Vacuum drying Using the vacuum method to dry lumber improves its quality. The water is removed even from the core of the wood and the low temperatures dry the lumber gently.
Germany
The laboratory vacuum shovel dryer DRUVATHERM® is a system provides reliable scale-up to production scales in the context of product and process development and can likewise be used for small batch production too. The Lödige laboratory vacuum shovel dryer DRUVATHERM® is a horizontal, batch vacuum dryer with a frequency-controlled mixing tool. This mixer consisting of mixing elements adapted to the process and arranged on a shaft according to a specific system - is installed in a cylindrical mixing drum equipped with a temperature control jacket. Rotation of the mixing unit generates a three-dimensional product movement, in which all of the product is constantly in motion. The contact frequency of particles with the heat exchange surface leads to shorter drying times. The chopper rotating at high speeds fitted to the side of the mixing drum is used to disperse the product . This leads to a significant increase in drying capacity and prevents moisture and temperature gradients.
Request for a quoteGermany
Lödige shovel dryers are batch vacuum dryers. The mixing elements are frequency-controlled for ideal adaptation to the process. Special rotating mixing elements, installed in a cylindrical drum equipped with a temperature control jacket, create a three-dimensional product movement . The resulting contact frequency of the particles with the heat exchange surface leads to incredibly short drying times. The intelligent product movement ensures intense contact of individual product particles with the heated container wall while also providing very gentle product treatment. The chopper rotating at high speeds is used to disperse the product during transition between phases. Product surfaces are opened up during this process. This leads to a significant increase in drying capacity and prevents moisture and temperature gradients. Fine particles pulled along by solvent vapours are separated in the filter and returned to the product bed through pneumatic filter cleaning.
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Main features • Management of the process time and temperature through the heat exchanger • Short mixing time • Extremely high mixing quality • Batches with repeatable results • Mixing ratio 1/100.000 • Coefficient of variation (CV): ≤ 3 % • Low maintenance Techanical features • Batch size: from 65 to 28.000 liters (net) • Cylindrical mixing chamber • MIxing tools: ploughshare / ploughshare with toothed design / Mix Paddle / Mix Paddle with toothed design • Material of costruction: carbon steel / Hardox 450 / AISI 304 / AISI 316 / AISI 316Ti • Inspection door complete with safety electric lock • Discharge door with round profile, building the bottom side of the mixing chamber • Rotor shaft with turned and coaxial ends • Rotor shaft sealing system with packing seals and wear resistant ferrules to protect the rotor shaft, prepared for flushing with air / nitrogen • Heat exchanger on mixing chamber for heating / cooling processes
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"It is highly crucial to have clean and dry air in the system to have profitable and efficient manufacturing worldwide. Mikropor MMD-VP Series Modular Vacuum Purge Heatless Desiccant Air Dryers remove water vapor from compressed air, stop corrosion, and inhibit the growth of micro-organisms in critical applications. Mikropor MMD-VP Series Modular Vacuum Purge Heatless Desiccant Air Dryers supply high-quality dry air which has -40 °C dew point or optionally -70 °C dew point to the system with affordable prices and reliable way. In that way, the production machine has a longer life, minimum maintenance costs, and processed product is produced in a healthy and safe way. The new vacuum purge technology decreased air loss during the regeneration process and make the production more cost-efficient way."
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