Gas Turbines at PACT Research and Development on Gas Turbines and CCS - talk by Karen Finney, University of Leeds, at the opening of the UKCCSRC PACT Beighton facility

1. Dr Karen N Finney
with Prof Mohamed Pourkashanian, Dr Kevin Hughes and Thom Best
20th June 2014
Gas Turbines at PACT Research and Development on Gas Turbines and CCS
ETII – Energy Technology and Innovation Initiative

2. Turbec T100 Gas Turbines
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Two Turbec T100 PH gas turbines fuelled with natural gas:
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GT Series 1 (manufactured in 2000)
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GT Series 3 (manufactured in 2012)
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Combined heat and power design:
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100 kWe at an electrical efficiency of ~30%
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plus ~165 kWth improves the overall efficiency to ~77%
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Heat transfer components to improve efficiency: recuperator for preheating the compressed inlet air and a counter-current water-gas heat exchanger for generating hot water
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Single, centrifugal compressor (pressure ratio of 4.5 : 1) plus a radial turbine on the same shaft as the generator
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Lean, premixed combustor results in low NOx, CO and UHCs
S1
S3

3. Turbec T100 Gas Turbines
GAS TURBINE SPECIFICATION
Compressor ratio
4.5 : 1
Maximum fuel gas consumption
330 kW
Turbine inlet temperature
~950°C
Turbine outlet temperature
~645°C
Maximum generator speed
70,000 rpm
Exhaust gas flow
0.80 kg/s
Electrical power generation
40-100 kW
Electrical efficiency
30%
Thermal power generation
up to 155 kW
Total CHP efficiency
77%
CO2 concentration
1.3-1.8 vol%
Emissions at full load*
<15 ppm/v NOx and CO
* emissions at 15% O2 and 15°C air inlet temperature

4. Turbec T100 Gas Turbines
electrical generator
turbine engine
recuperator
heat exchanger
control system
auxiliary systems
combustion chamber
power electronics
air in
flue gas out

5. Turbec T100 Gas Turbines

6. Gas Analysis
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Cambustion DMS500 particle analyser:
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real-time data for particle size spectra
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particle measurement programme-correlated number
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gravimetrically-correlated mass
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GASMET FTIR for combustion gas analysis:
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H2O
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CO and CO2
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SO2, NH3, N2O, NO, NO2 and NOx as NO2
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CH4, C2H4, C3H8, C6H12, CHOH and TOC
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ability to monitor a range of other species as well for other purposes
•
Other Horiba and Signal analysers for combustion gas analysis

7. Gas-FACTS
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Gas-FACTS: Gas – Future Advanced Capture Technology Systems
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Focussing on carbon capture from natural gas power generation, concerning combined cycle gas turbines and solvent-based post- combustion CO2 capture
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Three-year EPSRC funded research programme involving a consortium of UK universities and an industrial advisory panel of experts (including international academics)
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Leeds, Sheffield, Cranfield, Edinburgh and Imperial College
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Programme involves extensive experimental work at the UKCCSRC PACT Core and Satellite Facilities, as well as in depth process simulation and theoretical modelling using a range of software

8. Gas-FACTS WP Overview
WP1:
Gas turbine options for improved CCS system performance
(Leeds/Sheffield/Cranfield/Edinburgh)
WP2:
Advanced post combustion solvent capture for future gas power systems
(Leeds/Imperial/Cranfield/Edinburgh)
WP3: Integration and whole systems performance assessment (all)
WP4: Impact delivery and expert interaction activities (all)
four highly interlinked work packages
WP1:
Gas turbine options for improved CCS system performance
(Leeds/Sheffield/Cranfield/Edinburgh)
1.1: HAT system concepts and modelling
1.2: Exhaust gas recycle
a) EGR tests on GT
b) EGR modelling, implications at range of GT sizes/configurations
1.3: CO2 transfer and recycle
a) system concepts and modelling
b) membrane system performance and durability tests
c) rotating wheel with solid ad/absorbents: concepts and modelling

9. Gas-FACTS WP Overview

10. Modifications for Gas-FACTS
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Instrumentation of the gas turbines:
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thermocouples
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pressure transducers
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flowrate measurements
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dew point measurements?
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for more detailed analysis of the gas turbine, especially for combustion calculations and validation of CFD modelling and process simulations
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Flue gas recirculation (FGR):
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CO2 injection into the air inlet
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simulated FGR using CO2 injection and trace species to air inlet
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FGR, by recycling a proportion of flue gas back to air inlet
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high levels of FGR plus O2 injection
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for enhancing the CO2 concentration in the flue gas to improve the efficiency of post-combustion capture and minimise the energy penalty

11. Instrumentation for the GTs
temperature, pressure and flowrate measurements for the gas turbines

12. FGR and Extra Instrumentation
temperature, pressure and flowrate measurements for the gas turbines with flue gas recirculation loop

13. Dr Karen N Finney
k.n.finney@leeds.ac.uk
Gas Turbines at PACT Thank you