Vacuum dryer BVD series

spraycontinuousinstant

Industrial Continuously Low Temperature Vacuum Belt Dryer is a continuous vacuum drying system designed for gentle low-temperature drying of pasty and liquid materials to preserve color, aroma and active properties while producing high-quality powder or granules.

This system distributes liquid raw materials continuously on a heated conveyor belt inside a vacuum, dries the material at low temperature, then cools, embrittles and pulverizes or granulates the dried product. The process is mild (low-temperature vacuum environment), yields particles with good crystallization and internal micropores, gives good flowability and instant solubility, and supports online adjustment of process parameters (belt speed, layer thickness, drying temperature, vacuum degree, feed rate) to meet different product requirements.

Advantages

• Low product temperatures (suitable for heat-sensitive materials)
• Minimal loss of flavors
• Very small product loss
• No product oxidation
• No mechanical stress to the product
• Controllable Maillard reaction
• Controllable solubility (instant characteristics) of the dried products
• Possibility to recover solvents
• Automatic cleaning

Equipment advantages

• Continuous feeding and continuous discharging under vacuum condition
• Drying, pulverizing and granulating processes can be achieved under vacuum
• Process automation, continuous and pipeline operation
• Organic solvents can be recycled with no emissions and no pollution
• System operating costs are around one third of vacuum oven and spray drying
• Shredded mesh/granule size adjustable (20-120 mesh)
• Online adjustment of drying process parameters according to material characteristics
• Low temperature and fast drying process improves product quality
• Continuous discharge in 30-60 minutes with product recovery rate over 99%
• Excellent instant solubility of the dried material
• Complete granulation under vacuum to avoid secondary moisture absorption, waste and pollution
• Can handle heat sensitive, high-sugar and high-viscosity materials
• System and process can meet GMP requirements
• PLC automatic control and online CIP (clean-in-place) automatic cleaning
• Low labor requirements (typically up to 2 operators)

Caractéristiques / spécifications techniques

• General heating temperature range (varies by model): typically in the 30-145 °C range depending on model
• Typical vacuum range (many models): 1000-5000 Pa
• Feed moisture content range: 20-80 % (application-dependent)
• Dry powder moisture content (after drying): 0.5-5 %
• Shredded mesh / granule size (adjustable): 20-120 mesh
• Continuous discharge time: typically 30-60 minutes
• Product recovery rate: >99%
• Control: PLC automatic control, online CIP cleaning, solvent recovery available
• Labor: low (up to 2 operators typical)
• System operating cost: ~1/3 of vacuum oven or spray drying (per manufacturer)

Models and main parameters (per supplied table)

• BVD207 — Layers: 2; Evaporation area: 7 m²; Water evaporation: 5.6-7.7 kg/h; Heating temp: 30-145 °C; Vacuum: 1000-5000 Pa; Diameter: 1200 mm; Length: 7500 mm; Height: 2000 mm; Feed moisture: 20-80 %; Dry powder moisture: 0.5-5 %; Number of discharges: 20-120
• BVD210 — Layers: 2; Evaporation area: 10 m²; Water evaporation: 8-11 kg/h; Heating temp: 30-145 °C; Diameter: 1200 mm; Length: 9000 mm; Height: 2000 mm
• BVD320 — Layers: 3; Evaporation area: 20 m²; Water evaporation: 16-22 kg/h; Heating temp: 30-145 °C; Vacuum: 1000-5000 Pa; Diameter: 1600 mm; Length: 9000 mm; Height: 2500 mm; Feed moisture: 20-80 %; Dry powder moisture: 0.5-5 %; Number of discharges: 20-120
• BVD330 — Layers: 3; Evaporation area: 30 m²; Water evaporation: 24-33 kg/h; Heating temp: 30-145 °C; Diameter: 1600 mm; Length: 12000 mm; Height: 2500 mm
• BVD430 — Layers: 4; Evaporation area: 30 m²; Water evaporation: 24-33 kg/h; Heating temp: 30-145 °C; Vacuum: 1000-5000 Pa; Diameter: 1900 mm; Length: 9000 mm; Height: 3400 mm; Feed moisture: 20-80 %; Dry powder moisture: 0.5-5 %; Number of discharges: 20-120
• BVD435 — Layers: 4; Evaporation area: 35 m²; Water evaporation: 28-38 kg/h; Heating temp: 30-145 °C; Diameter: 1900 mm; Length: 10500 mm; Height: 3400 mm
• BVD440 — Layers: 4; Evaporation area: 40 m²; Water evaporation: 32-44 kg/h; Heating temp: 30-145 °C; Diameter: 1900 mm; Length: 12000 mm; Height: 3400 mm
• BVD450 — Layers: 4; Evaporation area: 50 m²; Water evaporation: 40-55 kg/h; Heating temp: 30-145 °C; Diameter: 1900 mm; Length: 13500 mm; Height: 3400 mm
• BVD455 — Layers: 4; Evaporation area: 55 m²; Water evaporation: 44-60 kg/h; Heating temp: 30-145 °C; Diameter: 1900 mm; Length: 15000 mm; Height: 3400 mm
• BVD460 — Layers: 4; Evaporation area: 60 m²; Water evaporation: 48-66 kg/h; Heating temp: 30-145 °C; Diameter: 1900 mm; Length: 16500 mm; Height: 3400 mm
• BVD550 — Layers: 5; Evaporation area: 50 m²; Water evaporation: 40-55 kg/h; Heating temp: 30-145 °C; Vacuum: 1000-5000 Pa; Diameter: 2200 mm; Length: 10500 mm; Height: 3700 mm; Feed moisture: 20-80 %; Dry powder moisture: 0.5-5 %; Number of discharges: 20-120
• BVD560 — Layers: 5; Evaporation area: 60 m²; Water evaporation: 48-66 kg/h; Heating temp: 30-145 °C; Diameter: 2200 mm; Length: 12000 mm; Height: 3700 mm
• BVD565 — Layers: 5; Evaporation area: 65 m²; Water evaporation: 52-71 kg/h; Heating temp: 30-145 °C; Diameter: 2200 mm; Length: 13500 mm; Height: 3700 mm
• BVD575 — Layers: 5; Evaporation area: 75 m²; Water evaporation: 60-82 kg/h; Heating temp: 30-145 °C; Diameter: 2200 mm; Length: 15000 mm; Height: 3700 mm
• BVD585 — Layers: 5; Evaporation area: 85 m²; Water evaporation: 68-93 kg/h; Heating temp: 30-145 °C; Diameter: 2200 mm; Length: 16500 mm; Height: 3700 mm
• BVD650 — Layers: 6; Evaporation area: 50 m²; Water evaporation: 40-55 kg/h; Heating temp: 30-145 °C; Vacuum: 1000-5000 Pa; Diameter: 2200 mm; Length: 9000 mm; Height: 3700 mm; Feed moisture: 20-80 %; Dry powder moisture: 0.5-5 %; Number of discharges: 20-120
• BVD660 — Layers: 6; Evaporation area: 60 m²; Water evaporation: 48-66 kg/h; Heating temp: 30-145 °C; Diameter: 2200 mm; Length: 10500 mm; Height: 3700 mm
• BVD670 — Layers: 6; Evaporation area: 70 m²; Water evaporation: 56-77 kg/h; Heating temp: 30-145 °C; Diameter: 2200 mm; Length: 12000 mm; Height: 3700 mm
• BVD685 — Layers: 6; Evaporation area: 85 m²; Water evaporation: 68-93 kg/h; Heating temp: 30-145 °C; Diameter: 2200 mm; Length: 13500 mm; Height: 3700 mm
• BVD695 — Layers: 6; Evaporation area: 95 m²; Water evaporation: 76-100 kg/h; Heating temp: 30-145 °C; Diameter: 2200 mm; Length: 15000 mm; Height: 3700 mm
• BVD6105 — Layers: 6; Evaporation area: 105 m²; Water evaporation: 84-115 kg/h; Heating temp: 30-145 °C; Diameter: 2200 mm; Length: 16500 mm; Height: 3700 mm
• BVD6115 — Layers: 6; Evaporation area: 115 m²; Water evaporation: 92-126 kg/h; Heating temp: 30-145 °C; Diameter: 2200 mm; Length: 18000 mm; Height: 3700 mm
• BVD7110 — Layers: 7; Evaporation area: 110 m²; Water evaporation: 88-121 kg/h; Heating temp: 30-145 °C; Vacuum: 1000-5000 Pa; Diameter: 2500 mm; Length: 15000 mm; Height: 4000 mm; Feed moisture: 20-80 %; Dry powder moisture: 0.5-5 %; Number of discharges: 20-120
• BVD7125 — Layers: 7; Evaporation area: 125 m²; Water evaporation: 100-137 kg/h; Heating temp: 30-145 °C; Diameter: 2500 mm; Length: 16500 mm; Height: 4000 mm
• BVD7140 — Layers: 7; Evaporation area: 140 m²; Water evaporation: 112-154 kg/h; Heating temp: 30-145 °C; Diameter: 2500 mm; Length: 18000 mm; Height: 4000 mm
• BVD8135 — Layers: 8; Evaporation area: 137 m²; Water evaporation: 109-150 kg/h; Heating temp: 30-145 °C; Vacuum: 1000-5000 Pa; Diameter: 2800 mm; Length: 15000 mm; Height: 4500 mm; Feed moisture: 20-80 %; Dry powder moisture: 0.5-5 %; Number of discharges: 20-120
• BVD8150 — Layers: 8; Evaporation area: 153 m²; Water evaporation: 122-168 kg/h; Heating temp: 30-145 °C; Diameter: 2800 mm; Length: 16500 mm; Height: 4500 mm
• BVD8170 — Layers: 8; Evaporation area: 170 m²; Water evaporation: 136-187 kg/h; Heating temp: 30-145 °C; Diameter: 2800 mm; Length: 18000 mm; Height: 4500 mm
• BVD9170 — Layers: 9; Evaporation area: 172 m²; Water evaporation: 137-190 kg/h; Heating temp: 30-145 °C; Vacuum: 1000-5000 Pa; Diameter: 3000 mm; Length: 16500 mm; Height: 4900 mm; Feed moisture: 20-80 %; Dry powder moisture: 0.5-5 %; Number of discharges: 20-120
• BVD9190 — Layers: 9; Evaporation area: 191 m²; Water evaporation: 152-210 kg/h; Heating temp: 30-145 °C; Diameter: 3000 mm; Length: 18000 mm; Height: 4900 mm
• BVD10190 — Layers: 10; Evaporation area: 191 m²; Water evaporation: 152-210 kg/h; Heating temp: 30-145 °C; Vacuum: 1000-5000 Pa; Diameter: 3000 mm; Length: 16500 mm; Height: 4900 mm; Feed moisture: 20-80 %; Dry powder moisture: 0.5-5 %; Number of discharges: 20-120
• BVD10210 — Layers: 10; Evaporation area: 211 m²; Water evaporation: 168-231 kg/h; Heating temp: 30-145 °C; Diameter: 3000 mm; Length: 18000 mm; Height: 4900 mm