Jul 12, 2025
Drying solutions for high-moisture organic waste are crucial for the processing of agricultural products such as tea, coffee, turmeric, and ginger. With initial water content ranging from 70-85%, these byproducts require efficient drying methods to reduce moisture levels to below 10% for further utilization in fuel production, fertilizer manufacturing, or animal feed. Leveraging 25 years of engineering experience, Longxin Drying has successfully delivered a range of specialized drying machines to meet these needs.
Recommended Models and Advantages
1. LXZG Series Single-Shaft Rotary Steam Dryer (Longxin patented)
- Indirect conduction + low-speed stirring, operating at temperatures of 100-160°C to preserve effective components.
- Continuous feeding and discharging, with a single machine processing capacity of 0.5-6 t/h (wet material) for 24-hour continuous production.
- Steam consumption ≤ 1.1 kg steam/kg water evaporation, saving 25-30% more energy compared to traditional rotary dryers.
- Internal self-cleaning structure prevents clogging and material backflow, making it especially suitable for high-viscosity tea residue and ginger residue.
2. LZVF Series Vertical Vibrating Fluidized Bed Dryer
- Rapid dehydration of granular or sliced materials (such as dried ginger slices or crushed black tea) with batch capacities ranging from 200-800 kg.
- Modular design, compact footprint, easy to clean, suitable for small-scale or seasonal production.
3. LZPG Series Vacuum Rake Dryer
- Vacuum drying at low temperatures of 40-90°C in an oxygen-free environment to protect the aroma compounds of coffee and turmeric oil.
- Batch sizes ranging from 100-3000 L, meeting GMP/organic certification requirements.
Typical Process
High-moisture waste → Crushing/granulation → LXZG rotary drying → Cooling → Grinding → Packaging/granulation
(Optional: Condensation recovery of essential oils from exhaust gas, with condensate meeting emission standards)
Some Case Studies
- A coffee factory in Yunnan, China: Processing 2 t/h of coffee residue with 82% moisture content reduced to 10%, saving 1.05 kg of steam per kg of water and cutting annual steam costs by 1.2 million yuan.
- A tea enterprise in Huangshan, Anhui, China: Drying 1 t/h of black tea residue with a calorific value of 4200 kcal/kg for direct boiler use as a coal substitute.
- A biotechnology company in Shandong, China: Processing 3 t/h of turmeric residue for drying and pelletizing into organic fertilizer, meeting Japan's JAS organic standards for export.
Next Steps for Collaboration
To proceed with our services, kindly provide the following information so we can issue a formal URS and detailed quotation within 24 hours:
- Type of material, initial moisture content, target moisture content
- Planned processing capacity (t/d or t/h)
- On-site steam/electricity/gas conditions and pressure levels
- Requirement for explosion-proofing, GMP, organic, or CE certification.
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