Microwave Chemical Powder Dryer
| Product Name | batch type microwave vacuum drying oven |
| Model | BDMD-M-V-30 |
| Operating Voltage | 380V±10% |
| Supply Frequency | 50Hz |
| Rated Current | 80A |
| Max Input Power | 40KW |
| Supply Power | ≥55KVA |
| Microwave Frequency | 2450±50MHz |
| Max Output Power of Microwave | 30KW |
| Dimensions (L*W*H) (mm) | 2800×2000×2300 |
| Machine Size (L*W*H) (mm) | 4500×3000×2600 |
| Inner Dimension (mm) | Φ1700×1100 |
| Material | stainless steel |
| Weight | ≈3 tons |
As compared with conventional drying methods, which are heating from the outside to the inside by heat conduction, microwave show so-called volume heating with the following advantages:
- a temperature gradient directed towards the surface, i.e. temperatures inside are higher than outside, giving rise to a higher partial pressure that drives the evaporating liquid to the surface
- consequently, the superficial layer does not dry up completely and the surfaces remain permeable
- the liquid evaporating inside the product is emitted through the porous structure of the solid material’s macro-capillary system, resulting in a high drying velocity
- the heating of water and most organic solvents occurs selectively - due to the greater dielectric losses of water as compared to the product to be dried
- swift and thorough drying of moist products with low thermal conductivity
- static drying of thick layers without frictional losses
- high total efficiency of energy application
- high-speed control of the energy transport
- short processing times, i.e. suitable for automated manufacturing
| Drying method | Microwave | Boiling | Hot air | Vibrating |
|---|---|---|---|---|
| Temperature | low |
high |
high |
high |
| Time | short |
long |
long |
short(several times) |
| Quality | very good |
good |
normal |
normal |
| Loss | none |
little |
much |
much |
| Solubility | good |
good |
normal |
bad |
| Appearance | very good |
good |
normal |
noraml |
| Consumption | low |
high |
high |
high |
| Continuous | available |
difficult |
N/A |
difficult |
| Sterilization | good |
bad |
bad |
bad |
| Drying method | MW+Vacuum | Freezing | Vacuum | Spray |
|---|---|---|---|---|
| Temperature | low |
very low |
low |
high |
| Time | short |
long |
very long |
short |
| Quality | good |
good |
normal |
bad |
| Loss | none |
little |
none |
much |
| Solubility | very good |
very good |
normal |
normal |
| Appearance | good |
good |
bad |
normal |
| Consumption | low |
very high |
high |
very high |
| Continuous | available |
difficult |
N/A |
available |
| Cost | low |
very high |
low |
low |








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