idea campus energy conference

8/16/2019 IDEA Campus Energy Conference

1/30

Page 1 Feb 2011 IDEA Campus Conference Feb 21-25 Miami FL Energy SectorCopyright © Siemens Industrial Turbomachinery Ltd 2010. All rights reserved.

© Siemens Industrial Turbomachinery Ltd. No part of this document may be reproduced or transmitted in any form or byany means, including photocopying and recording without the written permission of Siemens Industrial Turbomachinery Ltd

Improved operation of the Siemens SGT-300 at

the University of New Hampshire:

Fuel Flexibility and Emissions ComplianceBrian M IgoeProduct Manager SGT-300Siemens Industrial Turbomachinery LtdLincolnUK


2/30


Disclaimer

This document contains forward-looking statements and information - that is, statements related to future, notpast, events. These statements may be identified either orally or in writing by words such as "expects","anticipates", "intends", "plans", "believes", "seeks", "estimates", "will" or words of similar meaning. Suchstatements are based on our current expectations and certain assumptions, and are, therefore, subject tocertain risks and uncertainties. A variety of factors, many of which are beyond Siemens' control, affect itsoperations, performance, business strategy and results and could cause the actual results, performance orachievements of Siemens worldwide to be materially different from any future results, performance orachievements that may be expressed or implied by such forward-looking statements. For us, particularuncertainties arise, among others, from changes in general economic and business conditions, changes incurrency exchange rates and interest rates, introduction of competing products or technologies by othercompanies, lack of acceptance of new products or services by customers targeted by Siemens worldwide,changes in business strategy and various other factors. More detailed information about certain of these factorsis contained in Siemens' filings with the SEC, which are available on the Siemens website, www.siemens.com and on the SEC's website, www.sec.gov . Should one or more of these risks or uncertainties materialize, orshould underlying assumptions prove incorrect, actual results may vary materially from those described in therelevant forward-looking statement as anticipated, believed, estimated, expected, intended, planned orprojected. Siemens does not intend or assume any obligation to update or revise these forward-lookingstatements in light of developments which differ from those anticipated.

Trademarks mentioned in this document are the property of Siemens AG, its affiliates or their respectiveowners.

http://www.siemens.com/http://www.sec.gov/http://www.sec.gov/http://www.siemens.com/


3/30


Agenda

AbstractIntroduction

Industrial Power Gas Turbine PortfolioGas Turbine Cross Section

Background

From Landfill to CampusPower Island - University of New HampshireOff-shore Application – Weak Wellhead Gas FuelCombustion Rig development Facilities

Dry Low Emissions Combustion SystemIntelligent Control System

Fuel SystemFuel ScheduleControl Parameters

ResultsSummary


4/30


ABSTRACT

University of New Hampshire operate a Siemens SGT-300 turbine in a co-generationapplication on a wide range of fuels, achieving low atmospheric pollution.

Adaptation of DLE combustion configuration:Wide fuel variation

100% natural gas

100% processed landfill gasDistillate fuelLow emissions to atmosphere

Across fuel variation range“Active” pilot fuel management Presentation topics:Fuel capability

“Active” pilot control Results

Proven tri-fuel gas turbine operation capability achieving reliable operation with low exhaust pollution recognised as an example of good environmental practice.


5/30


Introduction

There has been much publicity with regard to the University of NewHampshire and the use of landfill gas in the gas turbine prime movers atthe heart of the energy centre.

The purpose of today’s presentation is to demonstrate how the Siemen’sSGT-300 gas turbine was equipped to operate on the much reducedcalorific value fuel compared to natural gas, at the same time ofachieving compliance with both local and national environmentalstandards.

Ensuring the gas turbine operates stably and reliably on natural gas,process landfill gas and distillate fuel has resulted in power and steamproduction from a renewable source.

How was this achieved …


6/30


From Landfill to Gas TurbineProcessed Landfill Gas


7/30Page 7 Feb 2011 IDEA Campus Conference Feb 21-25 Miami FL Energy SectorCopyright © Siemens Industrial Turbomachinery Ltd 2010. All rights reserved.

Industrial Power:

Portfolio Overview

Gas Turbines

Type

SGT-100

SGT-200

SGT-300

SGT-400

SGT-500

SGT-600

SGT-700

SGT-800

Power Output (MW e)

5

7

8

18

25

31

47

25 500 5 10 15 20 30 35 40 45

13



SGT-300 Core Engine Cross Section

Compressor

Dry Low EmissionsCombustion

Compressor turbine

Exhaust


9/30



BackgroundOff-shore Application using depleted well gas fuel

2001 contract awarded to supply 3 GT’s for an off -shore applicationWeak wellhead gas fuelFuel contained high inert species, nitrogen, N 2 and

carbon dioxide, CO 2 (combined 18 – 20%vol)Temperature Corrected Wobbe Index (TCWI) of32-34MJ/Nm 3

High Pressure Combustion Rig testing completed

Confirmed the standard dry low emissionscombustion system would operate with these fuel

without any operational concerns

This provided the basis to support the University of NewHampshire’s request to use landfill gas as the main fuelsource for the energy centre’s main power generation.



Research and Development Facilities

High Pressure Combustion Rigs Allows combustion testing at full enginetemperature and pressureFacility covers full product range

Gas Fuel Mixing Facility Ability to mix fuels to meet full WI rangeRange 15 – 65+MJ/Nm 3 WI

Alternative liquidfuel storage

CO2 & N2Storage

H2 & COcontainers

Butane/PropaneStorage vessel


12/30Page 12 Feb 2011 IDEA Campus Conference Feb 21-25 Miami FL Energy Sector

Copyright © Siemens Industrial Turbomachinery Ltd 2010. All rights reserved.

20 40 50 6030Wobbe Index (MJ/Nm³)

SITL Definition

37 49 65

Standard burner configurationPlanedExtension

MCV

SGT-300-1S Medium Cv Fuel Capability - DLE

Medium Calorific Value (MCV)‘’Normal’’

Pipeline NG High Calorific Value (HCV)

VerifiedExtensionStd burner

Wobbe Index = LHV / √(SG)




Dry Low Emissions Combustion System

Lean pre-mix combustion aimed at achieving low level of exhaustpollution to atmosphere:Generic design across product rangeSimple combustion systemRobust with no moving parts

Fuel control by external fuel control valves (pilot and main)Extensive operation - many millions of hours

Developed in the early/mid 1990’s and enhanced over recent years tooperate over wider ranges of fuels:

Includes medium Calorific Value fuelsContaining high levels of inert speciesRecognise potential contamination limits




DLE Lean Pre-mix Combustion

Main Burner

Pilot Burner

Igniter

SGT300SGT200

SGT400

SGT100

Double SkinImpingementCooled Combustor




DLE Lean Pre-mix Combustor

Low temperature in primary zone

Reduced Cooling and

Dilution by using same airfor both duties

Local Max Temp 1870 - 1910 K

50 - 70%Primary Air

Flow

Pilot GasInjection

Air

Main GasInjection

Igniter

Gas/AirMix

Air Gas

PilotBurner

Igniter

Main Burner

Liquid

Core

RadialSwirler

Double SkinImpingement

Cooled Combustor

Pre Chamber




Fuel System

Fuel delivery to GT:Pilot

Ignition and pull awayMinimum flow at high loads for stability

MainPre-mixed fuelHomogeneous mixture; achieves low emissions

Fuel SystemFilter & block ValveProfiled flow control valveRobust actuatorGood response and feedbackFine control enabled




Fuel System

Fuel Schedule and controlPredefined, with little variabilityConservative, little account made of siteconditions and fuels

Improved Fuel control Automatic adjustments of pilotschedule:

minimise combustion dynamicsControls burner tip temperature (high)under both steady state and transientoperation)

Increased reliability achievedreduced trips associated with lowfrequency combustion dynamics and tiptemperature excursions

Typical Pilot Fuel Schedule

Combustion Dynamics

High Burner TipTemperature


18/30


What is Intelligent Fuel Control

… a control algorithm that automatically adjusts the pilot fuel flow split(within predefined limits)

… offers a means to reduce high levels of low frequency combustiondynamics or high burner tip temperatures during both transient andsteady state running

…helps improve running reliability at part load operating conditions byreducing the number of trips related to combustion dynamics or hightip temperatures

… compensates for fluctuations in ambient conditions and fuelcomposition

… minimises NOx emissions


19/30


Intelligent Fuel Control

High Extinction Dynamics(Flameout)

Load

P i l o

t s p

l i t

High Burner Tip Temperatures

Control of fuel schedulecontrol required to ensure bothcombustion dynamics and componenttemperatures managedneed to control to lowest acceptablepilot to achieve best emissionssignature (NOx emissions)

wide variation in fuel composition


20/30


UNHIntelligent fuel control

Use of monitored and recorded turbineoperating parameters to provide controland feedbackControl of pilot fuel schedule to achievelow emissions without introducing issuesIntroduced Autumn 2009, andcontinually monitoredSite engine commissioned:

Fuel control WI set-point 32MJ/m3Tested to


21/30


Impact of Fuel on Wobbe Index and EmissionsActive Control of Pilot Fuel Schedule


22/30


Benefit of Intelligent Control of Fuel Schedule

ResultsData recorded from same months 1 year apart2009 as originally installed fuel schedule2010 with intelligent control appliedSignificant lowering of NOx emissions (histogramdoes not resolve to actual load regime)


23/30


Site Data: 26 th Jan 2011

Blend Station:90.2% PLG in blend

PLG flow-rate: 2050scfm GT Output:7923kw

Emissions:NOx 13.5ppm corr to

15% O2


24/30


Operation

Commissioned on Processed Landfill gas (PLG) April 2008Continued to operate on PLG blend with shorter periods of distillateoperation, usually when quality of PLG has been compromised (forexample, upset condition at processing plant).

Intelligent control of fuel schedule commissioned Oct 2009 and hasshown significant improvement in exhaust emissions, with periods ofvery low,


25/30


Summary and Conclusion

Full advantage taken of widened fuels range of the SGT-300 gt standardDLE combustion system

The SGT-300 gas turbine operated by UNH has proven tri-fuel capability,in that it can operate with:

Processed Landfill GasNatural GasDistillate Fuel

Low levels of atmospheric pollution achievedUsing control of compressor VGV for part load

Applying intelligent control of fuel pilot schedule

Recognised as an application of good environmental practice andachievement.


26/30


Any Questions ?


27/30


Our values

Our Values – for a global business

Committed to ethical and responsible actionsResponsible

Achieving high performance andexcellent resultsExcellent

Being innovative to create sustainable valueInnovative

Highest performance meets highest ethical standards


28/30


Prevent…

… through clear rules, trainingprograms, communication andclear responsibilities

Detect…

… compliance violationsthrough audits, reviews andmonitoring

Act…

Compliance is the top priority

… with rigorous andappropriate measures in casesof compliance violations

Uniform, seamless and mutually complementary legal, compliance and auditprocesses worldwide

Compliance must be part of our company culture and firmly anchored in allbusiness processes

Unlimited commitment to integrity and responsible action

A business based on the highest ethical principles – at all times andeverywhere in the world


29/30


" I have made the topic of compliance one of my top

priorities.

There will be no compromises here: Illegal and improper

behavior will not be tolerated under any circumstances."

(Peter Löscher, President and CEO of Siemens AG)


30/30


Thank you for your attention!

Please address all correspondence to:

Siemens Industrial Turbomachinery LtdRuston HouseP O Box 1Waterside SouthLincoln LN5 7FDEngland

© Siemens Industrial Turbomachinery Ltd. No part of thisdocument may be reproduced or transmitted in any form or byany means, including photocopying and recording without thewritten permission of Siemens Industrial Turbomachinery Ltd

idea campus energy conference

Documents