May 01, 2014 agitated thin film evaporator maze vinoth. Us4888442a reduction of free monomer in isocyanate adducts. A wide variety of thin film evaporator agitated options are available to you, there are 187 suppliers who sells thin film evaporator agitated on, mainly located in asia. Falling film evaporator design our falling film evaporator is the simplest and most commonly used type of film evaporator. Typical applications our film evaporators are widely used in the. Ketav consultant leads by virtue of superior engineering design capabilities, manufacturing excellence and a project based approach committed to deliver high performance total evaporation solution customized to our client requirement. The outstanding heat transfer rate for hot solid products enables cooling of large amounts of solids in a compact machine compared to usually used cooling screws and without cooling air. These devices can process extremely viscous to 100,000 or even 1 million cp, heatsensitive or crystallizing liquids, as well as slurries. Vertical agitated thin film evaporator downloads 3v tech. Multiple effect evaporation plant falling film evaporation plants forced circulation evaporation plants combination evaporation plants natural circulation evaporation plants caustic recovery plants product concentration plants salt recovery. Atfd agitated thin film evaporators manufacturer in india.
Manufacturer of evaporators plant, mee,multi effect evaporator,atfd,atfe, agitated thin film dryer, agitated thin film evaporator, heat exchanger,zero liquid discharge. The flow structure and mixing characteristics of a highviscosity fluid in an agitated thinfilm evaporator with vertically aligned multiple blades were investigated by measuring the material. The liquid is distributed in the form of a thin film on the heated wall where the heat transfer takes place. The current paper reports on two modifications that have improved the design and performance of these evaporators. Company is manufacturer of multiple effect evaporation plant for waste water zero discharge from more than 12 years. Due to its inherent design features, it is ideal for thermal treatment of solutions and heat sensitive products, where reduced operating temperatures and vacuum operating pressures are desirable. Thinfilm evaporation is applied in heat exchangers called thinfilm or thinlayer evaporators. In some applications, agitated thin film evaporators are, in fact, the only evaporators that will work.
Agitated thinfilm drying of spinach juice request pdf. Evaporators with direct heating the use of solar heat for the production of glaubers salt has been described by. Cfd analysis of flow pattern in the agitated thin film. The agitated thin film evaporator consists of a jacketed shell having a machined surface on the inner side. Liquids with viscosities above 2,00,000cps can be handeled in these evaporators. The feed enters evaporator at top, tangential to shell and gets distributed along the shell by the distributor.
Download pdf vertical thin film evaporator datasheet. The key elements of a vertical thinfilm evaporator are shown here processdesign, mechanicaldesign and physicalproperty parameters must all be taken into account william b. Simulation of an agitated thin film evaporator for concentrating orange juice using aspenplus tm. These blades force the fluid into a thin film, hence the name, over the inner walls of the evaporator.
The typical agitated thin film evaporator consists of a tubular heat transfer area with an external heating jacket and a fastrevolving, inner rotor with flexible or rigid. Construction of atfe the agitated thin film evaporator consists of a jacketed shell having a machined surface on the inner side. Feed is introduced at the top of the evaporator and is spread by wiper blades on to the vertical cylindrical surface inside the unit. The parameters that influence an agitated thin film evaporator process are steam temperature.
Atfd agitated thin film dryer mee,multi effect evaporator. Feed agitated thinfilm evaporators lci corporation. Product concentration evaporation plant get best quote. Falling film evaporators have a number of advantages over their flooded evaporator counterparts. Pdf concentration is one of the important operations in the food industry with applications ranging. Agitated thinfilm evaporators free download as word doc. Agitated thinfilm evaporators atfe, also known as wiped film evaporators wfe are often used to purify liquids with viscosities up to about 100 poise, to. The outstanding heat transfer rate for hot solid products enables cooling of large amounts of solids in a compact machine compared to usually. The model concept for the flow in the thin film evaporator assumes that prior to each rotor blade a bow wave is formed. Agitated thin film evaporators, wiped film evaporators, are designed to spread a thin layer or film of liquid on one side of a metallic surface, with heat supplied to. Thinfilm or thinlayer evaporators have been developed to purify temperatures sensitive products by evaporation.
The typical agitated thin film evaporator consists of a tubular heat transfer area with an external heating jacket and a fastrevolving, inner rotor with flexible or rigid wiper elements. These products are highly acknowledged for its sturdy construction, high strength and corrosion resistance. A feed distributor at the entry point distributes the liquid in a thin film on the heated wall. This plant can be used in researches in evaporation mechanism and enhancement of agitated thinfilm evaporator and separation of heat sensitive and viscous materials with high purity. Wiped film the wiped or agitated thin film evaporator has limited applications due to the high cost and is confined mainly to the concentration of very viscous materials and the stripping of solvents down to very low levels.
Agitated thin film evaporator,thin film evaporator,industrial. Different types of evaporators and their applications. The rotor blades not only deposit the liquid on the wall, but also promote turbulence in the liquid. Welcome to the world of agitated thin film dryer atfd and other heat transfer equipment. Using\ud an agitated thin film evaporator allows for the concentration to be undertaken at low\ud temperature and short residence time with reduced heat loss for heat sensitive\ud material. Manufacturer of evaporators plant, mee,multi effect evaporator,atfd,atfe,agitated thin film dryer,agitated thin film evaporator, heat exchanger,zero liquid discharge system,etp,effluent treatment plant,short path distillation, ahmedabad, gujarat, india. The key elements of a vertical thin film evaporator are shown here processdesign, mechanicaldesign and physicalproperty parameters must all be taken into account william b. Performance evaluation of an agitated thin film evaporator. Firstprinciples nonequilibrium dynamic modelling of agitated thin.
Batchtype pan, natural circulation, risingfilm, fallingfilm, risingfallingfilm, forced circulation, agitated or mechanical thinfilm capacity of evaporator mass of vapor produced mv steam economy ratio of vapor produced to steam utilized mvms energy conservation techniques multiple effects. It is of interest to note that the agitated or wiped. The fed feed will get into contact with the hinged blades attached to the shaft, the high rpm blades shall splash the feed onto the surface. Although tubular evaporators work efficiently with a range of materials, they have met little success in handling heatsensitive, fouling, viscous, and highboiling liquids. Agitated thinfilm drying atfd has been proposed for efficient and mild drying of. Pdf simulation of wiped film evaporator researchgate. Agitated thin film evaporator typically used for fluids which are difficult to handle due to higher sensitivity and viscosity. Translation find a translation for agitated thin film evaporator in other languages. The agitated thin film evaporator further referred as atfe consists of two major assemblies. A distribution ring on the rotor distributes the liquid evenly across the periphery.
Then, the blades fitted at the rotor spread the liquid as a thin film of min. Agitated thin film evaporator,thin film evaporator. Ud technologies specializes in offering comprehensive range of agitated thin film evaporatorwiped film evaporator. A jacketed shell precision machined from the inside a rotor assembly that revolves at high speeds while closely fitting the shell. Agitated thin film evaporator vacuum pump manufactureres. Pdf performance evaluation of an agitated thin film evaporator. Optimisation of an agitated thin film evaporator for. The splashed feed will form a film over the surface of the cylinder and due to the gravity effect, film will slide over the cylindrical vessel. Evaporators with direct heating the use of solar heat for the production of glaubers salt has been described by holland22,23. Concentration is one of the important operations in food industry with applications ranging from the production of condensed milk, paste and purees from fruits. Heat transfer coefficients in an agitated thin film evaporator for concentrating.
The driving speed is adapted to the product being handled, its particular specifications and task. Horizontal thin film dryers are suitable also for applications other than drying like solid particle cooling and product melting. The typical agitated thin film evaporator consists of a tubular heat transfer area with an external heating jacket and a fastrevolving, inner rotor with flexible or rigidread more. An agitated thin film on a heated wall provides several process intensification opportunities. The rotor encapsulated inside the heating shell wipes the fluid film from the walls. The thin film evaporators are designed to handle various products with operating pressures up to o. The resulting vapor normally flows cocurrently with the liquid, in the centre of the tubes. Ketav consultant leads by virtue of superior engineering design capabilities, manufacturing excellence and a project based approach committed to to deliver high performance total evaporation solution customized to our client requirement. The top countries of suppliers are china, india, from which the percentage of thin film. They require a lower charge, as the entire shell in the case of horizontal evaporators or all the tubes in the case of a vertical evaporator need not be filled with liquid as. About balaji thin film technologies the leading specialty in thin film technology. The use of agitated thin film evaporator atfe allows for the concentration to be undertaken at. An agitated thin film evaporator atfe, also known as thin film evaporator tfe or wiped film evaporator wfe, consists of a jacketed shell precision machined from inside and a rotor having blades that maintain a close clearance from the shell. The wiped or agitated thin film evaporator are used to the concentration of very viscous materials and the stripping of solvents down to very low levels.
Film evaporation technology at sulzer chemtech sulzer chemtech, a member of the sulzer corporation, with headquarters in winterthur, switzerland, is active in the field of process. Simulation of an agitated thin film evaporator for. T\a r ornlcf89 289 r, selection of an agitated thin film evaporator for processing a radioactive waste at orml. The top countries of suppliers are china, india, from which the percentage of thin film evaporator agitated supply is 97%, 1% respectively. Download pdf horizontal thin film evaporator datasheet. Construction of atfe the agitated thin film evaporator consists of a jacketed shell having a. Agitated thin film evaporator tfe manufacturers a thin film evaporator tfe consists of two major assemblies jacketed shell and a rotor assembly which rotates at high speed inside the shell. T\a r ornlcf89 289 r, selection of an agitated thinfilm evaporator for processing a radioactive waste at orml. An evaporator consists of a heat exchanger or heated bath, valves, manifolds, controls, pumps and condenser. The liquid flows as a thin film on the inside of heated vertical tubes, driven by gravity. This plant can be used in researches in evaporation mechanism and enhancement of agitated thin film evaporator and separation of heat sensitive and viscous materials with high purity. Flow structure and mixing mechanism in an agitated thinfilm evaporator. Simulation of an agitated thin film evaporator for concentrating.
Mee,multi effect evaporator,atfd,atfe,agitated thin film. Horizontal agitated thin film evaporator downloads 3v tech. Masters thesis, department of chemical engineering, king mongkuts university of technology thonburi, bangkok, thailand, in thai. Ud technologies specializes in offering comprehensive range of agitated thin film evaporator wiped film evaporator. Agitated thin flim dryer atfd agitated thin film dryer.
The present invention is directed to a process for reducing the free monomer content of polyisocyanate adduct mixtures wherein the adduct has an average isocyanate functionality of greater than about 1. Welcome to the world of agitated thin film dryer atfd and other heat transfer equipments. Selection of an agitated thinfilm evaporator for processing. Sms agitated thin film evaporators are available in an unchallanged variety of different rotor designs, horizontal, vertical orientation as well as cylindrical and conical shape for direct current and countercurrent vapor flow. The rotor assembly consisting of different configuration of blades depending upon the nature of product is mounted in the shell. Evaporators vertical agitated thin film evaporator tfel hv. The temperature sensitive product can be both the high and the low boiling component in the mixture.
The liquid film starts to boil due to the external heating of the heating tubes and is partially evaporated as a result. The liquid to be concentrated is supplied to the top of the heating tubes and distributed in a way to flow down the inside of the tube walls as a thin film. The flow structure and mixing characteristics of a highviscosity fluid in an agitated thin film evaporator with vertically aligned multiple blades were investigated by measuring the material. Costeffective thin layer evaporator scraped surface. Manufacturer of evaporators plant,mee,multi effect evaporator,atfd,atfe,agitated thin film dryer,agitated thin film evaporator, heat exchanger,zero liquid discharge system,etp,effluent treatment plant,short path distillation, ahmedabad, gujarat, india. In handbook of industrial drying, 4th ed crc press. The most common designs are jacketed tanks, tubular heat exchangers, plateandframe heat exchangers, and agitated thin film evaporators. Using an agitated thin film evaporator allows for the concentration to be undertaken at low temperature and short residence time with reduced heat loss for heat sensitive material. A vertical thinfilm evaporator consists of two major assemblies. Sep 04, 2015 description of an agitated film evaporator. Costeffective thin layer evaporator scraped surface climbing falling wiped agitated thin film pdf, find complete details about costeffective thin layer evaporator scraped surface climbing falling wiped agitated thin film pdf,falling film evaporator,agitated thin film evaporator,thin layer evaporator from evaporator supplier or manufacturerwuxi nanquan pharmaceutical chemical container factory. Unlimited viewing of the articlechapter pdf and any associated supplements and figures. An lci agitated thin film evaporator tfe or wiped film evaporator wfe or wiffe provides short residence time and open, low pressure drop configuration, allowing continuous, reliable processing of many heat sensitive, viscous, or fouling materials without product degradation.
In some applications, agitated thinfilm evaporators are, in fact, the only evaporators that will work. Heat transfer coefficients in an agitated thin film evaporator for concentrating sugar syrup. Agitated thin film dryervertical atfdv agitated thin film dryerhorizontal atfdh. Agitated thinfilm evaporators are considered ideal for materials that are not easy to handle. The feed enters through tubes and flows downwards under the gravity while the heat is provided through the heating medium generally steam to ensure high heattransfer coefficient. Agitated thinfilm evaporators thin film heat transfer scribd. Thin film thin film evaporator thin film dryer short. Cfd analysis of flow pattern in the agitated thin film evaporator. Us4888442a reduction of free monomer in isocyanate.
It is a process of continuous evaporation whereby the process fluid is pumped into a heated evaporator device which contains rotating internal blades. Optimisation of an agitated thin film evaporator for concentrating orange juice using aspen plus. Manufacturer of waste water effluent evaporation system with atfd for complete zero discharge. Author links open overlay panel nongluk chawankul a supaporn chuaprasert a peter. The focus of this research is on the concentration of orange juice in agitated thin film evaporators atfe. The shaft rotates with a fixed angular velocity and the blades lay out a thin film on the wall of the evaporator. Agitated thin film evaporators, wiped film evaporators. Thank you to provide us some information before starting the download. Therefore they are perfectly adapted to the multitude of separation tasks. The most common designs are jacketed tanks, tubular heat exchangers, plateandframe heat exchangers, and agitated thinfilm evaporators.
Agitated thinfilm evaporators thin film heat transfer. Wiped film evaporation wfe and agitated thin film evaporation are synonymous terms. Agitated thin film evaporator atfe wiped film evaporator. Agitated thin film evaporators wiped film evaporator.
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