Flexible Seawater Desalination With LMS100 Gas Turbine Using MED and RO Combinations

Transcription

1 Flexible Seawater Desalination With LMS100 Gas Turbine Using MED and RO Combinations Bulent Mehmetli / Richard Watkins POWER-GEN Middle East, 13 October 2014 Imagination at work

2 LMS100 presentation contents GE s Aeroderivative Gas Turbines and LMS100 genealogy Intercooler and secondary heat rejection options How Multi Effect Distillation is applied Customer benefits 2

3 Gas turbine product line LM2500/TM2500 LM6000 LMS % eff. Legacy engine: 40+years 99% reliability; 1M OPHs Applications Emergency/temp power Verticals: Mining, oil and gas Marine: defense, fast ferry Wins Japan: Emergency response Ecuador/Oman: Temp power Brazil: FPSO/Oil & Gas % eff. Intro 91 1,000 th unit 10 Fast response flexible CC % efficiency Cleaner heat and power LNG/Mechanical drive Dual fuel DLE China: Huadian CHP US: Black Hills, Colorado Brazil: Sugarcane ethanol % New DLE 2.0 technology Global acceptance Grid stability Power generation Mechanical drive Russia: 14 Olympics in Venue, Sochi US: 23 (+5) California units 3

4 LMS100* Genealogy Building on proven technology LM6000 Introduced in units 21 million hours 99% reliability 98% availability CF6-80C2 Introduced in 85 3,800 units 173 million hours 6FA Introduced in units 2.5 million hours LMS100 Design experience and commonality * LMS100 is a registered trademark of the General Electric Company (USA) 4

5 Proven technologies integrated in a 3-shaft 100+ MW gas turbine package CF6-80C2 High Pressure Compressor (HPC) Aeroderivative Single annular or DLE combustor Frame derivative Power turbine shaft MS6001FA Low Pressure Compressor (LPC) Intercooler System CF6-80E High Pressure Turbine (HPT) Frame derivative Exhaust diffuser Aeroderivative Power Turbine (LPT) Aeroderivative Intermediate Pressure Turbine (IPT) 5

6 Current package dimensions 73 feet 22.2 meters 113 feet 34.4 meters 6

7 Intercooler is the key to LMS100 performance Enables high mass flow, pressure ratio, hot-day power Power reduction over ambient T Aero Frame Frame VBV system LMS100 VBV silencer Intercooler water flow: 22,711 lpm (6,000 gpm) for 2-pass 52C (125 F) to 28C (82 F) 8,706 lpm (2,300 gpm) for 6-pass 90C (195 F) to 28C (82 F) Cooling water skid 95 deg F (35 deg C) 55 psi (3.8 bar) 392 deg F (200 deg C) 56 psi (3.9 bar)

8 Ideal T-S Diagram for an intercooled gas turbine cycle (using LMS100 thermodynamic cycle station numbers) 41 Q comb Temperature 3 23 Low Pressure Compressor 50 High Pressure Compressor 25 Q ic 2 Q exh Note: Not drawn to scale Entropy A fundamentally more efficient cycle is enabled by modern control technology

9 LMS100 Energy Balance at Baseload, hot & humid day Exhaust ~ 90 MWth, ~ 39% Generator losses Generator power ~ 103 MWe, ~ 44% Other losses Fuel~ 234MWth, LHV Interc ooler ~ 34 MWth, ~ 15% Rough figures, details depend on ambient and model conditions! 9

10 CHP (CC + Intercooler Heat) Gas Turbine: ~ 103 MWe 44 % eff.pts. Steam Turbine: ~ 20.5 MWe 8.5% eff.pts. Fin Fan Cooler 35 0 C Water C 300 t/hr Heat Exchanger Process: ~ 27 MWt 11.5% eff.pts C TOTAL CHP 124 MWe+27 MWt 64 %

11 Load Following / Deep Turndown Capability 11

12 Cengiz Energy Samsun, Turkey (2) LMS100s in CC (250 MW) Cooling system uses seawater (Black Sea) 12

13 Multiple Effect Distillation Bulb enclosure Vessel Distillate vapor Heating fluid from intercooler Tubes or plates Heating fluid back to intercooler Sea water (Distillate) Distillate MED Advantages Low energy consumption Low temp operation Simple Reliable Low opex

14 MED RO Combination LMS100 can operate at either CC or SC mode If SC is chosen, all exhaust heat is available for MED (or MSF if feasible) If CC is chosen: CC efficiency>52% for full condensing configuration Use extraction to increase MED capacity Use MED for Intercooler heat Use all extra heat (from condenser, stack and IC) for RO heating Adjust MED/RO according to power and water needs

15 LMS100 in Desalination Configuration set the benchmark for defining operational flexibility while sustaining medium size power and water needs 1. Fast starts zero to 100% in 10 minutes 2. High efficiency % in SC 3. Fast response 50 MW per minute ramp-up 4. Power for frequency support reserved power, under frequency support 5. High part load efficiency... for flexible operation 6. Multiple daily starts no maintenance penalties 7. Cycle type ability to run SC or CC 8. Zero water capable with DLE 9. High availability and reliability longer maintenance intervals 15