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Sudarshan Engineering Works is a trusted and renowned groundnut oil expeller machine manufacturer in India that provides full Groundnut (Peanut) Oil Mill Plants, a process involving cleaning of seeds, oil extraction, filtration, solvent recovery and refining.
Having decades of design and manufacturing experience, we are able to provide highly sophisticated Groundnut Oil Extraction Machinery and turnkey oil mill equipment that is relied on by our customers both in India and abroad.
Whether you are establishing a small-scale peanut oil pressing plant or a big industrial Groundnut oil Processing plant, our systems guarantee high oil production, minimal energy consumption, and high quality products; all with our after sales services and technical knowledge
Groundnut oil, also called as peanut oil, is one of the most consumed edible oils which possess high smoke point, a mild taste and long shelf life which makes it suitable in processed foods and for cooking and frying.
Additionally, its healthful property (rich in monounsaturated fats and Vitamin E) and industries (margarine, cosmetics, and pharmaceuticals) reliance have played an important role in the gradual wider acceptance of its use in the global oil market. The establishment of a groundnut oil mill plant is thus a lucrative investment project in both the domestic and export markets.
A Groundnut Oil Mill Plant is a combined plant that transforms groundnuts into oil that can be consumed after undergoing several mechanical and chemical treatments. It has specially designed cleaning, decortication (de-shelling), flaking, cooking, pressing, filtration, and solvent extraction equipment. At Sudarshan Engineering Works, each turnkey Groundnut Oil Extraction Plant is designed to meet your capacity (5 TPD 500 TPD), raw materials available, and automation needs. We guarantee total optimization of the process – raw seed to processed refined oil.
The process of groundnut oil extraction is divided into several stages, and each stage is carefully controlled to guarantee that the produced oil is pure and of the best quality ever. The yield, flavor, and quality of the end product are significantly determined by each phase of the production process.
The explanation below describes the process of a Groundnut Oil Mill Plant in detail – starting with raw seed use and the production of refined edible oil.
The procedure starts with grading and cleaning of the raw groundnuts. As the peanuts that are harvested usually have foreign substances such as dust, stones, sticks, broken shells and metal pieces, cleaning is done to ensure the longevity of the machine and the quality of oil.
The seeds are then subjected to a vibrating screen cleaner to remove heavy impurities.
Then, a destoner will separate heavier stones and sand particles and a magnetic separator will remove metallic contaminants.
Once they are washed, the seeds are graded in accordance with size and quality with the help of the grader or separator, thus guaranteeing the homogeneity of the processing and increased efficiency of the Groundnut Oil Extraction Machinery.
After cleaning and grading the seeds, they are lifted and placed in buffer bins or silos until they are dehulled.
Groundnuts contain a thick outer layer (hull) which needs to be peeled off to get to kernels which hold oil.
During this process, the cleaned nuts are passed through a peanut decorticator which consists of a rotating drum or rubber roller which cracks the shell without breaking or bruising the kernels.
The air flow then separates the lighter shells and heavier kernels using a blower or aspirating system.
Correctly decorticated kernels yield:
The shells that are no longer needed are gathered and utilized as boiler fuel, organic compost or animal bedding making sure there is no wastage in this phase.
Following the dehulling process, the kernels of groundnut are introduced to the extraction of oil in an efficient manner. This phase aims at making the oil-bearing cells soft and ruptured to enable oil to be released easily when pressed.
Flaking:
The kernels are processed through a seed flaking machine which includes two counter-rotating rolls through which the kernels are flattened into thin flakes (0.3-0.5 mm thick). This will enhance the surface area and disintegrate the oil cells, which enhance the extraction efficiency.
Conditioning:
The flaked material is then cooked in steam in a vertical or horizontal steam cooker. The cooking process modifies moisture (to approximately 810 percent) and temperature (7595 C), which makes the flakes soft and coagulates the proteins, and enables the oils to free-flow during pressing.
Conditioning is also good in increasing flavor stability, and reducing the formation of free fatty acids in the oil.
A steam boiler is used to provide the necessary steam, and a material conveyor is used to move the conditioned flakes to the Peanut Expeller part.
The most important part of the plant is the oil expeller, or screw press.
Conditioned groundnut flakes are passed in the expeller which is made of a rotating screw shaft that is confined in a perforated barrel. The screw, when turning, presses the material against the decreasing pitch, putting pressure on it gradually.
The oil is pushed out through the holes in the barrel and is collected in a trough beneath.
In the meantime, the solid residue (oil cake) is pushed out at the discharge end.
The Peanut Oil Expeller in Ludhiana or Groundnut Oil Press Machine usually eliminates 85-90 percent of the oil in the seeds. Later solvent extraction is used to recover the remaining oil in the cake.
The expelled crude oil is full of fine particles and gums, therefore, it is filtered through a screen or settling tank before filtration.
Benefits of Mechanical Expelling:
The expeller plant is also equipped with gear reduction units, cooling and oil tanks to ensure smooth and safe operation.
The resulting crude oil after pressing still has suspended solids, moisture, and impurities. In contemporary systems, filters come with automatic pump feed, cake discharge system and safety valves to maintain the performance consistency.
The oil is filtered and then stored in mild steel or stainless-steel storage tanks that have:
At this point, the filtered crude oil may be sold directly (if it is of acceptable quality) or sent to the oil refining plant to be purified further.
The oil cake still contains approximately 58 percent oil even after mechanical expelling that can be extracted economically through solvent extraction plant.
Process Overview:
The benefits of Solvent Extraction:
The crude oil that has been expelled or solvent extracted is dirty and contains free fatty acids along with phospholipids (gums), waxes, pigments and odor-producing compounds. The oil is refined through a multi-stage refining process so as to make it edible.
Stages of Oil Refining:
The resulting product is pure light-colored, neutral-smelling groundnut oil that can be bottled or can be put on sale in the edible oil market.
The step of groundnut oil refining is performed in stainless-steel reactor which is provided with the heat exchangers, agitators, and vacuum pumps to stabilize the required process parameters.
All the by-products will add extra revenue to your Groundnut/Peanut Oil Manufacturing Plant., making your operation profitable.
A Groundnut Oil Mill Plant is a continuous, interlinked production line with all of its parts, such as seed handling and refined oil, working together to achieve the optimum results.
Sudarshan Engineering Works, the industry-leading groundnut oil expellers, focuses on designing tailored groundnut oil manufacturing plant layouts to suit the client space, capacity and automation needs.
Modern groundnut oil mill plant consolidates all the processes mentioned above into a turnkey system. The units are strategically placed to maximize the flow of materials, minimise handling time as well as increase energy efficiency.
The integrated design allows the operators to control, monitor and optimise the entire process of groundnut oil extraction using a single control panel to guarantee maximum production with minimum downtime.
Sudarshan Engineering Works does not only supply Peanut oil extraction machines but it offers total project support-concept to commissioning:
This will guarantee that all clients get ready-to-run Groundnut Oil Extraction Mill Plant which provides high throughput, excellent oil quality, and minimal running costs.
The overall expenses involved in establishing Groundnut Oil Mill Plant are determined by:
We provide modular systems to enable you to start small and expand at a later time.
Our engineering team offers affordable project layouts, ROI calculations, and energy audits in order to enable you plan efficiently.
We offer end-to-end solutions to make your groundnut oil extraction project a success whether you are a first-time investor or an established processor interested in adding to capacity.
Our specialists can provide you with free feasibility study, project layout and a unique quotation with your budget and capacity.
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