Alfa Laval – plate technology

1 Alfa Laval plate technologyIt s all about optimizingAlfa Laval s business activities have one sole focus providing you as the customer with technologies andsolutions that help you optimize a wide range of yourkey industrial processes still virtually all forms of industrial processesinvolve heating or cooling substances of some kind,it is only natural that Alfa Laval focuses strongly onheat transfer technologies and Laval plate technology 3 Optimizing the use of heat energyIn any form of heating and cooling, onepath to greater profitability is to extractmaximum benefit from all the heatenergy already available within thesystem rather than producing or buying expensive additional transfer involves bringing twosubstances at different temperaturesclose to each other, so that one eitherheats or cools the other. This meansthat energy already within the system which is already paid for is simplytransferred to another part of theprocess where it can be put to greatesteffect.

2 This saves you money, savesenergy and reduces the overallenvironmental impact of yourproduction the biggest and best companiesin this field have the resources and theknow-how to provide a comprehensiverange of heat exchanger solutions . AlfaLaval is one of those companies, ableto supply the optimal heat transfertechnologies to meet your transfer technologies the choiceBroadly speaking, shell-and-tube heatexchangers are the large, traditionalsolution, spiral heat exchangers are thesmaller, simple solution and plate heatexchangers are the compact, modernsolution with significantly better thermalefficiency and by far the greatesttechnology development Alfa Laval , we want to provide youwith optimal solutions . Alfa Laval hastherefore focused strongly on plateheat exchanger heat transferPlate heat exchangers are designed tooptimize heat transfer, because thecorrugated plates provide by far thegreatest surface area through whichthe heat can be drawn from one gas orliquid to the other.

3 Despite thissubstantial area for heat transfer, plateheat exchangers are usually relativelycompact. For example, an Alfa LavalCompabloc solution, one of the mostcompact installations currentlyavailable, only takes up about 20% ofthe physical space needed for atraditional design of the channels alsoensures maximum turbulence as eachfluid passes through. This results inmaximum efficiency in transferring heatfrom one medium to the other. plate technology of todayNew designs provide improveduniform distribution and higherdesign pressure areaLocated at the top and bottom ofthe plate , this area is responsiblefor ensuring fluid is distributeduniformly across the entire widthof the plate , eliminating deadspots. This is more complex onmodern units where inlet andoutlet are aligned vertically foreasier piping. Alfa Laval s designsprovide complete fluiddistribution across even ourwidest neckDesigned for lowpressure drop as wellas low velocities forreliable heat transfer zoneCritical for creating the highestturbulence consistent withdesired pressure Alfa Laval plate technologySupport columnInspection coverRoller assemblyMovable coverGasketPlate packCarrying barStud boltFrame plateFrame footProtection sheetBearing boxTightening boltLock washerTightening nutGuide barSupport footAlfa Laval plate technology 5 Working principleThe basic plate heat exchangerconsists of a series of thin, corrugatedplates that are gasketed or weldedtogether (or any combination of these)

4 Depending on the liquids passingthrough and on whether it is practicalto be able to subsequently separatethe plates, for whatever plates are then compressedtogether in a rigid frame to create anarrangement of parallel flow fluid travels in the odd numberedchannels, the other in the Brochure 8 All plate heat exchangers look similarfrom the outside. The differences lieinside, in the details of plate designand the sealing technologies Laval is the largest manufacturer ofplate heat exchanger solutions in theworld. We use plate heat exchangerdesign and manufacturing processesthat are quite simply in a class of theirown: single-step pressing of plates resulting in greater uniformity, less physical stress, thinner plates and more efficient heat transfer patented distribution area design resulting in maximum use of the heattransfer area, the greatest turbulencein the flow, optimum fluid distribution,higher design pressure capabilities and minimal fouling the ability to provide you with a complete range of fully optimized plate heat exchanger designs, sizes and applications that can meet virtually any operational heat exchangers from Alfa Lavalare available: gasketed or welded together (or any combination of these) using a vast range of carefully researched gasket materials and adhesives.

5 As single phase containing two liquids or for two-phase applications containing a gas and a liquid, and serving as condensers, evaporators and reboilers. for a huge range of different temperatures and pressures, and fluids with differing purity, viscosity and solids/fibre content. as two-in-one units because the temperature profile and flow through the unit can be managed exactly as required. for a vast range of different applications, ranging from the most aggressive and demanding environments, such as the nuclear power industry and offshore oil and gas installations, to the processing ofdelicate beverages and difference lies on the insideGlued gasketsShould your operating condition promotegasket swelling, glued gaskets provideincreased reliability, especially for repeatedopenings. Replacement of glued gaskets isnot necessary for servicing. Our oven-curedepoxy affixes the gasket firmly and will notdissolve. Glue-free gasketsGlue-free gaskets provide fast and easygasket replacement on welded plates expandtemperature and pressure limitations to350 C (650 F) and 40 bar 625 Alfa Laval plate technologyNO SHIFTSIDEWAYSP late heat exchanger frame No Shift 5-point metal-to-metal alignment system Keeps plates aligned easilyduring opening and closing Guarantees first time seal Improves reliability againstgasket blow-out Extends gasket lifeSS roller assembly to facilitateopening and avoid wear & tear on carrying barCarrying bar SS profile to allow easyplate movement5-point alignment systemBolted construction (no welded parts) allowingfield assembly and future expansionConnections are available in stainless steel and titaniumLifting lugs or lifting holes for safe & easy handlingStudded port connection allowing increased pipe loadingsIn single-pass units.

6 All connections in frameplate provide maintenance withoutdisconnection of pipingMaximum design pressure up to 30 bar (450 psig). Design temperature up tomaximum180 C (350 F)minimum -50 C (-58 F).Recess to secure bolts safelyThicker frame covers with no reinforcementsmean fewer tightening bolts and easieropening/closingIn multi-pass units: blind flanges & inspection covers availableSuperior bolt closing systemBolted feet for increased stability and fixing to the floorEasy-to-open, easy-toclose tightening system Low torque bearing box and lock washers allow easy opening and closing Simple, one person operation No special tools required Rolled threads eliminategalling and seizing Bolted construction (nowelded parts) allows fieldassembly and futureexpansionHeavy-duty designwithout reinforcement Applies uniform platepressure Eliminates flexing orbending of plates Creates a superior seal Extends gasket lifeFrame standards ASME, U and UM standard PED/CE-mark pvc ALSTMP rotective shroud meetingOSHA requirementDiabon Graphite nonmetallicA composite of fused graphite and fluoroplastic, this unit provides excellentresistance to hydrochloric acid, AlCl3, and other corrosive traditional graphite, Diabon F has no porosity or permeability.

7 Itresists cracking and breakage during handling and plateWelded channels for process fluids allow aggressive and difficult fluids to behandled in a plate heat exchanger and expands the pressure range. Thegasket exposure is minimal on the welded plateComposed of plates pressed simultaneously and laser welded at the port, thisis designed for applications where additional reliability against intermixing isnecessary to prevent catastrophe. Failure of one plate results in externaldetection without interleakage. The second wall provides a double barrierbetween fluids, meeting local health code plateWith 17 mm channels free of contact points, this plate is ideal for fluidscontaining fibres or coarse particles. Each channel has been designed toeliminate bridging of solids in the entrance channel for agressive fluidGasketed channel forcooling mediumPeripheral weldPlate innovations8 Alfa Laval plate technologyFeedVapourConcSteamCondPlate condenserCompact design plate condenser replaces traditional large units.

8 Customizedconnections for large volumes of vapour, specific plate pattern, asymmetricplate gap to optimize heat transfer and minimize pressure drop make it suitablefor evaporatorCompact and economically efficient, theplate evaporator/condenser replacesconventional large and expensive fallingfilm units. Its deep channels, large portsand laser welding allow vacuum and lowpressure evaporation and condensing forboth aqueous and organic Laval plate technology 9 Alfa Laval plate heat exchangersolutions can help you:Boost performance and capacityAlfa Laval plate heat exchangers areextremely compact. Due to the verysmall footprint, often only about 20% ofthe size of traditional installations, newequipment can be installed even inextremely confined spaces, to boostthe performance and capacity ofexisting much greater flexibility andscalabilityAlfa Laval plate heat exchangers are allbased on a design that is inherentlyflexible. The number and specificationsof the plates can simply be increased,reduced or altered as the capacity yourequire varies over time.

9 This meansless capital tied to smoother operationOperations that use Alfa Laval plateheat exchangers are easier to control,and have much lower start-up of the vastly greatercontrolled turbulence in the flow, theyare much less affected by troublesomefouling than traditional solutions . Theyare also subject to less vibration, stressand material down on maintenance, serviceand cleaningAlfa Laval plate heat exchangers canmake a radical difference to yourcompany s maintenance and serviceschedules, and the down time thesecan involve. These solutions featuresignificantly better flow patterns withmuch greater turbulence than shell-and-tube heat gives you much greater heattransfer efficiency with the major addedbenefit of less fouling and virtually nocorrosion or erosion. This results infewer, much quicker inspections andrapid cleaning. And the Alfa Lavalsolution means that all cleaning orplate replacement work can be doneon site and within the physical footprintof the Alfa Laval pay-offTo achieve maximum profitability in modernprocess industry, it is important that your companycan heat and cool a wide range of substances: with great precision at low overall cost with maximum reliability with a minimum of energy consumption in an environmentally responsible Alfa Laval plate technology Acquire installations that bring youmajor cost savingsAlfa Laval plate heat exchangers areexceedingly compact in size.

10 Ininstallations that require exotic metals,special alloys and other costlycomponents to deal with aggressivemedia, this means significant savings ininitial purchase size and low weight also meanlow initial installation cost, while highheat transfer efficiency means lowoperating costs throughout the unit sworking life. And the major reduction inmaintenance requirements comparedwith traditional equipment also cutsservice costs right minimum environmentalimpactEnvironmental impact is becoming anincreasingly critical concern, and AlfaLaval plate heat exchanger solutionsprovide you with a way of reducing ensuring maximum heat recoveryfrom any and every one of yourindustrial processes, as well as the useof less cooling medium and lessheating medium, Alfa Laval technologycan give a serious boost to the long-term socio-political acceptability of yourindustrial a viable technology upgrade pathShell-and-tube heat exchangers aresolutions that do indeed work, but arefundamentally expensive, heavy andessentially Laval plate heat exchangersolutions are equally well proven yetthey are also light in weight andrelatively inexpensive in terms of capitalcost, installation cost, operating costand service cost.