Praxair Business Confidential
Praxair’s Oxygen Transport
Membrane Technology for Syngas
and Power Applications
Juan Li
DOE/NETL Carbon Capture Meeting
Pittsburgh, PA ● June 26, 2015
OTM
Praxair OTM Technology NT43088 22
Project Overview – OTM for Industrial Applications
OTM for Industrial Applications (ARRA)
5 year (2010-2015)
$55MM, 63% DOE share
─ Project Objectives
• Develop robust, cost effective membranes
• Develop multi-tube OTM modules
• Demonstrate conversion of NG to syngas with OTM modules
• TEA of NG-fired oxycombustion power cycle with CCS
Praxair OTM Technology NT43088 33
Project Overview – OTM-Enhanced Gasification
OTM-Enhanced Coal Syngas for
Carbon Capture Power Systems and
Fuel Synthesis Applications
$10MM, 50% DOE share
2 year, Oct. 1 2014 - Sept. 30 2016
─ Project Objectives
• TEA of OTM-enhanced IG-NGCC process w/CO2 capture
• Develop OTM with integrated catalyst
• Develop OTM supporting layer and ceramic seal for high pressure application
• Develop OTM modules and demonstrate in small-pilot scale test with simulated coal syngas
Dryer
CO2
Water
CO2 Compressors
Purif.
Impurities
CPU
O2
O2 -Depleted Air
Air
Air Heater
OTM
CONVERTER
BFW
Air
Steam Cycle
SELEXOL
AGR
HRSG
F-CLASS GT
WGS
SG COOLING
Steam
H2
CO2
N2
NG HDS
Steam
H2
To H2 product or
Fischer-Tropsch
Synthesis (Synfuels)
Cryo
ASUSlag
Air
N2
Hg
Removal
DeS
Sulfur
Coal
SlurryChar
O2
CB&I Gasifier
(E-Gas)
Praxair OTM Technology NT43088 4
Praxair OTM – How it works:
Combustion-driven air separation at high pressure without ASU and air compression
Dual phase
dense layer
Cross SectionHigh
Pressure
Fuel
Porous support Active layers
Electrons
Pure
Oxygen
Low
Pressure
Air
950-1000oC
Oxy-
combustion
Product
Praxair OTM Technology NT43088 5
Praxair OTM Syngas Technology
Combined reforming in a single integrated efficient package
Primary Steam
Methane ReformerAir Separation
Unit
Secondary AutoThermal
Reformer
Multi-Process
Combined
Reforming
Solid state
combined
reforming with
OTM
O2
HeatOTM
(with catalyst)
Low
Pressure
Air
Steam + NGSyngas
Partially
Reformed
Syngas
Reformer
Reforming
Catalyst
Praxair OTM Technology NT43088 66
OTM-Enhanced IG-NGCC Concept (NG+Coal)
Integration of OTM Syngas into Coal + NG Power Cycle w/ CCS
Low
Pressure
Air
O2-
Heat
OTM
+ Catalyst
Depleted
Air
Natural Gas
+ SteamCoal
Syngas
Reformer
Upgraded
SyngasFlex-fuel Power with CO2, H2, and or FT Liquids co-products
Praxair OTM Technology NT43088 77
Gasifier Integration Vision
Synergies in GTCC + Fossil Fuel to Liquids
Praxair OTM Technology NT43088 8
An ARRA Success Story…
Breakthrough innovations on all fronts
O2-
O2-
Depleted
Air
Steam
+ NG
Syngas
OTM
Reforming
Catalyst
O2
HeatOTM
(with catalyst)
Low
Pressure
Air
Steam + NGSyngas
Partially
Reformed
SyngasReformer
Reforming
Catalyst
Early OTM
• 2X increase in O2 flux• 4X increase in creep life• 10X reduction in degradation
Membrane
System
• Optimal H2/CO ratio• Higher NG conversion• Lower CO2 footprint
• Low pressure shell• Scalable architecture• Modular construction
Process
• Demonstrated complete syngas island
• Robust operability and control
Praxair OTM Technology NT43088 99
Test Systems Developed in ARRA Project
Successful integration of membranes into systems
Successful multi-module syngas
production
• Operating with 6 panel modules (216
OTM tubes)
• Representative commercial process
elements
• Multiple successful heating / cooling
cycles
• Capacity up to 190 Nm3/hr syngas
Modules have shown excellent
operational flexibility
• 17 Modules tested (>370 OTM
tubes)
• More than 8,000 hrs of flux testing
• >40 module thermal cycles
• Ceramics robust to thermal and
chemical cycling
Single Tube Testing Module Testing System Testing
Membranes can deliver
requirements of the process
• Flux and fuel conversion
demonstrated
• >42,000 hrs over 67 tubes
• Focus on Gen 2 membrane
characterization at high pressure
Praxair OTM Technology NT43088 1010
Technology Development ─ Seal and Membrane
High temp burst test
Baseline Aging Test (BAT)
Pressure integrity: > 4X safety factor
Accelerated life and reliability testing of tubes &
seals in progress
Creep/reliability testOn-line laser creep test Normalized creep life
0.0 1.0 2.0 3.0 4.0
12 samples
Gen.1 Gen.2
Com
mercial target
~4X increase in OTM creep life
Run time,hrs
Thermal cycles
Failures
BAT # 01 16350 10 0
BAT # 02 14400 7 0
BAT # 03 13390 8 0
Praxair OTM Technology NT43088 11
Integrated Combined Reformer Panel Array
Combined reforming in a single pass
ceramic membranes
reformer
OTMs
Reformers
NG + Steam
to reformers
Product
Syngas
Thermal integration
Praxair OTM Technology NT43088 12
Reliable Operation of Development System
Technology ready for larger scale demonstration
• 6 panel arrays (216 OTM tubes)
• Daily operation since October 2014
• 7 full thermal cycles
• >100 start-up / shut-down cycles
Praxair OTM Technology NT43088 13
OTM Development System
Panels have operated through multiple thermal,
pressure, fuel cycles and shocks
3 panels
108 tubes
deep thermal
cycles
process
stream
cycles
Power failure
System Upgrades
6 panels
216 tubes
NG
Flow
OTM
Temp
Air
Temp
Praxair OTM Technology NT43088 14
Panel Array Scale-up
Larger panels through longer ceramic units / more units
Single Panel
36 tubesDouble Panel
184 tubes
(5x Increase)
2 ft. 4 ft.
Praxair OTM Technology NT43088 1515
O2
O2 -Depleted Air
Air
Air Heater
OTM
CONVERTER
BFW TDA CO2
Separation
System
WGS
SG COOLING
Steam
H2
CO2
Vent
NG
O2
CO2
Syngas
Generator
NG HDS
Steam
H2
Steam
Syngas Product Flare
Small-Pilot Scale Integration
Slipstream:
shift and separation
PX Syngas Generators
(simulate coal syngas)OTM Syngas Reactor TDA Shift/Separation Skid
Praxair OTM Technology NT43088 1616
Summary and Plan
Key Result
─ Step change in membrane materials and mfg. process
─ OTM and seals robust to pressure and thermal cycles
─ Demonstrated process to make syngas with ceramic membranes
─ Module design to achieve thermal integration and facilitate scale-up
─ Compelling economics for chemicals synthesis and power w/CCS applications
Next Step
─ ARRA Project
• TEA of OTM-based NG-fired power cycle
─ OTM-enhanced Gasification Project
• Process simulation and TEA of OTM-enhanced IGCC process
• Development of OTM with integrated catalyst for high pressure operation
• Small-pilot scale test of OTM converter with TDA’s WGS/CO2 separation equipment
Praxair OTM Technology NT43088 17
Acknowledgements
This material is based upon work supported by the Department of Energy under Award Number DE-FE26-07NT43088 and DE-
FE0023543. Neither the United States Government nor any agency thereof, nor any of their employees, makes any warranty, express or
implied, or assumes any legal liability or responsibility for the accuracy, completeness, or usefulness of any information, apparatus,
product, or process disclosed, or represents that its use would not infringe privately owned rights. Reference herein to any specific
commercial product, process, or service by trade name, trademark, manufacturer, or otherwise does not necessarily constitute or imply
its endorsement, recommendation, or favoring by the United States Government or any agency thereof. The views and options of
authors expressed herein do not necessarily state or reflect those of the United States government or any Agency thereof.
.
Thank you!
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