Turbomachinery and Process Solutions Low Emissions gas turbine solutions M.Santini/ M.Baldini 22 March, 2018
Green strategy beyond GT Flange to Flange NOx and CO Emissions reduction CO2 footprint reduction Renewables & Energy Storage GT Hybridization Leverage on Electrical Power Process Gas Cooling Leverage on waste heat recovery VFD technology Expander compressor technology March 26, 2018 2
Turbomachinery & Process Solutions Electric Power to boost GT performance March 26, 2018 3
Gas Turbine performance Gas turbines power is affected by ambient temperature and emissions are affected by power Power vs ambient temperature Emissions vs power Electrical Machine is a flexible solution designed to: Improve GT emission profile Provide additional power to the Gas Turbine driver as needed (e.g. hot days) Recover excess power during cold days March 26, 2018 4
Our experience in LNG segment Helper The concept apply an electrical machine on same shaft of the gas turbine, integrating the gas turbine with the benefits of an electrical machine GT comp VFD Helper/ Starter GT comp comp VFD The system allows synergy operation between electrical machine and gas turbine without any impact on process demand, flexibility, operation and turndown. VFD Starter/Generator Use electric power to boost GT performance March 26, 2018 5
New Configuration (Patent pending) Electrical machine coupled on GT shaft with a self-synchronizing clutch between GT and load compressor for a full electric mode operation Electrical Machine Variable Frequency Driver VFD 1-20 MW Operating mode Helper Generator Zero emissions No need of additional gear box or need to run at fixed speed Value Proposition Production increase Reduce fuel and emissions Wide operation flexibility without impact on process operability Full electric mode operation with GT in shutdown Gas turbine life extension Scope of work Solution applicable for HD& AD GTs Electric machine Variable Speed Drive Clutch - well proven technology - Auxiliaries and Control panel modification Installation March 26, 2018 6
Dynamic strategy power management Fuel controller clutch Electrical Machine (VFD) Power controller Energy storage Customer target priorities: Emissions NOx & CO (ppm) Emissions CO2 (ppm) Process production -GT set point Specific site data: GT efficiency GT combustion dynamics Emissions Weather conditions (actual/forecast) Dynamic Strategy Decision curve Fuel #1 Priority Power (-/+) Motor Production MW Generator Solar Wind Hydro Thermal Plant March 26, 2018 7
Conclusions Configuration: Electric motor to be installed on GT High Pressure shaft or compressor side according to GT technology PGT 25 and MS 5002 technology already analyzed in engineering feasibility study Benefits: Fuel & Emissions optimization Pure Power control allows power increase on demand Pure Life extension control allows significantly longer maintenance cycle Trade off between Power and life increase can be customized according the specific client needs March 26, 2018 8
Turbomachinery & Process Solutions Process gas cooling March 26, 2018 9
Process gas cooling Value proposition Convert waste heat into compressor efficiency (6-10%, fuel and CO2 emission reductions) and/or GT power increase ( to +10%) depending on site conditions and applications No gas seals system, no lube oil,no gear high reliability Multi units configuration capability Gas Turbine Life extension Power generation to cover compressor station self consumption (as option) Applicability Patent pending Possible configurations Mechanical Drive trains Process fluid compressor inlet cooling Pipeline Compression Inter-coolers All Gas Turbines with power greater than 10 MW Process plant refrigeration Green field and Brown field Gas turbine inlet chiller March 26, 2018 10
Process gas cooling features Pros Same working fluid for ORC, chiller & power gen Design flexibility allowing fit-for-purpose solutions Well referenced equipments - Expander compressor & pumps No gas seals system, no lube oil, no gear - high reliability Total sealed systems Cons Brown field need exhaust system modification to install the Diathermic oil circuit Air condenser has invasive footprint Expander compressor technology Magnetic bearings Seal less system - avoiding refilling and fluid contamination Technology well referenced March 26, 2018 11
Expander compressor technology March 26, 2018 12
Process gas cooling Main scope of supply WHR Diathermic Oil Circuit Process Fluid Propane Island Pumps Expander Compressor (Estimated footprint 3,5 x 5m * ) Heat exchanger - Hot and Cold Propane Evaporator Air Condenser (Estimated footprint 35m x 15m *) or Water Condenser (Estimated footprint 2m x 6m*) Instrumentation and valves Control Panels Cycle propane area Estimated footprint 15m x 5m* Dimensions are referred to a 10MW chilling size (2800 refrigeration tons)with a 4 MW exp. @40 C amb temp March 26, 2018 13
Contacts Marco Santini New Industrial Application Product Leader Turbomachinery & Process Solutions Baker Hughes, a GE Company T:+39 055 458 9953 M:+39 345 9128452 marco.santini@bhge.com Marco Baldini Gas Turbine & Industrial Application Upgrades Manager Turbomachinery & Process Solutions Baker Hughes, a GE company T +39 055 458 9113 M +39 342 563 5102 marco.baldini@bhge.com 14