new generation nid for pc market

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Next Generation NIDfor PC Market

Lawrence Gatton

Principal Engineer

Alstom Power ECS



©ALSTOM 2011. All rights reserved. Information contained in this document is provided without liability for information purposes only and is subject to change without notice. No representation or warranty isgiven or to be implied as to the completeness of information or fitness for any particular purpose. Reproduction, use or disclosure to third parties, without express written authority, is strictly prohibited.

Agenda

Overview - FGD Technology

NID Technology Overview

NID History and Reference Units

PC NID Applications

Current US PC-NID Projects




FGD Technology Comparison

Alstom FGD Technologies - J an 2010

Technology OST SDA NID

Design WFGD DFGD

Absorber Spray Tower Spray Dryer J -Reactor

Reagent Limestone Lime Lime

Reagent Preparation Wet Ball Mill Detention Slaker Integrated Hydrator

Byproduct Gypsum CaSO3/CaSO4/Ash CaSO3/CaSO4/Ash

Dewatering Hydroclone/Belt Filter N/A N/A

Performance

Stoichiometric Ratio 1.02-1.03 1.5-1.8 1.5-1.8

Approach Temperature 0 ºF 30 ºF 25 ºF

L/G 90-175 gal/kacf 0.03 gal/kacf 0.03 gal/kacf

Pressure Drop 3-9 in. w.g. 11-13 in. w.g. 13-15 in. w.g.

SO2 Removal Eff. 99+% 95% 98%

SO2 Inlet (max) >10 lb/MMBtu 2-3 lb/MMBtu 5-6 lb/MMBtu




FGD Technology Comparison


300 ºF SDA NID

125 ºF

WFGD

25 ºF30 ºF




Agenda




PC NID Applications





NID – Mixer/Hydrator

Ca(OH)2

HF

HClSO2

SO3

HF SO3

HClSO2

1 - 2 Monolayers

D50: ~ 5 μ





NID – Water Spray System





DFGD Systems: Two Approaches

SDA NID





Key ComponentsFabric filterReactorRecycle Feeder

MixerHydratorFluid trough

Reactor

Fabric Filter

Fluid Trough

LimeHydrator

Mixer

RecycleFeeder

NID Components




Agenda




PC NID Applications





Modularized PC-NID

• Multiple modules

• Nominal 45 - 90 MW size ea

• Can be designed to achieve

emissions guarantees at full loadwith one module out of service




PC-NID Advantages

• Low Load Turndown- Achieved through Module isolation w/o gas recirculation- Ability to start SO2 removal with first introduction of coal

• Capacity- Single system capacities > 800 MW

• Multi-Pollutant Control- SO2 – up to 98% Removal w/ 5.0 lb SO2/MBtu Inlet- HCl, HF , SO3 – < 1 ppmemissions

- Filterable Particulate – < 0.010 lb/MBtu- Hg – High PAC utilization




Modular NID Arrangement




Modular NID Arrangement – Foot Print

300 ft

140 ft

100 ft

600 MW Nominal SDA/FF

2 x 60 ft SDA Vessels

1 x 200 ft Fabric Filter





300 ft

140 ft

100 ft

165 ft

110 ft

600 MW Nominal NID/FF

8 x 4 m NID Modules

Includes 8 Compartment Fabric Filter




Agenda




PC NID Applications





NID Development Time Line

• University of Tennessee, MDI Pilot Plant – 1987

• TVA Shawnee, MDI Test Facility - 1993

• Vaxjo, Sweden, NID Pilot Plant – 1996

• Laziska, Poland, NID Commercial Operation - 1996

• Windsor, CT, Alstom-PPL CFB-NID Pilot - 2002

• Reliant, Seward, 1st US NID Commercial Operation – 2004

• Windsor, CT, Alstom-PPL PC-NID Pilot – 2009

• Millsboro, Delaware, 1st U.S. PC NID – Startup Fall 2011

• Somerset, Massachusetts, PC-NID – Erection during 2011/12




TVA Shawnee – MDI Test Facility (1993)




NID Pilot Plant – Växjö, Sweden

NID PilotPlant




NID Pilot PlantPower Plants Labs, Windsor, CT (2009)

BSF – Boiler Simulation Facility - 15 MW(Thermal) Pilot




World-Wide NID Installations

Zhejiang 8 70 MWDong Guan 5&6 2x70 MWBinjiang TPP 13 MW

J iangying TPP 70 MW J iulong Paper 135 MWBautou 2 200 MWHua Ying Shan 100 MWXinyuan TPP 25 MW

J ingmenTPP 2x200 MWLiwen Paper 1&2 2x30 MWSanfangxiang 2x25 MWShengyang 2x50 MWWuxi TPP 25 MWXinwang 1&2 2x135 MWZibo 7&8 2x100 MWHeibi TPP 2x135 MW

J uhong TPP 135 MW Taizhou6 135 MW Yima TPP 78 MWShenhai 200 MW

Laziska 1&2 2x120 MW

Vaasa 37 MWSandreuth 3 53 MW

Fifoots 1-3 3x125 MW

Mai Liao 2x150 MW

Elektranai8 150 MW

Seward 1&2 2x285 MWGilbert 3 300 MWSpurlock 4 300 MWIndian River 4 440 MWBrayton Point 3 630 MW

Mondi 1&2 2x35 MW Mindinao 1&2 2x105 MW

Kohlta J arve 50 MW

Secunda 120 MW

Zilina 260 MW





Alstom NID – Product Presentation - May 2011

First Commercial NID System

Elektrownia Power - Laziska Power Plant, Units 1 & 2

Location: Laziska, Poland

Application: PC Boiler

Fuel : Coal – 1.4%

Inlet Loading: 1400 ppm

Gas Flow: 510,000 ACFM

Commercial: Unit 1,1996, Unit 2,1997

SO2: 95% Removal Measured

Opacity: Less than 20%

Unit size: 2 x 125 MWReagent: Lime

Byproduct: Landfill




First US NID Application

Reliant Energy – Seward StationLocation: Seward, PA

Application: CFB Boiler

Unit size: 2 x 260 MW

Scope: Material supply

Fuel : Waste Coal / 10.0 lb SO2/MBtu

Gas Flow: 880,000 acfm

Commercial: 2004

Emissions:

SO2: 95% removal (Total System)

Particulate: 0.015 lb/MMBtu




Agenda




PC NID Applications





NRG – Indian River Unit 4

Location: Millsboro, DE


Unit size: 440 MW


Fuel : Bituminous coal

Inlet Loading: 4.5 lb SO2/MMBtu

Gas Flow: 2,300,000 acfm

Commercial: December 2011

Emissions:

SO2: 96% RemovalParticulate: 0.012 lb/MMBtu




Dominion/Kiewit – Brayton Point Unit 3

Location: Somerset, MA


Unit size: 630 MW


Fuel : Bituminous coal

Inlet Loading: 2.5 lb SO2/MMBtu

Gas Flow: 2,400,000 acfm

Commercial: February 2014

Emissions:

SO2: 98% removalParticulate: 0.010 lb/MMBtu




Dominion/Kiewit – Brayton Point Unit 3



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