Post on 19-Sep-2020
transcript
Bob McGinty / Mitsubishi Hitachi Power Systems
Why Does the World Need This Product?
Corporate Qualification
Innovative & Improved Technical Advances(System Design, Catalyst, Modeling)
Validation of Innovation(Reference Plants - Historical Performance)
Federal & Independent Findings
Increasing renewables penetration of the electrical grid is creating the need for fast-starting peaking power.
Simple Cycle Gas Turbine with SCR provides the most affordable, flexible and low emissions solution.
Renewable Power Creates New Challenges
MHPS ONLY OEM who can wrap both the Gas Turbine and the SCR for Simple Cycle Applications
to meet Current and Future Environmental Regulations
Leader In Gas Turbine and SCR Technology
Multiple Models w/ Hot SCR BACT LAER*
9 ppm ≤2 ppm2-25 ppm <2.5 ppm
15 ppm ≤2 ppm
Advanced Class Gas Turbines Hi Temp Hot SCR
NO
x
*Requirement
in
Nonattainment
Regions
(and growing)
Installations Worldwide – Original Pioneer of SCR Technology
MHPSAJapan, Asia, North & South America
BoilerCoal 173Oil 103Gas 52
Gas Turbine 423Diesel Engine 224
FCC & Refinery Heater
48
Total Units Installed
1023
Over 40 years of first hand experience
Over 400 SCRs Installed on Gas Turbines
86 SCRs Installed for Simple Cycle applications
Stack
SCR Catalyst
CO Catalyst
Ammonia Storage Tank
Ammonia Pump Skid
Ammonia Vaporizing Skid
Ammonia Injection Grid
Tempering Air Injection
Add’l Scope
• AFCU
• PLC
• Tech Advisor
• Training
Options
• Ammonia Tank
• Pump Skid
Guarantees
• NOx; CO; VOC
• Ammonia Slip
• Parasitic Power
• Pressure drop
• Noise
• Catalyst Life
SCR Catalyst
Ceramic Design
CO Catalyst
Platinum Based
Super-modules Tunable
AIG & Distribution
Headers
Patented Tempering
Air System &
Injection Nozzles
Lined Stack,
Silencer & CEMS
High Performance
Reactor complete with
Turning Vanes &
Perforated Plates
Loading doors &
Platforms, Ladders
CT/SCR Transition
Duct Low dP loss
State of the Art Material Construction – Advanced Class Technology
Performance Driven
Distinct Compact
Reactor Designs
Large operating temperature range (350 - 1100oF)
70%
80%
90%
100%
500 600 700 800 900 1000 1100
Temperature [oF]
NO
x R
em
oval
Eff
icie
ncy
Zero V2O5
Low V2O5
High V2O5
NO = 50 ppmvd
NH3/NO = 1.25
O2 = 15.0%
H2O = 7.0%
Zero V2O5
Low V2O5
High V2O5
At higher temps, reduce V:W ratio
Stronger NH3 adsorption
Lower NH3 decomp rate
Higher DeNOx rate
Lower sintering rate
• High temp catalyst:
900F ~ 1,100F
• Medium-high temp catalyst:
800F ~ 900F
• Medium (Standard)
catalyst:
450F ~ 800F
Extruded catalyst
consistently demonstrates
uniform cell sizing and
pressure drop prediction
10
1) Develop flow distribution devices and injection ports to;
a) Achieve acceptable velocity distributions through CO and SCR
catalyst:
b) Achieve acceptable ammonia distribution at the inlet to the SCR
catalyst:
c) Achieve acceptable temperature distributions at the catalyst
inlets:
2) To determine from model measurements the system pressure
loss for the final configuration
• Typical Boundaries: Gas Turbine Diffuser Outlet through Stack
Outlet.
• CFD and CFM results, validates ammonia injection design,
ammonia mixing devices, tempering air distribution through
injection ports, turning vanes, perforated plates and flow
straightening devices.
- Major Design Concern;
a) Short Distance Available to Mix the Air
b) Conflicting requirement at the inlet duct
Mix the air into flue gas (Turbulence)
versus
Uniform gas flow necessary at CO catalyst face.
versus
Homogeneous ammonia mix in flue gas at SCR catalyst face
(Flow Straightening & Velocity Normalizing at Catalyst)
Challenging Turbine Exhaust Conditions – Typical
Flue gas exiting turbine diffuser up to ~200 FPS
Tempering air ~ 30% total flue gas volume
High exhaust gas temperature ~ 1200 degF
Contrasting optimum catalyst temperature profilesCT
SCRcata
CO cata
• Double entry tempering air ensures uniform air injection into duct
• Equally staged nozzles discharge across turbine exhaust cross section
• Directional nozzles allows tempering air penetration in high velocity zones
• High strength retaining structure construction ensures reliable performance
• All stainless steel design ensures mechanical integrity in high temperature zone
Core Technical Attribute Facilitating Less Than 2PPM NOx & Low Ammonia Slip
VAPORIZED NH3
EXHAUST
DUCT
LANCE PANELS
BALANCING
MANIFOLD
• Double entry balancing valves manifold to bias AIG
• Lance panels allows expedient optimization
• High density drilling, dense ammonia injection pattern
• Orifice flow measurements validate ammonia panel flow field balance
• Allows for future optimizing as catalyst ages or turbine performance degrades
Represents most responsive
balancing approach, easy to
adjust and fastest response,
does require additional piping,
valves and manifolds
Multi-Zone
Core Technical Attribute Facilitating Less Than 2PPM NOx & Low Ammonia Slip
Project K-PointSMUD
McClellan
TEPCO
Yokosuka
Carson
IceGen
NRG
Marsh
Landing
Calpine
Mickleton
Calpine
Carll’s
Corner
PNM
La Luz
CT M701F GE 7EA M701DA LM 6000SGT6
5000FW501AC
P&W
FT 4
TwinPac
LM6000
Gas Temp
Deg. F1112 1020 986 875 1146 900 900 <900
DeNOx Eff. 86% 90% 60% 90% 87% 75% 76% >94%
Start of
Operation
Jul.
1992
Apr.
2004
Aug.
1992June 1995
Apr.
2013
May
2015
May
2015
Nov.
2015
Operating
Hours3,000 >1000 4,081 25,000 >5000 >500 >400 >400
Tempering
Air FanYES NO NO NO YES NO NO Yes
Wide Range of Gas Turbine Models and Temperature Variations
Project FeaturesFour (4) F Class CTG’s
GT Peaking plant nominal 750 MW
Max operating temp: 1,146F
Emission Limits (15% O2 Dry Basis)
NOx & CO 2.0 ppmVOC 1.0 ppm
COD May 1, 2013 – 2016 Doubled hours/startsAs of 10/2016, AOH : 1404, 1238, 1190, 1200 = 5031
As of 10/2016, Starts : 257, 205, 223, 192 = 887
Many 1st in class technologiesPatented tempering air injection
Hybrid hot gas/electric heated vaporization skids
Self mixing high density ammonia injection
Triple Loop NOx control - over ramp conditions
Process ammonia trim back TDL
NRG Marsh LandingSCR for Large Frame Simple Cycle
Project GT Frame
K-Point M701F
SMUD McClellan EA Class
TEPCO Yokosuka M701DA
Calpine Mickleton W501A
Additional Frame Experience List
US Reference Validating “LAER” SCR Systems for Large Frame Class Turbines
“………NYISO’s proposal to use the F class frame unit with SCR
technology peaking unit for developing the capital cost estimate for
NYC, LI, and the G-J Locality is reasonable.
….…..NYISO’s conclusion that an F class frame unit with SCR will be
able to comply with dual fuel requirements is a reasonable one.
………Record of evidence presented in support of the frame unit with
SCR is adequate….
…….. NYISO’s proposal to use the F class frame unit with SCR as the
proxy unit in NYC, LI, and the G-J Locality is a reasonable one.”
FERC ORDER ACCEPTING TARIFF FILING SUBJECT TO CONDITION AND DENYING WAIVER 146 FERC ¶ 61,043. 28 January 2014
1
8
“…..Frame combustion turbine can be and has been successfully coupled with SCR to
meet strict environmental standards. These two mature, proven technologies – frame-type
combustion turbines and SCR systems – are not inherently incompatible or infeasible to
combine, but do require proper design and engineering…..
• Frame technology and SCR emission control systems are both proven technologies.
• The Marsh Landing Generating Station (MLGS) comprised of four F-Class turbines that
began operation in March 2013, has achieved its performance requirements, including
emission limits, using an SCR with an air tempering system designed by Mitsubishi.
• Recent advances in SCR design and catalyst formulation, along with commercial
experience, have eliminated any engineering basis for distinguishing between Aero-
derivative and frame-type combustion turbines in terms of the economic viability of
using SCR to comply with strict environmental limits…..”
The Brattle Group Inc. November 1, 2013 - Independent Evaluation of SCR System for Frame Type Combustion Turbines
Report for ICAP Demand Reset Curve
$1,836
$1,332 $1,330
$711 $797
$0
$500
$1,000
$1,500
$2,000
Recips x 12 FrameCombinedCycle x 1
Large Aero x 2 Frame SimpleCycle x 1*
Frame SimpleCycle w SCR
x1
Rela
tive
Ca
pit
al
Co
st(
$/k
W)
• Utilizing Frame Simple Cycle with SCR (No Operating Limitations) results in the most cost effective peaking application
No operating limitation of frame with SCR outweighs the $86/kW increase in CAPEX
• FERC January 2014 Ruling2
“We find that NYISO’s proposal to use the F class frame unit with SCR technology peaking unit for developing the capital cost estimate for NYC, LI, and the G-J Locality is reasonable.”
Cost Effectively Meeting NOx Emissions Limits (BACT/LAER) 2 PPM
1Initial NYISO Report before FERC ruling; Zone C from Table 3 and Appendix B:
Proposed NYISO Installed Capacity Demand Curves For Capability Years 2014/2015, 2015/2016 and 2016/20172FERC ORDER ACCEPTING TARIFF FILING SUBJECT TO CONDITION AND DENYING WAIVER 146 FERC ¶ 61,043. 28 January 2014
*950 hour operating limit due to
NOx Emissions
Robert McGinty
Mitsubishi Hitachi Power Systems Americas
Senior Product Manager
Gas Turbine and Industrial SCR Systems
Office: 949-856-8419 Mobile: 949-633-8614
robert.mcginty@mhpowersystems.com