Dedert originally introduced mechanical vapor recompression to the corn wet milling industry over 4 decades ago. This is a reduction of up to 99% compared to a 1 effect steam driven evaporator. Tetra pak evaporator falling film mvr evaporation system. The encon mechanical vapor recompression mvr evaporation process involves our forced circulation flash evaporator utilizing mechanical vapor compression. The key point is that the secondary steam can be recycled after enthalpy increase by mechanical compression, greatly decreasing the demand of fresh steam and. To produce the equivalent steam from one pound of 234 f evaporator condensate requires 999 btu. Mechanical vapor compression mvr or mvc mechanicalvapor compression evaporator, the principle is to use the secondary steam whichis produced through compressing the steam by the steam compressor, secondarysteam heat and temperature is increased by the compressor, steam compressedinto the evaporator as the heat source, again makes the raw material liquidstart. Caloris concentrix mvr evaporator compact evaporator. Andritz mvr evaporators sometimes referred to as a vapor compression evaporator removes water from mill liquors or effluents with minimum energy consumption and maximum plant availability while delivering high condensate quality. Mvr designs can theoretically provide the efficiency of 100 equivalent effects of a multiple effect evaporator design. Mvc evaporator installation wastewater evaporator manufacturer.
The cost of electricity to drive the compression is a factor in the equivalent effect comparison. Envidest mvr ff 30 2500 is the latest vacuum evaporator, by steam mechanical compression, of falling film and forced circulation, for flow rates between 302500 litershour. Mechanical vapor recompression mvr plants typical mvr evaporators with fan type recompressor 2features. Evaporators of various types such as rising film, forced flash, falling film and plates have been designed, fabricated and supplied to various industries around the world, such as. Apv two stage falling film plate evaporator with mvr. Evaporators vacuum evaporation envidest mvr ff 30 2500. Apv two stage falling film plate evaporator with mvr mfg.
This selection is done based on the wastewater properties. Pdf features of multieffect evaporation desalination plants. These evaporator components are similar to steam driven systems, but with the addition of a mechanical compressor. This study focuses on applying pinch analysis to an industrial milk evaporator case study to quantify the. Mechanical vapor recompression china mechanical vapor. An mvr unit will be preferable for a large unit, thanks to the reduced energy consumption. Depending on the size of the unit, riggers may be needed to unload the evaporation sections and put them into place. This system reclaims over 33 million gallons of water per year for local ground water recharge and irrigation. The energy source of the system is the latent heat released when the vapour evaporated from wastewater is condensed. Total site heat integration of multieffect evaporators with. In some cases multipleeffect evaporators have been converted to mvr to take advantage of changes in the relative cost of electric power and steam.
The horizontal tube evaporator is the only type of chemical evaporator in which the heating medium is inside the tubes. Easy to fit into your facility and quick to install, its stateoftheart design makes it the compact of choice for a wide variety of applications. Jan 25, 2017 apollo evaporator mechanical vapour recompression this feature is not available right now. Principle of evaporation in an mvr evaporator to condensate tank to circulation pump. Mechanical vapour recompression with turbo fan impeller technology. High quality, reasonable price and onestop exporting service.
Petar sabev varbanov, jiri jaromir klemes, sharifah rafidah wan. Mar 18, 2016 mechanical vapour recompression with turbo fan impeller technology. The envisol mvr is designed to work efficiently at low temperatures without steam or coolants, reducing operating costs drastically. The energy savings possible through the use of a recompression evaporator are significant. The evaporator is suitable for the production of the complete range of dairy products. Mvr mechanical vapor recompression evaporation technology is noticeably advantageous in energy conservation, reducing energy cost by 34 compared with conventional twoeffect evaporator.
Mvr evaporators are referred to the mechanical thermal compression evaporator. Petar s varbanov, rongxin su, hon loong lam, xia liu, jiri j klemes. Mechanical vapor recompression mvr is an energy recovery process which can be used to. Pdf this paper aims to apply total site heat integration tshi to. Mvr evaporator mechanical vapor recompressionchemical process. The principal advantage of horizontal tube evaporators lies in.
Evaporator technology varies from tubes to plates, inside versus outside, and up, down or flooded. Appropriate placement of vapour recompression in ultralow. Andritz mechanical vapor recompression mvr evaporator. Evaporator with large surface up to even 6000 m, dt heating to process side 45 k, tube length up to 26 ms, high efficiency in heat recovery between inlet and outlet liquors, evaporator with multiple liquid passes. Apollo evaporator mechanical vapour recompression this feature is not available right now. Fourth edition ehb599 an invensys company apv evaporator hndbook 12600 11. The patented caloris concentrix mvr evaporator delivers the highest available energy and operational efficiencies in a compact evaporator design, with models evaporating up to 100,000 pounds 12,000 gallons per hour of water per hour at an efficiency of up to 200 pounds 24 gallons of water evaporated per kilowatt of power consumed 42 wattsgallon. Pdf is mvr an efficient alternative to optimize the. Evaled mvr series mvr evaporator is based on the forced circulation technology through a falling film heat exchanger. Features of multieffect evaporation desalination plants article pdf available in desalination and water treatment 5412 april 2014 with 11,180 reads how we measure reads.
Appropriate placement of vapour recompression in ultralow energy. Mvr energysaving evaporator mvr china mvr energysaving. By using this design, the encon mvc evaporator allows for minimal scaling, maximum uptime, and low operating costs. Mvr stands for mechanical vapor recompression and is an evaporator driven by mechanical energy or electricity. The specific objective of the study was to analyze the energy consumption of the mechanical vapor recompression mvr milk evaporation system at humboldt creamery. Andritz mechanical vapor recompression mvr evaporators utilize proven lamellatype heating surfaces for all applications. The process is actually an open heat pump process and therefor the drive energy demand is depends on delta t between condensing vapor and evaporating vapor. The results of the mvr energy consumption rate are compared to the energy consumption of typical multieffect evaporators.
Whereas steam jet compressors only compress part of the vapor, mechanical vapor recompressors recycle all of the vapor leaving the evaporator. The cubix m evaporator is the only compact forced circulation tubular mvr evaporator on the market that delivers low temperature processing using a highreliability, rotary lobe compressor. Mvc evaporator process description principles of operation. Mechanical vapour recompression mvr, external product preheaters, and multistage condenser systems may be incorporated into the process. Pinch analysis of an industrial milk evaporator with vapour. A significant step change in energy efficiency for milk evaporators is achieved in this study by appropriate placement. The application of forced circulation allows to optimize heat exchange and as a result a lower energy consumption. According to specify conditions, tvr evaporator or mvr evaporate have its own advantages or disadvantages. Typical mechanical devices used in an mvr design are. This evaporator features a 200 hp roots blower and has 316 stainless steel plates and separators. For instance, a 3effect evaporator circuit may be installed using mvr to. The evaporation process and associated preheating has a significant impact on the desired functionality and microbiology of the powder. Installation for the encon mvc evaporator is very straight forward and is generally handled by facilities, maintenance, or plant engineering personnel.
Pdf is mvr an efficient alternative to optimize the energy. It is a new type of high efficiency evaporation equipment developed in the late 1990 s. Systems may consist of only a single effect or involve multiple effects. The horizontal tube evaporator figure 2 is the oldest type of chemical evaporator, although other improved types are now more commonly used. The mvr fan acts like a heat pump and takes the steam back to the temperature level, where it has enough heat to evaporate the product. Using dsi direct steam injection we quickly move product from one. Pdf total site heat integration of multieffect evaporators with. Mvr was successfully tested in a locomotive under the name of. Mechanical vapor recompression mvr evaporation process. Mechanical vapor recompression evaporators swenson technology. Saving energy becomes more and more a global issue, the energy demands and costs are steadily increasing. The encon mvc evaporator can be used for wastewater minimization, distillation, desalination, and potable drinking water. The largest single body mvr evaporator built 1968, by whiting co. Evaporation plants heated by mechanical vapor recompressors mvr require particularly low amount of energy.
We are professional mechanical vapor recompression manufacturers and supplier in china. The envidest mvr fc evaporators represent a new concept of evaporators with forced circulation by means of mechanical vapour compression in order to produce 2502,000 l h of distillate. The offshore industry freshwater generators the fjell stord mvr evaporator. Mvr or mechanical vapor recompression also known as mvc is a technology where the vapor is compressed in a fan or a. Vaporcompression evaporation is the evaporation method by which a blower, compressor or. Mvr evaporators are typically a single effectstage system used to. Can be re configured to customers individual needs. We can produce mechanical vapor recompression according to your requirements. Tetra pak evaporator falling film mvr provides a fully automatic and continuous evaporation system. Preheating system of the water to be treated for equipment startup for two hours using electrical resistors installed inside the boiler or by vapour supply. Its working principle is the secondary steam produced by evaporator through the mechanical thermal compressor similar to the blower, the temperature ascend to 5 8. The epcon mvr evaporator only uses 840 kwh per ton evaporated water. The energy saving technology for evaporation now, most popular is thermal pump evaporator.