The heat energy for drying, is indirect, thermal fluid is circulated through the rotor, fliting and the outer jacket of the drying chamber, in a closed loop path. ... Electrical heating elements contained within the hollow core of the screws are operated to heat the screws evenly at a controlled rate. Thermocouples are installed at the ...

The BOLZ-SUMMIX conical screw dryer is a vacuum contact dryer. Due to its contained closed system and indirect heating of the product it is particularly suited for drying hazardous and toxic products to a very low …

This provides for high energy efficiencies and low off-gas volumes. Heat transfer mediums of up to 750°F can be used. Hot sweep gas can be employed to prevent condensation in the vapor space or downstream of the dryer. Indirect Drying to low moistures or residual solvents levels of 10 ppm or lower requires uniform heating and residence time.

The indirect heat exchanger utlizes a hollow screw for heating, cooling or drying bulk solids, filter cakes, pastes or sludges. Outotec has over 60 years experience in …

Rotary dryers are a highly efficient industrial drying option for bulk solids. They are often chosen for their robust processing capabilities and their ability to produce uniform results despite variance in feedstock. Rotary dryers work by tumbling material in a rotating drum in the presence of a drying air. They can also be indirectly heated ...

An indirect solar dryer with energy storage utilizes stored heat energy to maintain drying at times without sunlight. As a result, drying is maintained, protecting the goods from potential degradation brought on by microbial action [19].The use of heat energy retention substance to maintain heat during times of darkness is the primary benefit of …

Conversely, the filter/dryer's multipurpose design slightly reduces heat-transfer area with the replacement of the solid base with a filter plate. 6. Conical Screw Dryer. The conical screw dryer gets its name from the tapered shape of the vessel and top-driven screw-type agitator. Positioned close to the heated vessel wall via the …

Features. Particles are indirectly heated or cooled via the hollow flights, shaft, and trough. Heat transfer is achieved by using water, steam, or …

means of the rotating screw flights along a jacketed trough. Indirect heat exchange The Holo-Flite® processor is an indirect heat exchanger where heat is transferred by conduction from a heat transfer medium through a heat transfer surface to the material being processed. The heat transfer fluid is normally water, steam or thermal oil.

(Screw Conveyor Drier-SCD) with screw at an angle of 20°, 2000 x 3685 mm 7070 x size, isolated outside of indirect heat exchange. The fluid exchanges heat in the circuitry that runs through the inside of the shaft and the outer sleeve of the auger. The type of heat source is not binding; therefore, sources of renewable energy or

Indirect Thermal Desorption Systems SCREW PROCESSOR: HIGH-EFFICIENCY, LOW PROFILE. Standard dryer temperature configurations: Holo-Scru® dryer up to 700°F. Used for Drill Cuttings, water evaporation, light hydrocarbons contamination, etc; Electric-Scru dryer up to 1200°F. Used for tank bottom sludge, catalyst

The K-S Paddle Sludge Dryer is indirectly heated using steam or circulated thermal fluid (hot oil). High-energy efficiencies and low off-gas volumes are characteristics of a K-S Drying System. The K-S Paddle Sludge Dryer is an indirect heat transfer device that utilizes mechanical agitation to enhance contact with the product being dried.

Both reliable and customizable, HOLO-SCRU TM equipment is the world standard in indirect screw type heat exchange equipment. Technology that Works. Step 1 – Feed …

These dryers can be installed to load directly underneath a filter press or multiple disk screw press, or elsewhere in the plant. The sludge is dried through the heated liner of our units while being crushed and circulated through our screw blade system. The dryer liner uses an indirect heat source from steam, electric hot plates or gas fires.

Gas-fired burners heat the retort from the outside. This indirect heat prevents flame impingement on the chips that could cause surface oxidation. Dried chips exit the rotary retort and enter the rotary cooling …

The Heat Pipe Screw Dryer is based on two technologies: (a) screw conveyor dryers [10] and (b) heat pipes [14]. The figures show a common configuration for both technologies. ... The overall heat transfer …

How Indirect Heat Dryers Work; Indirect Heat Dryers Custom Solutions; ... Material is fed into the steam tube dryer generally through a screw conveyor. A product dam at the discharge end of the dryer creates a bed level which covers all of the rows of tubes with product, and maximizes the heat transfer area contact between the product and steam ...

The effects of various process variables and equipment components (geometry) on the performance of a screw conveyor dryer (SCD) were studied in terms of the material throughput and its uniformity, dryer load, specific consumption of mechanical energy, and heat transfer rate. The experimental results for drying of fine crystalline solids (50–100 …

Holo-Flite ® Thermal Processor. Holo-Flite® Thermal Processor Holo-Flite® is an indirect heat exchanger utilizing a hollow screw for heating, cooling or drying bulk solids, filter cakes, pastes or sludges.

Holo-Flite Dryer. Hugo Vincent. August 29th, 2018. Holo-Flite is an indirect heat exchanger utilizing a hollow screw for heating, cooling or drying bulk solids, filter cakes, pastes or sludges. Download files.

How It Works. Key Advantages. Typical Applications. Improve your efficiency today and minimize downtime. Contact Us. IEC Thermo's Multi-Phase Dryer's patented technology is designed to be gentle on …

Indirect-fired rotary dryers are better suited for niche applications. Indirect-fired dryers are ideal for processing dusty, fine materials, or materials that cannot be exposed to oxygen or combustion gases during processing. This is commonly seen with highly combustible materials, organics such as grains and pulps, and fine materials such as ...

The experimental results for drying of fine crystalline solids (50–100 µm particle size and 550 kg/m bulk density) in a 3-meter-long uninsulated jacketed screw conveyer dryer with a 0.072-m ...

Kemutec's °Celsius screw heat exchanger is an indirect heat exchanger based on a transfer screw design and is used for cooling, heating and drying powders, granules and pastes. Heat is transferred via the trough wall, screw shaft, screw flight or a combination. All systems are custom designed and manufactured to suit individual …

Paddle dryers are highly efficient, mechanically stirred, indirect heat transfer devices that add or remove heat from process materials. The required heat transfer is achieved by heating or cooling the shaft and the dryer body. In addition to the very good indirect heat transfer, the space requirements are low due to its compact design.

Steam Tube Dryer (STD) is an indirect heat dryer using steam tubes heated by steam as heat source disposed inside the rotating shell. ... The material to be dried is fed into a screw feeder through a chute and then into the STD. The material is then in contact with the steam tubes during passage through the STD and finally discharged from a ...

A hybrid technology of material conveyance and drying, termed as Heat Pipe Screw Dryer. •. The heat pipe was characterised to provide the best thermal performance. •. Highest moisture reduction of …

The continuous, indirect heat transfer setup within the paddle dryer's state-of-the-art interior produces a quality product with incredible efficiency – and a minimum of maintenance. Saturated steam or hot oil are perfect for drying or ... 8 Fluid bed dryer 9 Cooling screw conveyor 10 Fan Setting standards in terms of safety and simplicity with

in a screw conveyor and then deposited on the drying. screen—this avoids condensation and corrosion. ... the bed provides indirect heat for drying. It uses con-densing steam at 0.8 MPa. Steam ...

HoloFlite dryers are indirect screw heat exchangers for bulk materials. Heat present within hot circulated ... DOUBLE SCREW MODEL SIZES Double Screw Dryer HoloFlite Model Nominal Screw Diameter (mm) Nominal Trough Length (m) D0404-2 100 1.5 D0710-4 175 3.5 D0712-4 175 4.0

Dry from slurry to solid in one piece of equipment. LCI Thin Film Dryers concentrate slurries, suspensions, and solutions such as catalysts, salt solutions, and crude glycerin to a dry flowable powder or cake. This is done with indirect heat transfer and mechanical agitation of the thin product film under both vacuum and atmospheric conditions.