INNOVATIVE SCR TECHNOLOGIES FOR VOC CO ODOR - …...SEMI –DUST SCR LAFARGE - MANNERSDORF 1st...
Transcript of INNOVATIVE SCR TECHNOLOGIES FOR VOC CO ODOR - …...SEMI –DUST SCR LAFARGE - MANNERSDORF 1st...
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INNOVATIVE SCR TECHNOLOGIES FOR
NOx – VOC – CO – ODOR - REDUCTION
APRIL 2016
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CONTENT
SCHEUCH COMPANY
SCR TECHNOLOGIES - BASICS
GERMAN EMISSION STANDARDS 17.BIMSCHV
AVAILABLE SCR TECHNOLOGIES
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CONTENT
SCHEUCH COMPANY
SCR TECHNOLOGIES - BASICS
GERMAN EMISSION STANDARDS 17.BIMSCHV
AVAILABLE SCR TECHNOLOGIES
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COMPANY DEVELOPMENT
Traditionally innovative
Tinsmith in Ried/Innkreis; 6 employees
2015
1963
WE ARE
TECHNOLOGY
FOR CLEAN AIR
2016Worldwide working specialist for
Ventilation and Environmental Technology
Headquatered in Aurolzmünster
780 employees
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Components Dust CollectorsEmission
abatementCooler
PRODUCT PORTFOLIO
• High-dust SCR system
• Semi-dust SCR system
• .
• .
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CONTENT
SCHEUCH COMPANY
SCR TECHNOLOGIES - BASICS
GERMAN EMISSION STANDARDS 17.BIMSCHV
AVAILABLE SCR TECHNOLOGIES
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NO - BASICS (SCR / SNCR)
Basic chemical reaction
4 NO + 4 NH3 + O2 4 N2 + 6 H2O
6 NO2 + 8 NH3 7 N2 + 12 H2O
A catalyzer reduces the activation energy !
Definitions:
SCR Selective Catalytic Reduction
SNCR Selectice Non Catalytic Reduction
X
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NO - BASICS (SCR / SNCR)
Basic chemical reaction
4 NO + 4 NH3 + O2 4 N2 + 6 H2O
6 NO2 + 8 NH3 7 N2 + 12 H2O
A catalyzer reduces the activation energy !
Definitions:
SCR Selective Catalytic Reduction
SNCR Selectice Non Catalytic Reduction
X
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NO - BASICS (SCR / SNCR)
Basic chemical reaction
4 NO + 4 NH3 + O2 4 N2 + 6 H2O
6 NO2 + 8 NH3 7 N2 + 12 H2O
A catalyzer reduces the activation energy !
Definitions:
SCR Selective Catalytic Reduction
SNCR Selectice Non Catalytic Reduction
X
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NO - BASICS (SCR / SNCR)
Where are SCR and SNCR installations in a cement kiln ?
X
raw mill
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NO - BASICS (SCR / SNCR)
Where are SCR and SNCR installations in a cement kiln ?
X
raw mill
SNCR
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NO - BASICS (SCR / SNCR)
Where are SCR and SNCR installations in a cement kiln ?
X
raw mill
SNCR
SCR (tail end)
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NO - BASICS (SCR / SNCR)
Where are SCR and SNCR installations in a cement kiln ?
X
raw mill
SNCR
SCR (tail end)
SCR (high dust)
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SNCRSelective Non Catalytic Reduction
Reaction Temperature
> 200°C < 400°C
Stoichiometry factor ≤ 1
Efficiency > 90%
Ammonia slip < 5 mg/Nm³ possible
NO - BASICS (SCR / SNCR)X
SCRSelective Catalytic Reduction
Reaction Temperature
900°C – 1.000°C
Stoichiometry factor 2 - 3Comment: part of NH3 can be oxidized:
4 NH3 + 5 O2 4 NO + 6 H2O
Efficiency up to 80% possible
Ammonia slip critical
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SNCRSelective Non Catalytic Reduction
Reaction Temperature
> 200°C < 400°C
Stoichiometry factor ≤ 1
Efficiency > 90%
Ammonia slip < 5 mg/Nm³ possible
NO - BASICS (SCR / SNCR)X
SCRSelective Catalytic Reduction
Reaction Temperature
900°C – 1.000°C
Stoichiometry factor 2 - 3Comment: part of NH3 can be oxidized:
4 NH3 + 5 O2 4 NO + 6 H2O
Efficiency up to 80% possible
Ammonia slip critical
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SNCRSelective Non Catalytic Reduction
Reaction Temperature
> 200°C < 400°C
Stoichiometry factor ≤ 1
Efficiency > 90%
Ammonia slip < 5 mg/Nm³ possible
NO - BASICS (SCR / SNCR)X
SCRSelective Catalytic Reduction
Reaction Temperature
900°C – 1.000°C
Stoichiometry factor 2 - 3Comment: part of NH3 can be oxidized:
4 NH3 + 5 O2 4 NO + 6 H2O
Efficiency up to 80% possible
Ammonia slip critical
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SNCRSelective Non Catalytic Reduction
Reaction Temperature
> 200°C < 400°C
Stoichiometry factor ≤ 1
Efficiency > 90%
Ammonia slip < 5 mg/Nm³ possible
NO - BASICS (SCR / SNCR)X
SCRSelective Catalytic Reduction
Reaction Temperature
900°C – 1.000°C
Stoichiometry factor 2 - 3Comment: part of NH3 can be oxidized:
4 NH3 + 5 O2 4 NO + 6 H2O
Efficiency 60% to 80% possible
Ammonia slip critical
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SNCRSelective Non Catalytic Reduction
Reaction Temperature
> 200°C < 400°C
Stoichiometry factor ≤ 1
Efficiency > 90%
Ammonia slip < 5 mg/Nm³ possible
NO - BASICS (SCR / SNCR)X
SCRSelective Catalytic Reduction
Reaction Temperature
900°C – 1.000°C
Stoichiometry factor 2 - 3Comment: part of NH3 can be oxidized:
4 NH3 + 5 O2 4 NO + 6 H2O
Efficiency 60% to 80% possible
Ammonia slip critical
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CONTENT
SCHEUCH COMPANY
SCR TECHNOLOGIES - BASICS
GERMAN EMISSION STANDARDS 17.BIMSCHV
AVAILABLE SCR TECHNOLOGIES
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Emission limits as per 17. BImSchV without special permits in [mg/Nm³]
GERMAN EMISSION STANDARDS 01/2019
Special permits for
cement plant possible ?
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Emission limits – REDUCTION – POSSIBILITES – PERFORMANCE DATA
STACK EMISSIONS
Stack emission values after a DeCONOX and an SCHEUCH EMC bagfilter
SOx Reduction with DeCONOx not possible – however a bagfilter provides some “desulphiration effects”
The SCR installation doesn´t change the Hg load – however a bagfilter influence the circle behavior
special permits for cement
plant possible ?
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CONTENT
SCHEUCH COMPANY
SCR TECHNOLOGIES - BASICS
GERMAN EMISSION STANDARDS 17.BIMSCHV
AVAILABLE SCR TECHNOLOGIES
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Low Dust -> versus High Dust Arrangement
LOW DUST (TAIL-END)
Tail-End SCR
• Installation after bagfilter
• Heat transfer system necessary
SCHEUCH –
A combination between a RTO
(Regnerative Thermal Oxidizer and a
low-dust SCR
HIGH DUST
AVAILABLE SCR - TECHNOLOGIES
„end – of –pipe“ arrangement „process – integrated“ arrangement
High-dust SCR
• Installation after preheater tower
(exposed to dust load)
Semi-dust SCR
Additional pre-separator (hot gas ESP)
reduces the inlet dust concentration
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LOW DUST (TAIL-END)
Tail-End SCR
• Installation after bagfilter
• Heat transfer system necessary
SCHEUCH –
A combination between a RTO
(Regnerative Thermal Oxidizer and a
low-dust SCR
HIGH DUST
AVAILABLE SCR - TECHNOLOGIES
„end – of –pipe“ arrangement „process – integrated“ arrangement
High-dust SCR
• Installation after preheater tower
(exposed to dust load)
Semi-dust SCR
Additional pre-separator (hot gas ESP)
reduces the inlet dust concentration
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LOW DUST (TAIL-END)
Tail-End SCR
• Installation after bagfilter
• Heat transfer system necessary
SCHEUCH –
A combination between a RTO
(Regnerative Thermal Oxidizer and a
low-dust SCR
HIGH DUST
AVAILABLE SCR - TECHNOLOGIES
„end – of –pipe“ arrangement „process – integrated“ arrangement
High-dust SCR
• Installation after preheater tower
(exposed to dust load)
Semi-dust SCR
Additional pre-separator (hot gas ESP)
reduces the inlet dust concentration
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LOW DUST (TAIL-END)
Tail-End SCR
• Installation after bagfilter
• Heat transfer system necessary
SCHEUCH –
A combination between a RTO
(Regnerative Thermal Oxidizer and a
low-dust SCR
HIGH DUST
AVAILABLE SCR - TECHNOLOGIES
„end – of –pipe“ arrangement „process – integrated“ arrangement
High-Dust SCR
• Installation after preheater tower
(exposed to dust load)
Semi-dust SCR
Additional pre-separator (hot gas ESP)
reduces the inlet dust concentration
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LOW DUST (TAIL-END)
Tail-End SCR
• Installation after bagfilter
• Heat transfer system necessary
SCHEUCH –
A combination between a RTO
(Regnerative Thermal Oxidizer and a
low-dust SCR
HIGH DUST
AVAILABLE SCR - TECHNOLOGIES
„end – of –pipe“ arrangement „process – integrated“ arrangement
High-Dust SCR
• Installation after preheater tower
(exposed to dust load)
Semi-Dust SCR
Additional pre-separator (hot gas ESP /
cyclone) reduces the inlet dust
concentration
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LOW DUST (TAIL-END)
Tail-End SCR
• Installation after bagfilter
• Heat transfer system necessary
SCHEUCH –
A combination between a RTO
(Regnerative Thermal Oxidizer and a
low-dust SCR
HIGH DUST
DESCRIPTION - SCR - TECHNOLOGIES
„end – of –pipe“ arrangement „process – integrated“ arrangement
High-dust SCR
• Installation after preheater tower
(exposed to dust load)
Semi-dust SCR
Additional pre-separator (hot gas ESP)
reduces the inlet dust concentration
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LOW DUST SCR “CLASSIC”
Typical integration of the SCR unit
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LOW DUST SCR “CLASSIC”
Cross –section of the SCR unit with heat-exchanger
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LOW DUST (TAIL-END)
Tail-End SCR
• Installation after bagfilter
• Heat transfer system necessary
SCHEUCH –
A combination between a RTO
(Regnerative Thermal Oxidizer and a
low-dust SCR
HIGH DUST
DESCRIPTION - SCR - TECHNOLOGIES
„end – of –pipe“ arrangement „process – integrated“ arrangement
High-dust SCR
• Installation after preheater tower
(exposed to dust load)
Semi-dust SCR
Additional pre-separator (hot gas ESP)
reduces the inlet dust concentration
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LOW DUST SCR
Typical integration of the SCR unit (=Kirchdorfer Zement Plant)
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LOW DUST SCR
1st DECONOX worldwide
at Kirchdorfer Zement - Austria
Design Data:
• 1100 t/d
• Flow: 151,000 Nm³/h
• Temp: 120°C – 220°C
• Dust: < 5 mg/Nm³
Target:
• < 200 mg/Nm³ NOx
• < 20 mg/Nm³ NH3
• < 10 mg/Nm³ VOC
• > 99% reduction of CO; max. 100 mg/Nm³
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LOW DUST SCR
Site Impressions DECONOX - Kirchdorfer Zement
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LOW DUST SCR
1st feedback since plant start end of 08/2015
• successful Start – Up
• DeCONOx now in permanent operation
• CO and VOC reduction > 99%
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LOW DUST SCR
1st feedback since plant start end of 08/2015
• successful Start – Up
• DeCONOx now in permanent operation
• CO and VOC reduction > 99%
• DeCONOx operates autotherm
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LOW DUST (TAIL-END)
Tail-End SCR
• Installation after bagfilter
• Heat transfer system necessary
SCHEUCH –
A combination between a RTO
(Regnerative Thermal Oxidizer and a
low-dust SCR
HIGH DUST
DESCRIPTION - SCR - TECHNOLOGIES
„end – of –pipe“ arrangement „process – integrated“ arrangement
High-dust SCR
• Installation after preheater tower
(exposed to dust load)
Semi-dust SCR
Additional pre-separator (hot gas ESP)
reduces the inlet dust concentration
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HIGH DUST SCR
Typical integration of the High Dust - SCR unit
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HIGH DUST SCR
CAT cleaning with soot blowers
Typical arrangement of the High Dust - SCR unit
LEVEL 1
LEVEL 2
LEVEL 3 (spare layer)
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LOW DUST (TAIL-END)
Tail-End SCR
• Installation after bagfilter
• Heat transfer system necessary
SCHEUCH –
A combination between a RTO
(Regnerative Thermal Oxidizer and a
low-dust SCR
HIGH DUST
DESCRIPTION - SCR - TECHNOLOGIES
„end – of –pipe“ arrangement „process – integrated“ arrangement
High-dust SCR
• Installation after preheater tower
(exposed to dust load)
Semi-Dust SCR
Additional pre-separator (hot gas ESP /
cyclone) reduces the inlet dust
concentration
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SEMI - DUST SCR
Typical integration of the SCR unit
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SEMI – DUST SCR LAFARGE - MANNERSDORF
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Design Data:
• 2500 t/d
• Flow: 180,000 Nm³/h
• Temp: 290°C – 350°C
• Dust: 180 g/Nm³ (before ESP)
< 2 g/Nm³ (after ESP)
Concept:
ESP instead of cyclone-upgrade (idea to adjust SCR inlet dust concentration for test –
purpose to receive design data for other Lafarge plants)
Target:
• < 200 mg/Nm³ NOx (at the main stack)
• < 20 mg/Nm³ NH3
SEMI – DUST SCR LAFARGE - MANNERSDORF
1st SEMI-DUST SCR worldwide
at Lafarge Mannersdorf - Austria
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Project Targets
837
273
158
235
212
25 13 8
0
100
200
300
400
500
600
700
800
900
NOx VOC NH3
con
c. [
mg/
Nm
³]
TÜV measuring campain June 2012
NOx [mg/Nm³]
NH3 [mg/Nm³]
VOC [mg/Nm³]
catalyst outletafter 1st layer
SEMI – DUST SCR LAFARGE - MANNERSDORF
Results: emission measurment June -2012
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WWW.SCHEUCH.COM
März 2015