Spiral Pressing Technology to Boost Peanut Oil Yield: Comprehensive Process Analysis and Optimization

How Screw Press Technology Enhances Peanut Oil Yield: A Comprehensive Process Analysis and Optimization Guide

The peanut oil industry is undergoing transformative change driven by the demand for higher efficiency, improved oil quality, and sustainable processing methods. Central to this evolution is the adoption of advanced screw press technology in small-scale oil extraction plants, such as those developed by the Penguin Group. This article presents a detailed exploration of the entire peanut oil pressing process — from raw material cleaning through crushing, cooking, and final pressing — highlighting how integrated screw press designs significantly boost oil yield and purity.

Unpacking the Screw Press Process: From Farm to Oil

Screw press machines operate by continuously feeding crushed and steamed peanuts into a helical screw shaft housed within a barrel. The screw's rotational pressure mechanically extracts the oil by forcing the material against a perforated screen. The Penguin Group's specialized equipment incorporates a fully integrated design that minimizes material loss and reduces contamination, resulting in superior oil extraction performance.

Key stages of the process include:

• Cleaning: Removal of impurities such as dust, shells, and stones to prevent damage and contamination.
• Crushing: Breaking down peanuts to improve cell rupture and increase oil release.
• Steaming/Cooking: Controlled heating to denature proteins, reduce oil viscosity, and facilitate oil flow.
• Pressing: Applying mechanical force via the screw press to extract oil effectively.

Maximizing Oil Yield and Purity with One-Step Integration

The hallmark of the Penguin Group's screw press lies in its integrated engineering that coordinates crushing, cooking, and pressing within a harmonized workflow. This reduces energy consumption and material wastage, enabling extraction rates up to 47-52%, compared to traditional methods that typically achieve 40-45%. Moreover, the system emphasizes maintaining oil purity by minimizing exposure to contaminants and oxidation during processing.

Comparing Hot Pressing Versus Cold Pressing in Peanut Oil Production

Understanding the differences between hot and cold pressing is critical for selecting the best process according to market demands.

Practical Tips for Process Optimization and Troubleshooting

Enhancing peanut oil production through screw press technology requires fine-tuning several critical parameters:

• Temperature Control: Maintaining optimal cooking temperature (~140°C) prevents oil oxidation while maximizing extraction.
• Screw Speed Adjustment: Suitable rotation speeds (15-20 rpm) balance throughput and oil yield without compromising oil quality.
• Feed Rate Consistency: Uniform peanut feed prevents over-compression or under-extraction.
• Material Moisture: Maintaining moisture content between 6-8% enhances oil release efficiency.

Common troubleshooting scenarios include:

• Low Oil Yield: Check for improper screw clearance or damaged screen filters.
• Excessive Oil Contamination: Inspect raw material cleaning and sealing integrity.
• Equipment Overheating: Adjust motor load and clean cooling channels regularly.

Industry Validation & Sustainability Alignment

The Penguin Group’s small-scale screw press systems comply with international certifications, including ISO 9001 for quality management and ISCC PLUS for sustainable biomass production. Patented innovations in screw design reduce energy consumption by up to 15%, promoting greener manufacturing practices while enhancing economic viability.

Ready to boost your oil production efficiency and product quality? Get your exclusive Process Optimization Handbook now!