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Chemetator®
Scraped Surface Heat ExchangerThe Chemetator is a scraped surface heat exchanger ideal for manyapplications in the food, pharmaceutical and chemical industries. Duringoperation, the product flows through a jacketed cylinder containing a rotatingcentral shaft on which the scraper blades are mounted. These rotating bladescontinuously remove the product from the heat transfer tube.The Chemetator is particularly suitable for the continuous processing of highviscosity and heat sensitive materials which cannot be handled efficientlyusing batch methods or conventional heat exchangers.
ChemetatorScraped Surface Heat Exchanger
Increased EfficiencyThe Chemetator features variable speedrotating scraper blades which clean the heattransfer surface several hundred times aminute. This ensures excellent product mixingand high heat transfer efficiency on acontinuous basis. Product mixing can beimproved still further with the use of anoptional eccentric shaft.
FlexibilityThe Chemetator will handle a wide range ofheat sensitive and viscous materials attemperatures from –35° to 170°C andoperating pressures up to 70 bar (1015 psig).
Hygienic OperationStainless steel units ensure optimum hygienestandards and the closed system operatesunder pressure, preventing any atmosphericcontamination of the product duringprocessing. The Chemetator can be easilysterilised and is ideally suited for asepticprocessing systems.
Product QualityThe Chemetator ensures a product of uniformcomposition and quality. Accurate control andhigh throughput speed mean virtually noproduct degradation.
Construction OptionsAvailable in a range of sizes, the Chemetatorcan be manufactured in materials most suitedto the application. Heat transfer tubes can besupplied in nickel or mild steel, with hardchromium plating for wear resistance, or instainless steel or Venjex. Mutator shafts areavailable in stainless or mild steel and can besupplied in different diameters to suitparticular products. Different arrangements ofblades are used according to the application.
Chemetator ApplicationsSimplicity of operation combined withaccurate process control makes theChemetator ideal for heating, cooking,pasteurising, sterilising, cooling, gelatinisingand crystallising.
Examples are:–LiquoriceThe Chemetator enables processing ofliquorice paste at its final 20% moisturecontent thus saving steam costs andeliminating the need for stoving.
Starch Jellies Continuous cooking of starch jellies can beachieved in seconds at elevated temperaturesof 140°C in a Chemetator system.
Cooling of Biscuit CreamChemetators are used extensively for thecooling of sugar and oil blends which aredirectly fed to the creamer. Air injection prior tochilling allows density adjustment.
Chilling of Edible FatsThe Chemetator is standard equipmentthroughout the margarine industry giving aconsistent texture of product on a fully continuoussystem from blending to packaging. Numerousprocessing ancillaries give the Chemetator theability to process tub, block, cake and pastrymargarines as well as low fat spreads.
Throughout the world Chemetators are inoperation producing pumpable and bulkfilled shortenings and ghees. Lard is alsoprocessed either for consumer packs orsemi-liquid bulk filling.
Chemetator model246 - A4M
Chemetator pilot plant
Withunrivalledexperienceand expertisein processingtechnology,ChemtechInternational
Limited is in a positionto design,manufacture andinstall completeprocessing plants.This includes theprovision of controlsystems offering thevery latest incomputer-basedtechniques.
A purpose-builtlaboratory equippedwith a full range ofprocessing andancillary equipment isavailable for trial andassessment. Inaddition, pilot plantscan be supplied forfield testing on acustomer’s ownpremises.
Chemetator model 216 - F1GL
GelatineChemetator cooling of gelatinehas been adopted by all themajor manufacturers.The unique oval tube modelallows highly concentratedproduct from the evaporator tobe continuously chilled andthen gelled in a short holdingtube before being extruded innoodle form direct onto theband dryer.
MarshmallowThe oval tube facility allowscooling of aerated marshmallowand extrusion in final form whererequired.
Peanut ButterSmooth and crunchy peanutbutter can be cooled to fillingtemperatures on Chemetatorequipment.
WaxesThe ability of the Chemetator toproduce a very small crystal sizeand to extrude in a solid formhas proved advantageous in anumber of processes involvingwax based products. Inparticular shoe polish, printingink compounds and electricalcable insulants are now cooledon Chemetator equipment.
16205 Aaron Eng 07/04
Optimum DesignConstructionThe key to the system is the horizontalheat transfer cylinder, jacketed for directexpansion refrigerant. The standarddesign carries a scraper shaft withdiametrically opposed rows of floatingtype scraper blades mounted within thecylinder. The shaft can easily be removedfrom its bearing and coupling support forcleaning, inspection and maintenance.The removable heat transfer tubes arenormally made of nickel for optimalefficiency and wear resistance. As theshaft rotates, the blades continuouslyscrape the inside diameter of the tube ata rate of approximately 1000 scrapesper minute ensuring optimal emulsioncrystallisation, mixing and heat transfer.
MODEL
Laboratory Unit
111
6" Production Units
212
214
216
10" Production Units
315
317
Note: Configurations of Multi-Cylinder units can be constructed.
HEATTRANSFER AREA
(nominal)m2 ft2
0.06 0.75
0.25 3
0.54 6
0.84 9
1.25 13
1.75 19
CYLINDERINTERNALDIAMETER
mm ins
75 3
154 6
154 6
154 6
250 10
250 10
CYLINDERLENGTH(nominal)
mm ins
300 12
620 24
1220 48
1820 72
1600 63
2230 88
TECHNICAL DATA
CHEMETATOR CYLINDERASSEMBLY DETAIL
PRODUCTOUTLET
PRODUCTINLET
HEAT TRANSFERMEDIUM INLET
HEATTRANSFER
TUBE
SCRAPERSHAFT
ONE PIECESTAINLESS
STEEL COVER
INSULATION JACKETSCRAPER
BLADE
HEATTRANSFER MEDIUM
OUTLET
Chemtech International Limited448 Basingstoke Road, Reading, Berkshire RG2 0LP, England.
Telephone: (44) 0118 986 1222 Fax: (44) 0118 986 0028 E-mail: [email protected]. Website: www.chemtechinternational.com
Chemtech Oiltek Sdn. Bhd.Lot 6, Jalan Pasaran 23/5, Kawasan MIEL Phase 10, 40300 Shah Alam, Selangor Darul Ehsan, Malaysia.
Telephone: +60 (0)3 5542 8288 Fax: +60 (0)3 5541 8288 e-mail: [email protected]
