Dakota Gasification Company Dakota Gasification Company.

DakotaGasificationCompany

DakotaGasificationCompany

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Dakota Gasification Company’sGreat Plains Synfuels Plant

Dakota Gasification Company’sGreat Plains Synfuels Plant

Concept started in early 1970s

Plant built by a consortium of five pipeline companies

Construction began in 1981

Synthetic Natural Gas (SNG) production began in 1984

Concept started in early 1970s

Plant built by a consortium of five pipeline companies

Construction began in 1981

Synthetic Natural Gas (SNG) production began in 1984

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A new owner….DGC A new owner….DGC

A technological marvel but not a financial success…

Original Owners DefaultThe original investors defaulted on August 1, 1985, about one year after first gas was put in the pipeline, due to the very low price of natural gas.

DOE Operation PeriodThe DOE operated the plant from 1985 until 1988

Sold to Basin Electric Power CooperativeBasin Electric purchased the plant from the DOE & formed DGC, a wholly owned subsidiary to operate the facility.

A technological marvel but not a financial success…

Original Owners DefaultThe original investors defaulted on August 1, 1985, about one year after first gas was put in the pipeline, due to the very low price of natural gas.

DOE Operation PeriodThe DOE operated the plant from 1985 until 1988

Sold to Basin Electric Power CooperativeBasin Electric purchased the plant from the DOE & formed DGC, a wholly owned subsidiary to operate the facility.

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DGC’s Great Plains Synfuels Plant A Unique Facility

DGC’s Great Plains Synfuels Plant A Unique Facility

Only commercial coal gasification facility producing synthetic natural gas

Coproducts sales of anhydrous ammonia, liquid nitrogen, & sulfur

Diversification of products began in 1989 with initial $25 million for capital projects for phenol/cresylic acid & xenon/krypton

Installation of flue gas desulfurization project to produce DakSul45 in 1996

1100 ton/day Anhydrous Ammonia Plant completed in 1997

Carbon Dioxide (CO2) Pipeline for Enhanced Oil Recovery (EOR) in 2000

Only commercial coal gasification facility producing synthetic natural gas

Coproducts sales of anhydrous ammonia, liquid nitrogen, & sulfur

Diversification of products began in 1989 with initial $25 million for capital projects for phenol/cresylic acid & xenon/krypton

Installation of flue gas desulfurization project to produce DakSul45 in 1996

1100 ton/day Anhydrous Ammonia Plant completed in 1997

Carbon Dioxide (CO2) Pipeline for Enhanced Oil Recovery (EOR) in 2000

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MIXED GAS CONDENSEDPROCESS

WATER TOWATER

TREATMENT BOILERFEED

WATER

WASTE HEATRECOVERY

HIGH PRESSURESTEAM TO PLANTSTEAM SYSTEM

CO2COMPRESSION

STEA MTO PLAN T

STEA MSY STE M

C OW AS TE

G AS

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BO ILERFE ED

W ATER

FGD SCRUBBER

WATER TOCOOLING TOWER

TAR OIL

OXYGENPLANT

RAW GAS

SYNTHESIS GAS

COOLEDRAW GAS

NAPHTHA

OXYGENGRAVITY

SEPARATION

CONDENSEDPROCESS

WATER

RAWGAS

LIQUOR

KRYPTON/XENON

LIQUIDNITROGEN

BYPRODUCTPURIFICATION

PHENOL

AMMONIUMSULFATE

CRESYLIC ACID

STACK

AMMONIA

Great Plains Synfuels Plant Process FlowGreat Plains Synfuels Plant Process Flow

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Committed to Health, Safety & the EnvironmentCommitted to Health, Safety & the Environment

Environmentally Compliant

Enhanced Plant Efficiencies

Adopted ACC’s Responsible Care

Policy 2007

Environmentally Compliant

Enhanced Plant Efficiencies

Adopted ACC’s Responsible Care

Policy 2007

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The Environment The Environment

Ambient air is monitored continuously at four sites for SO2 & NOX

Groundwater is monitored at more than 100 wells

Reduced CO2 emissions by 49% since 2000 thru carbon capture and sequestration activities

Ammonium Sulfate – an environmentally friendly product

BNSF Railway 2009 Product Stewardship Award

Surrounding communities outreach

Reverse 911 system

Ambient air is monitored continuously at four sites for SO2 & NOX

Groundwater is monitored at more than 100 wells

Reduced CO2 emissions by 49% since 2000 thru carbon capture and sequestration activities

Ammonium Sulfate – an environmentally friendly product

BNSF Railway 2009 Product Stewardship Award

Surrounding communities outreach

Reverse 911 system

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CoproductsCoproducts

PhenolsPhenols

NaphthaNaphtha

Liquid NitrogenLiquid Nitrogen Krypton/XenonKrypton/Xenon

Carbon DioxideCarbon Dioxide

AmmoniumSulfate

AmmoniumSulfate

Natural GasNatural Gas

Cresylic AcidCresylic Acid

AnhydrousAmmonia

AnhydrousAmmonia

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Weyburn and Midale, Saskatchewan 19 Million Tons Sequestered To DateWeyburn and Midale, Saskatchewan 19 Million Tons Sequestered To Date

CO2 PIPELINECO2 PIPELINE

240 mmscf/dPipeline capacity

Current flow rate:153 mmscf/d

Compressors

CO2CO2

DGC and CO2DGC and CO2

World’s Largest Carbon Captureand Sequestration ProjectWorld’s Largest Carbon Captureand Sequestration Project

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205 miles

Featured on the History Channel’s “ModernMarvels”

14” & 12” carbon steelpipe

Strategically routed throughWilliston Basin oil fields

Pipeline take offs alreadyinstalled

DGC’s CO2 PipelineDGC’s CO2 Pipeline

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Xenon/Krypton Gases Xenon/Krypton Gases

Capacity to produce 3.1 million liters annually

Used high-intensity halogen lighting, lasers &thermal pane windows

Krypton: 89%

Xenon: 7.7%

O2/Argon: 3.3%

Capacity to produce 3.1 million liters annually

Used high-intensity halogen lighting, lasers &thermal pane windows

Krypton: 89%

Xenon: 7.7%

O2/Argon: 3.3%

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Liquid NitrogenLiquid Nitrogen

Capacity to produce 24 million gallons annually

Used for food processing refrigeration, as an oil well additive and in artificialinsemination, chemical processes, &medical procedures

Product specification 99.99%

Capacity to produce 24 million gallons annually

Used for food processing refrigeration, as an oil well additive and in artificialinsemination, chemical processes, &medical procedures

Product specification 99.99%

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PhenolPhenol

Capacity to produce 33 million lbs annually

Fleet of 34 railcars

Used in:Plywood/OSB/InsulationCountertops/Overlays/Exterior SidingDVDs/CDsAutomotive PartsCaprolactum-Nylon 6Circuit BoardsPharmaceuticals

Purity: >99.9%

Capacity to produce 33 million lbs annually


Used in:Plywood/OSB/InsulationCountertops/Overlays/Exterior SidingDVDs/CDsAutomotive PartsCaprolactum-Nylon 6Circuit BoardsPharmaceuticals

Purity: >99.9%

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Cresylic AcidCresylic Acid

Mixture of cresols & xylenols

Capacity of 33 million pounds annually

Used in:Pesticides/InsecticidesAntioxidants/Vitamin EWire enamel coatingsDyes/SolventsPyrethroidsAutomotive PartsSemiconductor materialsElectronic chipsAlkylphenolsResins

Fleet of 48 Railcars

Useful Cresylics >94%

Mixture of cresols & xylenols

Capacity of 33 million pounds annually

Used in:Pesticides/InsecticidesAntioxidants/Vitamin EWire enamel coatingsDyes/SolventsPyrethroidsAutomotive PartsSemiconductor materialsElectronic chipsAlkylphenolsResins

Fleet of 48 Railcars

Useful Cresylics >94%

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NaphthaNaphtha

Capacity of 7 million gallons annually


Used as a gasoline blend stock, in making paint thinner & other solvents & feedstock for benzene, toluene, & xylenes

Capacity of 7 million gallons annually


Used as a gasoline blend stock, in making paint thinner & other solvents & feedstock for benzene, toluene, & xylenes

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Anhydrous AmmoniaAnhydrous Ammonia

Capacity to produce 400,000 tons annually


Truck loading facility

Fertilizer for farming & as chemical feedstock




Fertilizer for farming & as chemical feedstock

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Ammonium SulfateAmmonium Sulfate

Created to utilize the sulfur oxide removed from the plant boiler steam in order to be compliant with the Clean Air Act of 1990

DGC’s flue gas desulfurization unit is removing 93% of the sulfur


On site storage for 40,000 tons



Ammonia: 21% as N

Sulfur: 24% as S

Created to utilize the sulfur oxide removed from the plant boiler steam in order to be compliant with the Clean Air Act of 1990

DGC’s flue gas desulfurization unit is removing 93% of the sulfur


On site storage for 40,000 tons



Ammonia: 21% as N

Sulfur: 24% as S

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Great Plains Synfuels Plant TodayGreat Plains Synfuels Plant Today

Work Force: more than 700 people

Coal Usage: ≈ 18,000 tons daily

Daily Production Capacity: 170 mmscfd SNG,along with many coproducts

Annual Plant Loading Factor: 90-92%

Reduced CO2 emissions by 49%since 2000

Work Force: more than 700 people

Coal Usage: ≈ 18,000 tons daily

Daily Production Capacity: 170 mmscfd SNG,along with many coproducts

Annual Plant Loading Factor: 90-92%

Reduced CO2 emissions by 49%since 2000

Dakota Gasification Company Dakota Gasification Company.

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