unison solutions, inc. biogas quality and conditioning...gas quality limits to need treatment...
TRANSCRIPT
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Unison Solutions, Inc. Biogas Quality and Conditioning
CHP Operators Workshop
November 6, 2014
University of Iowa
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Unison Solutions, Inc. Overview
Company founded on January 1, 2000
Located in Dubuque, Iowa
40 Employees (10 Engineers)
45,000 sq. ft. Manufacturing Facility
205 systems sold worldwide, 170+ in Operation
Biogas Conditioning System Design and Fabrication
Custom System Design and Fabrication
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Unison Solutions, Inc. Overview
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Biogas Conditioning Systems
What is driving the need for increased gas treatment on biogas fueled generation and
direct use projects?
Equipment Damage & Performance Issues
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Getting Started on a
Biogas to Energy Project
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System Design Checklist
Site Conditions
Inlet Gas Conditions (gas testing)
Discharge Gas Conditions
End-use Technology
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Gas Quality Limits To Need Treatment
Equipment H2S Siloxanes
MicroTurbine <5,000 ppmv <100 ppbv
IC Engine <100 - 500 ppmv <100 - 1,000 ppbv
Boiler <100 - 500 ppmv <500 - 2,000 ppbv
Vehicle Fuel Non-Detect <100 ppbv
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Digester or Landfill Hydrogen Sulfide Removal Gas Compression/ Moisture Removal
Siloxane/VOC Removal
MicroTurbines IC Engines Boilers
Hydrogen Sulfide Removal Systems
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Hydrogen Sulfide Removal Systems Why Hydrogen Sulfide Removal?
Equipment Damage from Corrosion (Hydrosulfuric Acid)
SOx Emissions
Health and Safety Issues (1000ppm will cause an individual to
lose consciousness)
Odor Control
Causes fouling of Siloxane Removal Media
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Hydrogen Sulfide Removal Systems Technologies
SulfaTreat Systems
Iron Sponge Systems
Biological/Iron Sponge Systems
Biological Systems
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Hydrogen Sulfide Removal Systems SulfaTreat/Iron Sponge Process
Biogas containing Hydrogen sulfide (H2S)
Media: Sulfatreat or Iron Sponge
Water to Drain Biogas free of
Hydrogen Sulfide (H2S)
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Hydrogen Sulfide Removal Systems Biological/Iron Sponge Systems
Features
Hydrated iron oxide on a wood shavings and chips carrier.
Water is re-circulated through the system.
Oxygen is injected into the system.
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Hydrogen Sulfide Removal Systems Biological Systems
Typically used on applications with high H2S levels
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Digester or Landfill Hydrogen Sulfide Removal Gas Compression/ Moisture Removal
Siloxane/VOC Removal
MicroTurbines IC Engines Boilers
Gas Blower and Compressor Systems Skid Mounted Equipment
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Gas Blower Systems Generation Supported
Internal Combustion Engines Caterpillar
GE Jenbacher
GE Waukesha
Cummins
MWM
Liebherr
MAN
Tech 3
Direct Use Boiler
Fuel Cells
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Gas Blower Systems Major Components
Gas Blower Inlet
Moisture/
Particulate Filter
Rotary Lobe Positive
Displacement Blower
Multistage
Centrifugal Blower
Forced Air To Gas
Heat Exchanger
(Optional)
Dual Core
Heat Exchanger
Glycol Chiller
OR
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Gas Blower Systems Skid Mounted Equipment
Rotary Lobe Positive Displacement Blower System
Multistage Centrifugal Blower System
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Gas Compressor Systems Generation Supported
Turbines Capstone
Solar
Direct Use Boiler
Direct Use Pipeline
Fuel Cells
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Gas Compressor Systems Major Components
Gas Compressor Inlet Moisture/
Particulate Filter
Oil Flooded Twin
Screw Compressor
Gas To Gas
Heat Exchanger
Glycol Chiller
Pre-Cooler
Oil/Gas
Separator
Gas To Glycol
Heat Exchanger
Moisture
Separator
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Gas Compressor Systems Skid Mounted Equipment
Oil Flooded Twin Screw Compressor System
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Digester or Landfill Hydrogen Sulfide Removal Gas Compression/ Moisture Removal
Siloxane/VOC Removal
MicroTurbines IC Engines Boilers
Siloxane Removal Systems
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Siloxane Removal Systems What Are Siloxanes?
What is a Siloxane?
Silica and organic compounds are combined
(Organosilicon)
Used in many consumer and *industrial products (Listed as Silicones
as the ingredient on products)
Shampoo * Dry Cleaning Solutions
Conditioner * Windshield Cleaning Products
Deodorant * RTV Silicone Cleaner
Siloxanes break down in landfills and digesters, and combine with the methane gas
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Siloxane Removal Systems Siloxane Impact on Engines
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Biogas with siloxanes and other VOC’s
Carbon Media Through
adsorption organics are
attracted to the surface and pores
of the carbon media
Biogas free of
siloxanes
Siloxane Removal Systems Siloxane and VOC Removal
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Biogas with siloxanes - H2S has
been removed
Carbon Media - Type is determined based on
siloxane levels
Biogas - ready for use
Siloxane Removal Systems Siloxane and VOC Removal
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Box with Limited
Quantity Label
Metal Can, Lid and Sealing
Ring
Flexible Tubing
Hose Barb
Fitting
Tedlar Bag with
Valve Chain of Custody
Gas Testing/Sampling Sampling and Shipping Supplies
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Budgetary Biogas System Costs
50scfm Systems
Low Pressure Ranges From: $200,000 to $325,000
High Pressure Ranges From: $230,000 to $340,000
100scfm Systems
Low Pressure Ranges From: $230,000 to $400,000
High Pressure Ranges From: $240,000 to $380,000
300scfm Systems
Low Pressure Ranges From: $270,000 to $580,000
High Pressure Ranges From: $310,000 to $600,000
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Digester or Landfill BioCNG™ Gas Conditioning
System CNG Vehicle
Fueling Station CNG Vehicles
MicroTurbines IC Engines Boilers
Addition of Proprietary CO2 Removal System
Potential Energy Produced
Vehicle Fuel
Electricity
Heat
BioCNG™ Vehicle Fueling System Process Flow Diagram