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Air Liquide Biogas Membranes
October 27, 2016
2 Air Liquide All-Membrane Solution for Gas Processing
Air Liquide US Biogaz Reference List
Project/Location Start-up
Raw Feed
(MMSCFD) Sales Gas Destination
Laurel Highlands (Raeger Mtn, PA) Jul-06 4 Dominion pipeline system
Iris Glen (Johnson City, TN) Nov-06 2 Mountain Home VA Center co-gen facility
Greentree (Kersey, PA) Jul-07 12 Interstate Pipeline System of National Fuel Gas Supply Corp
Imperial (Imperial, PA) Sep-07 6 Interstate Pipeline System of National Fuel Gas Supply Corp
Shade (Cairnbrook, PA) Jun-07 4 Dominion pipeline system
Southern (Davidsville, PA) Jun-07 2 Dominion pipeline system
Oklahoma City (OKC, OK) May-08 2 Southern Star Pipeline
Carter Valley (Church Hill, TN) Nov-08 2 Intrastate pipeline system of Tengasco, Inc.
Winder (Winder, GA) Dec-08 6 Municipal Gas Authority of Georgia Local Distribution
Live Oak (Atlanta, GA) Feb-09 7 Atlanta Gas & Light Local Distribuion
Cedar Hills (Seattle, WA) Feb-09 16 Puget Sound Energy Local Distribution
Seneca (Pittsburgh, PA) Dec-10 4 Dominion pipeline system
River Birch (New Orleans, LA) May-10 9 ATMOS Pipeline, LDC
Meadow Branch (Athens, TN) Aug-11 3 Spectra Energy’s East Tennessee Pipeline
Pt Loma WWTP (San Diego, CA) Mar-12 2 SDG&E
Fresno WWTP (Fresno, CA) Mar-12 2 Local plant use
Midwest Landfill Nov-14 5 Pipeline, eventual CNG vehicle
Seneca Meadows (NY) Apr-14 4.3 Pipeline
SWACO (Ohio) Apr-14 8.6 Pipeline
WWTP (Chile) Est'd 1Q 2015 2.8 Pipeline
Oklahoma City (OKC, OK) Est'd 2Q 2015 2 Southern Star Pipeline
TOTAL 106
3 Air Liquide All-Membrane Solution for Gas Processing
Gas Permeation
Air Liquide - Confidential
FEED
CH4
CO2,
N2, O2
H2O, H2S
Biogas Feed 200 PSIG CH4 = 50-70% CO2 = 30-50%
Product 99-98 % CH4 1-2 % CO2
PRODUCT
CH4
REJECT
CO2,O2
H2O, H2S
Reject
4 Air Liquide All-Membrane Solution for Gas Processing
BIOGAS UPGRADING (WITHOUT N2 - DIGESTER)
1 November 2016 MEDAL - aBT Americas -
Confidential
Membrane
Stage #1
PRODUCT
150 psig
CH4 = 98+%
CO2 <1-2%
O2<0.2%
H2O=Dry
Siloxanes =
Nil
Feed
Compression
REJECT
TO FLARE
FEED
0 psig
100 F
200
psig
Recycle (To Improve Methane Recovery)
Membrane
Stage #2
Pre-Treat
(Case
Specific)
5 Air Liquide All-Membrane Solution for Gas Processing
TYPICAL SKID
6 Air Liquide All-Membrane Solution for Gas Processing 1 November 2016 MEDAL - aBT Americas -
Confidential
7 Air Liquide All-Membrane Solution for Gas Processing
PT Loma WWTP, Biogas to Pipeline & Fuel Cells
■ BioFuels Energy owner
■ Biogas to SDG&E Pipeline (Rule 30)
■ 3 FCE Fuel Cells 2 via directed Biomethane
1 on-site consuming actual biomethane
■ Gas processing by Air Liquide
■ Total plant built and operated by SCS
Sales Gas
Source: SCS
8 Air Liquide All-Membrane Solution for Gas Processing
Air Liquide Live Oak Biomethane Plant
■ LFG from WM Live Oak Landfill, Conley, GA
■ 2000 MMBtu/Day into pipeline as directed biomethane
■ Extreme reliability (98% production, 99.5% equipment availability)
■ Platform for continuing biomethane related developments
9 Air Liquide All-Membrane Solution for Gas Processing
NITROGEN REJECTION WITH MEMBRANES (LANDFILL)
1 November 2016 MEDAL - aBT Americas -
Confidential
Membrane REJECTED
NITROGEN
150 psig Feed
Compression
PRODUCT
N2 = 2 to 4%
FEED
150 psig
100 F
Recycle (To Improve Methane Recovery)
Product
Compression
10 Air Liquide All-Membrane Solution for Gas Processing
Market Opportunities and Challenges
■ Opportunity – High value for renewable fuels
Long term value and financing a challenge
■ Digester
Generally air free making upgrading easier (O2 removed in the membrane)
Siloxanes - must be removed for Rule 30
High H2S – In California requires separate removal
High cost for pipeline interconnect and product analysis (esp. small plants)
WWTP – Challenge is municipal structure (delays)
Dairy – Main issue is scale
Food waste – Can contain a range of impurities not common to other digesters
■ Landfill
Contains a level of N2 and O2 (along with high levels of VOCs)
For Rule 30 for 990 BTU/ft3 (98% CH4) will need to add N2 rejection (higher cost, lower
recovery) and can also need propane injection
Needs larger flow rates than digesters to be economic
23 July 2015 Air Liquide - Confidential
11 Air Liquide All-Membrane Solution for Gas Processing 1 November 2016 MEDAL - aBT Americas -
Confidential