Sweet Potato Starch Dewatering for Grain and Starch Processing
LW650×2650E Decanter Centrifuge Delivers High-Capacity Starch Dewatering for Production Line Operations
Project Background
A grain and starch processing plant produces sweet potato starch for food and industrial markets. After extraction, the starch slurry needs dewatering before it goes to the drying stage. Their previous setup couldn't keep up during peak season when production volumes increase, and they needed equipment that could handle higher throughput reliably.
Customer Challenges
- Peak season production requires handling 20-30m³/h feed rates, which their existing equipment couldn't manage
- Starch slurry properties change depending on sweet potato variety and extraction process conditions
- The drying stage needs consistent cake moisture - too wet and it clogs, too dry and you lose yield
- Production runs 12-16 hours during peak season, so equipment reliability is critical
- Previous methods gave inconsistent results - some batches were too wet, others were over-dried
- Operators needed equipment that could run with minimal supervision during long shifts
ZK SEPARATION Solution
We tested their sweet potato starch slurry samples and recommended the LW650×2650E two-phase decanter centrifuge. This model handles high-capacity starch dewatering applications, with bowl and screw design suited for starch slurry characteristics.
Solution Implementation
-
Sample Testing & Parameter Setup
Lab testing of their starch slurry to set bowl speed, differential speed, and feed rate for their material properties and production targets
-
Equipment Configuration
LW650×2650E set up with bowl geometry and screw design for starch dewatering, using stainless steel construction for food-grade applications
-
Control System Setup
PLC control with touchscreen for operators to monitor performance and adjust settings, with alarms for vibration and overload conditions
-
Installation & Training
Installed during a scheduled maintenance break, then performance testing and operator training on startup, operation, and maintenance procedures
Project Overview
- Customer Industry Grain and Starch Processing
- Application Sweet Potato Starch Dewatering
- Equipment Model LW650×2650E
- Design Capacity 20-30m³/h
- Design Speed 2800 RPM
- Centrifugal Force 2854G
- Dimensions 6000×1550×1800mm
Processing Results
The LW650×2650E has been running in their production line for several months now, handling regular production and peak season volumes without problems.
Process Demonstration
Performance Results
- Processing Capacity: Handles feed rates in the 20-30m³/h range as designed, maintaining steady throughput during production runs
- Cake Moisture: Dewatered starch cake has consistent moisture content that works well with their drying equipment
- Separation Quality: Clear liquid phase with low solids carryover, which reduces the load on their wastewater treatment
- Operational Reliability: Runs continuously during production shifts with routine checks by operators, minimal vibration or issues
- Maintenance: Standard maintenance procedures, with wear parts accessible when replacement is needed
- Production Fit: Works well in their production line, with discharge rates that match their downstream equipment
Customer Feedback
"The LW650×2650E handles our starch slurry well. During peak season when volumes are higher, it keeps up with the line. Cake moisture stays consistent, which helps the drying stage run better. Installation was straightforward, and the operators picked up the controls quickly. It's been reliable since we put it in."
— Production Manager, Grain and Starch Processing Plant
ZK SEPARATION Technical Advantages
High-Capacity Design
The LW650×2650E is built for high-throughput applications. The 650mm bowl diameter and 2650mm length handle large volumes of starch slurry while maintaining separation efficiency.
Bowl Configuration
Bowl geometry and screw design are set up for starch dewatering, giving enough residence time for water removal without over-processing the starch.
Drive System
Main motor drives the bowl at 2800 RPM, generating 2854G centrifugal force. The back-drive controls differential speed for proper cake discharge.
Process Control
Operators can adjust differential speed and monitor torque from the control panel, allowing adjustments for different slurry characteristics or production needs.
Equipment Reliability
Built for continuous operation in production environments, with solid construction and protection systems for vibration and overload conditions.
Operational Efficiency
Automated operation reduces operator attention needed, and the dewatering process lowers moisture before drying, which improves overall production efficiency.
