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Ammonia Injection

CALCINER AND KILN DUCT RISER

Orientation Session

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Contents

Introduction and PurposeWhy 19% ammoniaEquipment requiredProcess Description-PIDCommissioningMaterial safety information - MSDS

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Introduction and Purpose

To reduce the amount of Nitrogen Oxides emitted into the air. (NOx) NOx are a major source of atmospheric pollutionControl methods involve combustion and post combustion operating practicesSelective Non-catalytic Reduction (SNCR)Selective Catalytic Reduction (SCR)

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Why 19% Ammonia

Ammonia contains Nitrogen and hydrogen (NH3).Is absorbed in the gas/material stream and forms other non harmful compoundsHas been proven to be an effective and inexpensive SNCR method of control NOx emissions. Most effective is in the kiln riser duct.

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Why 19% ammonia

Ammonia solution is 19% by volume, the remainder 81% is water.Also called Ammonium Hydroxide, Aqueous solution, Ammonia Water, Pony p..s.The solution remains toxic to a certain degree – caution when handlingFamiliarization with MSDS

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Injection Equipment

Injection lances Atomizing air and flow control cabinetPiping system for air and ammonia solutionPumping station Storage tank

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Lances

High temperature material - 316 stainlessRequire constant air flow for coolingShould last 8-10 months of operation.Nozzles are easily replaced 2.7 lt/min @ 45-70 psi4.5 mm orifice, 35-40 micron dropletsAir 13.25 scfm @ 70-80 psi

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Lance design

Ammonia tube

Air tube

Nozzle tip

Carbon SealOrifice Valve

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Riser duct lance installation El 116-6” ft

Lance controls

Air header 1”

Ammonia header 3/4”

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Atomizing control cabinet

Atomizing control cabinet

Blue –air

Green-ammonia

Control vlave

Flow transmitter

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Pump skid

Pressure switch

Pressure Regulating Valve

DP Across StrainersPump discharge pressure

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Tank Farm

Pump skid

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Containment overflow Valve

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Truck Loading Station

Tank Level Indicator and fill

Valve open/close

Indicating lights

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Process Flow diagram description

Storage tankPump skidAtomizing Control CabinetLances and controls

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PID Diagram

Tank farm Pump skid

Atomizing cabinet

Lances and controls

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Commissioning

Hydrostatic test Water test – simulate the process using waterFine tuning adjustmentsElectrical – groundingMotor rotation verified – connect pumpAnalog and digital signals verified- red/green lights, level display

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Commissioning

Check lance nozzle if free of debrisVerify flow ratesFine adjustment at each lance Balance air/solutionReady to start up

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Start Up

Water was drained?Tank filled with ammonia?Containment space cleaned and cleared!Start the pump – it will take some time to reach the control cabinetThe effect of ammonia injection will take a few minutes to show results. Follow gas analyzer output

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Material safety data sheet

Ammonia SupplierMSDS attached – read Avoid Inhalation, skin contact, eye contactFresh air Use lots of water on the affected area Spill – stop leak, dilute with lots of waterFertilizer, household cleaning, pharmaceutical, lubricants

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Questions?

Thank you