Abu Dhabi Gas Development Company Ltd.

AL HOSN GAS –

SHAH GAS

DEVELOPMENT

PROJECT

Abu Dhabi Gas Development Company Ltd. Page 2

THE COMPANY : AL HOSN GAS

• Shah Gas Development (SGD) Project:

– located 180km south-west of Abu Dhabi city

– near the Liwa Crescent in the emirate

– approximately 70km X 10km in area

– 60% - ADNOC & 40% - Oxy

Abu Dhabi Gas Development Company Ltd. Page 3

Well fluid – Sour Gas /

Condensate / Water

Slug Catcher Separation & Stabilization

Units

Acid Gas Removal Units

Gas Dehydration & NGL Recovery

Units

Hydrotreating Units

Sulphur Recovery Units

Condensate Storage Tanks

Liquid Sulphur Storage Tanks

Utilities Units

Sulphur Granulation

Plant

NGL Spheres

Flare

Sales Gas to Pilot Gas

Sales Gas

Sales Gas to Sulphur Station

NGL

CO2 Gas

Solid Sulphur

Condensate

Water from Well Fluid

Abu Dhabi Gas Development Company Ltd. Page 4

SHAH GAS PLANT

Abu Dhabi Gas Development Company Ltd.

SULPHUR RECOVERY

& TAIL GAS TREATING

UNIT

Abu Dhabi Gas Development Company Ltd. Page 6

SULPHUR RECOVERY & TAIL GAS TREATING

• SRU and TGT Unit consists of 4 x 25% identical parallel Units (0751-

0754) designed for a nominal Sulphur processing capacity of 2500

TPD per Train (10,000 TPD total)

• Objective is to reduce Atmospheric Sulphur Emissions and to produce

a Saleable Elemental Sulphur Product.

• Feed Acid Gas is from the following sources:

– Solvent regeneration Units (DGA Regeneration Units-0731-0734)

– Selexol Units (NGL Recovery Units 0741/0742)

Abu Dhabi Gas Development Company Ltd. Page 7

SULPHUR RECOVERY & TAIL GAS TREATING

SRU Design Features: • Fluor licensed two-stage Claus plant with hydrogenation/ amine tail gas

treating – BTX destruction – Dual thermal stages in each train – Reaction water used for boiler feed water make-up – Incinerator HRSGs to maximise energy efficiency

• ExxonMobil’s FLEXSORB® SE Plus used in the TGTU section – More cost effective than formulated MDEA

• Goar, Allison & Associates D’GAASS technology for sulphur degassing • Total Acid Gas Flow (one unit) – 199 Tons/hr with H2S – 62.5 mole.% • Sulphur Recovery - 99.9%+ • SO2 in Stack Gas - < 500 mg/m3

Abu Dhabi Gas Development Company Ltd. Page 8

SULPHUR RECOVERY & TAIL GAS TREATING

BFW

BFW

Acid Gas from Unit- 0731/0732/0733/0734

Acid Gas to Unit- 0752/0753/0754

Acid Gas KOD

Acid Gas Pre-heater

Air Pre-heater 751-E-102

Combustion Air Blowers 0751-B-101A/B/C

MP Fuel Gas

MP Fuel Gas

MB

MB RF

RF NO 1 WHB

NO 2 WHB

NO 1 Steam Drum

NO 2 Steam Drum

Chemical injection

Chemical injection

Process Gas to No.1 1st Condensor

Process Gas to No.1 2nd Condensor

Abu Dhabi Gas Development Company Ltd. Page 9

SULPHUR RECOVERY & TAIL GAS TREATING

Atm. Air

NO 1 Converter

NO 2 Converter NO 1

First Condenser

NO 2 First Condenser

Second Condenser

Third Condenser

Degassing Contactor

Sulphur Rundown Vessel

DeGassing Vent to Incinerator

Dry air

Tail Gas to TGTU Process Gas from No.1 WHB

Process Gas from No.2 WHB

DeGassed Sulphur to Storage Tanks

Abu Dhabi Gas Development Company Ltd. Page 10

SULPHUR RECOVERY & TAIL GAS TREATING

Tail Gas Heater

Reactor Effluent Cooler

Hydrogenation Reactor

Incinerator Heat Recovery System Generator Package

Lean Flexorb from tank

Propane Chiller

M

Propane

Propane

Rich Flexsorb for Regeneration

Tail Gas Trim Heater

Incinerator Air Blower

Tail Gas from 3rd Condenser

Abu Dhabi Gas Development Company Ltd. Page 11

SULPHUR RECOVERY & TAIL GAS TREATING

SULPHUR PRODUCT SPECIFICATIONS

Purity of Liquid Sulphur Product 99.9%

Sulphur Product Appearance (As a Solid) Bright Yellow

Sulphur Product Carbon Content ≤ 500 ppmw

Sulphur Product Acidity (As H2SO4) ≤ 50 ppmw

Sulphur Product H2S Content ≤ 10 ppmw

Sulphur Product Moisture Content ≤ 500 ppmw