Horizontal Softening Kettle – Optimize Oilseed Pretreatment, Increase Yield
What is a Horizontal Softening Kettle?
The horizontal softening kettle (also known as a horizontal softening roaster) is an essential pretreatment equipment in the oil pressing process. Its primary function is to soften and dry oilseeds before pressing. By adjusting moisture content and temperature, it improves the plasticity of materials, reduces moisture levels, and ensures that pressed flakes become thinner and less prone to breaking. This creates optimal conditions for subsequent cooking, pressing, and extraction processes, ultimately increasing oil yield.
Working Principle of Horizontal Softening Kettle
The horizontal softening kettle uses both direct and indirect steam to heat and moisturize oilseeds. The rotating drum continuously turns the material, ensuring even exposure to heat and moisture. This process could softens the cellular structure,reduces moisture to optimal levels,improves plasticity for better flaking and prepares seeds for efficient oil extraction.After softening treatment, materials enter the flaking stage with ideal physical properties, resulting in thinner, more uniform flakes during pressing and higher oil yield.
Main Advantages of Huatai RHG Horizontal Softening Kettle
1. Uniform Softening, No Burning
The rotating drum design ensures materials tumble evenly during processing. This gentle, continuous motion prevents local overheating or burning, guaranteeing consistent softening throughout the batch.
2. Significant Energy Savings
Compared to traditional vertical softening kettles, the RHG series consumes only about one-tenth of the installed power for the same output. This dramatic reduction in energy consumption directly lowers production costs.
3. Durable and Low Maintenance
Our horizontal softening kettle is built with high-quality materials and robust design, offering long service life and extremely low failure rates. The simple structure means fewer parts requiring maintenance, reducing downtime and maintenance costs.
4. Flexible Operation
Residence time can be easily adjusted according to different oilseed varieties and material characteristics. Whether processing soybeans, rapeseed, or peanuts, operators can quickly adjust settings for optimal results.
Applicable Oilseeds:
Our horizontal softening kettle is versatile and handles a wide range of materials:
- High-oil seeds : Rapeseed, peanuts, sunflower seeds
- Low-oil seeds : Soybeans
- Hard-shell seeds : Cottonseed, palm kernel
- Others : Sesame, various nuts and grains
It is particularly effective for oilseeds with low oil content, high shell content, low moisture, or hard texture that require improved plasticity before flaking.
Why Softening is Crucial in Oil Pressing
Softening is a critical step before flaking, especially for hard or low-moisture oilseeds. Proper softening:
✓ Improves plasticity and reduces breakage during flaking
✓ Ensures uniform flake thickness
✓ Prepares materials for efficient cooking and pressing
✓ Maximizes oil recovery in both pressing and extraction stages
Without adequate softening, flakes become uneven or powdery, leading to lower oil yield and higher residual oil in meal.
Technical Specifications
| Model | Capacity(t/d) | Power(kw) | Rotate speed(m/s) |
| WRHG120 | 80 t/h | 3 kw | 1-4 m/s |
| WRHG160 | 250 t/h | 7.5 kw | 1-4 m/s |
| WRHG200 | 450 t/h | 15 kw | 1-3 m/s |
| WRHG260 | 1000 t/h | 30 kw | 1-2 m/s |
Why Choose Huatai Horizontal Softening Kettle?
✅ Efficient and reliable – Achieves uniform softening with minimal energy consumption
✅ Robust construction – Long service life, low maintenance costs
✅ Flexible adjustment – Adaptable to various oilseed types
✅ Integrated design – Easy installation and operation
✅ Comprehensive support – From layout design to after-sales service
Frequently Asked Questions
Q: What is the difference between horizontal and vertical softening kettles?
A: Horizontal kettles use a rotating drum for gentler, more uniform material handling with significantly reduced energy consumption – typically 90% less installed power compared to vertical kettles of the same capacity.
Q: Can this machine also be used for drying?
A: Yes, it effectively reduces moisture content during the softening process, making it suitable for both softening and drying applications.
Q: What heating medium is required?
A: The standard design uses steam, but we can also configure for thermal oil heating based on your plant setup.
Q: Do I need softening for all oilseeds?
A: Softening is essential for hard, low-moisture, or high-shell oilseeds such as cottonseed, palm kernel, and soybeans. For soft, high-oil seeds, it may be optional depending on your process requirements.
