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Pneumatic Atomizing LancesSeries 77X / 78X / 79X
2
Today’s producers have to operate in a tougher environment than ever before, driven by:
nCustomerdemandforimprovedquality
nConstantpressureoncost
nTighterpollutioncontrol
Lechlernozzlesandspraysystemsareusedinmanystagesofindustrialproductionandtheirperformancecanhaveamajorimpactonproductqualityandmanufacturingcost.
Forover130years,Lechlerhaspioneereddevelopmentsinspraytechnologyforallindustries,designing,developingandmanufacturingproductsofoutstandingreliabilityandperformance.Allcomeaccompaniedbyexpertisebasedonthoroughknowledgegainedthroughexperienceinprovidingbothconventionalandinnovativesolutions.
Today,Lechleroffersacomprehensiverangeofnozzlesandspraysystemsavailabletoindustryworldwide.
Serving industry worldwide
Lechlerisatrulyinternationalcompany,offeringsalesandtechnicalsupporttodiverseindustriesthroughouttheworld.
InadditiontoourMetzingenheadquartersinGermany,LechlersubsidiarycompanieshaveplantsandofficesintheUK,theUSA,India,China,France,Belgium,Spain,Sweden,FinlandandHungary.Wealsohaveanetworkofsalesofficesandrepresentativescoveringsixcontinents.
Headquarters, Germany
Lechler Ltd., United Kingdom Lechler Inc., USA
PERRY JOHNSONREGISTRARS, INC.
ISO 9001:2008 Certified
Whereveryouare,Lechlerisaimingtoestablishapartnership,helpingyoutoenhanceproductqualitythroughtheapplicationofexpertiseinadvancedfluidengineering.
Advanced spray technologybased on 130 years of experience
3
Pneumatic Atomizing Nozzles Series 77X / 78X / 79X
Table of Contents Page
Series 77X / 78X / 79X
Design 4
Applications 4
Atomizingprinciples 5
Externalmixingnozzlewithsolidjet-atomization 5
Externalmixingnozzlewithpre-atomization 5
Comparisonofthetwoatomizingprinciples 5
Series 76X
Twinfluidnozzleswithsolidjet-atomization 6
Twinfluidnozzleswithpre-atomization 7
Series 77X / 78X / 79X
Lancetypes 8
StandardizedNozzleConnectionsonApparatus 9
FlangeConnectionDIN/ISO 9
Tri-ClampConnection 10
DimensionsClampWeldStub 10
DimensionsBlankClampStub 10
Questionnaireforlances 11
ApplicationsnGastreatmentnSpraydryingnFluidizedbedgranulationnCombustionofliquidsnMostanyapplicationrequiringtheatomizing
ofliquidintosmalldroplets
Product benefitsnModularconceptwithcomponents
fromstock(ensureshortestdelivery)nLargevarietyofcombinations
-Solidjet(lesscloggingrisk)-Pre-atomization(highefficiency)
DesignnExternalmixingtwinfluidnozzle
toproducefinestdropletsnLengthupto61/2ft.nDifferentstandardizedconnections
toapparatusavailable:-Flange-Tri-Clamp
nMaximumoperatingpressure:150psinMaximumtemperature:750°FnMaterial:316LStainlessSteelnSolidjetsuctionpiecesforspraying
suspensionsandliquidswithhighviscositynPre-atomizationsuctionpieceforcreating
ahighlyatomizedsprayfluid
Pneumatic Atomizing LancesSeries 77X / 78X / 79X
4
5
Pneumatic Atomizing Nozzles Series 76X
Comparison of the two atomizing principles
Mainfeaturesofsolidjetatomization:
nMaximumfreepassages,lessriskofclogging(max.particlesize0.3mmxB*)
nSuitableformediumtohighviscositymedianSmalldropletsbutlessatomizingefficiency
thannozzleswithpre-atomization
Atomizing principles
Externalmixingnozzlesareoneswhichmixgasandliquidoutsideofthenozzleneartheorifices.Theexpansionofthegastosonicspeedcreateslargevelocity
External mixing nozzle with solid jet atomization
Aliquidsolidjetleavingthenozzlesuctionpiecebreaksupintoligaments.Theseareatomizedintodropletsbytheatomizing
External mixing nozzle with pre-atomization
Mainfeaturesofpre-atomization:
nReducedfreepassageduetoswirlinsert,higherriskofclogging(max.particlesize0.3mmxE**)
nSuitablemainlyforlowtomediumviscositymediawithlowparticleloading
nHighatomizingefficiency,finestdroplets
Theliquidflowpassesthroughaswirlinsertinsidethenozzlecreatingflowrotation.Duetothisrotation,theliquidbreaksupintodroplets
*seepage6 **seepage7
differenceswithrespecttotheinjectedliquid.Theresultingshearforcesbreakuptheliquidintoveryfinedroplets.Lechlerdistinguishesbetweentwobasic
gaswhichleavesthegasorificesurroundingtheliquidsuctionpieceasaring-gap.
andformsasprayconewhenleavingtheorificeofthesuctionpiece.Theatomizinggasleavestheliquidsprayinasurroundingring-gap.
Nozzle
OrificesGas/Liquid
AreaofDispersion
SprayCone
EnclosingGasflow
Gas Gas
Liquid
Gas-SwirlPart
Suctionpiece
AirCover
Gas Gas
Liquid
Gas-SwirlPart
Suctionpiece
AirCover
X-SwirlInsert
externalmixseries:Solidjetatomizationandpre-atomization.Theatomizationprinciplesarebasedonthedesignofthenozzlesuctionpiece.
Thegasactsdirectlyonthesurfaceofthesepre-atomizieddroplets,furtheratomizingthemintoevenfinerdroplets.
Flowrate Atomizingair
No. Type Boredia-meter(in.)
Flowrategpm Size Airflow(SCFM) Outerdiameteroflance(in.)
Hydraulicpressure(psi) Airpressure(psi)
15 10 7 4 115 30 45 60 75 90
760.050.1E.00 .020 0.04 0.04 0.03 0.02 0.01
SN1 7.36 11.04 14.73 18.41 22.09 25.77 1.18
760.100.1E.00 .039 0.18 0.15 0.12 0.10 0.06
760.150.1E.00 .059 0.40 0.33 0.28 0.22 0.12
760.200.1E.00 .079 0.70 0.59 0.50 0.39 0.22
760.250.1E.00 .099 1.10 0.92 0.78 0.60 0.35
760.300.1E.00 .118 1.58 1.33 1.12 0.87 0.50
762.150.1E.00 .059 0.40 0.33 0.28 0.22 0.12
SN1 13.55 20.91 27.09 33.87 40.64 47.41 1.18
762.200.1E.00 .079 0.70 0.59 0.50 0.39 0.22
762.250.1E.00 .099 1.10 0.92 0.78 0.60 0.35
762.300.1E.00 .118 1.58 1.33 1.12 0.87 0.50
762.320.1E.00 .126 1.80 1.51 1.27 0.99 0.57
764.300.1E.00 .118 1.58 1.33 1.12 0.87 0.50SN2 32.40 48.59 64.79 80.99 97.19 113.09 1.50
764.500.1E.00 .197 4.40 3.68 3.11 2.41 1.39
766.300.1E.00 .118 1.58 1.33 1.12 0.87 0.50SN3 53.01 79.52 106.02 132.53 159.03 185.54 1.65
766.500.1E.00 .197 4.40 3.68 3.11 2.41 1.39
Twin fluid nozzles with solid jet atomization
760.XX0.1E1 762.XX0.1E2
M27X1.5
Ø30
Ø27
M14x1
10
157
54
M27X1.5
Ø30
Ø27
M14x1
10
157
54
764.XX0.1E3
M32X1.5
Ø38
Ø30
M14x1
10
11
50
766.XX0.1E4
M36x1.5
Ø42
Ø34
M14x1
10
10.5
50
Nozzle/Type Size Referenceairpressure(psi) Airflow(SCFM)760.xx0.1E SN1 3.0 25.00762.xx0.1E SN1 3.0 46.00764.xx0.1E SN2 3.0 110.00766.xx0.1E SN3 3.0 180.00
Pneumatic Atomizing NozzlesSeries 76X
SN1 SN1 SN2 SN3
Alldimensionsbelowinmm
Flow rate / atomizing air
1
2
3
4
6
7
Flowrate Atomizingair
No. Type Boredia-meterB(in.)
Nar-rowestcrosssec-tionE(in.)
Flowrate(gpm) Size Airflow(SCFM) Outerdiameteroflance(in.)Hydraulicpressure(psi) Airpressure(psi)
1.00 2.0 3.0 4.0 5.0 6.0 1.00 2.00 3.00 4.00 5.00 6.00
761.446.1E.00 .051 .039 0.25 0.33 0.39 0.44 0.48 0.51
SN1 7.36 11.04 14.73 18.41 22.09 25.77 1.18
761.486.1E.00 .057 .047 0.32 0.42 0.50 0.56 0.61 0.65
761.506.1E.00 .057 .047 0.36 0.48 0.56 0.63 0.69 0.74
761.526.1E.00 .065 0.51 0.40 0.53 0.62 0.70 0.76 0.82
761.566.1E.00 .073 0.51 0.50 0.66 0.78 0.87 0.95 1.02
761.606.1E.00 .081 .065 0.63 0.83 0.98 1.10 1.20 1.29
763.446.1E.00 .051 .039 0.25 0.33 0.39 0.44 0.48 0.51
SN1 13.55 20.91 27.09 33.87 40.64 47.41 1.18
763.486.1E.00 .057 .047 0.32 0.42 0.50 0.56 0.61 0.65
763.506.1E.00 .057 .047 0.36 0.48 0.56 0.63 0.69 0.74
763.526.1E.00 .065 .051 0.40 0.53 0.62 0.70 0.76 0.82
763.566.1E.00 .073 0.51 0.50 0.66 0.78 0.87 0.95 1.02
763.606.1E.00 .081 .065 0.63 0.83 0.98 1.10 1.20 1.29
765.486.1E.00 .065 .051 0.32 0.42 0.50 0.56 0.61 0.65
SN2 32.40 48.59 64.79 80.99 97.19 113.09 1.50765.646.1E.00 .091 .071 0.80 1.06 1.24 1.39 1.52 1.64
765.746.1E.00 .130 .075 1.42 1.87 2.20 2.47 2.70 2.91
767.646.1E.00 0.91 .071 0.80 1.06 1.24 1.39 1.52 1.64
SN3 37.70 56.54 75.39 94.24 113.09 131.94 1.65767.766.1E.00 1.30 .095 1.74 2.11 2.48 2.79 3.05 3.28
767.846.1E.00 .160 .126 2.50 3.30 3.88 4.35 4.76 5.12
M27X1.5
Ø30
Ø27
M14x1
10
157
54
M27X1.5
Ø30
Ø27
M14x1
10
15
54
M32X1.5
Ø38
Ø30
M14x1
10
11
50
M36x1.5
Ø42
Ø34
M14x1
10
10.5
50
Pneumatic Atomizing NozzlesSeries 76X
SN1 SN1 SN2 SN3
Alldimensionsbelowinmm
Twin fluid nozzles with pre-atomization
Nozzle/Type Size Referenceairpressure(psi) Airflow(SCFM)761.xx6.1E SN1 3.0 25.00763.xx6.1E SN1 3.0 46.00765.xx6.1E SN2 3.0 110.00767.xx6.1E SN3 3.0 128.00
Flow rate / atomizing air
761.XX6.1E5 763.XX6.1E6 765.XX6.1E7 767.XX6.1E8
5
6
7
8
Series SL 1 77Xwith nozzlesSN 1, 760.XXXSN 1, 762.XXXSN 1, 761.XXXSN 1, 763.XXX
Material:316L
Series SL 278Xwith nozzles SN 2, 764.XXX SN 2, 765.XXX
Material:316L
Series SL 3 79Xwith nozzles SN 3, 766.XXXSN 3, 767.XXX
Material:316L
Lance types
Pneumatic Atomizing Lances Series 77X / 78X / 79X
Angular LancesAngularlancesarealsoavailable.Theanglecanbeselectedbetween0°and90°.
max.2000
Liquid
Air
0°-90°
max.2000
Ø3
0
G3/
8AIS
O22
8
G3/8AISO228
Air
PNEUMATICATOMIZINGNOZZLE
max.2000
G3/
8AIS
O2
28
G1/2AISO228
Air
PNEUMATICATOMIZINGNOZZLE
Liquid
LiquidØ
38
max.2000
G3/
8AIS
O22
8
G3/4AISO228
Air
PNEUMATICATOMIZINGNOZZLE
Ø4
2.4
8
9
Position Flansch
b
k D
d2
D
k
d2
b
Example:FlangeaccordingtoEN1092-1
Standardized Nozzle Connections on Apparatus
Pneumatic Atomizing Lances Series 77X / 78X / 79X
Lechleroffers3standardizedsolutionsfortheconnectionbetweenapparatusandlance:
1)Withoutconnection, 2)Tri-Clamp forcustomizedsolutions
Position Tri-Clamp
F
3)Flange,DIN/ISO
Flange Connection DIN / ISO
Lechleroffersflangesolutionsforalllancesizesaccordingtostandards:
nDIN2527nEN1092-1nASMEB16.5
Pleasespecifythedesirednominalpressure(PN),thenominaldiameter(DN),andthepositionoftheflangeonthelance.
Alldimensionsbelowinmm
Foreachofthe3lancesizeswerecommendthefollowingTri-Clampconnection.
Lanceseries Imperial ISO
SL1 11/2" DN32
SL2 2" DN40
SL3 2" DN40
F
t
F
L
AB
S
D
Imperial D[mm] S[mm] F[mm] L[mm] A[mm] B[mm]
11/2" 1.50 .06 1.99 .020 1.26 2.00
2" 2.00 .06 2.52 0.21 1.26 2.50
ISO(DIN11864) D[mm] S[mm] F[mm] L[mm] A[mm] B[mm]
DN32 1.67 0.08 2.52 0.27 1.13 2.50
DN40 1.90 0.08 2.52 0.23 1.13 2.50
Imperial F[mm] t[mm]
11/2" 1.99 0.25
2" 2.52 0.25
ISO(DIN11864) F[mm] t[mm]
DN32 2.52 0.25
DN40 2.52 0.25
Pneumatic Atomizing Lances Series 77X / 78X / 79X
Tri-Clamp Connection
PleasespecifythepositionoftheClamponthelance.
Dimensions Blank Clamp Stub
Dimensions Clamp Weld Stub
Clampweldstub Blankclampstub
10
Pneumatic Atomizing Lances Series 77X / 78X / 79X
Questionnaire for lances
Company: ______________________________ Branch: __________________________________
Project: ______________________________ Contactperson:______________________________
Telephone: ______________________________ Faxnumber:________________________________
E-Mail: ______________________________
Description of liquid
nSuspension:_____________________________
nEmulsion: _____________________________
nPaste: _____________________________
nOthermedia:____________________________
Characteristics of atomizing liquid
nViscosity: ____________________________
nSpecificweight: ________________________
nPH-value: ____________________________
nLiquidtemperature:______________________
nLiquidcomponents: ______________________
Nozzles and lances
nMaterial: Standard:316LStainlessSteel
Other:________________________
Materialcertification:________________________
nLance design:
Lengthoflance:
Installationoflanceonapparatus:
None(plainlance)
Flange(standard____________________ )
Tri-Clamp(standard__________________ )
Other: _____________________________
nAtomizing quality
Requireddropletsize: ______________________
Process parameters
nAtomizing gas:
Gaspressure:________Steam:___________
Volumeairflow:
[cfm]:________________________________
[psi]:________________________________
Massflowofsteam:
[lb/h]:_______________________________
[psi]:________________________________
nLiquid:
Pumppressure/Flowrate:______/________
Sketch / additional comments of process and installations:
Lechler Inc. Precision Nozzles · Nozzle Systems445 Kautz RoadSt. Charles, IL 60174Phone: (800) 777-2926Fax: (630) 377-6657
11
07/1
2 . U
SA
. 250
. Sub
ject
tote
chni
calm
odifi
catio
ns.
Belgium:LechlerS.A./N.V.·AvenueMercatorlaan,6·1300Wavre·Phone:(10)225022·Fax:(10)243901·[email protected]: LechlerIntl.Trad.Co.Ltd.·Beijing·Rm.418LandmarkTower·No.8DongSanHuanBeiLu·Phone:(86)1084537968,Fax:(86)1084537458·[email protected]:LechlerOy·Posliinitehtaankatu7·04360Kerava·Phone:(358)207856880·Fax:(358)207856881·[email protected]:LechlerFrance,S.A.·Bât.CAP2B51·66-72,RueMarceau·93558Montreuilcedex·Phone:(1)49882600·Fax:(1)49882609·[email protected]: LechlerGmbH ·POBox1323·72544Metzingen·Phone:(49)7123932-0·Fax:(49)7123-962-333·[email protected] Britain:LechlerLtd.·1FellStreet,Newhall·Sheffield,S92TP·Phone:(0114)2492020·Fax:(0114)2493600·[email protected]: Lechler(India)Pvt.Ltd.·PlotB-2·MainRoad·WagleIndustrialEstate·Thane(W)-400604·Phone:(22)40634444·Fax:(22)40634497·[email protected]:LechlerS.A.·Avda.Pirineos7·OficinaB7,EdificioInbisaI·28700SanSebastiándelosReyes,Madrid·Phone:(34)916586346·Fax:(34)916586347·[email protected]:LechlerAB·Spärrgatan8·SE-65341Karlstad·Phone:(46)54137030·Fax:(46)54137031·[email protected]:LechlerInc.·445KautzRoad·St.Charles,IL.60174·Phone:(630)3776611·Fax:(630)3776657·[email protected]
Lechler Inc. Precision Nozzles · Nozzle Systems445 Kautz RoadSt. Charles, IL 60174Phone: (800) 777-2926Fax: (630) 377-6657
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