Herbals
Herbals covers SINOTHERMO's tray and vacuum dryers, extract spray dryer and fluidized-bed granulator used to gently dry whole herbs, botanicals and herbal extracts. Low-temperature and vacuum processing preserve the volatile compounds that carry potency and aroma, converting liquid extracts into stable, standardized powder.

CTC-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

FZG-Static Vacuum Cabinet Dryer
Categories: Conduction and Vacuum Dryer, Vacuum Tray Dryer
Vacuum Dryer with Pulse Back-Blow Function:
The Square Static Vacuum Dryer comes with spacious hollow heating tubes, warming materials on trays. It is perfect for operating at low temperatures in a vacuum, suitable for handling explosive and heat-sensitive materials while maintaining their original characteristics and properties.
- Input:
- Liquids, Slurries, Pastes and Thick Materials
- Output:
- Lump Solids with 3%-5% moisture content
- Temperature:
- Heat source temperature <100°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

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

PGL-Fluidized Bed Spray Granulator
Categories: Granulator and Extruder, Fluid Bed Granulator
Combines Mixing, Granulating and Drying for High-Excipient Granulation:
Excipient-rich granulation finds an ideal match in this unit. Excipients in the hopper form a fluidized bed that acts as seeds or carriers, while the main material — typically a liquid extract making up a smaller proportion of the batch — is sprayed from above and merges at the bed's edge for granulation. This method is particularly suited to heat-sensitive materials.
- Input:
- Carrier materials in powder form, main material in liquid form
- Output:
- Solid medium-sized granules, 3%–5% moisture content
- Type:
- Spray Fluidized Bed, Wet Granulation
- Additional Features:
- Mixing, Drying, Cooling
Gentle Drying to Preserve Herbal Potency
The CT-C hot air circulation tray dryer and FZG static vacuum cabinet dryer dry whole herbs and botanicals gently, the belt dryer handles continuous bulk herb drying, the ZLPG extract spray dryer converts liquid herbal extracts to powder, and the PGL fluidized bed spray granulator builds herbal extract granules.
Why Herbal Processing Needs Careful Drying
Vacuum and low-temperature drying preserves the volatile compounds that give herbal products their potency and aroma. Extract spray drying converts concentrated liquid herbal extracts into stable, standardized powder. Tray and belt drying handle whole or cut botanical material ahead of extraction or milling. Fluidized-bed spray granulation builds free-flowing granules directly from herbal extract liquid.
