Fact Sheet:
“System Study For Improved Gas Turbine Performance For
Coal IGCC Application”
DOE Contract No: DE-FC26-03NT41889
I Project
Description:
A.
Objective:
This study will identify improvements in gas turbine performance for coal Integrated
Gasification Combined Cycle (IGCC) application. The study will identify vital gas
turbine parameters and quantify their influence in meeting the DOE Turbine Program
overall IGCC plant goals of 50% net HHV efficiency, $1000/kW capital cost, and low
emissions. Focus will be on air-cooled gas turbines for near-term operation in coal fed
oxygen blown IGCC power plants with commercially demonstrated gasification, gas
cleaning, & air separation technologies. A roadmap towards achieving DOE’s goals for
the Turbine Program will be defined, and will provide a total systems-level perspective to
identify the development needs and improvements that have the highest impact/ payback
to the program.
B.
Background/Relevancy
Background:
In the near term as reliance on natural gas increases and prices escalate opportunities will
arise to reinvest in the use of coal, our nations most abundant fossil fuel resource.
Estimates suggest that 31 gigawatts of new coal-based power generation will be installed
over the next 17 years. The US generates approximately 50% of its power from coal.
Much of this added capacity could be based on integrated gasification combined-cycle
technology (IGCC). Significant improvements in overall cycle efficiency and cost per
unit of power will dramatically reduce generation costs and emissions. This will help
provide low-cost, environmentally acceptable power from a domestically abundant low
cost fuel.
Relevancy:
Clean, efficient and cost effective coal based power systems depend on advanced power
turbine technology to achieve higher levels of efficiency. IGCC technology has been
demonstrated to show superiority in both performance and emissions compared with
conventional coal power generation technology. However, additional enhancements in
IGCC will be needed to gain superiority in life cycle electricity costs. One area of
improvement is in the gas turbine portion of the cycle, which is the primary energy
conversion device within an IGCC power plant. Increases in gas turbine conversion
July 20, 2004
efficiency of coal derived syngas energy to power and higher utilization of exhaust
energy will help drive lower IGCC plant level generating costs.
Meeting of DOE overall IGCC plant goals of 50% net HHV efficiency, $1000/kW capital
cost, and low emissions for a 500 MW coal plant could provide annual generating cost
savings of about $50 MM/yr compared to current F-Class IGCC systems and about $20
MM/yr compared to conventional PC technology. Additional enhancements in the area
of emitted NOx and SOx could also be realized making IGCC the technology of choice
for coal based power production.
C.
Period of Performance:
January 01, 2004 to March 31, 2005
D.
Project Summary:
This 15-month project will identify vital gas turbine parameters and quantify their
influence in meeting the DOE Turbine Program overall Integrated Gasification Combined
Cycle (IGCC) plant goals of 50% net HHV efficiency, $1000/kW capital cost, and low
emissions. The project will analytically evaluate gas turbine conceptual cycle designs
and quantify their influence on IGCC plant level performance. The study will also
provide DOE with information to set strategy for follow-on Turbine Program phases
through identification of future technologies for advancing IGCC gas turbine
performance.
A baseline conceptual IGCC system design will be established utilizing current General
Electric (GE) F-class gas turbine technology based on a US IGCC site. Confirmation of
DOE Turbine Program plant level performance goals would lead into brainstorming of
gas turbine cycle concepts to be investigated. Overall IGCC system performance model
will be constructed utilizing GE in house proprietary software for the gas turbine & steam
turbine and commercially available software for the balance of the systems. The model
will be exercised through parametric analysis to quantify gas turbine performance impact
at IGCC plant system level. Results from the system analysis will be used to identify gas
turbine technology improvements for development consideration in future Turbine
Program phases.
The proposed program will be performed through the following five major tasks utilizing
GE’s Design for Six Sigma methodology:
1.
Overall IGCC Plant Level Requirements Identification
2.
Requirements Prioritization & Flow-Down to Gas Turbine Subsystem Level
3.
IGCC Conceptual System Analysis
4.
Gas Turbine Cycle Options vs. Requirements Evaluation
5.
Recommendations for Gas Turbine Technical Improvements
II Project
Participants:
A.
Prime Participant:
General Electric Company, General Electric Power Systems
B.
Sub-Award Participants:
None
III Project
Costs
A. DOE Costs:
$298,336 (60%)
B. Prime Contractor Cost Sharing:
$198,891 (40%)
IV Major Accomplishments Since Beginning of the Project:
Dates: Accomplishment:
•
February 28, 2004
Gas Turbine Plant Level Requirements identified from Overall
IGCC Plant Level Goals
•
April 30, 2004
Gas Turbine Subsystem Cycle Parameters prioritized from Gas
Turbine Plant Level Requirements
•
June 30, 2004
Baseline F Class O2 Blown coal IGCC Model completed
V
Major Activities Planned During Next 6 Months:
Planned Activity:
•
Exercise coal IGCC Model for establishing influence coefficients of key gas turbine
cycle parameters on IGCC plant level goals
•
Modify coal IGCC Model for ability to do new gas turbine cycle designs
•
Exercise coal IGCC Model for gas turbine cycle trade off studies
•
Monthly Highlight Status Reports (Monthly)
•
Financial Status Report (Quarterly)
•
Federal Cash Transaction Report (Quarterly)
•
Technical Progress Report (Semi-annual)
•
Program Fact Sheet (Semi-annual)
VI Issues:
No issues have been identified.
VII Attachments:
A.
Schematic
: None warranted
B.
Project Schedule
Systems Study For Improved GT Performance For Coal IGCC Application
Task 1.0
–
Identify Systems Requirements
Task 2.0
–
Prioritize
Req'mts
/Select GT Cycle Design Spec.
Task 3.0
–
Perform IGCC Conceptual System Analysis
Task 4.0
–
Evaluate GT Cycle Options vs.
Req'mts
Task 5.0
–
Recommendations for GT Improvements
Task 6.0
–
Program Management and Reporting
Final
Report
2004
2005
Q1
Q2
Q3
Q4
Q1
Q2