BELCLENE 200

Ref: V:\Waterfronts\Bel200GPI.docDecember 1999

BioLab Water AdditivesA Subsidiary ofGreat Lakes Chemical CorporationTenax Road Trafford ParkManchester M17 1WT United Kingdom

Phone +(44) 161 875 3875Fax +(44) 161 875 3175

Product Information

Belclene 200 AntiscalantGeneral Product Information

Belclene 200 has been developed as a calcium carbonateinhibitor in industrial water systems and other relatedapplications.

The active ingredient of Belclene 200 is a polymaleic acid.The CAS number is 26099-09-2

Typical physical properties

Appearance Clear amber liquidOdour slightsolids content 47-53%w/wspecific gravity 1.16-1.19pH (undiluted) <2viscosity at 25°C 12-30 cPs (10-25 cSt)boiling point range 100-102°C (212-214°F)freeze point range -5 to -12°C (23-10°F)solubility in water miscible ethylene glycol miscible methanol Miscible 50% caustic soda Readily neutralised with the

evolution of heatsteam volatility does not steam distilpH limitations to avoid precipitation,

Formulate below pH 2.5 orabove pH 8.0. At in useconcentrations Belclene 200is stable at any pH.

Thermal stability (TGA)Thermogravimetric analysis has shown that Belclene 200is stable up a temperature of 300°C (572°F).

Chemical reactivity/compatibilityBelclene 200 is not affected by chlorine or other oxidisingbiocides under normal use conditions. Test forcompatibility with long chain nitrogen compounds, aliphaticamine and quaternary ammonium compounds

The information contained in this product sheet is based on data available to Bihas no control over the use of this information by others, Bio-Lab, Inc. does notof merchantability or fitness for a particular purpose or any express or implied wtheir discretion and risk. Rev. 3/00

LogisticsClassification

packaging

Regulatory approvalsFDA(USA)

USDA (USA)

MITI (Japan)

Toxicology dataAcute oral LD50 (rats)Eye irritation (rabbits)Skin irritation (rabbits)Toxicity to fish96-hr LC50 (rainbow trout)96-hr LC50 (carp)

Ecological data96-hr LC50 (brown shrimp)48-hr LC50 (daphnia magna)48-hr LC50 (sludgeinhibition)CODTOCBiodegradability

Irritant for supplyCorrosive for conveyanceIATA class 8 UN No 1760IMCO class 8 UN No 1760HDPE 220L XL-ring MauserdrumHeight 935 mmDiameter 580mmGross weight 249.5kgNet weight 240.0kg

21 cfr 173.310 – boiler additives21 cfr 173.45 – beet and canesugar21cfr 573 – poultry wateringsystemsG5: cooling and retort waterG6: boilers, steamlines possiblefood contactG7: boilers, steamlines, coolingsystems no food contactA1:cleaning compounds;meat/poultry plantsJapanese discharge regulations

>5000 mg/kgirritant (EEC guidelines)non-irritant (EEC guidelines)

>100 mg/l

>100 mg/l

580 mg/l>1000 mg/l>1000 mg/l1199 mg O2/g1050 mg O2/g18% in 35 days(OECD 302B screening test)

o-Lab Inc., BioLab Water Additives and is thought to be correct. Since Bio-Lab, Inc, guarantee the same results described herein will be obtained, and makes no warrantyarranty. This information is intended for use by technically trained personnel at

Patents

BioLab, Inc. owns or is licensee of patents and patent applicationsWhich may cover the products and/or uses described in thisbrochure.

The following are trademarks of BioLab, Inc.:-

Belclene, BioLab Logo, Waterfront Logo

Registered US Patent and Trademark Office

1999 BioLab, Inc. All rights reserved.

The information contained in this product sheet is based on data available to Bio-Lab Inc., BioLab Water Additives and is thought to be correct. Since Bio-Lab, Inc,has no control over the use of this information by others, Bio-Lab, Inc. does not guarantee the same results described herein will be obtained, and makes no warrantyof merchantability or fitness for a particular purpose or any express or implied warranty. This information is intended for use by technically trained personnel attheir discretion and risk. Rev. 3/00

BioLab Water Additives BioLab Water AdditivesTenax Road, Trafford Park PO Box 1489Manchester DecaturM17 1WT GA30031-1489United Kingdom USATelephone (44) 161 875 3875 Telephone (1) 404 378 8585/800 600 4523Fax (44) 161 875 3175 Fax (1) 404 370 7485Telex 666177

Visit our Website at www.wateradditives.com

The information contained in this product sheet is based on data available to Bio-Lab Inc., BioLab Water Ahas no control over the use of this information by others, Bio-Lab, Inc. does not guarantee the same results dof merchantability or fitness for a particular purpose or any express or implied warranty. This information itheir discretion and risk. Rev. 3/00

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Ref: b200testdata.docJanuary 2000

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Phone +(44) 161 875 3875Fax +(44) 161 875 3175

Product Information

Chemical charge

T

elclene® 200; The Industry Standard foralcium carbonate under severe serviceonditionsractical experience has shown that Belclene 200 antiscalant is

he most effective calcium carbonate scale inhibitor for severeervice conditions. Belclene 200 is widely use in manyroprietary formulations and is in use in thousands of systemsorldwide.

esearch carried out at BioLab Trafford Park Laboratories hasonfirmed this experience in direct comparison with alternativehemical inhibitors.

n experimental pilot cooling tower (PCT) was used as shown inigure 1. The PCT was run continuously with zero blowdown toncrease the cycles of concentration. Heat transfer was

onitored continuously and the water analysed at regularntervals. A loss of more than 10% of the soluble calcium wasaken to indicate polymer failure. The results are shownraphically in figure 2. The results prove conclusively thatelclene 200 will stabilise calcium carbonate more effectively

han other available chemical inhibitors in severe servicepplications, and maintains performance at Langelier scaling

ndex of up to 3.3.

igure 1: Recirculating water pilot cooling tower

`Heatexchange

Feed tankPilot cooling tower

T

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Benefits to the customer

• Belclene 200 conforms to ISO 9000 quality procedures.Customers can therefore expect a quality product which iseasily formulated into proprietary products and which isreadily available.

• Belclene 200 provides cost-effective calcium carbonatescale control. It is particularly effective in high hardnessconditions.

• Belclene 200 helps to maintain heat transfer rates, thusreducing energy costs and extending plant operation for theend user.

It is therefore simple to demonstrate a positive payback ontreatment cost to the end user.

dditives and is thought to be correct. Since Bio-Lab, Inc,escribed herein will be obtained, and makes no warranty

s intended for use by technically trained personnel at

The information contained in this product sheet is based on data available to Bio-Lab Inc., BioLab Water Addhas no control over the use of this information by others, Bio-Lab, Inc. does not guarantee the same results deof merchantability or fitness for a particular purpose or any express or implied warranty. This information is itheir discretion and risk. Rev. 3/00

Belclene 200

Figure 2: Inhibition of calcium carbonate in the pilotcooling tower

0

20

40

60

80

100

1.0 1.5 2.0 2.5 3.0 3.5 4.0

cycles of concentration

% in

hibi

tion

of c

alci

um c

arbo

nate

Failure point

polyacrylate

blank

AMPS/acrylic polymer

Starting water conditionsCa2+ 250 ppm as CaCO3Mg2+ 121 ppm as CaCO3CO3

2- 57 ppm as CaCO3HCO3

2- 295 pm as CaCO3pH 8.8Bulk solution temperatureHeat exchanger

40oC

Surface temperatureHeat exchanger metallurgyCycle timeAdditive dosage

70oCStainless steelAbout 24 hours20 ppm as active ingredient

Langelier scaling index at failure pointBelclene 200 3.3 (850 ppm as CaCO3)PAA (molecular weight2000)

3.1 (645 ppm as CaCO3)

AMPS/acrylic 2.7 (363 ppm as CaCO3)






Visit our Website on www.wateradditives.com

itives and is thought to be correct. Since Bio-Lab, Inc,scribed herein will be obtained, and makes no warrantyntended for use by technically trained personnel at

Ref: b200histsugar.docJanuary 2000


Phone +(44) 161 875 3875Fax +(44) 161 875 3175

Product Information

Belclene® 200 antiscalantCase histories in sugar mill evaporators

SummaryBelclene® 200 antiscalant has been shown to be extremelyeffective as a scale inhibitor in two cane sugar mill evaporators.The use of Belclene 200 at 8 mg/l (product) enables the mills toextend the length of time between evaporator cleanings andsubstantially reduce the amount of chemicals required for suchcleaning. The use of Belclene 200 has increased sugar,molasses and energy production resulting in significanteconomic benefits at both mills.

IntroductionOwing to its outstanding performance in inhibiting the mixedscales found in sugar evaporators, Belclene 200 has gainedstrong acceptance as part of formulations to treat scale in bothcane and beet sugar processes. Utilising formulations based onBelclene 200 can significantly improve scale inhibition, resultingin reduced down time for cleaning, higher mill productivity andreduced cleaning chemical usage. Belclene 200 has FDAclearance for use in beet and cane sugar (21 cfr 173.45).

Deposits found in sugar evaporators often contain a mixture ofinorganic scale species which can include:

- calcium carbonate- calcium phosphate- calcium oxalate- calcium silicate- calcium sulphate

Sugar mill evaporators often require frequent cleaning, causinglengthy shut downs, which reduce production and incursignificant cleaning chemical expense. Belclene 200 has beenfound to be excellent at controlling such mixed scales and thehigh thermal stability of Belclene 200 makes it ideal for use atthe high temperatures experienced in sugar evaporator systems.The following case histories are taken from successful trials ofBelclene 200 at two cane sugar mills in Latin America.

The information contained in this product sheet is based on data available to Bio-Lab Inchas no control over the use of this information by others, Bio-Lab, Inc. does not guaranteeof merchantability or fitness for a particular purpose or any express or implied warranty. their discretion and risk. Rev. 3/00

Case history 1

Prior to the addition of Belclene 200Milling capacity 11000 tonnes/dayProduction rate 95 kg sugar/tonne ground

caneScale characteristics Calcium phosphate, calcium

sulphate, calcium carbonate,silicate

Total hardness(clarified juice)

1200 mg/l as CaCO3

Cleaning cycle 6 daysScale thickness(prior to cleaning)

0.8 mm – 1.6 mm hard scale

Cleaning time 14-24 hours(750 kg sulphamic acid,14,000 litres sodiumhydroxide)

With Belclene 200Dosage rate 8 mg/l of Belclene 200

(product) to clarified juiceScale thickness 0-0.4 mm soft scaleCleaning time 8-12 hours

(300 kg sulphamic acid,5,500 litres sodiumhydroxide)

ResultsThe use of 8 mg/l of Belclene 200:

- reduced scale thickness by over 50%- reduced the total amount of cleaning chemicals required by

60%- reduced the number of hours downtime for each clean by

50%.

., BioLab Water Additives and is thought to be correct. Since Bio-Lab, Inc, the same results described herein will be obtained, and makes no warrantyThis information is intended for use by technically trained personnel at

Case history 2

Prior to the addition of Belclene 200Milling capacity 3000 tonnes/dayProduction rate 95 kg sugar/tonne ground

caneFlow of clarified juice 460 tonnes/dayScale characteristics Calcium phosphate,

calcium sulphate, calciumcarbonate, calcium silicate

Total hardness(clarified juice)

800 ppm as CaCO3

Cleaning cycle 9 daysScale thickness(prior to cleaning)

0.8 mm – 1.6 mm hardscale

Cleaning time 14-24 hours(400 litres HCl, 300 kgNa2CO3, 400 litres NaOH,activators)

With Belclene 200Dosage rate 8 mg/l of Belclene 200

(product) to clarified juiceCleaning cycle 14 daysScale thickness 0.4 mm – 0.8 mm soft scaleCleaning time 10-14 hours

(220 litres HCl, 150 kgNa2CO3 400 litres NaOH,activators)

The information contained in this product sheet is based on data available to Bio-Lab has no control over the use of this information by others, Bio-Lab, Inc. does not guaranof merchantability or fitness for a particular purpose or any express or implied warranttheir discretion and risk. Rev. 3/00

Results

The use of Belclene 200 antiscalant:

- enabled the mill to extend time between shutdownsfor cleaning by 55%

- reduced scale thickness by 50%

- reduced the total amount of cleaning chemicalsrequired by 60%

- reduced the number of hours downtime for eachclean by approximately 30%.

ConclusionsBelclene 200 has been proved to be a very effective antiscalantfor sugar mill evaporators at an additive rate of 8 ppm (product).

By reducing the downtime required to clean evaporators, the useof Belclene 200 helped to increase the production of sugar,molasses and energy by up to 10% resulting in significanteconomic benefits for both mills.

Any scale formed in the presence of Belclene 200 is softer andeasier to remove requiring decreased chemical usage and lesstime for cleaning.







Inc., BioLab Water Additives and is thought to be correct. Since Bio-Lab, Inc,tee the same results described herein will be obtained, and makes no warranty

y. This information is intended for use by technically trained personnel at

Ref: b200hist.docJanuary 2000

Product Information

BioLab Water AdditivesA Subsidiary ofGreat Lakes Chemical CorporationTenax Road Trafford ParkManchester M17 1WT

Phone +(44) 161 875 3875Fax +(44) 161 875 3175

Case history on the use of Belclene® 200 ina water containing silica

SummaryBelclene 200 scale inhibitor has been used successfully for over12 months to control scale in a water containing silica. Prior tothe successful use of Belclene 200 at 2-5 mg/l (product) neitherthe addition of a phosphonate at 25 mg/l (product) nor the use ofa sodium polyacrylate at 40 mg/l (product) gave acceptablescale control.

IntroductionScaling frequently occurred in three steel storage tanks whichheld 4000 m3 of cooling water at temperatures up to 42oC. Thewater was used for emergency storage, cooling of blowdownlines on high pressure boilers and bearing cooling on large 8000kW pumps.

The water was traditionally treated with acid to reduce thescaling potential. Acid dosing was used to reduce the pH to 7.0but difficulty in controlling the dose level prohibited thisprogramme from being used successfully.

The water analysis and the composition of the scale are shownin tables 1 and 2 respectively. From the scale analysis, it isevident that silica and sulphate are the major components of thescale formed. In contrast to sulphate scaling, silica scale isdifficult to control effectively and can lead to severe operationalproblems or restrictions on the cycles of concentration within asystem.

The scaling potential was such that over 200 kg of sludge had tobe removed from each tank every year.

Table 1: Analysis of water treated with Belclene 200Total dissolved solids at 25oC 2900 mg/lpH 8.9P alkalinity 36 mg/l as CaCO3Total alkalinity 200 mg/l as CaCO3Chloride 1022 mg/l as Cl-Sulphate 360 mg/l as SO4

2-

Silica 69 mg/l as SiO2Total hardness 600 mg/l as CaCO3Calcium hardness 250 mg/l as CaCO3Magnesium hardness 350 mg/l as CaCO3Sodium 911 mg/l as Na+

The information contained in this product sheet is based on data available to Bio-Lab Inc.has no control over the use of this information by others, Bio-Lab, Inc. does not guaranteemerchantability or fitness for a particular purpose or any express or implied warranty. Thdiscretion and risk. Rev. 3/00

Table 2: Scale analysis before treatment with Belclene 200Organics 7.2%Silica 18.9% as SiO2Calcium 9.6% as CaCO3Sulphate 39.8%* as SO4

2-

Magnesium 7.8% as MgCO3Iron 10.6% as Fe2O3Phosphate 3.2% as PO4

3-

*this was probably due to sulphuric acid dosing

Previous unsuccessful treatmentsPrior to the application of Belclene 200, trials were conductedwith both a phosphonate and a polyacrylate.

Treatment with phosphonateA phosphonate (AMP) was dosed at 25 mg/l (product). After aperiod of 2 months, severe scaling was found on the blowdownline cooling casing and in the bearing cooling of the largepumps.

Treatment with polyacrylateA sodium polyacrylate was dosed at 40 mg/l (product). Thisproduct gave a slight improvement over the phosphonate interms of scale formation on the surfaces but was not effectiveagainst sludge deposition in the storage tanks.

Successful treatment using Belclene 200Belclene 200 was initially dosed at 5 mg/l (product) and after 3months’ successful operation, the dose level was reduced to 3.5mg/l (product) for a further 6 months. After this secondsuccessful period, the dose level was reduced to 2 mg/l(product).

The Belclene 200 trial was evaluated after 12 months’ operation.At the end of the 12-month period, there were no visible signs ofsludge in the storage tanks, scale on the blowdown line coolingcasing or in the bearing cooling of the large pumps. During thisperiod, the temperature in the blowdown lines reached amaximum of 70oC.

ConclusionIt has been clearly demonstrated that Belclene 200 significantlyoutperformed both a phosphonate and a polyacrylate inproviding scale and sludge control.

, BioLab Water Additives and is thought to be correct. Since Bio-Lab, Inc, the same results described herein will be obtained, and makes no warranty ofis information is intended for use by technically trained personnel at their

Patents

BioLab, Inc. owns or is licensee of patents and patent applicationsWhich may cover the products and/or uses described in thisbrochure.





The informationhas no control omerchantabilitydiscretion and r



contained in this product sheet is based on data available to Bio-Lab Inc., BioLab Water Additives and is thought to be correct. Since Bio-Lab, Inc,ver the use of this information by others, Bio-Lab, Inc. does not guarantee the same results described herein will be obtained, and makes no warranty of or fitness for a particular purpose or any express or implied warranty. This information is intended for use by technically trained personnel at theirisk. Rev. 3/00

BELCLENE 200

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