Configuration options for peanut oil production lines of different sizes: comparison of small, medium and large-scale production lines

The selection of a peanut oil production line typically depends on processing capacity, raw material conditions, automation requirements, and long-term investment plans.

Peanut oil production lines of different sizes require different machine combinations. A systematic processing system designed around raw material pretreatment, pressing, filtration, and finished oil processing, along with the specific requirements for different machines, also varies. However, the core objectives are to improve raw material utilization, stabilize production operation, and ensure consistent oil quality. Small peanut oil production lines require machines with lower output, while medium and large production lines require more machines and have higher requirements for the coordination between them.

Overall process flow of peanut oil production line

A standard peanut oil production line typically includes the following processes:

Cleaning → Magnetic separation → Destoning → Crushing → Pressing → Steaming and roasting → Pre-pressing/pressing → Filtration → Finished oil processing

Each process plays a specific role in the entire oil processing procedure:

• Remove impurities and protect backend equipment
• Improve pressing efficiency and oil yield
• Maintain continuous and stable feeding
• Reduce residual oil content in oilseed cake
• Improve crude oil clarity

Compared to single-machine oil press equipment, a complete peanut oil production line has more obvious advantages in continuous production, operational stability, and oil quality control.

Core equipment components of a peanut oil production line

1. Raw material pretreatment system

The pretreatment section directly affects the subsequent pressing effect and the stability of equipment operation. The configuration varies depending on the size of the production line, but it typically includes the following equipment:

• Peanut shelling equipment: used to separate peanut shells from peanut kernels, reducing wear on subsequent equipment and improving overall processing efficiency.
• Vibrating cleaning screen: Used to remove straw, dust, large particles and other foreign objects from peanuts.
• Magnetic iron removal device: Removes metal impurities through magnetic separation, avoiding damage to crushers, pressing machines and oil press equipment.
• Gravity destoner: It uses the difference in material density to separate stones and heavy impurities, improve the cleanliness of raw materials and ensure the safe operation of the equipment.
• Roller crusher: Crushes peanut kernels into more uniform particles, facilitating stable subsequent steaming, roasting, and pressing processes. Compared to traditional crushing structures, the optimized roller crushing system improves material uniformity and enhances equipment feeding stability.
• Pressing equipment: By pressing materials into thin sheets, it improves the uniformity of heating and the efficiency of subsequent oil extraction.
• Steaming and frying conditioning equipment: used to adjust the temperature and moisture content of materials, providing more suitable process conditions for pressing, thereby improving oil extraction and reducing residual oil rate.

2. Pressing and oil extraction system

• Screw pre-press: Commonly used in medium and large-scale peanut oil production lines, it pre-extracts some oil to create conditions for subsequent deep pressing or leaching processes.
• Continuous screw oil press: As the core equipment of mechanical pressing, the continuous screw oil press is widely used because of its stable processing capacity and suitability for continuous industrial production.

Different pressing methods can be selected based on different market positioning and product needs:

• Hot pressing process: Higher oil yield and richer oil aroma.
• Cold pressing process: Processing temperature is lower, making it more suitable for the high-end edible oil market.
• Multi-stage pressing process: Suitable for industrial projects with low requirements for residual oil content.

Modern peanut oil production equipment not only focuses on pressure increase, but also emphasizes temperature control, continuous feeding stability, and overall energy consumption balance.

3. Oil filtration and clarification equipment

Vertical blade filter: Used for separating oil residue and suspended impurities from crude oil after pressing. Compared with traditional sedimentation methods, vertical filtration systems have the following advantages:

• Faster filtration speed
• The oil has higher clarity.
• Reduce grease loss during filtration
• More suitable for continuous operation

Filtered crude oil can also effectively reduce the load on subsequent refining processes.

Comparison of configurations for small, medium, and large peanut oil mills

Different processing scales have significantly different requirements for the number of equipment, the degree of automation, and the completeness of the process.

Small-scale peanut oil production line

Key features: small footprint; relatively simple installation requirements; easy operation and maintenance; suitable for areas with dispersed raw material supply, suitable for farmers, and can be used for combinations of multiple materials.

Common configurations include: cleaning equipment, destoning equipment, crushing equipment, steaming and roasting equipment, screw oil press, and a simple filtration system. This type of peanut oil production line is suitable for start-up edible oil processing enterprises and local market supply projects.

medium-sized peanut oil processing plant

Key features: Equipped with a complete pretreatment section; further improved level of automation; more stable feeding and oil output; more suitable for continuous production.

Recommended configuration: automatic conveying system, pressing equipment, continuous steaming and roasting system, pre-pressing equipment, and industrial filtration system. Medium-sized peanut oil mills are typically suitable for processing enterprises with a certain market scale and plans for future expansion, possessing sufficient peanut reserves to facilitate future production line expansion.

Large-scale fully automated peanut oil processing plant

Key features: high-capacity continuous operation; centralized electrical control system; automatic conveying and automatic control; reduced reliance on manual labor; easy integration with subsequent refining systems.

System advantages: more stable oil output efficiency; higher production consistency; reduced downtime; easier subsequent capacity expansion and upgrades; increased customer profits.

Main factors affecting the configuration and cost of peanut oil production lines

• Raw material quality: If the raw material has a high impurity content, a more complete cleaning and screening system is required. The quality of raw materials varies depending on the region.
• Processing capacity: Daily output directly affects equipment models, conveying systems, and automation configurations. Different output levels also determine different machine requirements.
• Pressing process: Cold pressing, hot pressing and pre-pressing processes have different requirements for equipment structure, and oil presses with different outputs are different, and the pressing parameters of the machines are also different.
• Factory layout: Factory size, logistics direction and supporting conditions will affect the overall engineering design.
• Automation level: Automation systems can improve production efficiency, but they also increase initial investment costs. They can effectively monitor the details of the entire factory and reduce the costs of factory downtime.

Peanut oil production line selection recommendations

Before investing in a peanut oil processing plant, it is recommended to carefully evaluate the following factors: raw material conditions, daily processing capacity, plant space, energy and supporting facilities, local labor costs, future expansion needs, and the market positioning of the finished oil products. As a grain and oil processing equipment manufacturer, QIE GROUP can provide complete support including equipment manufacturing, process design, installation and commissioning, and technical services.

Summary and Conclusion of Peanut Oil Production Line

Regardless of whether it's a small, medium, or large peanut oil production line, the final solution needs to be determined comprehensively based on the user's production needs, budget planning, and long-term operational requirements. A fully configured peanut oil production line can not only increase oil yield but also reduce downtime risks, optimize labor efficiency, and provide stable support for the company's subsequent large-scale development, helping users reduce their own risks and ensure maximum profits.