Separator

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SEPARATOR SIZING SP

VERTICAL SEPARATOR ( 2 PHASE )

HORIZONTAL SEPARATOR( 3 PHASE WITH BOOT)

HORIZONTAL SEPARATOR( 3 PHASE, NO BOOT,

DRAW OFF PIPE FOR CONDENSATE )

MAIN MENU

INSTRUCTIONS

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DSHEET REV: A

DATE: FEBRUARY 1999

FILE SEPARP1.XLS

SPREADSHEET INFORMATION

HORIZONTAL SEPARATOR ( 2 PHASE )

HORIZONTAL SEPARATOR( 3 PHASE, NO BOOT,

WEIRPLATE PARTITION )

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SEPARATOR SIZING SPREADSHEET REV: ADATE: 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 spreadsheetsare found in the GPSA Handbook(10thedition), 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 includeAPI RP 521 Section 5.4.2 and calculations for the

standpipe were from EXXON Criteria in Design Practice 5B

(September 1978).

III.METHOD

The following procedure is a step-by step outline for the

designer.

A. Step One: Choose the type of separator required.

The separators available in this spreadsheet include:

-Horizontal, 3 Phase, with boot

-Horizontal, 3 Phase, no boot, weirplate

partition.-Horizontal, 3 Phase, no boot, standpipe

for condensate.

-Horizontal, 2 Phase

-Vertical, 2 Phase

Page 1 of 3

INSTRUCTION NOTES

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SEPARATOR SIZING SPREADSHEET - INSTRUCTION NOTES

Vertical separators are usually selected when the gas-

liquid 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 section 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.

E. Step Five: Check your units!!! The units defined on thespreadsheets can be found in the nomenclature section.

The notes section may also assist with understanding

which units to use. You can change the values in the

blue cells as many times as you like.

F. Step Six: When you have your final output, SAVE your

file by choosing the "SAVE AS" option under the "FILE"

menu in Excel . Make sure that you use a different file

name to the original master copy. (this will safeguard

against deletion of the master copy)

G. Step Seven: Your work is now ready to PRINT. You may

find that Excel does not have enough memory to display

the spreadsheet fully. The print range has been setup for

A4 landscape paper and will print only the first 2-3 pages ofthe spreadsheet (the rest of the spreadsheet consists of

intermediate calculations). If you find that the spreadsheet

will not fit on the paper, choose "PAGE SETUP" from the

"FILE" menu in Excel and reduce the size of the sheet.

Page 2 of 3

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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 pageof the spreadsheet.

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

relevant dates, these spaces cannot be accessed by theuser. This is because signatures are required to be

hand written by the originator and checker.

B. MAIN MENU

The main menu on the separator sizing spreadsheet

allows the user to access any of the sheets in the

workbook through the use of a macro button. Once the

designer is in a particular worksheet, they can return tothe menu by clicking the "MENU" macro button in

the individual worksheet.

Page 3 of 3

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SEPARATOR SIZING SPREADSHEET

SEPARATORS

HORIZONTAL SEPARATOR (3 phase with 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 6-21,6-22API RP 521, Section 5.4.2 - Sizing a Knockout Drum

REVISION HISTORY

Revision P1 issued in February 1996 - file SEPARP1.XLSWith 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.When printed the input appears in italics only.

Input data is summarised at the top left hand side of the spreadsheet. Feedflowrates, properties and nozzle velocity specifications are entered in this section.Information on vessel length, diameter and liquid levels is entered on the vessel sketchdescribed below.

Output Cells containing formulae are shown in red text.Cells containing formulae have been protected.

Final output data refers specifically to gas, oil and water residence times and oil and waterdroplet settling times. This data is summarised at the top centre of the spreadsheet.Data on calculated nozzle sizes and other vessel specific dimensions are shown on thevessel sketch.

Warnings Warning messages will appear to the right of the output data summary to indicate whenresults fall outside the design criteria described in the KRJB procedure. Where resultssatisfy the design requirements the message 'OK' will appear in the WARNINGS section.

Warning messages may also appear on the vessel sketch, however in this case therewill be no message if the input/output data meets the design requirements.

Messages are shown on the screen in bold green type. When printed, the messagesappear in bold type and will be enclosed in double asterisks.

Date and time printed: 5-Apr-14 9:15 PM Page 1 of 2

Kvaerner RJ Brown Pte Ltd

SEPARATOR SIZING SPREADSHEET - INFORMATION

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Sketch The vessel sketch appears immediately below the input section. Some input and finaloutput data is shown on this sketch as noted above. Intermediate calculation resultssuch as volumes and flowrates are also shown on the sketch.

Calculations This section follows the sketch and includes all the equations and intermediatecalculations of the spreadsheet.

Defaults These include specified residence and settling times.Defaults are the minimum design requirements that are required for comparisonaga 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 thespreadsheet.

Nomenclature Nomenclature used in the spreadsheets including units used, is detailed belowthe notes section.

Calculation Title Block

There is a title block at the bottom of each page of the spreadsheet.Spaces are provided for entering the calculation title, projectnumber and calculation number. These spaces are accessed by moving the mouse pointer into theparticular box and clicking once with the left hand mouse button. At this point an object box willappear. Simply click inside the box once using the left hand mouse button and enter the data in thenormal manner. When you have finished typing the information, move the mouse pointer to another partof 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 checkersinitials and relevant dates, these spaces cannot be accessed by the user. This is becausesignatures 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 outby selecting the 'Print' command from the normal EXCEL pull down menu and selecting 'OK'.

Date and time printed: 5-Apr-14 9:15 PM Page 2 of 2

Kvaerner RJ Brown Pte Ltd

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HORIZONTAL SEPARATOR (3 pha

INPUT OUTPUT

Feed GAS OIL WATER RESIDENCE TIMES Spe

Flow (t/d) 2950.0 500.0 50.0 Shell (min

Density (kg/m3) 11.1 829.2 972.0 Gas residence time (seconds)

Viscosity (cP) 0.02 7.00 0.49 HLL-HLSD

Droplet Size (m) Oil in Gas 100 NLL-HLL

Droplet Size (m) Oil in Water 1000 NLL-LLL

Droplet Size (m) Water in Oil 500 LLL-LLSD

LLSD to Outlet

r.v max for inlet nozzle (kg/m.s ) 1500 Oil Residence Time at NLL

r.v max for gas outlet nozzle (kg/m.s ) 3750

Max vel. in Oil out nozzle (m/s) 1.0 RESIDENCE TIMES Spe

Max vel. in water out nozzle (m/s) 1.0 Boot (min

K Value (m/sec) 0.06 HIL-HILSD

Mixture density (kg/m ) 13.1 NIL-HIL

NIL-LIL

LIL-LILSD

LILSD to bottom

Water residence time at NIL

SETTLING VELOCITY CRITERION

Maximum allowable Gas Velocity (m/s) 0.52 m/s

Gas Velocity (m/s) - calculated 0.51 m/s OK

Oil Droplet Velocity (m/s) - Gravity Settling Method Water velocity in Boot

Oil from Gas 0.145 m/s

Water from Oil 0.003 m/s

Oil from Water 0.038 m/s OK

Droplet fall time (Oil in gas) 16.5 secs OK

NOTE: Gas Velocity Criteria are based on HLSD

DATE AND TIME PRINTED: 5-Apr-14 9:15 PM

HORIZONTAL SEPARATOR (3 phase with

TITLE

CALCULATION SHEET

BY DATE CHECKED DATE


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SKETCH

Length T/T= 9000 mm

Inlet GAS

He

Minimum Inlet nozzle ID I. D. = HLSD 60

606 mm 3000 mm HLL 50

NLL 40

LLL 30

LLSD 15

OIL

Interface Heigh

1000 I

HILSD 750 m

HIL 500 m

1000 mm NIL 350 m

LIL 200 m

LILSD 100 m

WATE

Min. Water out nozzle ID: 50 mm

NOMENCLATURE

LLL Low Liquid Level HIL High Interface Level

LIL Low Interface Level HLSD High Level Shut Down

LLSD Low Level Shut Down HILSD High Interface Level Shut Down

LILSD Low Interface Level Shut Down Btm Bottom

NLL Normal Liquid Level X-Area Cross sectional areaNIL Normal Interface Level r qu ens y g m

HLL High Liquid Level rv Vapour density kg/m3


HORIZONTAL SEPARATOR (3 phase wi

CALCULATIONS

SETTLING VELOCITIES

Boot Height (mm)

TITLE

CALCULATION SHEET



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Oil From Gas ("K" Value method)

K Value (m/s) 0.06*Max Allowable Velocity,Vmax 0.52 m/s

Gas Horiz. Velocity 0.51 m/s

*note 2

Actual Gas Velocity OK

Oil in Water (Gravity Settling Laws method) Wa

Particle size calc for determination of appropriate law Par

Settling Velocity 0.038 m/s Set

Settling Law Used Intermediate Law Set

Law Used: Kcr Vt Dp max Law

(m/s) (m)

Stoke's Law 0.03 0.158 194 Sto

Intermediate Law 0.33 0.038 2588 Inte

Newton's Law 18.13 0.072 140464 New

Stoke's Law(Kcr = 0.025) Intermediate Law(Kcr = 0.334) Newton's Law(Kcr = 18.13)

Vt= 1488 g Dp2(rl - rv) Vt= 3.54*g

0.71Dp

1.14(rl - rv)

0.71Vt= 1.74 * SQRT(g Dp(rl-rv) / rv

18m rv0.29

* m0.43

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 = K [ (rl - rv) / rv ].

3. 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 wat

4. Information for partial volumes and dished ends was from GPSA handbook (10th edition)

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


max s e upper par c e s ze m or eac o e aws.

Kcr is the critical constant for maximum particle size (from GPSA Handbsettling velocity in m/s.see note 1

TITLE

CALCULATION SHEET



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HORIZONTAL SEPARATOR (3 phase with w

INPUT OUTPUT

Feed GAS OIL RICH MEG RESIDENCE TIME

Flow (t/d) 0.014 72.5 2451.0

Density (kg/m3) 3.57 646.3 1049.0 Gas

Viscosity (cP) 0.01 0.27 1.79

Droplet Size (m) Oil in Gas 150 Right Side of Wei

Droplet Size (m) Oil in Water 150 HLL-HLSD

Droplet Size (m) Water in Oil 150 NLL-HLL

NLL-LLL

r.v2max for inlet nozzle (kg/m.s

2) 1500 LLL-LLSD

r.v max for gas outlet nozzle (kg/m.s ) 3750 LLSD to Outlet

Max vel. in Oil out nozzle (m/s) 1.0 Oil Residence Time

Max vel. in water out nozzle (m/s) 1.0K Value (m/s) per GPSA fig 7.9 0.12

Mixture density (kg/m3) 1028.9

RESIDENCE TIME

Left Side of Weir

SETTLING VELOCITY CRITERION HIL-Weir

Maximum Allowable Gas Velocity (m/s) 1.64 m/s OK NIL-HIL

Gas Velocity (m/s) - calculated 0.00006 m/s NIL-LIL

Oil Droplet Velocity (m/s) - Gravity Settling Method LIL-LILSD

Oil from Gas 0.33 m/s LILSD to Outlet

Water from Oil 0.013 m/s Oil Residence Time

Oil from Water 0.003 m/s Rich MEG Residen

DROPLET FALL TIMES (Left Side of Weir)

Oil in Gas (Top-Liquid) 1.7 secs OK

MEG in Oil (NIL to Weir) .8 min OK

Oil in MEG (Btm-NIL) 6.51 min OK

NOTE: Gas Velocity Criteria are based on weir height, Hw.


TITLE

CALCULATION SHEET



SV

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HORIZONTAL SEPARATOR (3 phase with weir, n

SKETCH

Length T/T = 6600 mm

Inlet Nozzle ID173 mm

Vol. (m ) Ht.(mm)

4.16 (Gas) Interface Weir Height,Hw

2.07 (HIL-Weir) 1500 HIL I. D. =

5.50 (NIL-HIL) 1075 NIL 2200 mm O

5.24 (NIL-LIL) 650 LIL

2.73 (LIL-LILSD) 400 LILSD 2.64 (LILSD-Out) RICH M

T/W = 5600 mm

(If 2 phase set Hw=0, t/w=t/t)


TITLE

BY


CALCULATION SHEET

DATE CHECKED DATE

SV

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HORIZONTAL SEPARATOR (3 phase with w

CALCULATIONS

SETTLING VELOCITIES


K Value, m/s 0.12

Max allowable velocity,Vmax 1.64 m/s



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

Settling Velocity 0.003 m/s Settling Velocity

Settling Law Used Stoke's Law Settling Law Used Inter

Law Used: Kcr Vt Dp max Law Used: Kcr

(m/s) (m)

Stoke's Law 0.03 0.003 352 Stoke's Law 0.03

Intermediate Law 0.33 0.006 4702 Intermediate Law 0.33

Newton's Law 18.13 0.05 255242 Newton's Law 18.13


Vt = 1488 g Dp (rl - rv) Vt = 3.54*g.

Dp.

(rl - rv).

Vt = 1.74 * SQRT(g Dp (rl-rv) / rv ) N

18m rv.

* m.

NOMENCLATURE

LLL Low Liquid Level X-Area Cross sectional are

LIL Low Interface Level rl Liquid density kg/m

ow eve u own r

LILSD Low Interface Level Shut Down p m

NLL Normal Liquid Level m Gas viscosity CpNIL Normal Interface Level t Settling Velocity m

HLL High Liquid Level MAX Maximum vapour v

HIL High Interface Level K Design vapour veloHLSD High Level Shut Down CR Proportionality cons

g n er ace eve u own w e g o e r, mm

Btm Bottom


Dmax is the upper particle size limit for each of the laws.Kcr is the critical constant for maximum particle size (from GPSAHandbook). Vt is the settling velocity in m/s.

TITLE

CALCULATION SHEET

BYDATE CHECKED DATE


SV

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HORIZONTAL SEPARATOR (3 phase,

INPUT

Feed GAS OIL WATER

Flow (t/d) 250.0 1116.2 1000.0

Density (kg/m ) 11.1 829.2 972.0

Viscosity (cP) 0.02 5.00 0.40

Droplet Size (m) Oil in Gas 150

Droplet Size (m) Oil in Water 1000

Droplet Size (m) Water in Oil 500

r.v max for inlet nozzle (kg/m.s ) 1500


Max vel. in Oil out nozzle (m/s) 1.0

Max vel. in water out nozzle (m/s) 1.0K Value (m/s) 0.06

Mixture density (kg/m ) 95.0

SETTLING VELOCITY CRITERION

K Factor Gas Velocity (m/s) 0.52 m/s OK

Gas Velocity (m/s) - calculated 0.46 m/s

Oil Droplet Velocity (m/s) - Gravity Settling Method

Oil from Gas 0.23 m/s

Water from Oil 0.004 m/s

Oil from Water 0.042 m/s

NOTE: Gas Velocity Criteria are based on HLSD Height.

STANDPIPE CALCULATIONS - FROM VESSEL BASE INTERMEDIATE CALCUL

WATER INTERFACE HILSD 700.00

DIST. BETWEEN WATER HILSD AND OIL OUTLET NOZZLE 117 mm 116.89 1.0

OIL OUTLET NOZZLE (STANDPIPE) ELEVATION, (Hs) 817 mm

DIST. BETWEEN OIL OUTLET NOZZLE AND OIL LLSD 50.0 mm 47.11 1.0OIL LEVEL LLSD 867 mm

CALCULATION SHEET



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Inlet

Minimum Inlet nozzle ID 304 mm Length T

Incremental

Ht. (mm) Vol. m3

oil HLSD 1250 mm 2.72 (Gas)

oil HLL 1150 mm 0.89 (HLL-HLSD) oil NLL 1050 mm 0.93 (NLL-HLL)

oil LLL 950 mm 0.93 (NLL-LLL)

oil LLSD 867 mm 0.80 (LLL-LLSD)

0.48 (LLSD-HILSD)

Interface

water HILSD 700 mm

water HIL 600 mm 0.91 (HIL-HILSD)

water NIL 500 mm 0.89 (NIL-HIL)

water LIL 350 mm 1.21 (NIL-LIL)

water LILSD 200 mm 1.00 (LIL-LILSD)

0.78 (LILSD-Outlet)

HEIGHT WARNINGS

OK

OK

OK

OK

OK

OK

NOMENCLATURE

ow qu eve g n er acLIL Low Interface Level HLSD High Level SLLSD Low Level Shut Down HILSD High Interfac

LILSD Low Interface Level Shut Down CR Proportiona

NLL Normal Liquid Level Hs Height of St

NIL Normal Interface Level rl Liquid densi

HLL High Liquid Level r

DATE and TIME PRINTED: 5-Apr-14 9:15 PM

CALCULATION SHEET



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DATE and TIME PRINTED: 5 Apr 14 9:15 PM

HORIZONTAL SEPARATOR (3 phase, no bo

CALCULATIONS Cont'd)

SETTLING VELOCITIES


K Value, m/s 0.06

Max allowable velocity,Vmax 0.52 m/s



Oil in Water (Gravity Settling Laws method)

Particle size calc for determination of appropriate law

Settling Velocity 0.042 m/s

Settling Law Used Intermediate Law

Law Used: Kcr Vt Dp max

(m/s) (m)

Stoke's Law 0.03 0.195 168

Intermediate Law 0.33 0.042 2248

Newton's Law 18.13 0.07 122026

NOTES

1. Stoke's Law(Kcr = 0.025) Intermediate Law(Kcr = 0.334) Newton's Law(Kcr = 18.

Vt = 1488 g Dp (rl - rv) Vt = 3.54*g.

Dp.

(rl - rv).

Vt = 1.74 * SQRT(g Dp (r

18m rv.

* m.

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

DATE and TIME PRINTED: 5-Apr-14 9:15 PM

Dmax is the upper particle size limit for each of the laws.Kcr is the critical constant for maximum particle size (from GHandbook). Vt is the settling velocity in m/s.see note 1

CALCULATION SHEET


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CALCULATION FOR SUMP TANK

INPUT OUTPUT

Feed GAS Mixed Liquid RESIDENCE TIMES

Flow (t/d) 42.6 0.1

Density (kg/m3) 1.10 853 Gas (seconds)

Viscosity (cP) 0.01 2.39 HLL-HLSD

Droplet Size (m) Oil in Gas 300 NLL-HLL

r.v max for inlet nozzle (kg/m.s ) 6000 NLL-LLL

r.v max for gas outlet nozzle (kg/m.s ) 3750 LLL-LLSD

Max vel. in Oil out nozzle (m/s) 1.00 LLSD to bottom

K Value (m/s) 0.08

Mixture density (kg/m3) 1 SETTLING VELOCITY CRITERION

Maximum allowable Gas Velocity (m

Gas Horiz. Velocity (m/s) - calculate

NOTE: Gas velocity critera all based on HLSD Oil Droplet Velocity (m/s)

(Gravity Settling Method)

Droplet fall time (seconds)

CALCULATIONS

SETTLING VELOCITIES


K Value 0.08 m/s

Max Allowable Velocity,Vmax 2.27 m/s


Minimum Vessel Diameter 501 mm


Vt = 1488 g Dp2(rl - rv) Vt = 3.54*g

0.71Dp

1.14(rl - rv)

0.71Vt = 1.74 * SQRT(g Dp(rl-rv) / rv)

18m rv0.29

* m0.43

NOTE: 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.

EN


Dmax is the upper particle size limit for each of the laws.Kcr is the critical constant for maximum particle size (from GPSA HVt is the settling velocity in m/s.

TITLE

DATERev. BY CHECK APPR.

10

12

23.08.06

DESCRIPTION

ISSUED FOR COMMENTS

11 29.09.06 APPROVED FOR DESIGN

SUP PJ

APPROVED FOR DESIGN

SUP PJ

16.03.07 AUT SKP


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CALCULATION FOR SUMP TANK T-2

SKETCH

Inlet Minimu

Gas O

Minimum Inlet nozzle ID Length T/T= 3050 mm Nozzle

88 mm

GAS Heigh

HLSD 650 mm

I. D. = HLL 600 mm

1130 mm NLL 550 mm

LLL 425 mm

LLSD 350 mm

LIQUID

Note : Working Condition Volume (LAL-LAH) = 3.8 m3

Minimu

Mixed

Nozzle

NOMENCLATURE

LLL Low Liquid Level

LLSD Low Level Shut DownNLL Normal Liquid Level

HLL High Liquid Level

HLSD High Level Shut Down Btm Bottom

rl Liquid density kg/mrv apour ens ty g m

ENGINE


DATERev. BY CHECK APPR.

10 23.08.06

DESCRIPTION

TITLE

ISSUED FOR COMMENTS


SUP PJ


SUP PJ


SKPAUT

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INPUT PRODUCTION SEPARATOR OUTPUT

Feed GAS LIQUID RESIDENCE TIMES

Flow (t/d) 11401 17.6

Density (kg/m ) 57.02 1051.0 HLL-HLSD

Viscosity (cP) 0.01 1.796 NLL-HLL

Droplet Size, (m) Oil in Gas 300 NLL-LLL

K Value (m/s) from mist extractor data GPSA fig.7.9 0.10 LLL-LLSD

r.v max for inlet nozzle (kg/m.s ) 5000 LLSD to bottom


Max vel. in Oil outlet nozzle (m/s) 1.00 SETTLING VELOCITY CRITERION

Mixture density (kg/m ) 57.10 K Factor Gas Velocity (m/s)

Choose Dished end shape by clicking on arrow. Gas Velocity (m/s) - calculated

See note 6 Oil Droplet Velocity (m/s)Gravity Settling Method

CALCULATIONS

LIQUID / VAPOUR SEPARATION

K Value Method Oil from

(Note 2) Particle

K Value 0.10 m/s

Max allow. Velocity (Vmax) 0.42 m/s Settling

Gas Velocity 0.35 m/s Settling

Minimum Vessel Diameter 2656 mm

Law UsActual Gas Velocity OK

Stoke's Stoke's Law(Kcr = 0.025) Intermediate Law(Kcr = 0.334) Newton's Law(Kcr = 18.13) Interme

Newton

Vt = 1488 g Dp2(rl - rv) Vt = 3.54*g

0.71Dp

1.14(rl - rv)

0.71Vt = 1.74 * SQRT(g Dp (rl-rv) / rv )

18m rv0.29

* m0.43


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CALCULATION SHEET



Dmax is the upper particle size limit for each of thelaws.Kcr is the critical constant for maximum particle size(from GPSA Handbook).Vt is the settling velocity in m/s.

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VERTICAL SEPARATOR (2 p

SKETCH

Min Gas Outlet

Nozz. Size =

Calculated Total 300 mm

T/T Height: 4012 mm

consider 4000 mm with L/D of approx 100 mm

1.4ID=2900mm

1740 mm (Note 4)

Inlet GAS

1122 mm (Note 5)

Min Inlet Nozzle Size = 561 mm

150 mm (Note 2)

HLSD 600 mm Vo

NOMENCLATURE HLL 500 mm

LLSD Low Level Shut Down

LLL Low Liquid Level

NLL Normal Liquid Level NLL 400 mm

HLL High Liquid Level

HLSD High Level Shut Down OILg Gas constant

Dmax Upper Particle Size Limit LLL 300 mmrL qu ens y g m LLSD 200 mm (Note 3)

rV apour ens y g m Volume to LLSD including dished end =

Dp rop e ame er m

m Gas viscosity Cp Vt Settling Velocity (m/s)

MAX Maximum vapour velocity (m/s)

K Design vapour velocity factor (m/s) Min Liquid Outlet

CR Proportionality constant, dimensionless. Nozz. Size =


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CALCULATIONS Cont'd

AREA & VOLUME INFORMATION Area Cylinder Volume + Volume

Volume Dished Increment

(m2) (m

3) end (m

3) (m

3)

GAS Cross Sectional Area 6.605

STORAGE (Volume from Bottom)

Oil HLSD 6.605 3.963 7.156 0.661

Oil HLL 6.605 3.303 6.495 0.661

Oil NLL 6.605 2.642 5.835 0.661

Oil LLL 6.605 1.982 5.174 0.661

Oil LLSD 6.605 1.321 4.514 1.321

3.193

NOTES

1. Maximum allowable vapour velocity is calculated from the equation:

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. t

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


VMAX = K [ (rL- rV) / rV ]0.5

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