precision spray nozzles & control skid for sncr...

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


SNCR System

Nozzle LancesNozzle LancesNozzle LancesNozzle Lances


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)


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


• 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


precision spray nozzles & control skid for sncr...

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