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Precision Spray Nozzles & Control Skid Precision Spray Nozzles & Control Skid for SNCR Systemfor SNCR System
Precision Spray Nozzles & Control Skid Precision Spray Nozzles & Control Skid for SNCR Systemfor SNCR System
Up-todate Facility with CNC technologySpray Test Laboratory
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Current Scenario of NOx Emissions
7 % 15 %
Nox Source Contribution
Sources such as boilers, incinerators, and gas turbines all Sources such as boilers, incinerators, and gas turbines all create NOx.create NOx.
Electric Electric power plant boilers produce about 40% of the power plant boilers produce about 40% of the NOxNOxemissions from stationary sources.emissions from stationary sources.
Industrial Industrial boilers, incinerators, gas turbines, reciprocating boilers, incinerators, gas turbines, reciprocating spark ignition and Diesel engines in stationary sources, iron spark ignition and Diesel engines in stationary sources, iron and steel mills, cement manufacture, glass manufacture, and steel mills, cement manufacture, glass manufacture, petroleum refineries, and petroleum refineries, and nitric acid manufacture: 60%.nitric acid manufacture: 60%.
The major source of The major source of NONOxx production from nitrogenproduction from nitrogen--bearing bearing fuels such as certain coals (mainly fuels such as certain coals (mainly petcokepetcoke) and oil. Fuel ) and oil. Fuel NONOxx can contribute as much as 50% of total emissions when can contribute as much as 50% of total emissions when combusting oil , and as much as 80% when combusting coal.combusting oil , and as much as 80% when combusting coal.
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Statistical Game
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Theoretically, it is a stoichiometric equation. The ideal case, where every parameteris stable and predictable. Unfortunately, It is not so in a real case. Changing gasvolumes, changing pressure values, changing temperature values, changing gascompositions, changing flow behavior etc.. Is inevitable.The system which adaptsitself faster to the changing conditions, is the most efficient one.
Hence, You need to hit the right NO molecule at the right place and in rightenvironment conducive for reaction, with minimum reagent consumption.
Lechler has predictive mechanisms and actuators, to ensure the probability ofhitting the right NO molecule, at right time and ambience.Lechler has knowledge and measurement of droplet size generation, for maximumsurface area creation for reaction, actuators to change the droplet size whenrequired, high turndown ratio of the special spray nozzles to cater to low and highflows of reagent, as per needs and while maintaining allowed NH3 slip values..It is a tight balancing act.
UREA-Reaction
Ammonia Water - Reaction
SNCR Process
UREA versus UREA versus AmmoniaAmmoniaUREA versus UREA versus AmmoniaAmmonia
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4 NH3 + 4 NO + O2 4 N2 + 6 H2O
2 CH4N2O + 4 NO + O2 4 N2 + 4 H2O + 2CO2
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UREA-Injection
Ammonia Water - Injection
H2O
NH2 CO NH2
NH2
NH2
CO
H2O
NH3
Advantage:• Evaporation of water is essential
to dispose UREA and NOx.• Benefitial for injection in high
temperatures above 1.050° C. • Easier safety regulations
(Non explosive)• Available all over the world
due to Add Blue TechniqueDisadvantage:•Risk of clogging
SNCR Process
UREA versus UREA versus AmmoniaAmmoniaUREA versus UREA versus AmmoniaAmmonia
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Advantage:• Quick Residual free action • No mixing station necessary• Virtually all Lechler projects withskids have been made with ammonia
Disadvantage:•Ammonia Vapours are explosive
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Control Technology for High efficiency SNCR
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O2
T NOxO2
TgasP NOxNH3
PH Fan
Kiln
ChimneyCyclone
Flue Gas Flow, Riser DuctSome typical Actuators
Storage Storage NHNH44OHOH
Injection PumpsInjection Pumps INJECTIONINJECTION
PID PID RegulationRegulation
NONOx x NONOxx Setpoint at Setpoint at Control PanlelControl Panlel
Waste GasWaste Gas
CLEANINGCLEANING
SNCR System
System LayoutSystem LayoutSystem LayoutSystem Layout
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Skid and Nozzle lances for SNCR System
System Layout / Scope of SupplySystem Layout / Scope of SupplySystem Layout / Scope of SupplySystem Layout / Scope of Supply
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Ammonia Ammonia Unloading / Unloading /
StorageStorage
ProcessProcessControl Control SystemSystem
Utilities (Media / Air)Utilities (Media / Air)(By Customer)(By Customer)
Safety PrecautionsSafety Precautions(By Customer)(By Customer)Pumping UnitPumping Unit
Distribution Distribution SkidSkid
Distribution Distribution SkidSkid
Nozzle LanceNozzle Lance
Precision Spray Nozzles for SNCR System
Innovative system control Innovative system control possibilitiespossibilitiesInnovative system control Innovative system control possibilitiespossibilitiesBased on individual Based on individual control of each control of each lance/nozzle every lance/nozzle every single point within the single point within the process window can be process window can be adjusted and controlled adjusted and controlled
This leads to:This leads to:•• High flexibilityHigh flexibility
•• Cost reduction Cost reduction possibilitiespossibilities
•• the right droplet at the the right droplet at the right time (for the right time (for the correct conditions)correct conditions)
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Precision Spray nozzle Lances
Precision Spray nozzle Precision Spray nozzle Lances for SNCRLances for SNCRPrecision Spray nozzle Precision Spray nozzle Lances for SNCRLances for SNCR
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SNCR System
Nozzle LancesNozzle LancesNozzle LancesNozzle Lances
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ammonia atomizing air barrier air
Products
Lechler Laval Lechler Laval NozzlesNozzlesLechler Laval Lechler Laval NozzlesNozzles
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Air- and water amount are individually controllable
The design is especially made for the use within cementplants – clogging resistant
Laval nozzles are known for fine droplets due to ultrasonic flows
Due to high outlet velocities a higher penetration depthcan be achieved
Internal mxing nozzle will allow the adjustment of nearlyany droplet size
SNCR System
Atomization (media + air)Atomization (media + air)Atomization (media + air)Atomization (media + air)
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Products
OurOur corecore productsproducts areare: … : … SkidsSkidsOurOur corecore productsproducts areare: … : … SkidsSkids
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Scope and Competencies Scope and Competencies Scope and Competencies Scope and Competencies
SNCR System
Working with major OEMs.Working with major OEMs.
Experience and necessary Experience and necessary qualifications for skid qualifications for skid design and fabrication.design and fabrication.
Spray technologySpray technology
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• Market leader in Europe based on high quality & reliable systems
• Own engineering, R&D, commissioning support and service
• Sophisticated nozzle and lances for different processes available
• Individual control of each nozzle (lance)
• Intime & inplace control of all necessary variables
• Best possible results in reduction of reagents / daily costs
• Existing references in several cement plants.
• Customized or standard solutions available for customers
Good Reasons to try Lechler
DeNox solutionsDeNox solutionsDeNox solutionsDeNox solutions
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Thank you for your attention!
As an international As an international companycompany Lechler Lechler isis representedrepresentedin in moremore thanthan 50 countries 50 countries worldworld--widewide..
For For contactcontact detailsdetails andand moremore informationinformationpleaseplease visitvisit ourour websitewebsite..
www.lechler.comwww.lechler.com
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