I. Core Advantages: Why Choose the Belt Dryer?
1. Gentle Drying for Activity Retention
Plant proteins (e.g., soy protein, pea protein) are temperature‑sensitive. Adopting multi‑layer mesh belt and zoned temperature‑control technology, the belt dryer precisely controls temperature at 40‑80°C to prevent protein denaturation and preserve solubility and nutritional value.

2. Continuous and High‑efficiency Production
Fully automatic operation covers wet‑material feeding, drying, cooling and discharging. The daily processing capacity of a single line reaches 5‑20 tons, satisfying large‑scale production of plant‑based meat, protein powder and other products.

3. Low‑energy‑consumption Design
Hot‑air circulation utilization exceeds 70%. It saves 30%‑50% energy compared with traditional drying ovens and greatly cuts steam and power consumption.

 II. Technical Highlights: Solving Difficulties in Plant Protein Drying
1. Anti‑caking Pre‑treatment
Wet protein slurry is granulated or extruded into 3‑5 mm particles and evenly spread onto the mesh belt to avoid post‑drying agglomeration and improve solubility.

2. Four‑stage Drying Process
Preheating stage (40‑50°C): Slow temperature rise to prevent surface hardening.
Constant‑rate drying stage (60‑70°C): Rapid removal of free moisture.
Falling‑rate drying stage (50‑60°C): Removal of bound water while protecting protein structure.
Cooling stage: Cool materials below 30°C to prevent moisture re‑absorption and agglomeration.

3. Intelligent Humidity Control
Online moisture detectors monitor moisture content in real time and automatically adjust hot‑air temperature and belt speed. The moisture fluctuation of finished products is ≤0.3%.

4. Exhaust‑gas Purification System
Exhaust gas is treated by dust removal and dehumidification. Dust emission is less than 10 mg/m³ to meet cleanliness requirements of food factories.

 III. Application Scenarios: Who Needs This Production Line?
1. Plant Protein Extraction Enterprises
Dry concentrated plant proteins of soybean, pea, wheat and others for plant‑based meat, protein beverages and nutritional supplements.

2. Food Processing Plants
Process high‑moisture protein products (e.g., semi‑finished vegetarian meat, fermented protein) as an alternative to traditional freeze‑drying to reduce costs.

3. Emerging Eco‑friendly Material Sector
Dry protein‑derived materials such as edible packaging films and plant‑based adhesives.

 IV. Real‑world Case: Customer Value Verification
Upgrading Project of a Pea Protein Manufacturer
**Original process pain points**: Spray drying brought high energy consumption (1.5 tons steam per ton of material), product solubility of only 85%, and limited production capacity.

**Solution**:
Custom 4‑layer belt dryer integrated with granulation, cooling and automatic packaging modules; the whole drying temperature kept ≤70°C.

**Operation results**:
‑ Production capacity tripled, daily output increased from 3 tons to 10 tons;
‑ Protein solubility rose to 92%, bringing a 15% premium for customer orders;
‑ Energy consumption per ton reduced by 40%, with annual cost savings of over RMB 1.5 million.