735 NIL 1435 LIL 1135 LILSD
GAS Weir Height,Hw = 1945 mm I. D. = 2267 mm OIL
RICH MEG
Vol. (m )
Ht(mm) HLSD HLL NLL LLL LLSD
1845 1545
0.89
1245
0.95
945 645
0.94 0.94 0.95
(HLL-HLSD) (NLL-HLL) (NLL-LLL) (LLL-LLSD) (LLSD-Out)
OIL T/W =
Oil Outlet nozzle ID 69 mm
11000 mm
(If 2 phase set Hw=0, t/w=t/t)
Rich MEG outlet Nozzle ID 205 mm
Oil =
268.36 13.37
t/d m3/h
Rich MEG =
2927.60 118.64
t/d m3/h
TITLE
SEPARATOR SIZING SPREADSHEET
LIQUID SEPARATOR
PROJ. RELIANCE'S KGD6 FIELD DEVELOPMENT CALCULATION SHEET BY
DATE
CHECKED
SV
DATE AND TIME PRINTED:
DATE
CALC.NO 2001 - KGD6 - D1 - PF - B - PRR - 402
9-Apr-14
9:15 AM
PAGE 3 OF 4
HORIZONTAL SEPARATOR (3 phase with weir, no boot) CALCULATIONS Dmax is the upper particle size limit for each of the laws. Kcr is the critical constant for maximum particle size (from GPSA Handbook). Vt is the settling velocity in m/s.
SETTLING VELOCITIES Oil From Gas ("K" Value method) K Value, m/s Max allowable velocity,Vmax Gas Horiz. Velocity
Oil in Gas (Gravity Settling Laws method) Particle size calc for determination of appropriate law
0.12 1.96 m/s 0.00244 m/s
0.39 m/s Intermediate Law
Settling Velocity Settling Law Used Law Used:
Kcr
Vt
Actual Gas Velocity OK Stoke's Law Intermediate Law Newton's Law Oil in Water (Gravity Settling Laws method) Particle size calc for determination of appropriate law
Kcr
Stoke's Law Intermediate Law Newton's Law
0.03 0.33 18.13
Stoke's Law (Kcr = 0.025) Vt = 1488 g Dp ( rl - rv)
m/s
Stoke's Law Vt (m/s) 0.003 0.004 0.03
Settling Velocity Settling Law Used Law Used:
Dp max (m) 259 3463 188003
rv
.
* m
0.000 Kcr
Stoke's Law Intermediate Law Newton's Law
Intermediate Law (Kcr = 0.334) . . . Vt = 3.54*g Dp (rl - rv)
18m
0.33 18.13
0.39 1.07
Dp max (m) 55 740 40150
Water in Oil (Gravity Settling Laws method) Particle size calc for determination of appropriate law
0.003
Settling Velocity Settling Law Used Law Used:
0.03
(m/s) 0.90
Newton's Law (Kcr = 18.13) Vt = 1.74 * SQRT(g Dp ( rl-rv) / rv )
Stoke's Law Vt (m/s) 0.03 0.000 0.33 0.001 18.13 0.032
NOTE:
.
m/s Dp max (m) 1860 24846 1348657
Equations for Stokes Law, Intermediate Law and Newtons Law are taken from GPSA Handbook, Volume 1, Section 7, Figure 7.4
NOMENCLATURE LLL LIL LLSD LILSD
Low Liquid Level Low Interface Level Low Level Shut Down Low Interface Level Shut Down
X-Area rl r
NLL NIL HLL
Normal Liquid Level Normal Interface Level High Liquid Level
m
HIL HLSD HILSD
High Interface Level High Level Shut Down High Interface Level Shut Down
K
Btm
Bottom
Cross sectional area Liquid density kg/m m
p
t MAX
CR w
Gas viscosity Cp Settling Velocity m/s Maximum vapour velocity m/s Design vapour velocity factor m/s Proportionality constant, dimensionless. Height of Weir, mm
TITLE
LIQUID SEPARATOR
SEPARATOR SIZING SPREADSHEET
PROJ.
CALCULATION SHEET DATE
BY
RELIANCE'S KGD6 FIELD DEVELOPMENT
CHECKED
CALC.NO
2001 - KGD6 - D1 - PF - B - PRR - 402
SV
DATE AND TIME PRINTED:
DATE
9-Apr-14
9:15 AM
PAGE 4 OF 4
HORIZONTAL SEPARATOR (3 phase, no boot, draw off pipe for condensate) INPUT
OUTPUT
Feed Flow (t/d) Density (kg/m ) Viscosity (cP) Droplet Size (m) Droplet Size (m) Droplet Size (m)
GAS
OIL
WATER
250.0
1116.2
1000.0
11.1
829.2
972.0
5.00
0.40
0.02
Oil in Gas Oil in Water Water in Oil
RESIDENCE TIMES
(mins)
150 1000 500
r.v max for inlet nozzle (kg/m.s ) r.v max for gas outlet nozzle (kg/m.s )
1500 3750
Max vel. in Oil out nozzle (m/s) Max vel. in water out nozzle (m/s) K Value (m/s) Mixture density (kg/m )
1.0 1.0 0.06
1.0 1.0 1.5 1.0 0.5 1.0 1.0 2.0 1.0 1.0
Actual (mins) 10.44 0.95 0.99 1.00 0.86 0.68 1.3 1.24 1.70 1.40 1.09
** WARNINGS ** seconds ** Warning ! Residence time insufficient ** ** Warning ! Residence time insufficient ** ** Warning ! Residence time insufficient ** ** Warning ! Residence time insufficient ** OK OK OK ** Warning ! Residence time insufficient ** OK OK
95.0 NIL-Standpipe Oil residence time (NLL - NIL) Water residence time (NIL-Bottom)
SETTLING VELOCITY CRITERION
4.1 4.30 4.2
mins mins mins
3.0 2.4 0.2
seconds mins mins
DROPLET FALL TIMES
K Factor Gas Velocity (m/s) Gas Velocity (m/s) - calculated Oil Droplet Velocity (m/s) - Gravity Settling Method Oil from Gas Water from Oil Oil from Water
NOTE:
Specified
Gas HLL-HLSD NLL-HLL NLL-LLL LLL-LLSD LLSD to Withdrawl pipe height HIL-HILSD NIL-HIL NIL-LIL LIL-LILSD LILSD to Outlet
0.52 m/s 0.46 m/s
Oil in Gas Top-Liquid Water from Oil NLL-NIL Oil from Water Btm-NIL
OK
OK OK OK
0.23 m/s 0.004 m/s 0.042 m/s
Gas Velocity Criteria are based on HLSD Height.
STANDPIPE CALCULATIONS - FROM VESSEL BASE
WATER INTERFACE HILSD
INTERMEDIATE CALCULATIONS
700.00
DIST. BETWEEN WATER HILSD AND OIL OUTLET NOZZLE OIL OUTLET NOZZLE (STANDPIPE) ELEVATION, (Hs) DIST. BETWEEN OIL OUTLET NOZZLE AND OIL LLSD OIL LEVEL LLSD
117 817 50.0 867
mm mm mm mm
116.89
1.00
47.11
1.00
40.88
0.6
TITLE
SEPARATOR SIZING SPREADSHEET
PROJ. CALCULATION SHEET
BY
DATE and TIME PRINTED:
DATE
CHECKED
9-Apr-14
DATE
PAGE 1 OF 3
9:15 AM
HORIZONTAL SEPARATOR (3 phase, no boot, draw off pipe for condensate) SKETCH
SK.CALC.NO
Gas = Inlet Length T/T= 4800 mm
Minimum Inlet nozzle ID 304 mm
Minimum Gas Out Nozzle ID = 134 mm
Incremental Ht. (mm) oil HLSD oil HLL oil NLL oil LLL oil LLSD
250.00 t/d 3 938.44 Am /h
GAS
Vol. m3
1250 mm
2.72
1150 mm 1050 mm
0.89
(Gas) (HLL-HLSD)
0.93
(NLL-HLL)
950 mm
0.93
(NLL-LLL)
867 mm
0.80
(LLL-LLSD)
0.48
(LLSD-HILSD)
I. D. = 1750 mm
Height of draw off pipe, Hs =
817 mm
Interface
water water water water water
HILSD HIL NIL LIL LILSD
OIL
700 mm 600 mm
0.91
500 mm
0.89
350 mm
1.21
200 mm
1.00
(NIL-LIL) (LIL-LILSD)
0.78
(LILSD-Outlet)
(HIL-HILSD) (NIL-HIL)
WATER
HEIGHT WARNINGS Minimum Water out nozzle ID = 123 mm OK OK
Water = Minimum Oil Outlet nozzle ID =
141 mm
1000.00 t/d 42.87 m /h
OK OK
Oil = OK OK
1116.20 t/d 56.09 3
NOMENCLATURE ow
qu
eve
g
LIL LLSD LILSD
Low Interface Level Low Level Shut Down Low Interface Level Shut Down
HLSD HILSD
NLL NIL HLL
Normal Liquid Level Normal Interface Level High Liquid Level
Hs rl r
CR
n er ace eve
p
High Level Shut Down High Interface Level Shut Down Proportionality constant, dimensionless.
m
Height of Standpipe, mm Liquid density kg/m
K
t MAX
Gas viscosity Cp Settling Velocity m/s Maximum vapour velocity m/s Design vapour velocity factor m/s
TITLE
SEPARATOR SIZING SPREADSHEET
PROJ.
CALCULATION SHEET
BY
DATE and TIME PRINTED:
DATE
CHECKED
9-Apr-14
9:15 AM
DATE
SK.CALC.NO
PAGE 2 OF 3
HORIZONTAL SEPARATOR (3 phase, no boot, draw off pipe for condensate) CALCULATIONS
Cont'd)
SETTLING VELOCITIES Oil From Gas ("K" Value method)
Oil in Gas (Gravity Settling Laws method) Particle size calc for determination of appropriate law
K Value, m/s Max allowable velocity,Vmax Gas Horiz. Velocity
0.06 0.52 0.46
Dmax is the upper particle size limit for each of the laws. Kcr is the critical constant for maximum particle size (from GPSA Handbook). Vt is the settling velocity in m/s. see note 1
m/s m/s
Settling Velocity Settling Law Used Law Used:
0.23 m/s Intermediate Law
Kcr
Actual Gas Velocity OK Stoke's Law Intermediate La Newton's Law
0.03 0.33 18.13
Vt (m/s) 0.62 0.23 0.57
Dp max (m) 47 621 33733
Oil in Water (Gravity Settling Laws method) Water in Oil (Gravity Settling Laws method)
Particle size calc for determination of appropriate law
Particle size calc for determination of appropriate law
0.042
Settling Velocity Settling Law Used Law Used: Stoke's Law Intermediate Law Newton's Law
m/s
Intermediate Law Vt (m/s) 0.03 0.195
Kcr
0.33 18.13
0.042 0.07
0.004
Settling Velocity Settling Law Used Law Used: Kcr
Dp max (m) 168 2248 122026
Stoke's Law Intermediate La Newton's Law
0.03 0.33 18.13
m/s
Stoke's Law Vt (m/s)
Dp max (m)
0.004 0.006 0.051
906 12108 657243
NOTES
1.
Stoke's Law (Kcr = 0.025)
Intermediate Law (Kcr = 0.334)
Vt = 1488 g Dp ( rl - rv)
Vt = 3.54*g
18m
.
rv
Dp .
.
* m
(rl - rv)
Newton's Law (Kcr = 18.13)
.
Vt = 1.74 * SQRT(g Dp ( rl-rv) / rv )
.
Equations for Stokes Law, Intermediate Law and Newtons Law are taken from GPSA Handbook, Volume 1, Section 7. Figure 7.4 2.
Maximum allowable vapour velocity is calculated from the equation in GPSA Handbook, Volume 1, Section 7: MAX
=
r - r
r
.
3.
Settling times for water and oil are based on the normal interface level (NIL).
4.
Information for partial volumes and dished ends was from GPSA handbook Section 6, and in particular, fig. 6-21,6-22.
5.
Calculations for gas residence time and area/volume calculations use the NLL height as the height basis. End volumes ignored for gas volume calculations. TITLE
PROJ.
CALCULATION SHEET BY
DATE and TIME PRINTED:
DATE
CHECKED
9-Apr-14
9:15 AM
DATE
SK.CALC.NO
PAGE 3 OF 3
CALCULATION FOR SUMP TANK T-2Y40 INPUT
OUTPUT
Feed
GAS
Mixed Liquid
Flow (t/d) 3 Density (kg/m )
42.6
0.1
1.10
853
Viscosity (cP) Droplet Size ( m)
0.01
RESIDENCE TIMES
Actual
Specified
(mins)
(mins)
Gas (seconds)
** WARNINGS **
3
2.39
HLL-HLSD
1.0
4909.8
OK
Oil in Gas r.v max for inlet nozzle (kg/m.s )
300
NLL-HLL
1.0
65.2
OK
6000
NLL-LLL
1.0
5978.0
OK
r.v max for gas outlet nozzle (kg/m.s )
3750
LLL-LLSD
1.0
3446.1
OK
Max vel. in Oil out nozzle (m/s)
1.00
LLSD to bottom
0.5
10914.7
OK
K Value (m/s) 3 Mixture density (kg/m )
0.08
1
SETTLING VELOCITY CRITERION
(m/s)
Maximum allowable Gas Velocity (m/s)
2.27
Gas Horiz. Velocity (m/s) - calculated NOTE:
Gas velocity critera all based on HLSD
OK
1E+00
Oil Droplet Velocity (m/s)
1.16
(Gravity Settling Method) Droplet fall time (seconds)
0.5
OK
CALCULATIONS SETTLING VELOCITIES Oil From Gas ("K" Value method) K Value Max Allowable Velocity, Vmax
0.08 2.27 1.10 501
Gas Horiz. Velocity Minimum Vessel Diameter
Oil from Gas (Gravity Settling Laws method) Particle size calc for determination of appropriate law
Dmax is the upper particle size limit for each of the laws. Kcr is the critical co nstant for maximum particle size (from GPSA Handbook). Vt is the settling velocity in m/s.
m/s m/s m/s mm
Settling Velocity Settling Law Used Law Used:
Stoke's Law (Kcr = 0.025) 2
Vt = 1488 g Dp (rl - rv)
Intermediate Law (Kcr = 0.334) Vt = 3.54*g
0.71
Dp
1.14
(rl - rv)
NOTE:
rv
0.29
Kcr
Vt (m/s)
Newton's Law (Kcr = 18.13)
0.71
Vt = 1.74 * SQRT(g D p (rl-rv) / rv )
Dp max (m)
Stoke's Law
0.03
3.48
82
Intermediate Law
0.33
1.16
1089
18.13
2.63
59113
Newton's Law
18m
1.16 m/s Intermediate Law
0.43
* m
Equations for Stoke's Law, Intermediate Law and Newton's Law are taken from GPSA Handbook, Volume 1, Section 7, Figure 7.4. Results of these calculations will not be used for Sump Tank Sizing.
TITLE
13
27.11.07
APPROVED FOR DESIGN
12
16.03.07
APPROVED FOR DESIGN
AUT
SKP
11
29.09.06
APPROVED FOR DESIGN
SUP
PJ
10
23.08.06
ISSUED FOR COMMENTS
SUP
PJ
CALCULATION FOR SUMP TANK (T-2Y40) PROJ. BONGKOT 3F
Rev.
DATE
DATE AND TIME PRINTED:
DESCRIPTION
9-Apr-14
9:15 AM
BY
CHECK
APPR.
THAI NIPPON STEEL ENGINEERING & CONSTUCTION CO., LTD
DOCUMENT NUMBER THAI-3F-GEN-11-07-0002
PAGE 1 OF 2
CALCULATION FOR SUMP TANK T-2Y40 SKETCH
Inlet Minimum Inlet nozzle ID 88 mm
Minimum Gas Outlet Nozzle ID =
Length T/T= 3050 mm
GAS
Gas = 99 mm
Vol. (m ) 1.24 0.40 0.01 0.5 0.28 0.89
Height HLSD HLL NLL LLL LLSD
I. D. = 1130 mm
42.6 t/d 1612.73 Am /h
650 mm 600 mm 550 mm 425 mm 350 mm
(Gas) (HLL-HLSD) (NLL-HLL) (NLL-LLL) (LLL-LLSD) (LLSD-Btm)
LIQUID
3
Note : Working Condition Volume (LAL-LAH) = 3.8 m
Minimum Mixed Liquid Outlet Nozzle ID =
Mixed Liquid =
0.1 0.00
t/d 3 m /h
50 mm
NOMENCLATURE
13
LLL LLSD NLL HLL
Low Liquid Level Low Level Shut Down Normal Liquid Level High Liquid Level
HLSD Btm rl rv
High Level Shut Down Bottom Liquid density kg/m apour ens ty g m
27.11.07
Dp
Droplet diameter m
m
Gas viscosity Cp Settling Velocity m/s Maximum vapour velocity m/s
t MAX
K CR
g Dmax
Design vapour velocity factor m/s Proportionality constant, dimensionless. Gas constant Upper Particle Size Limit
TITLE
APPROVED FOR DESIGN
12
16.03.07
APPROVED FOR DESIGN
AUT
SKP
11
29.09.06
APPROVED FOR DESIGN
SUP
PJ
ISSUED FOR COMMENTS
SUP
PJ
CALCULATION FOR SUMP TANK (T-2Y40) PROJ. BONGKOT 3F
10 Rev.
23.08.06 DATE
DATE AND TIME PRINTED:
DESCRIPTION 9-Apr-14
9:15 AM
BY
CHECK
APPR.
THAI NIPPON STEEL ENGINEERING & CONSTUCTION CO., LTD
DOCUMENT NUMBER THAI-3F-GEN-11-07-0002
VERTICAL SEPARATOR (2 phase) INPUT
PRODUCTION SEPARATOR
OUTPUT
Feed Flow (t/d) Density (kg/m )
GAS
LIQUID
11401
17.6
57.02
1051.0
0.01
1.796
Viscosity (cP) Droplet Size, (m) Oil in Gas K Value (m/s) from mist extractor data GPSA fig.7.9 r.v max for inlet nozzle (kg/m.s ) r.v max for gas outlet nozzle (kg/m.s )
RESIDENCE TIMES
Actual (mins) 56.8 56.8 56.8 56.8 113.5
Specified (mins)
HLL-HLSD NLL-HLL NLL-LLL LLL-LLSD LLSD to bottom
300 0.10 5000
1.0 1.5 1.5 1.0 1.0
** WARNINGS ** OK OK OK OK OK
3750
Max vel. in Oil outlet nozzle (m/s) Mixture density (kg/m )
SETTLING VELOCITY CRITERION K Factor Gas Velocity (m/s) Gas Velocity (m/s) - calculated Oil Droplet Velocity (m/s)
1.00
57.10
Choose Dished end shape by clicking on arrow. See note 6
0.42 0.35 0.39
OK OK
Gravity Settling Method
CALCULATIONS LIQUID / VAPOUR SEPARATION K Value Method
Dmax is the upper particle size limit for each of the laws. Kcr is the critical constant for maximum particle size (from GPSA Handbook). Vt is the settling velocity in m/s.
(Note 2)
K Value Max allow. Velocity (Vmax) Gas Velocity Minimum Vessel Diameter
0.10 0.42 0.35 2656
m/s m/s m/s mm
Oil from Gas (Gravity Settling Laws method) Particle / droplet size calc for determination of appropriate law Settling Velocity Settling Law Used Law Used:
m/s 0.39 Newton's Law
Kcr
Actual Gas Velocity OK Stoke's Law (Kcr = 0.025) 2
Vt = 1488 g Dp (rl - rv)
Intermediate Law (Kcr = 0.334) 0.71
Vt = 3.54*g
18m
rv
1.14
Dp
0.29
0.71
(rl - rv)
Stoke's Law Intermediate Law Newton's Law
Newton's Law (Kcr = 18.13)
0.03 0.33 18.13
Vt (m/s) 3.69 0.40 0.39
Dp max (m) 22 296 16049
Vt = 1.74 * SQRT(g Dp (rl-rv) / rv )
0.43
* m
TITLE
PRODUCTION SEPARATOR
SEPARATOR SIZING SPREADSHEET
PROJ. CALCULATION SHEET
BY
DATE
CHECKED
DATE
CALC.NO 2001 - KGD6 - D1 - PF - B - PRR - 402
SV
DATE AND TIME PRINTED:
RELIANCE'S KGD6 FIELD DEVELOPMENT
9-Apr-14
9:15 AM
VERTICAL SEPARATOR (2 phase) SKETCH
Min Gas Outlet Nozz. Size =
Calculated Total T/T Height: 4012 mm consider 4000 mm
Gas =
11400.84 8331.02
603 mm
t/d Am /h
300 mm 100 mm
with L/D of approx
Wire Mesh Demister
1.4 ID=2900mm
1740 mm
(Note 4)
1122 mm
(Note 5)
150 mm
(Note 2)
GAS
Inlet Min Inlet Nozzle Size =
561 mm
NOMENCLATURE LLSD LLL
Low Level Shut Down Low Liquid Level
NLL HLL HLSD
Normal Liquid Level High Liquid Level High Level Shut Down
g Dmax rL rV Dp
Gas constant Upper Particle Size Limit qu ens y g m apour ens y g m rop e ame er m
m Vt
Gas viscosity Cp Settling Velocity (m/s) Maximum vapour velocity (m/s)
MAX
K
HLSD HLL
600 mm
NLL
400 mm
0.66 m3
OIL LLL LLSD
0.66 m3
300 mm 200 mm (Note 3) Volume to LLSD including dished end =
Design vapour velocity factor (m/s) Proportionality constant, dimensionless.
CR
Volume increment 0.66 m3
500 mm
Min Liquid Outl et Nozz. Size =
0.66 m3 4.51 m
Oil = 50 mm
17.61 0.70
t/d m
TITLE
PRODUCTION SEPARATOR
SEPARATOR SIZING SPREADSHEET
PROJ. CALCULATION SHEET
BY
DATE
CHECKED
SV
DATE AND TIME PRINTED:
RELIANCE'S KGD6 FIELD DEVELOPMENT DATE
CALC.NO 2001 - KGD6 - D1 - PF - B - PRR - 402
9-Apr-14
9:15 AM
PAGE 3 OF 4
VERTICAL SEPARATOR (2 phase) CALCULATIONS Cont'd
AREA & VOLUME INFORMATION
Area
Cylinder Volume
2
(m ) GAS Cross Sectional Area
6.605
STORAGE (Volume from Bottom) Oil HLSD Oil HLL Oil NLL Oil LLL Oil LLSD
6.605 6.605 6.605 6.605 6.605
3
Volume + Dished 3
Volume Increment 3
(m )
end (m )
(m )
3.963 3.303 2.642 1.982 1.321
7.156 6.495 5.835 5.174 4.514
0.661 0.661 0.661 0.661 1.321
Dished End Type
Dished End Volume (m^3) 3.193 6.385
semi-ellipsoidal hemispherical
3.193
NOTES
1. Maximum allowable vapour velocity is calculated from the equation: VMAX
=
K [ ( rL - rV) / rV ]
0.5
2. 150 mm minimum. 3. Space for instrument nozzles and/or emergency liquid capacity - minimum 150 mm. 4. 60% of vessel diameter or 750mm whichever is greater. 5. twice inlet nozzle diameter. 6 Semi-ellipsoidal end-volume is calculated using the formula V = ( P x (ID) )/24 which applies to one end only of the separator (ie. the bottom). Hemispherical end-volume for one dished end is calculated using the formula: V = (P x (ID) )/12 Information taken from GPSA handbook Sections SI - 6, and in particular, figs. 6.21&6.22
TITLE
PRODUCTION SEPARATOR
SEPARATOR SIZING SPREADSHEET
PROJ. CALCULATION SHEET
BY
DATE
CHECKED
SV
DATE AND TIME PRINTED:
RELIANCE'S KGD6 FIELD DEVELOPMENT
DATE
CALC.NO 2001 - KGD6 - D1 - P F - B - PRR - 402
9-Apr-14
9:15 AM
PAGE 4 OF 4