Convection Dryer
Convection Dryers deliver fast, uniform drying by direct contact between hot air and material — spray, flash, fluidized-bed, belt and tray configurations for continuous production across industries.
LPG-Centrifugal Spray Dryer
Categories: Convection Dryer, Spray Dryer
Advanced Liquid-to-Powder Process:
A high-speed centrifugal atomizer at the tower's peak transforms materials into super fine liquid drops that dry quickly upon contact with hot air — perfect for precise particle size, moisture, density and shape standards.
- Input:
- Solutions, Emulsions, Suspensions
- Output:
- Powder with 3%-5% moisture content
- Temperature:
- Inlet air temperature range of 150°C to 500°C
YPG-Pressure Spray Dryer
Categories: Convection Dryer, Spray Dryer
High-Pressure Nozzle Atomization:
The Pressure Spray Dryer atomizes feed liquid through high-pressure nozzles, producing coarser and denser granules with excellent flowability — widely used for foods, chemicals and dairy powders.
- Input:
- Solutions, Emulsions, Suspensions
- Output:
- Coarse powder or granules with 3%-5% moisture content
- Temperature:
- Inlet air temperature range of 150°C to 350°C
CT-C Hot Air Circulation Tray Dryer
Categories: Convection Dryer
Hot Air Circulation Batch Drying:
The Hot Air Circulation Tray Dryer warms materials evenly on trays with forced hot-air circulation. Simple, reliable batch drying for granules, powders, herbs and food ingredients.
- Input:
- Granules, Powders, Herbs, Sliced Materials
- Output:
- Dried solids with uniform moisture content
- Temperature:
- Hot air temperature ≤140°C
XSG-Spin Flash Dryer
Categories: Convection Dryer, Flash Dryer
One-Step Continuous Flash Drying:
The Spin Flash Dryer dries pastes and filter cakes in a single continuous step. Hot air and mechanical agitation break up material while drying — no pre-crushing needed.
- Input:
- Pastes, Filter Cakes, Thick Slurries
- Output:
- Powder with 3%-8% moisture content
- Temperature:
- Inlet air temperature range of 150°C to 350°C
DW-Belt Dryer
Categories: Convection Dryer
Continuous Convection Dryer with Mesh Belt:
The Belt Dryer can be configured with single or multiple mesh-belt layers, spreading material evenly for directional hot-air drying. Belt speed adjusts to each material's temperature and moisture content, so it runs at comparatively low temperatures while continuously processing large batches.
- Input:
- Permeable solids in sheets, strips, granules or blocks
- Output:
- Sheet, strip, granule or block solids with 3%–8% moisture content
- Temperature:
- Inlet air temperature < 200°C
- Additional Feature:
- Cooling
ZLG-Horizontal Vibrating Fluidized Bed Dryer
Categories: Convection Dryer, Fluidized Bed Dryer, Vibrating Dryer
Continuous Drying Solution for Granular Materials:
Operating on the principle of fluidization combined with vibration, the Vibrating Fluid Bed Dryer processes granules by circulating them on heated air that dries them evenly. This approach minimizes surface damage, prevents pollution thanks to its enclosed design, and gives granules time to settle — facilitating stable, continuous production.
- Input:
- Granules with moisture content < 20%
- Output:
- Granules with 1%–5% moisture content
- Temperature:
- Inlet air temperature < 200°C
- Additional Feature:
- Cooling
HZG-Rotary Kiln
Categories: Convection Dryer
Perfect for Large-Scale, Continuous Drying:
Wet material enters at one end of the Rotary Kiln, where internal flights agitate it and blend it thoroughly with hot air. This elongated drum dryer, spanning many metres, can process hundreds of tons per hour, and its drum speed adjusts from 1 to 10 RPM to suit different requirements.
- Input:
- Granular materials
- Output:
- Granules with 3%–5% moisture content
- Temperature:
- Inlet air temperature range of 40°C to 350°C
- Additional Feature:
- Mixing
GXP-Closed Circulation Spray Dryer
Categories: Convection Dryer, Spray Dryer
Optimal Drying for Sensitive Materials:
This explosion-proof spray dryer operates in a sealed environment, using inert gas as the drying medium to fully recover solvents from raw materials. The recyclable drying medium provides superior protection for sensitive materials.
- Input:
- Solutions, Emulsions, Suspensions
- Output:
- Powder with 3%–8% moisture content
- Temperature:
- Inlet air temperature range of 100°C to 300°C
- Suitability:
- Anaerobic, explosion-proof and low-temperature conditions
ZLPG-Extract Spray Dryer
Categories: Convection Dryer, Spray Dryer
Specialized Spray Dryer for Extracts:
The Extract Spray Dryer features a cylinder equipped with a cooling system specifically designed for drying extracts while keeping wall temperatures below 80°C. It includes an airbrush that cleans the walls during operation to prevent adhesion and protect the powder from burning.
- Input:
- Extracts (Liquid)
- Output:
- Extracts (Powder) with 3%–8% moisture content
- Temperature:
- Inlet air temperature range of 140°C to 180°C
- Additional Features:
- Freeze dehumidification, Air brush for tower cleaning
Pneumatic Flash Dryer
Categories: Convection Dryer, Flash Dryer
Integrated Handling for Heat-Sensitive, Loose Solid Materials:
Designed for temperature-sensitive and slightly viscous materials, this equipment offers a wide range of uses for loose solid materials. Its modular design allows drying and grinding stages to be added to meet varying customer requirements.
- Input:
- Non-viscous, loose solid materials
- Output:
- Powder, granules, with 3%–6% moisture content
- Temperature:
- Inlet temperature < 200°C
- Additional Feature:
- Grinding
FG-Vertical Fluidized Bed Dryer
Categories: Convection Dryer, Fluidized Bed Dryer
Solution for Batch Drying of Granules and Powder:
The Vertical Fluid Bed Dryer fluidizes materials with an upward air stream that promotes contact for quick drying or cooling. Designed specifically for batch production, it allows taller bed heights than horizontal fluidized bed dryers and is commonly paired with wet granulation machines.
- Input:
- Powders and Granules, moisture < 20%
- Output:
- Powders and Granules, moisture 3%–5%
- Temperature:
- Inlet air temperature < 100°C
- Additional Feature:
- Convertible to a spray fluidized bed granulator
XF-Horizontal Fluidized Bed Dryer
Categories: Convection Dryer, Fluidized Bed Dryer
Versatile Continuous Drying for Granules and Powder:
The Horizontal Fluidized Bed Dryer aerates damp materials with an upward air stream to dry or cool them. Built for continuous manufacturing, it offers residence times from a few seconds to minutes, ensuring effective processing.
- Input:
- Powders and Granules, moisture < 20%
- Output:
- Powders and Granules, moisture 3%–5%
- Temperature:
- Inlet air temperature < 100°C
- Additional Feature:
- Cooling
GFG-Vertical Blending Fluidized Bed Dryer
Categories: Convection Dryer, Fluidized Bed Dryer
Fluidized Bed Drying with Built-In Mixing:
The Vertical Blending Fluidized Bed Dryer is equipped with a mixing mechanism that helps form a fluidized bed inside the vessel when handling heavy loads. Ideal for mass production, it can process thick materials and is typically paired with wet granulation setups.
- Input:
- Powder and Granules, moisture < 20%
- Output:
- Powder and Granules, moisture 3%–5%
- Temperature:
- Inlet air temperature < 100°C
- Additional Feature:
- Stirring, Cooling
LZG-Spiral Vibrating Dryer
Categories: Convection Dryer, Vibrating Dryer
Method for Drying Pellets and Granules:
The Spiral Vibrating Dryer dries materials by using centrifugal vibration and gravity to move them in a bouncing path from top to bottom along a spiral bed. Fresh hot air enters from below, interacting thoroughly with the material for heat and mass transfer before leaving through the top — ensuring even drying.
- Input:
- Granular, short-rod and spherical solids with < 20% moisture
- Output:
- Granules, short rods and spheres with 3%–5% moisture
- Temperature:
- Inlet air temperature < 100°C
- Additional Feature:
- Cooling
Fourteen Convection Dryers for Continuous Production
SINOTHERMO's convection range covers centrifugal and pressure spray drying, hot-air tray and belt drying, spin-flash and pneumatic flash drying, horizontal and vertical fluidized-bed drying, rotary kiln processing, and vibrating-bed drying — all built on direct hot-air contact for continuous, high-throughput operation.
Selecting a Convection Dryer by Feed Type
Liquid feeds atomize through spray dryers (LPG, YPG, GXP, ZLPG) into fine dry powder. Wet cakes and pastes pass through flash dryers (XSG, Pneumatic) for seconds-scale moisture removal. Granular and powder solids fluidize in bed dryers (FG, XF, GFG, ZLG) for uniform continuous drying. Bulk solids move through belt (DW), tray (CT-C), rotary kiln (HZG) or vibrating (LZG) dryers depending on throughput and residence time needed.
