Powder Processing Technologies
  • English
    • English English
    • Deutsch Deutsch
    • Русский Русский
    • Google Translator

Flash dryer Drymeister® (DMR-H)

The flash dryer from Hosokawa is the first drying system of its kind to be patented anywhere in the world. It has been developed to combine drying, de-agglomeration/milling and classifying in one piece of equipment. The latest edition of this flexible drying technology is the Drymeister® (DMR-H): a flash dryer that can dry temperature-sensitive products, safely, even under increased temperatures, in a matter of seconds!

The Drymeister® can handle moisture content fluctuations from a few % up to more than 80% in suspensions, slurries, pastes, dough, filter cakes and wet powders. It requires 75% less space and uses about 30-40% less energy per kilogram of evaporated water.

Product Support
Product Support

If you need more information about the Drymeister® (DMR-H) flash dryer, call us at +31 314 373 333 or fill out our contact form.

       

Working principle flash dryer

Working principle flash dryerThe wet material is fed through customised feeding systems into the grinding and drying section of the dryer's main body. The grinding rotor disperses the wet material into very fine particles and the fine particles are fluidised in the grinding chamber by temperature-controlled, hot gas coming in from the air heater.

The hot air (or inert gas) can be heated up to 650 °C and as the wet product is dispersed, it is reduced in size in the bottom section of the dryer. The system is kept under a negative pressure by the exhaust fan and the surface area of the product is increased enormously so that water (or other solvents) is evaporated instantaneously.

The dry and fine particles are conveyed with the gas stream to the top section of the dryer where a separator classifies the particles by size. Then the particles pass the classifier at the set cut point and are conveyed with the exhaust air to a powder air separating system like the cyclone, cyclone filter or cyclone scrubbers.

The Micron Dryer flash dryer retains a fluidised bed of product in the drying chamber to ensure a low level of adhesion of wet material on the inside wall of the drying chamber. Moreover, process parameters like classifier speed and outlet temperature can be adapted to control moisture content and particle size of the end product.

» Contact us for more information about continuous drying technologies.

Key features

  • Ultra fine regular end product
    Due to its specially designed dispersion rotor, our flash dryers are able to produce ultra-fine powders in one step from suspensions, slurries, pastes and dough, filter cakes or wet powders.
  • High evaporation capacity
    Due to the combination of high ΔT with a good dispersion of the wet product in the air, our flash dryers can evaporate large quantities of liquids.
  • Compact design
    Compared to other direct drying technologies, the flash dryer requires up to 50% less space.
  • Multi-purpose
    Filter cake or slurry, in the same machine. Therefore with the Drymeister unlimited mechanical dewatering is possible previous to the final drying stage.
  • Easy access
    Either for cleaning, inspection or maintenance inside the dryer, our flash dryers offers the best accessibility from the market, regardless what size.
  • Various systems available
    Open, closed- and recycle system concepts.

» Contact us for more information about continuous drying technologies.

Models

The Micron Dryer flash dryer is available in 3 different models. Different mechanisms are used to achieve different particle sizes and to handle various materials. Geometry, dispersion principle and energy input also differ depending on the model.

  • DMR-H type rotor
    Strong impact and air turbulence is generated by a high speed dispersion rotor called the multi blade: typical tip speed 110 m/s.
  • MDH type rotor
    A horizontally-driven grinding rotor with swing hammers to take care of the milling/dispersion.
  • MDV type rotor
    A vertically-driven grinding rotor disperses wet agglomerates and solids.

Specifications

Our expert design and engineering team can help you specify the right dryer to meet your specific requirements. We have models for dispersion and soft grinding (model MDV), intensive grinding (model MDH) and strong dispersion (model DMR-H). The Drymeister® (DMR-H) is available in 7 models. Underneath you will find their basic specifications. Details on MDH models can be provided on request.

  Model [-] DMR-1H DMR-2H DMR-3H DMR-4H DMR-5H DMR-6H DMR-7H
  Height [mm] 1940 3000 3300 3600 4500 5000 5500
  Length [mm] 1400 1700 2300 2400 3600 4500 5000
  Width [mm] 700 1200 1500 1600 1600 2600 3200
  Max. power
grinding motor
[kW] 11 22 45 90 200 280 355
  Min./max. power
separator motor
[kW] 0.75/4 1.5/11 2.2/15 5.5/30 11/45 22/55 30/75
  Max. volume outlet air
80°C
[m³/min] 25 50 100 200 400 600 800
  Evaporated water
- at ΔT=150°C
[kg/h] 79 158 316 632 1264 1896 2528
  Evaporated water
- at ΔT=200°C
[kg/h] 103 206 412 824 1648 2472 3296
  Evaporated water
- at ΔT=300°C
[kg/h] 148 296 592 1184 2368 3552 4736
  Evaporated water
- at ΔT=400°C
[kg/h] 189 378 756 1512 3024 4536 6048
  Evaporated water
- at ΔT=500°C
[kg/h] 226 452 904 1808 3616 5424 7232


Depending on the application and the properties of the product the selection of a suitable model Micron Dryer is made:

  • Dispersion and soft grinding: model MDV
  • Intensive grinding: model MDH
  • Strong dispersion: model DMR-H

» Contact us for more information about continuous drying technologies.

Ancillaries

Our expert design and engineering team would happily help you specify the right ancillary equipment to compliment Hosokawa’s flash dryers. These ancillaries may include:

  • Special feeding units
  • Air heaters
  • Dust collectors
  • Ventilators
  • Plant controls including PLC and PC

» Contact us for more information about continuous drying technologies.

Complete systems

1. Open flash drying system
complete flash drying system

2. Chemical flash drying installation for materials containing solvents
chemical flash drying system

 

 

 

 

 

 

 

 

 

 

 

 

 


3. Human food grade flash drying installation for organic thixotropic materials
human food grade flash drying system

» Contact us for more information about continuous drying technologies.

Pesticides

process-equipment-for-pesticides
 
  Read more          

Inorganic Pigments

inorganic-pigments
 
  Read more          

Fish feed

fish-feed
 
  Read more          

Meat proteins

meat-proteins
 
  Read more