Sludge drying is an intermediate sludge treatment process that consists of evaporating the water in the sludge. Jiutian Sludge Dryer is used for drying a variety of sludges, biosolids and by-products, to generate dry stable products, reduce disposal cost and convert waste into marketable by-products.
Sludge is the industrial waste generated during the production process of municipal sewage processing. Because sludge has many disadvantages such as high moisture content, high viscosity, high water holding capacity, and low calorific value. It is difficult to achieve industrial utilization. Jiutian operated a series of technical researches on the current market situation of sludge treatment and the characteristics of sludge in various regions. Jiutian Company concentrating created a new generation of sludge rotary drum drying system, drying product moisture can be reduced less than 25%, it totals achieved the standard of sludge landfill and further incineration processing conditions. The technology of equipment gets absolutely mature enough, also it has a stable capacity for operation and very convenient to operate and maintain.
Features and advantages:
1. The heat source can be low cost steam, biomass, natural gas, coal, etc.
2. Simple and digital control panel for easy operation and maintenance
3. Sludge weight will reduce by approximately 60%, the volume of sludge will reduce by 4-5 times.
4. Due to weight and volume reduction, the transportation cost of sludge will reduce significantly.
5. Reduction in moisture content, the calorific value of sludge increases.
6. High drying temperature will sterilize and deodorize the sludge.
Materials:Widely used for drying sewage, sludge, mineral slag, solid waste, MSW, RDF, etc.
Application:Drying sludge into stable solids for disposal or reuse.
Wet sludge with about 80% moisture and high viscosity is first pre-dewatered by three-belt filter presses, reducing moisture to 55–60%. It then enters the rotary drum dryer for staged drying.
Inside the drum, the material passes through six zones. In the feeding zone, sludge contacts high-temperature hot air for rapid surface evaporation. In the crushing and cleaning zone, lifting and beating devices break sticky lumps into 20–40 mm granules, forming a material curtain to increase heat exchange while preventing wall adhesion.
In the main drying and secondary crushing zones, the loosened material is continuously lifted and dispersed, with particle size reduced to 10–20 mm (as required) and moisture further decreased. In the enhanced drying zone, dense lifting plates ensure sufficient heat absorption to meet discharge standards.
Finally, in the discharge zone, the drum has no lifting plates to minimize dust, and the sludge exits smoothly with a final moisture content of about 20–25%, completing the drying process.
| Model | Capacity(t/h) | Evaporation Moisture Capacity(t/h) | Moisture Content of Raw Material(%) | Drop Moisture Content(%) | Drying Temperature (℃) | Power(kw) | Total Weight (kg) | Spatial Footprint(m²) |
|---|---|---|---|---|---|---|---|---|
| JTNG1412 | 5.4 | 1.2 | 55-60% | 20-25%（adjustable) | 850±100℃ | 65 | 25000 | 6m*18m |
| JTNG1615 | 6.6 | 1.9 | 115 | 48000 | 6m*18m | |||
| JTNG1916 | 13.5 | 3.0 | 138 | 67000 | 8m*24m | |||
| JTNG2218 | 19.8 | 4.4 | 170 | 85000 | 10m*24m | |||
| JTNG2518 | 25.6 | 5.7 | 240 | 92000 | 10m*30m | |||
| JTNG2522 | 31.5 | 7.0 | 320 | 110000 | 10m*36m | |||
| JTNG2823 | 41.4 | 9.2 | 450 | 150000 | 10m*36m | |||
| JTNG3430 | 80.0 | 17.7 | 680 | 265000 | 10m*48m |
With strong overload resistance and large processing capacity, it significantly minimizes fuel consumption and overall drying costs per ton.
Adopts co-current drying method, where hot air and wet materials enter from the same side, ensuring high evaporation intensity and high thermal efficiency with low outlet temperature.
Operational parameters can be adjusted according to material properties, forming a stable full-section material curtain for thorough heat and mass exchange.
Features improved feeding and discharging systems to prevent clogging and backflow, along with an optimized internal structure that prevents material sticking and enhances heat transfer.
From solution design to equipment manufacturing and on-site installation and commissioning, Jiutian provide complete one-stop services. The equipment is exported to over 100 countries including UK, Russia, Malaysia, the Philippines, Italy, Israel, Indonesia, Malaysia, Ethiopia, Nigeria, Congo, South Africa, Pakistan, India, Egypt, etc. Looking forward to cooperating with you. The following is the project site of our client.
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