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DDM

DDM

Product catalog summary

Introduction
Labotek's DDM series is a mobile desiccant dryer designed for continuous drying of free-flowing plastic raw materials in granulate form. It features a complete desiccant drying and integrated dry air conveying system, with a standard temperature range of 60 to 140ºC and a high-temperature model available up to 180ºC. The system ensures precise temperature control and achieves a final moisture content of less than 0.02%.

Energy Saving System
The Labotek Energy Saving System (LESS) is designed to save energy by adjusting the drying air temperature based on the return air temperature. This system prevents over-drying and automatically controls temperature adjustments.

Touch Screen Control
The DDM is operated via a 6” color touch screen, which is menu-driven and uses basic symbols for easy operator interaction. It includes shortcuts for essential functions like drying temperature settings and drying time.

Drying Process
The drying process involves a desiccant air blower circulating air through desiccant beds, lowering the dew-point temperature to approximately -35°C. The dry air is heated and distributed in the drying hopper, where it removes moisture from the raw material.

Regeneration
The DDM dryer features two desiccant beds that alternate between drying and regeneration cycles. Regeneration involves heating the desiccant bed to evaporate absorbed moisture, which is then expelled as water vapor.

Conveying System
Raw material is automatically fed into the machine hopper, with part of the blower air bypassed to an injector that conveys the dried material. The system is adjustable to accommodate different material sizes and shapes.

Technical Specifications
The DDM series includes models DDM 60, DDM 120, and DDM 180, each with specific power requirements, blower capacities, and drying hopper sizes. The system operates on a 3-phase power supply and does not require compressed air.

Options and Customization
The DDM can be customized with various options to optimize material processing, including double conveying systems, cyclone dust separators, and warning lamps.

Contact Information
Labotek A/S, Strøbjergvej 29, DK-3600 Frederikssund, Phone: +45 4821 8411, Email: [email protected], Website: www.labotek.com

Catalog excerpts

Desiccant Dryer Mobile Drying of free-flowing granular plastic materials

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Desiccant Dryer Mobile - DDM Introduction Labotek’s series of mobile desiccant dryers, DDM, is designed for the continuous drying of free-flowing plastic raw materials in granulate form. The DDM is available as a complete desiccant drying and integrated dry air conveying system to processing machine, based on proven, reliable & energy saving design. The standard temperature range is 60 to 140ºC with a preset deviation of +/- 2ºC. A HT (High Temperature) model is also available with a temperature range of 60 to 180ºC. Owing to the extremely accurate temperature control and a dew point of -35ºC,...

Open the catalog to page 2

Drying The desiccant air blower (7) circulates the drying air in a closed system. The air is dried in one of the two desiccant beds (8) or (9), and the dew-point temperature is lowered to approx. -35°C. The dry air heating element (10) is used to heat the drying air to the required temperature before, via the air separator (6), it is distributed in the drying hopper DH (1). After the drying air has heated the raw material and transformed the moisture to water vapour, it is led back through the dust filter (11) to the blower (7). The humid air is cooled in the structural frame (12) of the machine...

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Technical Data DDM Type Supply Voltage Blower, drying Blower motor, drying - 3 Phase 50/60 Hz, kW Air volume m³/h - 50/60Hz Blower, regeneration Blower motor, regeneration - 3 Phase 50/60 Hz, kW Dew point, temp. °C Heating element, Drying - kW Heating element, Drying HT version - kW Heating element, Regeneration - kW Cooling water requirement - HT version Max. pressure: 8 bar-flow 250 l/h-cooling water temp. In/out 15/40°C Drying Hopper, sizes (litre) Desiccant beds Return air hose, inner Ø [mm] / length [m] Conveying hose, inner Ø [mm] / length [m] Telescopic suction probe, Ø [mm] Net weight...

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Capacity table for desiccant dryers Recommended dry time [h] Drying capacity kg/h at bulk density 0.6 Recommended drying temp. °C Polybutylene therephtalate Polyethylene, black Polyestere carbonate Polyethylene terephthalate Polyethylene terephthalate glycol Thermoplastic polyestere Methylmethacrylate polymer Polyphenylene oxide Polyphenylene sulphide Polyethere sulfone Polyvinyl chloride Styrene acrylonitrile Styrene butadiene (high impact) Polyester elastomer Thermoplastic rubber The above capacity table states recommended values only, based on the drying of the specific materials down to a...

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