Improving Flexibility of IGCC for Harmonizing with Renewable Energy - Osaki CoolGen’s Efforts -
Table of Contents 1. Project Background 2. Progress of Osaki CoolGen Project (1) Outline of Osaki CoolGen Project (2) Progress of the Step 1 ‐ Demonstration of Oxygen-blown IGCC ‐ (3) Progress of the Step 2 ‐ Demonstration of IGCC with CO 2 capture ‐ 3. Challenges for Improving Flexibility 4. Goal of Osaki CoolGen Project 1
Table of Contents 1. Project Background 2. Progress of Osaki CoolGen Project (1) Outline of Osaki CoolGen Project (2) Progress of the Step 1 ‐ Demonstration of Oxygen-blown IGCC ‐ (3) Progress of the Step 2 ‐ Demonstration of IGCC with CO 2 capture ‐ 3. Challenges for Improving Flexibility 4. Goal of Osaki CoolGen Project 2
Development Roadmap of HELE Coal Power Generation Technology in Japan Integrated coal Gasification Fuel Cell combined cycle (IGFC) Fuel Cell(FC) HRSG (MCFC) (SOFC) Fuel cell Integrated coal Gasification Steam turbine Gasifier Gas turbine Combined Cycle(IGCC) 55% ～ HRSG CO 2 reduction about ▲ 30% 1300 ℃ IGCC 1500 ℃ IGCC 1700 ℃ IGCC 46 ~ 48% Steam turbine Gasifier Gas turbine CO 2 reduction Pulverized Coal Fired(PCF) about ▲ 15% Advanced USC Ultra SC Super Critical (A-USC) (USC) (SC) Boiler 46 ~ 48% 38% Steam turbine 39 ~ 41% base Efficiency :Net / Higher heating value 3
Significance of Osaki CoolGen Project Global Sustainable Development Efficiently use low cost coal for increased Power Demand Drastically reduce CO 2 emissions against Global Warming In Resources Importing Countries (as Japan) Coal is indispensable to achieve sustainable power supply Development of High Efficient Clean Coal Technology Osaki Coolgen Demonstration Project Oxygen-blown IGCC (Step-1) IGCC + CO 2 Capture (Step-2) IGFC + CO 2 Capture (Step-3) 4
Significance of Developing Oxygen-blown Type “EAGLE” Gasifier High efficiency and low carbonization of coal-fired power generation and effective utilization of coal and its byproduct Drastically to improve power generation efficiency and significantly to reduce carbon dioxide emission. Efficiently to capture CO 2 by pre-combustion method. To use low-grade coal(sub-bituminous coal and brown coal) and high- grade coal(bituminous coal) for gasification. To re-use coal ash and reduce in volume as slug of glass type Multi-purpose uses of coal gasification gas For the gasification gas to be widely used as synthetic fuels and chemical raw materials. 5
Feature of EAGLE Gasifier Oxygen-blown, Two-stage, Spiral-flow Gasifier Upper stage: Lean oxygen Coal → Char Char + CO 2 + H 2 O → CO + H 2 Upper stage burner CO H 2 Syngas CO,H 2 etc Oxygen Heat Recovery Section Pulverized coal H 2 O CO 2 Lower stage burner Low High Temperature Slag Lower stage: Lean oxygen Coal + O 2 → CO 2 + H 2 Gasification Section High-efficiency gasification Quench + Section Stable slag discharge Slag 6
Applicable Coal Types for “EAGLE” Gasifier EAGLE Gasifier PCF Power Plant EAGLE Gasifier Pulverizing Coal Fired 2.50 Previous Gasifier Conventional Gasifier Fixed carbon/Volatile matter [-] － 2.00 1.50 1.00 ： EAGLE Pilot Project Achievement ◆、◆： EAGLE Achievem evement ent Sub bituminous Coal area Bituminous Coal area Pilot Project ect 0.50 1150 1200 1250 1300 1350 1400 1450 1500 1550 1600 1650 1700 ℃ Ash Melting temperature [ ℃ ] Source : JPOWER EAGLE brochure 7
Table of Contents 1. Project Background 2. Progress of Osaki CoolGen Project (1) Outline of Osaki CoolGen Project (2) Progress of the Step 1 ‐ Demonstration of Oxygen-blown IGCC ‐ (3) Progress of the Step 2 ‐ Demonstration of IGCC with CO 2 capture ‐ 3. Challenges for Improving Flexibility 4. Goal of Osaki CoolGen Project 8
Outline of Osaki CoolGen Project Fiscal 2009 2010 2011 2012 2013 2014 2015 2016 2017 2018 2019 2020 2021 Environmental assessment Feasibility Feasibility Feasibility Feasibility study Study Study Study Step1 Demonstration Design, manufacturing, construction Oxygen-blown IGCC Step2 Design, manufacturing, Demonstr- ation construction IGCC with CO 2 capture unit Step3 Design, manufacturing, Demon- IGFC with CO 2 capture unit construction stration Step-1 Step-2 Gasifier Gas Clean-up CO 2 Transportation/storage ＊ CO 2 CO,H2 H 2 -rich gas *The project does not include CO 2 Coal Step-3 transportation and N 2 storage. O 2 Generator Fuel Cell ST GT Compressor ASU 9
Project Scheme METI (FY2012~2015) : Ministry of Economy, Trade and Industry NEDO(FY2016~ ) : New Energy and Industrial Technology Development Organization The Chugoku Electric Power Co., Inc. (Energia) Electric Power Development Co., Ltd. (J-POWER) Subsidy Joint Investment Osaki CoolGen Corporation 10
Table of Contents 1. Project Background 2. Progress of Osaki CoolGen Project (1) Outline of Osaki CoolGen Project (2) Progress of the Step 1 ‐ Demonstration of Oxygen-blown IGCC ‐ (3) Progress of the Step 2 ‐ Demonstration of IGCC with CO 2 capture ‐ 3. Challenges for Improving Flexibility 4. Goal of Osaki CoolGen Project 11
Oxygen-blown IGCC Process Flow (Step-1) Coal Coal gasification unit Gas clean-up unit COS: Carbonyl sulfide pretreatment; Syngas H 2 S: Hydrogen sulfide pulverized coal Cyclone Gasifier cooler blowing unit filter Sulfur Coal recovery unit Mill Hopper Air COS Acid First H 2 S Second H 2 S Gypsum converter regenerator gas absorber water water Char recycle furnace scrubber scrubber Slag O 2 N 2 Combined cycle unit Air separation unit Air DeNOx Compressor Rectifier HRSG Stack Water treatment unit Gas Steam Comp. G turbine Air turbine Condenser Waste water Treated water Cooling water Sludge Mitsubishi Hitach Power Systems, LTD JGC Corporation Diamond Engineering Co. Ltd. 12
Demonstration Targets and Results (Step1) Item Targets Results Net efficiency Net efficiency Plant efficiency Achieved 40.5% (HHV) 40.8% (HHV) SOx : 8ppm SOx : <8ppm Environmental NOx : 5ppm NOx : <5ppm Achieved Particulate : 3mg/m 3 N Particulate : <3mg/m 3 N performance (O 2 equivalent 16 %) (O 2 equivalent 16 %) Verified with a design coal Coal types Applicable to variety coal In progress compatibility Planning more kinds of coal Commercial-level annual plant Endurance test 5,119h(accumulated) Reliability availability of 70% or higher Continuous operation 2,168h (5,000 hours endurance test) Achieved Plant Commercial-level Load change rate controllability & Achieved ～ 10 %/min (load change rate of 1-3%/min) operability To obtain a prospect of the Under analyzing the demonstration data Economy equivalent or less generating Continue to analyze In progress cost with commercial PCF plant 13
Table of Contents 1. Project Background 2. Progress of Osaki CoolGen Project (1) Outline of Osaki CoolGen Project (2) Progress of the Step 1 ‐ Demonstration of Oxygen-blown IGCC ‐ (3) Progress of the Step 2 ‐ Demonstration of IGCC with CO 2 capture ‐ 3. Challenges for Improving Flexibility 4. Goal of Osaki CoolGen Project 14
Major Specifications (Step2) CO 2 Capture Test 17% slipstream syngas Feed Gas equivalent to 15% of total CO 2 volume CO shift Sweet Shift section (Downstream of AGR) CO 2 Physical solvent Capture (Selexol Max TM ) method Sour Shift Catalyst Pilot Test Sour Shift Feed Gas (Upstream of AGR) 15
Demonstration Test Targets (Step2) Item Targets CO 2 Capture rate *1 : 90% or more CO 2 capture performance CO 2 Purity : 99% or more To obtain a prospect of 40%(HHV) net efficiency while capturing Plant Efficiency 90% of CO 2 volume in newly-installed commercial-scale IGCC with 1,500 ° C class gas turbine To establish load-following operation procedures of CO 2 capture Operability plant in IGCC system To evaluate cost per amount of recovered CO 2 in the commercial- scale IGCC using cost target data shown in the “Development Economy Roadmap of CO2 Capture Technology” as a benchmark * 1. CO 2 Capture rate: (Amount of C in the captured CO 2 gas / Amount of C in the gas introduced in the CO 2 capture unit) × 100 16
Table of Contents 1. Project Background 2. Progress of Osaki CoolGen Project (1) Outline of Osaki CoolGen Project (2) Progress of the Step 1 ‐ Demonstration of Oxygen-blown IGCC ‐ (3) Progress of the Step 2 ‐ Demonstration of IGCC with CO 2 capture ‐ 3. Challenges for Improving Flexibility 4. Goal of Osaki CoolGen Project 17
Background of Challenges for Improving Flexibility Changes in social environment Thermal power plants are required output adjustability under the expansion of renewable energy The potential of oxygen-blown IGCC We have realized the further potential of operability in the oxygen-blown IGCC through the demonstration test Challenges for improving flexibility in oxygen-blown IGCC 18
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