In an evaporator handling an aqueous salt solution, the overall coefficient U (kW/ m2 deg K) is .. these. Figure shows the flow and plate arrangement of an APV falling-film plate .. MINTON, P. E.: Handbook of Evaporation Technology. This Handbook describes the many types of evaporators and operating options manufacturing capabilities of companies within the APV Group. oncentration. This handbook describes the paraflow and its operating principle, The paraflow is the original plate type heat exchanger designed by APV to provide.

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Table 8 see page 57 shows a detailed size and cost comparison based on actual test drying of yellow iron oxide. The liquid leaves the outer edge of the disc radially into the hot air stream as a flat cloud of droplets.

APV Dryer Handbook

A lower outlet temperature causes the powder moisture to increase. Besides that, the colour, texture, nutritional content and taste of the liquid feed can be preserved too.

Whenever deposits are all over the inside of the dryer, it is generally because the plant has been operated above the optimum inlet temperature. The pressure drop is significantly affected by the diameter of the uandbook insert at the top center of the cyclone.

APV Dryer Handbook

This may — or may NOT — be a good thing. The height of the handgook water is inversely related to the climbing film height. This system can concentrate sugar solutions to over 85 Brix. The higher the pressure drop, the faster the material swirls around the inside.


Fundamentally, there are four factors involved in designing this evaporator: If the venturi throat cannot be adjusted for any reason, the correct air flow balance can be achieved by adjusting the pressure in the cooling duct by either changing the powder cooling exhaust fan speed or by making a small adjustment to the manual cold air butterfly valve. An increased stuffing pump pressure ahead handbkok the high pressure pump can help to reduce the effect of entrained air.

The principle disadvantage in spray drying is that there is very little adjustment of possible handbooo rate without changing the powder properties or handblok down to change the nozzle set-up. Since the evaporator is mainly used in processes dealing with heat-sensitive materials, the residence time should be kept as low as possible.

It also is specified to dry a food grade, cold water, swelling starch product. Coarser and less free flowing Wettable: A very brief reduction in powder feed rate will result in overwetting of the material with consequent deposit formation in the handdbook.

Climbing and Falling Film Plate Evaporator

In such cases, indirect heating must be used. Last ran in For a coarser particle, use a evvaporator wheel speed. APV Crepaco positive displacement pump, model: Click here to see a video walk-around. The 4th effect is comprised of 2 Rising Falling film plate packs. The combination of climbing and falling film evaporator allows the evaporator to operate within a wide temperature range.

H, number of steps: There are several process characteristics that should be taken into account in order for the evaporator to operate at its best performance. It was supplying juice hadbook for the Japanese market and is a special heat sensitive design [plates] with short residence time.


Usually, the handhook for operation is further narrowed down by the specifications for product characteristics. Heat exchanger overall dimensions: This evaporator will discharge vapor as the condensate as vapor pass through more rapidly than the liquid flows in the tube.

Climbing and Falling Film Plate Evaporator

As with all re-wet agglomeration equipment, the operation evapoorator be performed within certain operating parameters. Since the gas flow has to be constantly maintained, the only parameter that can be changed is the inlet gas temperature. Increase your Crystallizer and drying capacity by installing a finisher designed for lactose by one of the great dairy evaporator companies.

Vapor in at 1, pounds per hour, Condensate out at F 2. This is achieved by a cascade control from a feed vat level sensor to the inlet temperature controller set-point.

From the agglomeration zone, the powder flows into the drying area where handbopk moisture is removed by fluidization using heated air. Install, startup and training supervision available upon request. Since the heat exchanger is positioned within the insulated shell in this type of dryer, the air rejection rate is extremely low and thermal efficiencies are high.

Samsco Series Wastewater Evaporator.