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When product-sensitive and energy-saving applications are involved, the EVAPplus plate falling film evaporators are exactly the right choice. State-of-the art technology ensures high-efficiency concentration of juice from sugar beet and cane. The special feature of EVAPplus is the combination of tube and plate evaporators. The plates are arranged in such a way that two separate flow channels result: a tubular channel with 6 or 9 mm diameter for the juice and a corrugated channel for the condensing steam or
vapour. The plate packs are fully welded without the need for gaskets.
Retrofitting Robert-type evaporators
The advantages of the EVAPplus can also be used to achieve greater efficiency by retrofitting existing Robert evaporators. In most cases no changes are necessary to buildings, foundations or the static design of the plant. The calandria from the old Robert evaporator is simply removed and replaced with an EVAPplus plate pack and the respective distributor. With minimum expenditure the heating surface area and the system efficiency is considerably increased.
Simple to clean
The EVAPplus can be easily and quickly cleaned to maintain its maximum performance. Evaporators used for processing beet sugar juices are cleaned at the end of each campaign. When processing cane sugar juice, a sensible cleaning cycle is every one to two weeks.
Outstanding features
- High density of heating surface (170 m²/m³ or 240 m²/m³)
- Outstanding overall heat transfer values
- Low temperature differences
- Short residence time of the of the juice in each effect
- Low juice colour formation
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APV PLATE EVAPORATORS
During the plate evaporation process, liquid is pumped between thin plates with the heating medium on the mating surfaces. The product is then evaporated with the vapour generated forming a high velocity core. This expansion in volume causes a high-velocity, thin film on the heat exchange surface providing efficient heat transfer.
Plate evaporators should be considered for applications that have:
* Capacities up to 27,000 kg/h water removal
* A need for future expansion
* Limited head space
* A particle size smaller than 600 Micron
APV Product Range:
* Rising/falling film plate evaporators
The original plate type evaporator.
* Falling film plate evaporator
Combining all the advantages of the original Rising/Falling Film Plate Evaporator with the added benefits of even shorter product residence time and larger capacities.
* Paravap
The APV Paravap is specially designed to process high solids concentrates or those having non-Newtonian viscosity characteristics.
* Paraflash
For products which tend to crystallize during concentration or those that contain a high percentage of suspended solids.
APV Plate Evaporators Features/benefits:
* Improved product quality.
* Higher product concentration.
* Low liquid holdup.
* Easily cleaned.
* Flexible capacity.
* Low installation costs.
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In the food industry, in the organic and chemical industry, and for wastewater treatment.
Some advantages of the rising-film SIGMASTAR®.
Superior product distribution due to the thermo-siphon principle. As product boils and rises in the tube, fresh product automatically rises to refill the tube. This distribution technique operates independently of the feed rate, allows a high degree of flexibility and the possibility of turn down.
Very short residence time; the product is in the SIGMASTAR® for less than a second. This is due to the short flow distance and the high product film velocity. This feature guarantees a gentle treatment of the product.
Low pressure losses across the tubes, a benefit of the short tube length.
High vapour velocity in the rising film, which allows the processor to achieve high concentrations and viscosity.
Clearly defined product flow path. There is no chance of local over-concentration.
High heat transfer co-efficients are obtained even when the feed temperature is lower than the boiling temperature.
Compared to other evaporizer systems less expensive for high grade materials of construction.
Easy assembly and dismantling. A change in the size of the heat exchange surface by varying the number of heat exchange plates makes it possible to create more compact systems.
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This is one possible realisation of a plate evaporator. In this case it is a kettle-type evaporator with extend shell.
Other types of two phase units are possible such as condensator, desuperheater or Dephlegmator.
We are able ot adjust the design to your needs, feel free to contact us. We are looking forward to fulfill your demands.
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Evaporators
Since 1908, evaporators are planned, designed and delivered world wide for different fields of application at the location of the ANA-Verfahrenstechnik GmbH.
This longtime experience is to you at the disposal. We design the evaporating plants according to customers’ requirements. We deliver units ready to use as well as single components.
ANA- evaporators come up to all requirements in view of product attributes, operator convenience, reliability and economics. Such requirements are very different in several ranges where we operate.
Industrial applications follow in the food industry, pharmaceutical and chemical industry.
Evaporating plants of ANA-Verfahrenstechnik GmbH are used to concentrate:
* milk, whey and derivatives
* fruit juice like e.g. from citrus fruits incl. aroma recovery
* starch and beet sugar juices
* essences from coffee and plants
* glue and gelatine
* acids, bases and salts like sodium aluminates, sodium sulphite and – hydrosulphide
* organic and inorganic solutions like lactam water as well as
* sewage
In ANA- evaporators following constructions are used:
* down-draught evaporator
* cimbing evaporator
* recirculation evaporator
* forced-circulation evaporator
* falling film evaporator and
* agitator evaporator
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Fives Cail has been providing outstanding evaporators to its customers for more than 150 years. Drawing on this long experience, the Group continues to revolutionize evaporator technology by efficiently adapting the falling film to cane sugar processing. It has built the world's largest evaporator, with an exchange area of 7,540 m2.
Fives Cail now offers 3 distinct evaporator designs perfectly adapted to beet and cane sugar plants and refineries: rising film evaporators, and distinct falling film models for beet and cane sugar.
With more than 500 units sold, Fives Cail evaporators are acknowledged for their excellent heat-exchange performance, minimal colour increase and entrainment.
Easy installation
Local fabrication ensures rapid delivery and lower cost
Easy adaptation: small footprint; outdoor installation possible; easy integration in existing multiple effect stations
Outstanding performance
High heat-exchange coefficient for both beet and cane applications thanks to specific and well adapted designs
Low ΔT on all juices (high or low brix)
Unrivalled reliability
Integrated skirt protects the tube bundle from vibrations
Proven designs ensure maximum sugar yield
Easy maintenance
Falling film (beet design): low risk of fouling and minimal juice colour increase thanks to short retention time
Falling film (cane design): removable upper part facilitates cleaning (cleaning frequency reduced by 2 to 3)
Fives Cail's equipment for evaporation :
Falling Film Evaporator
Rising Film Evaporator
Tubular Juice Exchanger
Barometric and multi jet condenser
Optimise your boiling house
Control brix in your evaporator by installing our Hydrotrac or Monotrac probes.
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THERMOKEY shell and tube evaporators are designed to provide its clients with the best solutions available in air-conditioning and in refrigeration.
Different models with range capacities from 20 kW to 1700 kW at nominal working conditions, with a number of independent circuits which can vary from 1 to 4. In order to provide a fast and clear description of the product, a specific order code table has been prepared. This table provides a whole series of standard variables and special requirements.
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The Techne Sample Concentrator accelerates the concentration of large numbers of samples in a matter of minutes where traditional methods can take hours. It is ideal for the life science researcher and scientist; designed for applications such as sample preparation for analytical techniques including drug screening, hormone assays, chromatographic analysis and scintillation counting.
Evaporation is increased by passing an inert gas over the surface of the sample. The gas travels through the unique patented gas chamber to the samples via the needles. The needles are set into a silicone matrix and can be spaced to fit any combination of tubes.
The unit is light and compact enough for convenient use in a fume cupboard when toxic solvents are being evaporated.
Needles The needles are made from high quality stainless steel and are specially designed for use with the Techne Sample Concentrator. The needle configuration can easily be adjusted to fit any combination of tubes, from 26mm test tubes to 0.5ml microcentrifuge tubes. Where corrosive
solutions are being used, Teflon coated needles are available.
The Sample Concentrator's gas reservoir is mounted on a fully adjustable stand for accurate height control.
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VLM Sample Concentrators are a time saving alternative to rotary evaporators, if there are many samples to be processed. For this purpose nitrogen is distributed by the gas dosing unit and introduced into the test tubes, flasks, chrom. vials, micro centrifuge tubes, or wells of microtiterplates The flow of nitrogen can be individually adjusted. The evaporation cold is compensated by the metalblock thermostats thus there is a constant temperature. Complete systems for 16,24,48, 96 (micortiterplates) are available with a convenient lift or - for small budgets - with a stand.
If samples have to be concentrated to a rest volume we recommend the EVA VIS model, which allows to watch the first row of samples placed into heating block with vertical slits. The evaporators shall be placed run in a hood but there is also a cabinet available you will find among accessories. For more information please visit our VLM Laborshop (www.vlm-laborshop.de) or give us a call 49 5205 87 963-0
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The HT-24 Workstation
The HT-24 is a simple, large capacity, stand-alone, space-saving machine centred around two HT-12 Series II evaporators mounted on a small footprint trolley. It has the standard evaporator capability, remote control and data logging but gives faster processing by allowing independent operation. It is easy to use, reliable, robust and safe.
The HT-24 gives the user the option of simultaneously evaporating 2 different solvents, providing they’re not reactive. Other system features are sample integrity, rapid defrosting, and pullout sample shelves for loading/ unloading evaporators.
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