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Evaporators - Import export

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For the thermal separation of a mixture a thin film is produced at the heated wall of a cylindrical or conical evaporator. 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. 0.5 mm over the heat transfer surface. The model concept for the flow in the thin film evaporator assumes that prior to each rotor blade a bow wave is formed. In the gap between the rotor blade and the heating surface, fluid is supplied from the bow wave of a highly turbulent area with intense heat and mass transport. This results in a good heat transfer performance even with viscous products. In addition, the formation of deposits is avoided and the intensive mixing also protects temperature-sensitive products from overheating.

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Because of the thermal sensitiveness of products, this separation method is applicable. The sample to be distilled is exposed only for a very short time to the heating substances because the film, created by the wiper, can evaporate very quickly. The residence time of medium on the heating surface is a matter of seconds, thus essentially less than in a reboiler flask, circulating evaporator etc. The evaporated product (operation pressures down to 103 mbar and temperatures up to about 300°C) has to pass a “short path” to the condenser only, which is located in the middle of the evaporator. Evaporators in borosilicate glass 3.3 are available with heat exchange areas 0.02…0.8 m². Evaporators in stainless steel can be heated by a heating jacket to higher temperatures with more heat transfer area for higher throughputs.

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Because of the thermal sensitiveness of products, this separation method is applicable. The medium which is to be distilled is exposed only for a very short time to the heating substances because the film, which is created by the wiper, can evaporate very quickly. The residence time of medium on the heating surface is a matter of seconds, thus essentially less than in a reboiler flask, circulating evaporator etc. Evaporators in borosilicate glass 3.3 are available with heat exchange areas 0.02…0.8 m². Alternative design versions in stainless steel for higher throughputs are available upon request. Please equire.

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A quartz material / glass-encased, spiral-shaped, electrical heating coil with a large surface, which is mounted in a quartz material reflector shell with a handle, allows liquids to be heated indirectly by infrared radiation. This is used for the fast, economical evaporation or concentration of liquids. Due to this principle, only the surface of the liquid is heated very strongly, as the thermal radiation is absorbed even after shallow penetration, thus enabling gentle, uniform evaporation.In contrast to boiling evaporation, there is no loss of substance due to splashes from a moving boiling surface. Since surface evaporators are made exclusively from the material fused quartz / glass, it is possible to use the advantages of the material, such as good IR permeability, heat and heat change resistance, lowest electrical conductivity, exceptionally high chemical purity and resistance as a material. It complies with EC Directive 89/336 / EEC and EC Directive 73/23 / EEC.

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The falling film principle requires an even distribution of the feed liquid. To achieve this distrubution one or more distribution trays are located in the top head of the evaporator over the complete tube sheet. Our proven distribution system makes sure that the inner surface of each individual tube is properly wetted. The liquid film moves down the tubes by gravity force. Heat applied through the tube wall effects boiling-off the light fraction from the film. The picture shows a co-current operating evaporator with vapour and liquid leaving the bottom of the evaporator into the separator vessel.

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Short path distillation is a thermal separation technology operating at process pressures in the range of 1 to 0,001 mbar. It lowers the boiling temperature and is an excellent method for gentle thermal treatment of heat sensitive, high boiling products. The short path evaporator consist basically of a cylindrical body with a heating jacket, a rotor and an internal condenser. The rotor creates a mechanically agitated, thin product film on the heating surface inside of the body. By means of gravity the product flows down in a spiral path, whereby the volatile portion of the product evaporates. The vapour passes by the shortest route and with practically no pressure drop to the internal condenser. The non-volatile portion reaches the lower part of the evaporator and is discharged through the bottom product outlet. The residual vapours and inert gases flow through the vacuum nozzle to the vacuum system.

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The SMS thin film evaporator type HYVAP serves the increasing demand of the pharmaceutical industry for continuous concentration of heat sensitive, viscous and fouling products. Hygienic design for the pharmaceutical industry The HYVAP is a horizontal thin film evaporator that allows easy access and inspection of the interior and controlled and reliable CIP cleaning. The technology of the HYVAP combines the proven advantages of our conventional horizontal thin film evaporators DKH with the following new features: • Cantilever rotor design • Comfortable rotor extraction • No bearing in product space • Mechanical seal in hygienic design • Electro-polished surfaces • Sight glasses for inspection during operation The new HYVAP DZH offers the hygienic design that meets current GMP requirements. The evaporator sizes range from 0.1 m2 for laboratory to 2.0 m2 for industrial applications. LP steam as well as hot water can be applied as heating media.

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For fast determination of thermally-dependent interruptions in electrical circuits or components Avoidance of heat damage when soldering electrical components For heat protection of neighbouring components Shrinking of inner parts for removal of seized taper plugs, pins, plugs or bearing bushes Generation of shrink seats for assembly of inner parts For rapid temperature adjustment during materials testing For simulation of cold-starting conditions with motor-vehicle automatic starting systems Advantages and benefits Highly effective due to outstanding undercooling effect Excellently suited for simple cooling of parts Immediate cooling of smaller surfaces or parts down to –45°C depending on spraying duration Evaporates very quickly without residues Also provides good cleaning effect No negative affects on plastics and insulating materials

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Tubes wound into a spiral shape Coaxial heat exchangers consist of two or more pipe coils, which are routed into one another and wound up in a spiral shape. The primary medium runs in countercurrent to the secondary medium. Fast temperature exchange This countercurrent design achieves a very rapid temperature transition with high efficiency between the liquids. Due to the spiral shape, the rapid temperature exchange between the liquids is achieved in a very small space. No cleaning or maintenance required Another advantage is the encapsulation of both liquids from environmental influences. There is practically no cleaning or maintenance effort due to pollution from the environment. The coaxial heat exchanger also does not require any seals that require maintenance. Condenser or evaporator function Coaxial heat exchangers can be used for both condenser and evaporator functions.

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This chiller is unique on the global market due to its space saving L-form. The additional space required on the laboratory table is zero! Abracadabra: placed on rotary evaporator the RotaCool virtually disappears completely. The RotaCool is a product to provide a dedicated cooling service to all small bench top Rotary Evaporators. Solution for cooling of rotary evaporators Compact, space-saving design Additional extension plate Ideal for conventional rotary evaporators Robust stainless steel construction Easy operation with only three keys LED temperature display

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stainless steel*high shape

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stainless steel*flat form

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Systems & Modules SMS designs, manufactures and supplies complete systems & modules for evaporation, drying and membrane applications. Our scope of supply includes: Consulting / Feasibility Studies Pilot Test Process Design Plant Engineering Project Management Procurement / Manufacturing / Delivery Erection / Installation Start-Up / Commissioning After-Sales Service Skid-Mounted Modules For more than 40 years SMS has been supplying skid-mounted units for the benifit of our customers. The skids are fully assembled, including piping, wiring and testing in the SMS Workshop or in our partners´ workshop. The modular design significantly reduces the required amount of work for assembly and start-up which minimizes the downtime of the existing plant equipment and - as a result - just minor effects occur on the current production.

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Germany

fluid 050/H1 dissolves pollutions like: oils, greases, resins, silicon, residues of anti-corrosion agents, colorbatches, etc. It evaporates without residues. Fluid 050/H1 can be used fast evaporating lubricant during the assembly of rubber parts.

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Germany

Sample Concentrator EVA QS-S -16, Complete System comprising: Stand with holder and Gas dosing unit with 16 outlets, flow individually adjustable 2 m PU-hose, 16 stainless steel cannulas, option: covered with PVDF hose Metalblock thermostat type QS-130V for interchangeable heating blocks VLM Microprocessor controller, digital (PID) with ramp- and timerfunction Temperature stability ±0,1 °C, LED Display resolution 0,1 °C Heating block HB-QS-16-16, 16 holes, depths 65 mm, Ø 16,2 mm for standard test tubes, Option: pressure regulator with manometer, Option: pressure regulator with manometer,

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Germany

Evaporator System type EVA-EC1-L complete for 24 samples, consists of Evaporator unit with motordriven lift, Metalblock-Thermostat Type EC-1V-130, Heating block Type HBV-EC1-24-16 with 24 holes for test tubes OD 16 mm, 24 stainless steel cannulas (1.4571) ID 0,35 mm, 2 m PUR connection hose, A large variety of different heating blocks is available to meet your needs best.

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Germany

Sample Concentrator (Evaporator) system Type EVA-EC2-L for 48 Samples (Test tubes) The complete system for smooth sample concentration with nitrogen comprises: Evaporator unit with 48 stainless steel cannulas, Metalblock-Thermostat EC-2V-130, Heating block HB-EC2-48-16 for 48 testtubes hole Ø: 16,2 mm, hole depth: 65 mm, bottom: round Obviously you can get such a system with heating blocks to your needs. Please contact us: Tel. +49 5205 87963-0 e-mail: info@vlmgmbh.de

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