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Sulzer Chemtech Sulzer Chemtech – Moving Ahead Static mixers for flue gas treatment applications S. Hirschberg | 2011

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Page 1: Sulzer Chemtech – Moving Ahead - … Chemtech Sulzer Chemtech – Moving Ahead Static mixers for flue gas treatment applications S. Hirschberg | 2011Published in: Journal of Management

Sulzer Chemtech

Sulzer Chemtech – Moving Ahead

Static mixers for flue gas treatment applications

S. Hirschberg | 2011

Page 2: Sulzer Chemtech – Moving Ahead - … Chemtech Sulzer Chemtech – Moving Ahead Static mixers for flue gas treatment applications S. Hirschberg | 2011Published in: Journal of Management

Gas mixing | 2011 | slide 2

Sulzer ChemtechSulzer Chemtech: Leading in static mixing technology

� More then 50 applied patents

� More then 40 years experience

� More then 100’000 references worldwide

1970 Invention of Static Mixing Technology

(SMV-Mixer)

2006 First EPS-

production plant

1980 Introduction

of SMX 1985 First

SMR Reactor1995 CFD-simulation

1990 First PS-

production plant

2002 First

CompaX

2004 First

Contour

2009 Introduction

of SMX plus

2008 First sold

PLA production

plant

2007 Introduction

Optifoam Extrusion

Page 3: Sulzer Chemtech – Moving Ahead - … Chemtech Sulzer Chemtech – Moving Ahead Static mixers for flue gas treatment applications S. Hirschberg | 2011Published in: Journal of Management

Gas mixing | 2011 | slide 3

Sulzer ChemtechWith Sulzer static mixing technology, you can …

� Increase NOx conversion of your SCR system

� Optimize the amount of catalyst necessary

� Reduce ammonia slip

� Achieve good DeNOx performance at all loads

� Homogenize temperature (hot bypass stream, filters, stack, …)

� Reduce operation expenses

� Increase catalyst life time

� Enhance filter efficiency

� Reduce service work

Dust homogenization with Sulzer SMVTM mixers

Temperature homogenization withSulzer static mixers

Physical flow model withSulzer ContourTM mixers

Page 4: Sulzer Chemtech – Moving Ahead - … Chemtech Sulzer Chemtech – Moving Ahead Static mixers for flue gas treatment applications S. Hirschberg | 2011Published in: Journal of Management

Gas mixing | 2011 | slide 4

Sulzer ChemtechSulzer products and services

� Static mixers for different installation sizes

� Round ducts: Sulzer CompaXTM, Sulzer SMITM, Sulzer SMVTM

� Rectangular ducts: Sulzer ContourTM, Sulzer SMVTM

� Ammonia Injection grids optimized for the static mixer to be used

� Wear protection coating for mixers and duct internals for operation withdifficult dust

� CFD analysis and optimization of duct with AIG, mixers, turning vanes, flow rectifiers is part of the solution provided

� Physical flow modeling

� Development of static mixer configurations for equalization of dustdistribution over the catalyst surface using CFD

� For increase of catalyst life time

� For prevention of fine dust clogging parts of the catalyst

� General analysis of large gas ducts for potential of pressure drop reductions as a service

� Performance guarantees

Page 5: Sulzer Chemtech – Moving Ahead - … Chemtech Sulzer Chemtech – Moving Ahead Static mixers for flue gas treatment applications S. Hirschberg | 2011Published in: Journal of Management

Gas mixing | 2011 | slide 5

Sulzer Chemtech

Applications of static mixing technology in thermal

power stations

Coal millFresh air

for burning

load

(electricity, heat)

Filter

Fly ash

LUVO

SCR

Catalyst

Water,

Limestone Gypsum

Sketch of a flue gas cleaning system with high dust SCR

Sulzer Mixer

Sulzer Mixerand Ammonia

injection

Sulzer Mixerfor heating

with hot air

Page 6: Sulzer Chemtech – Moving Ahead - … Chemtech Sulzer Chemtech – Moving Ahead Static mixers for flue gas treatment applications S. Hirschberg | 2011Published in: Journal of Management

Gas mixing | 2011 | slide 6

Sulzer ChemtechSulzer CompaXTM Mixer

� Ideal for dosing of small additiv streams intoturbulent main streams for round ducts

� Optimized geometry

� Works well for all mixing ratios between 1:10 down to 1:100000 and below

� No separate ammonia injection grid (AIG) necessary

� Homogeneous distribution after 3-5 diameters of the tube

� Low pressure drop

0.02

0.025

0.03

0.035

0.04

0.045

0.05

0 20000 40000 60000 80000 100000

Reynolds number [-]

Mix

ing

qu

ali

ty C

oV

[-]

Q/q=10000

Q/q=1000

Q/q=100

Measurement plane at L/D=5

Resultats of experiments performed by BHR

Page 7: Sulzer Chemtech – Moving Ahead - … Chemtech Sulzer Chemtech – Moving Ahead Static mixers for flue gas treatment applications S. Hirschberg | 2011Published in: Journal of Management

Gas mixing | 2011 | slide 7

Sulzer ChemtechSulzer SMITM Mixer

� Intense mixing of streams down to homogeneities below 1% RMS if needed

� Admixing of small additive streams

� Simple oprtimized ammonia injectionlance

� Very good homogeneity 5 – 8 tubediameters downstream of the mixer inlet

� Low surface area, widely open flow cross sections

� Low pressure drop

Page 8: Sulzer Chemtech – Moving Ahead - … Chemtech Sulzer Chemtech – Moving Ahead Static mixers for flue gas treatment applications S. Hirschberg | 2011Published in: Journal of Management

Gas mixing | 2011 | slide 8

Sulzer ChemtechSulzer SMVTM gas mixer

� Proven mixer technology

� Used in first large DeNOx applicationsrealized in Germany in the 1980‘s. Manyrecent US references

� Compact design

� Very short mixing length possible withspecially adapted ammonia injection grid(AIG)

� Mixing process already starts within themixer

� Low pressure drop

� Standard design includes 2 mixers

� Well suited for dust distribution

� Erosion protection by coating critical partsof the mixer as an option

Page 9: Sulzer Chemtech – Moving Ahead - … Chemtech Sulzer Chemtech – Moving Ahead Static mixers for flue gas treatment applications S. Hirschberg | 2011Published in: Journal of Management

Gas mixing | 2011 | slide 9

Sulzer ChemtechSulzer ContourTM mixer

� New mixer with optimized streamlineddesign (no flow detachment)

� Extremely low pressure drop

� Very good homogeneity possible (below1% RMS if required)

� Very short mixing length possible

� Cross flow mixing over large distances

� Customizable to the mixing problem at hand

� Ideal for applications both with liquid atomized NH4OH or vaporized dosing

� Erosion protection through coating as an option

� Low weight

� On site assembly from a number of compact parts for installation in existingflue gas ducts

Page 10: Sulzer Chemtech – Moving Ahead - … Chemtech Sulzer Chemtech – Moving Ahead Static mixers for flue gas treatment applications S. Hirschberg | 2011Published in: Journal of Management

Gas mixing | 2011 | slide 10

Sulzer ChemtechErosion protection coating

� Thermal spray coating

� Arc wire based coating process

� General coating properties:

� hard

� ductile

� good adhesion to substrate

� Properties of coating developed for this

application

� Hardness > 850 [HV 0,3]

� Operating temperatures > 550°C

� Coating can be applied in the

workshop (mostly automated) or on

site

� Significantly increased service life time

for coated surfaces even in severely

abrasive environments

Page 11: Sulzer Chemtech – Moving Ahead - … Chemtech Sulzer Chemtech – Moving Ahead Static mixers for flue gas treatment applications S. Hirschberg | 2011Published in: Journal of Management

Gas mixing | 2011 | slide 11

Sulzer ChemtechReferences