MM Aqua(An ISO Certified Company)

The more you know about their excellent performance,the more you'll specifY them!

SPECTRA Cooling Tower Drift Eliminators

M(An ISO Certi any)

SPECT ooling Tower Drift Eliminators

5.04.03.0

and petrochemical installations.

MM Aqua's SPECTRA Drir­Eliminators provide outs,tandingperformance in both crossflow ancounterflow applications. Since firstintroduced in 1979, a number 0':­

operating SPECTRA installationhave been independently tested b:­various agencies using both sensiti\·~paper and isokinetic sam plin;:,techniques.

Measured drift rates typically yanfrom 0.003 to 0.0005 percent ofcirculating water rate. Toutstanding performanr~attributable to SPECTRA'S ~

and patented blade design.some cellular designs may offerdrift rate results, they lack theand rigidity of the SPECTR-

Velocity. meter/see

2.01.0

Fig:lrr':. SPECTRA' Pressure Drop Curve

most eEectiye design and a numbet of-em products rely on this simple

geomerry. \\bile highly efficient,orher blade products temain limitedb~-rheir inability to rapidly change thedirection of small mass droplets. the

P:;::c-R -\ design (Figure 2) hasoyercome iliis generic limitation byextending me third pass impactu..-fuceby O\'er 35% and by adding a

trailing edge airfoil. This airfoil createsa s~anation region immediatelyupstream which the smallest dropletsemer ane are then eliminated by

g rhe airfoil surface outside ofnceofrhe main airflow.

~PEC-=-~-\ Drift Eliminators

conLinue (Q omperform other designsFigure 3, and are widely accepted

-l...e product-oF-choice by~hlding hundreds of utility

SPECTRA® Drift Eliminators are .lresult of extensive research and ter.::ng

using state-of the-art technology cosol~'r

a universal cooling tower problem in :-[most cost effictive way available coda).

SPECTRA Drift Eliminators offer rhe

best performance available at acompetItIve pnce.

Removing liquid droplets tromcooling tower exhaust air while usingas little fan energy as possible is whatefficient drift removal is all about:

(Figure 1). One look at the bladedesign of SPECTRA DtiftEliminators will tell you why they aresuperior in virtually eliminatingcooling tower drift in an energyefficient way.

All drift eliminator designs rely onrapid changes in velocity anddirection of air-droplet mixtures toremove drift by impaction oneliminator passage surfaces. Thiprinciple applies to both cellular andblade type designs. Sinusoidal passagefotms are widely acknowledged as the

Figure 2. SPECTRA's strong double-wallblade design

,.

Mechanical PropertiesRockwell Hardness"R" ASTM-D-785 114R

Durometcr Hardness "[)" ASTM-D-785 SOD

Physical PropertiesSpecific Gravity ASTM-D792 1.50

Tensile Strength at 23°(kg/sq.cm) ASTM-D63R 443

Modulus ofEbsticiry

in TensilJl1 (kg/sq.cm) ASTM-D-63H 29176

Compressive Strength (kg/sq.cm) ASTM-D695 647

; Flexural YieldSuength (kg/sq.cm) ASTM-D-650 850

Izod Impact Strength 22°C

(metre-kg/metre, notch 3.157mm bar) ASTM-D256 9.8

Heat DellectlonTcmpcratun:

at 19k9/sq.cm (OC) ASTM-D648 75Coefficient of Linear

TABLE 1. Mechanical and physical properties ofSPECTRA PVC.

capability. Once SPECTRA DriftEliminator panels are installed, novoids or discontinuities exist in theeliminator section. This means that

with SPECTRA blow-by and carry­over become virtually nonexistent.

Superior Material

SPECTRA PYC is speciallyformulated for its superior physicalproperties. It includes TitaniumDioxide as a UV inhibitor to provideexceptional resistance to ultravioletradiation in outdoor weather

exposures. SPECTRA PYC stands upwell to temperature variations, aircontamination and biological attack.SPECTRA Drift Eliminators aremade of PYC that meets or exceeds

A5TM-D696 57.e:

ASTM-D635 ExtinguishingA5TM·£-84-70 25

5 pam/100

Expansion, kr C x 10_"

Flammability

Flame SpreadUV lnhibin:d with Titanium Dioxide

Minimal Blow-by, Carryover,Reentrainment

ide plates are designed with self­locking flanges that provide quick,positiye panel end seals. SPECTRA'Sside plate also has a built-in drainchannel to drain collected drift liquidto non-critical areas outside the main

gas stream. This is particularlyimportant because competitivecellular desi!?:ns lack this drain

and once they plug there is no way topressure wash them because they arefragile. SPECfRA'S rugged, double­wall construction allows pressurewashing without damage to eliminateany efficiency loss due to biomassbuild-up.

Glue-Free Assembly, EasyInstallation

SPECTRA blades and side plates are,easily assembled into panels at the job

site. No thermal shock-sensitive

bonding agents are used. Assembly isquick and easy'without special labor,tools or ancillary fasteners. Panels areinstalled in any' opening with supportmembers on twO opposing sides andcan span 3 metres withoutintermediate supports. Most in-placewood or concrete cooling towersrrucrural members may be used forSPECTR -\ Drift Eliminator paneluppon without additional framing.

Double- "WallConstruction

SPECTRA'S double-wall

construction, coupled with theexceptional physical properties ofpye, assures structural integrity anddimensional stabijity for maximumservice life.

design. And SPECTRA provides auseful air velocity operating rangethat is well beyond the limits of otherproducts.

Exceptional Strength, WideSpans

MMAqua's unique SPECTRA bladedesign provides superior beamstrength allowing spans of upto 3metres without intermediate

supports. This exceptional spancapability is a big advantage for drifteliminator replacements in naturaldraft cooling towers. The ruggeddesign of SPECfRA DriftEliminators means they can bepressure washed, if necessary, withoutdamage.

Pressure "WashAway BiomassFoulingWith the new water treatment

restrictions in cooling rowers,biological fouling is becoming anincreasingly important concern.Cellular designs are much moresusceptible to fouling and plugging

Figure 3. Perflrmance comparison of SPECTRA '/i"and SPECTRA "C" Drift Eliminators with competitive products employing driftmeasurement technique developed by Environmental Systems Corporation that utilized water sensitive paper to appraise drift eliminatoreffectiveness.

000 o oSPECTRA 'A" SPECTRA "C" 1 2 3 4 5 6 7 8

30 DAY IMMERSIONS AT

Room Temperature

60°C

Tensile

WeightOriginalTensileWeightStrength

ChangeTensileStrengthChangeCHEMICAL REAGENT

(kg/sq.cm)(%)(kg/sq.cm) (kg/sq.cm)(%)

AcecicAcid (80%)

541+0.8541534+1.62

Chromic Acid (10%)

534+0.20548612+0.22Fluboric

562+0.23569576+0.62

Hydrochloric Acid (30%)

548+0.20541562+1.26

HrdrofluoricAcid (70%)

366+3.90506373+5.24Lead Nitrate

513+0.23520569+0.63

Manganese Chloride

520+0.24520569+0.36l\!ercuric Sulfate

527+0.28520562+0.71

NiuicAcid (30%)527+0.13541590+0.89

Porassium Bisulfate541+0.24520598+0.53

Sodium Bichromate527+0.27520576+0.73

Sodium Hydroxide (50%)

564+0.04524614-0.02

Sodium Acid (60%)520-0.08541605-0.23

Water (Distilled)541+0.27524636+0.79

the ASTM D-1784 cell no. 13354

specifications for Type 1 rigidpolyvinylchloride compounds. Type 1PVC compounds have the higheststrength and chemical resistanceproperties of all the rigid PVCcompounds. (Table 1). In theserespects PVC is considered superior toother plastics. PVC retains highimpact and tensile strength and resistsheat distortion over a wide range oftemperatl~re conditions. Theseproperties, coupled with the higltlystable double-wall blade construction

and low working stresses, assure stableblade dimensions and structural

integrity of the SPECTRA designeven under severe thermal shockconditions.

Long Operating LifeSPECTRA PVC is highly imperviousto chemical and biologicaldegradation. Strong acids, alkalies andsalt solutions have minimal effects on

both its strength and durability (Table2). The exceptional resistance ofSPECTRA's PVC compound tochemical and biological attack providea notably longer operating lifecompared to wood or other plastics.

Lower Fire Risk

As the result of extensive testing,SPECTRA Drift Eliminators have

been assigned a Class 1 fire retardantrating. Tunnel tests conducted bySouthwest Research Institute, inaccordance with ASTM- E-84-70 test

TABLE 2. ChemicaL Resistance of SPECTRA pvc

procedures, verified the non­combustibility of SPECTRA DriftEliminators and show a flame spreadrating of 25 or less and a fuelcontribution factor of O. This meansreduced fire risk and lower insuranceCOSts.

Economical Shipment andStorageThe unique design of SPECTRADrift Eliminators allows shipmentand storage in a compact, low volumenest form. In comparison to highvolume cellular type designs,SPECTRA provides significantlylower shipping, handling and in-plantstorage COSts.

LightweightThe SPECTRA Drift Eliminator

weighs only 6.59 kg/cu.meter. This is1/2 to 1/3 lighter than most wood

eliminator designs and reducesloads on tower structures.

Product UniformityDimensional accuracy and uniforml_are assured on every panel sinceinterlocking elements are fabricatedthe factory to close tolerances.

Ask about our operati ninstallations and see how we'

solved those tough drift problelfor others with SPECTRA D'Eliminators.

Let us quote your drift eliminatorequirementstoday.

MM Aqua Technologies ltd.Head Office & Works: Behrampur Road, Khandsa, Dist. Gurgaon, Haryana -122 001, INDIA.

Tel.: +91-124 - 2215134/5257/5253; Fax: +91 -124 - 2215135. E-mail: info@mmaqua.com;Website:www.mmaqua.com

Kolkata : 40/1 A Block B, New Alipore, Kolkata - 700 053, West Bengal, Tel.: +91-33-24783630/3512, Fax: +91-33-24783649

Mumbai: 4370, 2nd Floor, Vashi Plaza. Sector 17. Vashi. Navi Mumbai-400706, Tel: +91-22-27893042, Fax: +91-22-27890106

Chennai : Plot No.6, 2nd Floor, New No. 68, Old no. g7. Greams Road, Chennai-600006, Tel.: +91-44-28292658/5572, Telefax: +91-44-2829t--­

Hyderabad : 412, Maheshwari Chambers. Somajiguda. Hyderabad-500 082, Andhra Pradesh, Telefax: +91-40-30602630