industrial applications of clathrate hydrates
TRANSCRIPT
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INDUSTRIAL APPLICATIONS OF CLATHRATE HYDRATES
A BRIDGE TO COMMERCIALGAS HYDRATE PRODUCTION
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CLATHRATE HYDRATES . . . FARADAY’S OTHER CAGE
First named and characterized by Michael Faraday in 1823. He first encountered clathrates during his fundamental work on chlorine. It remained a laboratory curiosity for more than 100 years
Gas field operators in the 1930’s experienced hydrate blockages in pipelines during winter. Additives like methanol were developed to solve the problem making it a gas field and laboratory curiosity.
Natural methane hydrates were first observed by Soviet geologists in Siberian permafrost during exploratory drilling in 1960’s. Geologists have since shown that natural hydrates dwarf traditional fossil fuel reserves.
STILL MYSTERIOUS= OPPORTUNITY
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Phase Change Can Be Controlled By Both Temperature and
Pressure
Thermodynamic Reversibility
High Latent Heat and Higher Formation Temperature than Ice
WHAT MAKES CLATHRATE HYDRATES SPECIAL?
Ability to Separate Gases and Purify Water
Isothermal Compression
Both areModerate
Thermal EnergyStorage
What Else Can Do All of This?
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WHY HASN’T THIS BEEN DONE BEFORE?
LNG Worked for Largest Gas Fields
Classic Valley of Death Scenario
Wrong Model Applied to the
Right Technology
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Discovery by Rudy Rogers research group at MSU that surfactants enable
rapid hydrate formation in an unstirred reactor in 1997
THE BEGINNING OFMY HYDRATE JOURNEY
NETL funded 1000 liter demonstration reactor that was run
only 6 times.
Shortcuts were made and poor heat transfer prevented demonstration
living up to its potential
HEAT TRANSFER IS THE CRITICAL FACTOR
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Displacement 10,000 Tons
Number of Tanks 124
Gas Storage 31,000 MMbtu
Potential Power ~3700 MWh
OUR SOLUTION
Tank Volume 50,000 liters
Storage Capacity 250 MMBtu
Formation Energy ~1800kWh
Potential Power ~30MWh
INCREASE FLEXIBILITY &REDUCE FIXED CAPEX
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THE GAS SUPPLY CHAIN REPRESENTS THE LARGEST AND MOST EXPENSIVEENGINEERING PROJECTS ON EARTH
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HOW DOES GAS GET TO MARKET TODAY?
COMPRESS
LIQUIFY
Pipelines
Land Based
Floating
Geographically and politically constrained.
Expense limits applications to only the largest gas fields.
Cost of $5.00-7.00/Mmbtu and $7-15 Billion CAPEX
HOW WILL HYDRATES GET TO MARKET?
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THE ENERGY SUPPLY CHAIN EXPLAINSWHY OIL IS WORTH MORE THAN GAS
Transport Unload/Store
Distribute& Store CustomerEnergy
Resource
Oil is the Benchmark Because It Is a Liquid
Low CAPEX Storage & High Energy Density Make
It Worth $20/mmbtu
Gases are Much More Challenging
High CAPEX Storage and Volatility Make It Feasible
For Only the Largest Fields and Customers
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DEMAND FOR LNG HAS TRIPLED CAPEX OVER THE LAST DECADE
LOW HANGING FRUIT HAS BEEN PICKED
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Safe
Scalable
Efficient
Selective
Simple
HYDRATES OFFER AN UNCONVENTIONAL ALTERNATIVE
Hydrates store simple gases in a three dimensional water crystal cage network similar to ice. Upon crystallization 150 cubic feet of gas can be stored in 1 cubic foot of water.
Hydrates are inherently safe. Like ice, hydrates require significant amounts of energy to dissociate and will not release gas fast enough to trigger an explosion
Hydrate formation requires only pressure and chilling. Standardized modules can be scaled to applications ranging from thousands to billions of cubic feet. Modules can be reallocated
Hydrates represent natures way of storing gases. The hydrate formation process isothermally compresses natural gas to the equivalent of 150 bar using only water at near ambient conditions.
As the hydrate crystal grows it excludes virtually everything from the lattice, including dissolved salts. Process parameters can be further tuned to selectively separate hydrate forming gases.
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Displacement 10,000 Tons
Number of Tanks 124
Gas Storage 31,000 MMbtu
Potential Power ~3700 MWh
HYDRASTOR MODULAR PLATFORM
Tank Volume 50,000 liters
Storage Capacity 250 MMBtu
Formation Energy ~1800kWh
Potential Power ~30MWh
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Exploration and drilling Liquefaction Shipping
Regas-sification
Pipeline Delivery
Total Cost to Power Plant
Industrial User
Exploration and drilling
Total Cost to Power Plant or Industrial User
Barge or Ship Based Hydrastor Platform Delivered Directly to Dockside or Floating Power Plant
$3.00-4.00 $1.00-1.40 $.80-1.50 $.75-$1.00
SIMPLICITY OF HYDRATESTRANSFORMS SHIPPING COSTS
LNG Supply Chain 500 Nautical Miles
HDX Supply Chain 500 Nautical Miles
$5.55-8.00
$2.50-4.00
$2.50-4.00
SIMPLICITY OF HYDRATESTRANSFORMS SHIPPING COSTS
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650MW
6,000MW250MW
840MW
1600MW
1100MW
10,000MW OF FUEL OIL READY FOR LOW COST US GAS
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DELIVERED COST COMPARISONOF HYDRATES VS LNG
ALASKA?
Cuba250 Miles
Haiti750 Miles
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ALASKA NATURAL GAS?
WHAT WILL SEA ROUTES LOOK LIKE IN 2035?
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GAS FLARING
THIS IS FOR 2017 . . .SITUATION IS CLEARLY GETTING WORSE
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US JUST PASSED NIGERIA IN TERMS OF GAS FLARING
RAIL ACCESSIBLE
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GAS STORAGE IS CHANGING
HOURLY DEMAND VS SEASONAL
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THE NATURAL GAS UNDERBELLY
GAS PIPELINES ARE AMERICA’S ACHILLES HEEL
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ALISO CANYON
THE HEART OF SOUTHERN CALIFORNIA’S GAS SYSTEM
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REAL CONSEQUENCES
AND NO READILY AVAILABLE SOLUTION
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REAL CONSEQUENCES
TOTAL COST >$45 MILLION IN 4 DAYS
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HYDRATE LINEPACK?
HYDRATES CAN BALANCE PRESSURE WITH MINIMAL INTERVENTION
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HOW TO USE MULTIPLE ATTRIBUTES OF GAS HYDRATES
GAS + THERMAL ENERGY STORAGE
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THE PROBLEM WITH BIOGAS
BASELOAD AND ONLY HALF THE ENERGY CONTENT OF NG
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THE VALUE OF RENEWABLE NATURAL GAS
LCFS VALUES RNG @ >$30/MMBTU
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GAS SEPARATION
LCFS VALUES RNG @ >$30/MMBTU
● H2S/CO2
● CH4/CO2
● Ethane/Ethylene
● H2/CO2
● CO2/N2
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DESALINATION
CAN BE COMBINED WITH GAS AND THERMAL ENERGY STORAGE
● PRODUCED WATER
● BORON
● SEAWATER
● BACTERIA
● VIRUSES?
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THERMAL ENERGY STORAGE
Cheapest form of energy storage
Formation Temperatures Higher than Ice is a Big Deal
Higher Latent Heat than Ice and Faster
Formation
Can Be Combined with Desalination or Storage
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THE ORIGINAL VISION
OFFSHORE STRANDED GAS TO FLOATING OXYFUEL PLANTWITH INTEGRATED GAS SEPARATION AND TRANSPORT