Brink Mist Eliminators Brochure - DSD Chemtech

BRINK MIST ELIMINATORS INDUSTRIAL SOLUTIONS FOR CLEAN AIROpacity/Sub-Micron Mist– Before BrinkTechnology you can clearly seeBRINK www.mecs.dupont.com

GENUINE BRINK FIBER BEDS . . . BRINK MIST ELIMINATORS –QUALITY, SERVICE, TECHNOLOGYDr. Joseph Brink developed the first fiber bed misteliminator in 1958. These first mist eliminator deviceswere developed to solve air pollution issues in phosphoric acid plants. The positive results of this pioneering application led to the decision to commercializeIn process gases and equipment protectionThe presence of mists in a process gas stream can causeproblems associated with product purity, safety anddecreased production because of increased maintenance. Fouling of catalysts, instruments and other piecesof equipment as well as serious corrosion of processequipment can be costly results of these aerosol mists.Mists can also affect both the design and operation of aprocess by requiring more exotic and expensive materials of construction and by dictating how a process isrun due to misting and operating conditions which arenot favorable for maximum output or yield. Brink mist eliminator systems have solved many such processproblems and excel at collecting the very difficult toremove submicron size mist particles from gas streams.HOW IS MIST FORMED?Mist can be formed in manufacturing processes inthree different ways:this new air pollution controltechnology and offerBrink fiber beds to otherindustries. Building on the earlysuccesses and steadily improving these custom engineered devices, has led to over 6000 installationsthroughout the world.Air pollution control2Collection of spray and coarse mists from stack effluents may reduce emissions of a pollutant to acceptablelevels on a pound per hour basis. However your plantmay still be faced with a serious air pollution problem.Submicron mists generate visible and persistent plumeswhich can be seen for miles. Although generally not aneconomically significant loss of product or a poundsper day emissions limit, these submicron mists are themajor cause of stack opacity and environmental citations for air pollution. Brink mist eliminator systemscan be designed to provide an essentially invisible stackplume. These systems have been in successful operationfor over 50 years in a variety of process applicationsworldwide. Mechanical forces may break up or “atomize”a liquid to form a mist. Cooling of a gas stream may result in thecondensation of vapor to form a mist. Chemical reaction of two or more gases may takeplace at temperatures and pressures where thereaction products are mists.Mechanical forces typically create mists with largeparticles while particles formed by condensation andchemical reactions are usually very small (submicron).WHY BRINK? Broadest selection of mist elimination designsand products Best technical support in the industry Worldwide manufacturing and availability Over 50 years experience with mist collection Thousands of installations in hundreds ofapplications worldwide Unique solutions for any application Patented mist eliminator designs

. . . FOR ALL YOUR MIST COLLECTION NEEDSWHAT IS A FIBER BED MISTELIMINATOR?PARTICLES ARE COLLECTED IN THREEDIFFERENT WAYS:All Brink Mist Eliminators operate in a similarmanner. Gases containing mist particles are directedhorizontally through a fiber bed. Particles collect onindividual fibers of the bed, coalesce to form liquidfilms which are moved through the bed by the gasflow, then drain off the downstream face of the bed bygravity. Fiber bed mist eliminators are typicallyinstalled in a vessel or tank. Collected liquid iscontinuously drained from the tank.Inertial impactionA design innovation is the addition of a second coarsefiber layer on the downstream side to facilitatedrainage and control re-entrainment.Particles larger than three microns are collected whentheir momentum prevents them from following gasstreamlines around fibers. They leave the streamline,strike a fiber and are collected by the fiber.Direct interceptionBetween 1.0 and 3.0 micron size particles tend to followthe gas streamlines as they flow relatively close to fibers.A 1.0 micron particle, for example, passing with-in 0.5micron of a fiber will be collected by the fiber.SCREENDRAINAGE ANDRE-ENTRAINMENTCONTROL FIBERSMIST LADENGASCLEAN GASTO VENTLIQUIDTODRAINCLEANGAS OUTCOLLECTINGFIBERSMISTELIMINATORBrownian diffusionExtremely fine particles have random side-to-sidemovement caused by collisions with gas molecules. A0.1 micron particle will have about 10 times theBrownian movement or random motion of a 1.0 micronparticle, greatly increasing the probability of collisionwith a fiber.MIST LADENGASLIQUIDDRAIN3

GENUINE BRINK FIBER BEDS . . . ES – ENERGY SAVERThe ES (Energy Saver) Fiber Bed Mist Eliminator incorporates a special wound fiber, computer controlledquality, and a bi-component design.ES elements are made with our proprietary, one-ofkind wrapping machine. The machine wraps the fiberin a unique angled pattern, which facilitates drainage.In addition, the pressure drop across the element ismonitored during the entire wrapping process ensuringthat all mist eliminators in a set are packed to auniform pressure drop.ES element benefits include: Up to 20% more gas throughput capacity per element,with no loss in collection efficiency or penalty ofincreased pressure drop. Re-entrainment of collected mist in exit gas isvirtually eliminated.ES, FP, HE “PLUS” MODELS Periodic repack is easier and less expensive with the ES.SCREENDRAINAGE ANDRE-ENTRAINMENTCONTROL FIBERS(ES, FP, HE “PLUS”)MIST LADENGASCLEAN GASTO VENTIn a conventional fiber bed, liquid draining on thedownstream face of the fiber bed is sometimesre-entrained in the exiting clean gas. This re-entrainment becomes worse with higher loadings of mistand/or higher flow velocities.Sect. AALIQUIDTODRAINThe ES includes an engineered layer of coarse fibersdownstream of the finer collecting fiber. Liquid thatwould re-entrain from the fine fiber bed is recollectedand drained in the re-entrainment layer.COLLECTINGFIBERSBI-COMPONENT BED PRODUCTS:FIBERBED MISTELIMINATORTHE HEART OF THE ES, IS ITSBI-COMPONENT FIBER BED DESIGNSect. AAThe standard ES element diameter is 2 feet (610 mm)and elements are available in lengths from 6 to 24 feet(1829 to 7315 mm). The wound fiber may be glass,polyester, polypropylene, or special polymeric fibers.The element cage can be fabricated from any weldablemetal or can be made of fiberglass reinforced plastic orpolypropylene.The ES – Energy Saver incorporatesa computer controlled angle wrapVESSELWALL4DRAINTUBESHEET

. . . FOR SUBMICRON MIST COLLECTIONHE – HIGH EFFICIENCYFP – FIELD PACKThe HE (High Efficiency) Fiber Bed Mist Eliminatoris the original design that was developed in 1958. HEelements are still in use in many applications, and aretypically used for soluble salt applications.The patented FP (Field Pack) Mist Eliminator designenables fiber bed mist eliminator users to replace theirfiber packing in the field without returning theelement cage to the factory for fiber replacement.The HE element consists of fibers which are packedbetween two concentric cylindrical screens. HEelements vary in diameter from 8.5 inches to 24 inches (216 mm to 610 mm), and are available inlengths up to 288 inches (7315 mm).This design utilizes a special mat material that is sewnto form a sleeve or tube. This sleeve is clamped to theinner element cage. An outer screen is then added tothe element for further stability.Fibers may be glass, polypropylene, polyester, orceramic. The screens can be fabricated from anyweldable metal or can be made of fiberglass reinforcedplastic or polypropylene.The HE “Plus” adds a re-entrainment control layersimilar to the ES design.FP elements are available in glass or polyester fiber.Existing type ES elements can usually be modified toaccept FP style packs. Efficiencies and pressure dropsare comparable to type ES elements. FP elements areavailable in a wide variety of diameters and lengths.This makes them a perfect fit for applications whichrequire a large amount of fiber bed area in a smallvessel (see page 6 for more details).FP elementsare available in glass or polyester fiber.5

GENUINE BRINK FIBER BEDS . . . INSTALLATION CONFIGURATIONSHANGING STYLE ELEMENTSHanging style Brink elements – also calledCLEANGAS OUTForward Flow, hang from the tube sheet/vessel divisionplate. This configuration features ease of installationand maintenance. In this style, the dirty gas goes in theoutside of the element and the clean gas exits throughthe center core.Standing style Brink elements – also calledReverse Flow, stand vertically on the tube sheet/vesseldivision plate. This configuration permits the use oflonger elements and vessels of reduced size. In this style,the dirty gas goes into the center core of the elementand the clean gas exits through the outside.MIST LADENGASLIQUIDDRAINPrefilters are available for applications whereinsoluble particles in the gas stream cause the usefullife of the fiber bed mist eliminator to be limiteddue to pluggage.PREFILTERSSTANDING STYLE ELEMENTSCLEANGAS OUTMIST LADENGASLIQUIDDRAINPrefilters arereplaceable “bags”that are placedaround the outsideof the element orinside the element,depending on thegas flow direction.These “bags” aremade from a specialmat material that isquite efficient yethas an openstructure to enhancethe dirt holdingcapacity.Prefilters are available in polyester or polypropylene.6

. . . WHEN PRESSURE DROP IS AT A PREMIUMBrink has products available that canlower pressure drop, increase capacity, improveefficiency or reduce vessel size. CONCENTRIC ELEMENTS Increases the element surface areawithout requiring tubesheet modifications. Lowers pressure drop or increases flowcapacity. Available in all element types.SMALL DIAMETER BEDS8" (204 mm) DIAMETERELEMENTS Increases the flow area without increasingvessel size. Lowers pressure drop or increases flowcapacity. Lighter elements are easier to handle. Fewer attachment points required.QUAD BEDSCONVENTIONAL24" (610mm) DIAMETERELEMENTS Retrofitting increases the area withconventional bolting. Lowers pressure drop or increases flowcapacity. Easy to repack.DE-BOTTLENECKINGYou can avoid the extra cost of a flared or lengthenedvessel by using Brink Concentric Fiber Beds.7