NGL SHIPPING ENERGY OPTIMIZATION - GCC Chapter · NGL SHIPPING ENERGY OPTIMIZATION By ALSADAT...

NGL SHIPPINGENERGY OPTIMIZATION

ByALSADAT ALGHAMDIBERRI GAS PLANT

ENGINEERING DIVISION

November 30, 2011© Copyright 2011, Saudi Aramco. All rights reserved.

OutlinesOutlines

NGL Shipping Process Overview

Inherent System Drawbacks

Proposed Solutions

Financial Analysis

Required Modifications

Summary

Comparison of Current & New Changes

Objectives

ObjectivesObjectives

Eliminating inherent system drawbacks associated with the existing NGL shipping process

Enhancing reliability

Eliminating inherent system drawbacks associated with the existing NGL shipping process

Enhancing reliability

Reducing energy loss

Accruing financial gains

Reducing energy loss

Accruing financial gains

1/10

OutlinesOutlines



Proposed Solutions

Financial Analysis


Summary


Objectives

Process Components

•5 NGL Columns

•7 Electrical Driven Pumps

•2 NGL Surge TanksPump (2)

Pump (6)Pump (7)

FCV-1

Pump (3)

LCV-1

110 psi

NGL Surge Tanks (Qty 2)

Pipeline300 psi

ZV-1PCV-1

Pump (1)

Pump (4&5)

ZV-2

ZV-3

Existing NGL Shipping Process

400 psi Fractionator

50 MBD

200 psiHC Cond. Stripper (# 1)

25 MBD


75 MBD

De-Ethanizer(Qty 2)360 psi

80 MBD

400 hp400 hp200 hp200 hp

3,500 hp3,500 hp

Total4,100 hp

Total4,100 hp

2/10

OutlinesOutlines


Proposed Solutions

Financial Analysis


Summary


Objectives


Inherent System DrawbacksInherent System Drawbacks

Vibration & Noise on LCV-1; High Diff. (P)Vibration & Noise on LCV-1; High Diff. (P)

Noise at Shipping Pump Area (Pump 7)

Possibility of Pipeline pressure exceeding the max. allowable pressure of 450 psi

(Pump 7 max. discharge pressure is 1000 psi)

Noise at Shipping Pump Area (Pump 7)

Possibility of Pipeline pressure exceeding the max. allowable pressure of 450 psi

(Pump 7 max. discharge pressure is 1000 psi)

Wasting (2,628 hp)1.93 MW Wasting (2,628 hp)1.93 MW Wasting (2,628 hp)1.93 MW

3/10

OutlinesOutlines


Financial Analysis


Summary


Objectives


Proposed Solutions

xx

10”

10”

Proposed Solutions

Pump (2)

Pump (6)Pump (7)

FCV-1

Pump (1)

LCV-1

NGL Surge Tanks

Pipeline300 psi

ZV-1PCV-1

Pump (1)


50 MBD

200 psiHC Cond. Stripper (1)

25 MBD

200 psiHC Cond. Stripper (2)

75 MBD

De-Ethanaizer(s)360 psi

80 MBD

110 psig

Pump (4&5)

ZV-2

ZV-3

772 hp772 hp

400 hp400 hp

300 hp300 hpTotal

1,472 hpTotal

1,472 hp

MOV-2

MOV-1

Saving2,628 hp

5/10

OutlinesOutlines


Financial Analysis

Summary


Objectives


Proposed Solutions


NGL Surge Tanks

North

East

Pipeline300 psi

LCV-

1

Required Modifications (1)Required Modifications (1)

HC Cond. Stripper (2)

HC Cond. Stripper (1)

Fractionator

MOV-2

MOV-1

6/10

HC Cond. Stripper (1)&

Fractionator

HC Cond. Stripper (1)&

Fractionator

HC Cond. Stripper (2)HC Cond. Stripper (2)

NGL TanksNGL Tanks

PipelinePipeline

PCV‐1

ZV‐1

Current Configuration

Required Modification

10”

6”

10”

6”

10”

MOV‐2

10”

11 feet

8”

8”

10”MOV‐110”

8 feet

West

North

Required Modifications (2)Required Modifications (2)

200 psi

7/10

OutlinesOutlines


Summary


Objectives


Proposed Solutions


Financial Analysis

Financial Analysis

The Breakeven at 2The Breakeven at 2ndnd MonthMonth

8/10

Modification Cost ($)Modification Cost ($)

Revenue ($)Revenue ($)= = 17%17%

1 2 3 1 2 3 4 5 4 5

YearYear

Net

Cas

h Fl

ow ($

)N

et C

ash

Flow

($)

OutlinesOutlines


Summary

Objectives


Proposed Solutions


Financial Analysis


Comparison of Current & New ChangesComparison of Current & New Changes

EXIST NEWDESCRIPTION

Vibration & Noise on LCV-1 Yes NoVibration & Noise on LCV-1 Yes No

Keeping Pipeline Pressure < 450 psi No YesKeeping Pipeline Pressure < 450 psi No Yes

Energy Saving (Revenue) No YesEnergy Saving (Revenue) No Yes

Required Modifications No YesRequired Modifications No Yes

Pump (6/7) Life-Time Increment No YesPump (6/7) Life-Time Increment No Yes

9/10

OutlinesOutlines


Objectives


Proposed Solutions


Financial Analysis


Summary

SummarySummary

Vibration & Noise on LCV-1 were the trigger factors of this initiative.

System inherited these problems due to the expansion of the NGL producer and overlooking existing system sizing and hydrolysis.

This proposal will eliminate the vibration, noise and save $.Reliability of NGL shipping pump will be improved.

Vibration & Noise on LCV-1 were the trigger factors of this initiative.

System inherited these problems due to the expansion of the NGL producer and overlooking existing system sizing and hydrolysis.

This proposal will eliminate the vibration, noise and save $.Reliability of NGL shipping pump will be improved.

10/10

QuestionsQuestions

ALSADAT ALALSADAT AL--GHAMDIGHAMDIEmail: Email: [email protected]@aramco.com

Nov 30, 2011Nov 30, 2011

8/10

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Pump (2)

Pump (6)Pump (7)

FCV-1

Pump (3)

LCV-1

NGL Surge Tanks (Qty 2)

Pipeline300 psi

ZV-1PCV-1

Pump (1)

Pump (4&5)

ZV-2

ZV-3

LCV-1 (High Differential Pressure)

4/10


50 MBD


25 MBD


75 MBD

De-Ethanaizer(Qty 2)360 psi

80 MBD

In SummerIn Summer

500psig

165psig

• Diff. Pressure = 335 psig• Valve Output very low 20% (small area)• Flow Velocity (39 m/s) = Erosion Velocity

110 psig 165 psig

NGL SHIPPING ENERGY OPTIMIZATION - GCC Chapter · NGL SHIPPING ENERGY OPTIMIZATION By ALSADAT...

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