process schematics 1

PROCESS SCHEMATICS 1

CO2 Recovery & O2 Onsite Production &Steam SupplyCO Combustion PSA-CO2 VPSA (O2) Natural Gas Feeding

CO2

Flue Gas CombustionChamber

CO

GOX

Air Filter Compressor

Recycle Stream 1

Dryer Submicron Filter

Recycle Stream 2

S-removal

Cooling Water

BufferMix

off-gas

waste heatboiler

soft waterpre.heater

coolingtower

CompressorProduct

CompressorProduct

1400 °C 150 °C

circulatingwater 30°C

soft water

steam12,3 TPH

VSA

coolingwater tower

Natural Gas

only 70% available

Steam Supplyto the customer

LCO2

CO2 iquifier

CO2PSA

CO2 Recovery& O2 Onsite Production &Steam SupplyCO Combustion LPR- CO2 VPSA (O2) Natural Gas Feeding

CO2


CO

GOX


Recycle Stream 1

Recycle Stream 2

waste heatboiler


coolingtower

CompressorProduct

CompressorProduct

1400 °C 150 °C

circulatingwater 30°C

soft water

steam12,3 TPH

VSA

coolingwater tower

Natural Gas

only 70% available

Steam Supplyto the customer

LCO2

CO2 iquifier

Liquid PressureRinsing (Rectisol)

Liquid PressureRinsing (Selexol)

off-gas

waste VSA-gas

molesieve dryer

CO2 Recovery & O2 Onsite Production & Power SupplyCO Combustion PSA-CO2 VPSA (O2) Natural Gas Feeding

CO2


CO

GOX


Recycle Stream 1


Recycle Stream 2

S-removal

Cooling Water

BufferMix

off-gas

waste heatboiler


coolingtower

CompressorProduct

CompressorProduct

CO2PSA

1400 °C 150 °C

circulatingwater 30°Csoft water

steam12,3 TPH

Power Turbine6 MW

power tothe customer

power

VSA

coolingwater tower

power

Natural Gas

only 70% available

LCO2

CO2 iquifier

CO2 Recovery (PSA +CO Combustion) & O2 Onsite Production & Power Supply & Membrane N2

CO2


CO

GOX


Recycle Stream 1


Recycle Stream 2

S-removal

Cooling Water

BufferMix

off-gas

waste heatboiler


coolingtower

CompressorProduct

CompressorProduct

CO2PSA

1400 °C 150 °C


steam12,3 TPH

Power Turbine6 MW

power tothe customer

power

VSA

coolingwater tower

power

Natural Gas

only 70% available

GAN

air

air

LCO2

CO2 iquifier

CO2 Recovery & O2 Onsite Production & H2 ElectrolyserCO Combustion PSA-CO2 VPSA (O2) Natural Gas Feeding Auto-Power Producer

CO2


CO

GOX


Recycle Stream 1


Recycle Stream 2

S-removal

Cooling Water

BufferMix

off-gas

waste heatboiler


coolingtower

CompressorProduct

CompressorProduct

CO2PSA

1400 °C 150 °C


steam12,3 TPH

Power Turbine

water

electrolyser

6 MW

power

power

VSA

coolingwater tower

power

GOX

H2

Natural Gas

only 70% available

LCO2

CO2 iquifier

CO2 Recovery & O2 Onsite Production & H2 ElectrolyserCO Combustion PSA-CO2 VPSA (O2) Auto-Power Producer

CO2


CO

GOX


Recycle Stream 1


Recycle Stream 2

S-removal

Cooling Water

BufferMix

off-gas

waste heatboiler


coolingtower

CompressorProduct

CompressorProduct

CO2PSA

1400 °C 150 °C


steam12,3 TPH

Power Turbine

water

electrolyser

6 MW

power

power

VSA

coolingwater tower

power

GOX

H2

LCO2

CO2 iquifier

CO2 Recovery & O2 Onsite Production CO-LPG/Sasol-oil Combustion LPR-CO2 VPSA (O2)

CO2

Flue GasCO


Recycle Stream 1

Recycle Stream 2

chillertower

Compressor

Product

GOX

CompressorProduct

VSA

coolingwater tower

LPG - Sasol Oil

only 70% available

LCO2

CO2 iquifier

CombustionChamber

CO850 °C

Dryer

Scrubber

off gas

30 °C

coolingwater

filterStripper

steam

MDEA

CO2 Recovery & O2 Onsite Production LPG/Sasol-oil Combustion LPR-CO2 VPSA (O2)

CO2

CO


Recycle Stream 1

Recycle Stream 2

chillertower

Compressor

Product

GOX

CompressorProduct

VSA

coolingwater tower

LPG - Sasol Oil

LCO2

CO2 iquifier

CombustionChamber

CO850 °C

Dryer

Scrubber

off gas

30 °C

coolingwater

filterStripper

steam

MDEA

CO2 Recovery & O2 Onsite Production CO-LPG/Sasol-oil Combustion LPR-CO2 VPSA (O2) power generation H2 production

CO2

Flue GasCO


Recycle Stream 1

Recycle Stream 2

coolingtower

Compressor

Product

GOX

CompressorProduct

VSA

coolingwater tower

LPG - Sasol Oil

only 70% available

LCO2

CO2 iquifier

CombustionChamber

CO850 °C

Dryer

Scrubber

off gas

30 °C

coolingwater

filterStripper

steam

MDEA

waste heatboiler


150 °C

soft water

steam10 TPH

Power Turbine

H2electrolyser

power

CO2 Recovery & O2 Onsite Production CO-LPG/Sasol-oil Combustion LPR-CO2 VPSA (O2) power generation H2 production

CO2

Flue GasCO


Recycle Stream 1

Recycle Stream 2

coolingtower

Compressor

Product

GOX

CompressorProduct

VSA

coolingwater tower

LPG - Sasol Oil

only 70% available

LCO2

CO2 iquifier

CombustionChamber

CO850 °C

Dryer

Scrubber

off gas

30 °C

coolingwater

filterStripper

steam

MDEA

waste heatboiler


150 °C

soft water

steam10 TPH

Power Turbine

electrolyser

powerpower to

JV

Burner off-gas

CO2 Recovery & O2 Onsite Production LPG/Sasol-oil Combustion LPR-CO2 VPSA (O2) power generation H2 production

CO2

CO


Recycle Stream 1

Recycle Stream 2

coolingtower

Compressor

Product

GOX

CompressorProduct

VSA

coolingwater tower

LPG - Sasol Oil

LCO2

CO2 iquifier

CombustionChamber

CO850 °C

Dryer

Scrubber

off gas

30 °C

coolingwater

filterStripper

steam

MDEA

waste heatboiler


150 °C

soft water

steam10 TPH

Power Turbine

H2electrolyser

power

power

Burner off-gas

CO2 Recovery & O2 Onsite Production CO-LPG/Sasol-oil Combustion without R1/R2 LPR-CO2 VPSA (O2)

CO2

Flue GasCO


chillertower

Compressor

Product

GOX

CompressorProduct

VSA

coolingwater tower

LPG - Sasol Oil

only 70% available

LCO2

CO2 iquifier

CombustionChamber

CO850 °C

Dryer

Scrubber

off gas

30 °C

coolingwater

filterStripper

steam

MDEA

CO2 Recovery & O2 Onsite Production CO-LPG/Sasol-oil Combustion without R1/R2 LPR-CO2 VPSA (O2) power generation H2

production

CO2

Flue GasCO


coolingtower

Compressor

Product

GOX

CompressorProduct

VSA

coolingwater tower

LPG - Sasol Oil

only 70% available

LCO2

CO2 iquifier

CombustionChamber

CO850 °C

Dryer

Scrubber

off gas

30 °C

coolingwater

filterStripper

steam

MDEA

waste heatboiler


150 °C

soft water

steam10 TPH

Power Turbine

H2electrolyser

power

PROCESS SCHEMATICS 2

Air

CoolingWater Supply

CoolingWater

GAN

GOX

Regeneration Gas Vent

Cold Box

LOX

LIN

Crude

Arcompander

Main Heat Exchanger

Rectification Column

CrudeArgonColumn

RegenerationGas Heater

Compressor

Air Separation Principle

molecularsieve

adsorber

Subcooler

Raw Argon

molecularsieve

adsorber

coolingwaterreturn

Air

Compressor

Air Compressor

Filtered air is compressed by a centrifugal compressor in an oil free system.

CoolingWater Supply

Chiller

Provides a further stream of cooling water, chilled by waste gas and nitrogen, for use in the direct cooler.

Molecular Sieve Adsorbers

Removes water and carbon dioxide from the air in dual vessels on alternate duty. Regeneration gas cleans the off-stream vessel.

RegenerationGas Heater

Regeneration Gas Heater

Heats regeneration gas to required temperature.

Air Separation Process Description

CoolingWater

Direct Contact After Cooler

Cools and washes air by direct contact with cooling water.

Air Separation Process Description

Main Heat Exchanger

Main Heat Exchanger

Cools the purified air close to its liquification point against outgoing gaseous oxygen and nitrogen product streams and waste nitrogen. Cooled air passes to the high pressure column and the expansion turbine.

companderCompander

Meets process refrigeration requirements by expanding part of the cold compressed air.

low pressureupper column

high pressurelower column

High and Low Pressure Columns

Initial separation of the air into an enriched oxygen liquid at thesumpof the high pressure column and nitrogen at the top. The low pressure column provides the separation into high purity oxygen , nitrogen product, waste nitrogen, and raw argon feed.

Subcooler

Subcooler

Subcools enriched oxygen liquid and liquid nitrogen to provide column reflux. Liquid nitrogen is also removed downstream of the subcooler as product.

CrudeArgonColumn

Crude Argon Column

Raw argon feed from the low pressure column feeds to the argon column for additional rectification to produce crude argon.

CrudeArgonColumn

High PurityArgonColumn

Heat Exchanger

Crude Argon

LAR

Raw Argon

off - gas

Hydrogen

Compressor

Pre-condensor

DeoxoProcess

Cooler

MainCondensor

Dryer

LIN

Argon Recovery DEOXO Process

Crude -LOX

GAN

Argon Recovery DEOXO Process Description

CrudeArgonColumn

Raw Argon

Heat Exchanger

DeoxoProcess

MainCondensor

High PurityArgonColumn

•Crude Argon Column

Separation of the O2/Ar merge extracted from the LP column into a sump product with a low argon content, returned to the LP column and a crude argon at the top.

• Heat Exchanger

The crude argon is heated up in the heat exchanger to ambient temperature.

• DEOXO Process

The oxygen contained in the crude argon is separated in a deoxo by catalytic combustion with hydrogen.

• Water Main Condensor

The water produced is removed partly by condensing and completely by the molecular adsorbers.

• High Purity Argon Column

The oxygen free crude argon is separated into a nitrogen rich residual gas and LAR in the high purity argon column.

CrudeArgon

Argon Recovery Process Direct Rectification

Argon Condenser

Crude ArgonColumn

High PurityArgon Column

LAR

off-gas

99% Ar1% N2

Raw Argon

Crude Argon

LIN

GAN or AirGAN or Air

packings

packings

GANcr.-GOX

cr.-LOX

vent

Argon Recovery Process DescriptionDirect Rectification

Crude ArgonColumn

99% Ar1% N2

• Crude Argon Column

Raw argon gas from the low pressure column is used as feed gas for the crude argon column.In the crude argon column the oxygen is removed by means of cryogenic rectification.

Argon Condenser

•Argon Condenser

Reflux for the crude argon column is provided by condensing the main part of the O2 free crude argon against the rich liquid from the pressure column in the top condenser.

High PurityArgon Column

• High Purity Argon Column

Part of the oxygen free crude argonis withdrawn subcooled and fed to the pure argon column.Nitrogen in the pure argon column is removed by cryogenic rectification.Liquid argon from the sump is transferred to the liquid storage tank.

AirHeater

LIN

Filter Compressor

Condenser

LiquidStorage Vessel

Main Heat Exchanger

Vaporizer

GAN

Adsorber

Cooler

Rectification ColumnFront End Back - up System

off gas

Standard N2 - Generator Process

LIN

ExpansionTurbine

AirHeater

LIN

Filter Compressor

Condenser

LiquidStorage Vessel

Main Heat Exchanger

Vaporizer

GAN

Adsorber

Cooler

Rectification Column Back - up System

off gas

LIN Assist N2 - Generator Process

LIN

LOX

GOX

Main Heat Exchanger

ProductCompressor

MolecularSieve

Adsorber

Heater

Direct ContactAfter Cooler

Cooling Water


Front End Rectification Back - up System

Evaporator

Subcooler

LOX

O2 - Generator Process 1)

1) without booster

Chiller

Liquid StorageVessel

LOX

GOX

Main Heat Exchanger

ProductCompressor

molecularsieve

adsorber

Heater

Chiller

Direct ContactAfter Cooler

Cooling Water


Front End Rectification Back - up System

Evaporator

Subcooler

LOX

O2 - Generator Process 2)

2) with booster

Booster

Oxygen / Nitrogen GeneratorsProcess Description

Air Compressor

Filtered air is compressed by a centrifugal compressor in an oil-free system.

Direct Contact After Cooler

Cools and washes air by direct contact with cooling water.

molecularsieve

adsorberMolecular Sieve Adsorbers

Removes water and carbon dioxide from the air in dual vessels on alternate duty. Regeneration gas cleans the off-stream vessel.

Air Booster Compressor

Provides a stream of purified air at sufficiently high pressure to vaporize pressurized liquid oxygen

Main Heat Exchanger

Main Heat Exchanger

Cools the purified air to appr. its liquification point against outgoing gaseous oxygen and nitrogen streams. Cooled air passes to the high pressure column and the expansion turbine.

Expansion Turbine

Meets process refrigeration requirements by expanding part of the cold compressed air.

Oxygen / Nitrogen GeneratorsProcess Description

Nitrogen1 column

rectification

High and Low Pressure üColumns

Initial separation of the air into an oxygen-rich liquid at the sump of the high pressure column and nitrogen at the top.

Thelow pressure column provides the separation into oxygen and nitrogen products.

Subcooler

Subcoolers

Subcools oxygen-rich liquid and liquid nitrogen to provide column reflux.

Liquid Storage Tanks

optional due to tailor made concepts

LOX

LIN

Oxygen2 columns

rectification

low pressure

highpressure

process schematics 1

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