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Sudarshan Engineering Works, having more than 50 years of engineering superiority, designs, manufactures, and installs complete oil milling systems that transform oil-bearing seeds into refined high quality edible oils. Our turnkey projects include all phases of the oil extraction process, starting with the seed cleaning and the preparation of the seed, all the way to the oil pressing process, filtration, refining, and the packaging of the oil.
Being an integrated solution provider, our Oil Mill Plants are equipped with a combination of sophisticated machinery and process technology to extract, purify, and refine natural vegetable oils with great efficiency using a variety of oil seeds. These plants can be used in small, medium, and large-scale production plants with capacities between 5 TPD and 500+ TPD.
Vegetable Oil Mill Plants are designed to meet both requirements of producing edible oil and industrial oil extraction, enabling high recovery of oil, high purity, and low operating expense. Each plant is designed specifically to suit your type of seed, capacity, space arrangement, and utility provisions.
We specialize in offering turnkey edible oil mill projects, in which we do all work, including designing, fabrication, and installation, training operators, and commissioning the project. As a company with global reach, Sudarshan Engg Works has been able to provide oil mill plants and expeller machinery to customers all over India, Africa, the Middle East, and South-East Asia as well, enabling small and large business owners and well-known brands to produce oil efficiently and profitably.
An Oil Mill Plant is a complete unit in which the oil-bearing seeds are refined systematically to extract pure edible-grade oil. It includes seed preparation, mechanical pressing, oil clarification, and finally refining to yield clear and stable edible oil of high quality, which can be consumed by humans. The entire process in the mill plant, which encompasses cleaning to deodorization, is critical in determining the yield, flavor, and purity of the end product.
Any edible high-quality oil starts with clean and well-prepared oilseeds. Seed Preparation is the first and most crucial step in the Vegetable Oil Mill Plant and involves cleaning, grading, and conditioning of the raw seeds to extract oil effectively. At Sudarshan Engg Works, we design seed preparation lines for all major oil-bearing seeds, which give maximum output and uniformity in oil yield.
We Process a Variety of Oilseeds:
Our plants are able to handle one-seed operations or multi-seed operations, depending on the availability of raw materials and the needs of the business.
Before the mechanical processing, seeds need to be cleaned and should not have any foreign materials in them. Through the cleaning process, stones, dust, broken kernels, sticks, metal pieces, and other impurities are removed. Common devices are vibratory screen cleaners, which are used to size-separate particles, aspirators, which are used to remove light impurities using air flow, destoners, which use density to separate, and magnetic separators, which are used to separate using a magnetic process. Effective cleaning helps avoid damage to the downstream equipment, reduces the load to filters, and minimizes the contamination of the crude oil. Screens and aspirator settings are set to each type of seed and inbound impurity load operationally, and regular inspection of magnetic traps and destoner discharge is essential in order to maintain continuous operation.
Some seeds (sunflower, and some types of groundnut, cottonseed) are partially or wholly dehulled. Dehulling is the process of separating kernels and husks with the help of impact or abrasive hullers or roller shellers. Removing hulls lowers the fiber content in the cake, enhances the quality of flaking, and, in most cases, yields more oil per tonne of the kernel. But, excessive dehulling may be harmful to the kernels, and yield may be decreased; hence, machines should be programmed to protect kernel integrity. Husks collected can be useful as boiler fuel or raw material in the use of compost/fiber.
The kernel is crushed or flaked to ensure easy release of oil. Seeds are pressed into uniform flakes with roller mills or flakers, providing more oil-bearing surface area and uniform conditioning. One of the controlled parameters is flake thickness: excessively thick flakes cause oil to be retained, and excessively thin flakes cause material to pack and block conditioning systems. To create uniform flake quality across all seed types, we provide flaker installations with variable roll gap, roll surface temperature, and feed rate.
This is the controlled heating and damping of flakes to release the oil in the cellular structures. Continuous conditioners or cookers add steam and retain a certain amount of temperature and retention time based on seed, for instance, mustard and groundnut hold different conditioning recipes than soybean or cottonseed. The right conditioning de-foams proteins that adsorb oil, lowers the viscosity of oil, and assists droplet coalescence, enhancing press yield. Excessive time of cooking darkens oil and contributes to oxidative degradation, whereas inadequate time of cooking decreases extraction. To provide consistent conditioning, our designs incorporate temperature and retention time controls, steam traps, and recovery of condensate.
The stable press operation requires uniform feeding. Screw feeders, piston feeders, or the gravimetric feeders are used to feed conditioned flakes to manage throughput and minimize feed surges. Constant feed ensures that there are no pressure spikes in the screw press, there is less mechanical stress on the gearbox, and that the moisture of the cake and the residual oil are consistent. Feed systems usually have surge hoppers and level sensors to control supply when there is maintenance or fluctuation in upstream production.
How the Expeller Operates and Equipment Specifications
An expeller consists of a rotating screw within a perforated barrel. As the flakes move through the screw, pressure rises on the progressive pitch of the screw, which causes the oil to push out through the barrel perforations, and the solids are pressed together and released as cake. The major design factors are screw profile, barrel length, pattern of perforation, gear reduction system, bearing and cooling system, and adjustable choke system to regulate back pressure. High-end expellers have interchangeable wear liners, strong gearboxes, as well as vibration and temperature monitoring.
The prepared seeds are then fed into the Oil Expellers (Screw Presses) after conditioning. This is the core of any Oil Mill Plant. The expeller forces the oil out of the seed material under high pressure and controlled heat. Two main products are obtained at this stage: Crude Oil (Unrefined) and Oil Cake (Residual Material).
Properties of Crude Oil and Cake
Our oil expellers are designed to ensure durability, continuous usage, and maximization of oil recovery with minimum residual content in the cake. They are available in different capacities, which are compatible with mustard, sunflower, soybean, groundnut, sesame, and all major oilseeds.
The post-expelling phase deals with the two key products, crude oil and oil cake. Each of these needs proper handling and additional processing to extract maximum benefit and satisfy quality specifications.
3A. Crude Oil -Clarification and Storage
Crude oil has suspended solids and entrained moisture immediately after pressing. The initial process is coarse filtration or decanting to separate large particles and then settling tanks, whereby the solids load is minimized by gravity separation. Tanks are sized such that they have an adequate retention time (usually 12-48 hours) to settle in; gentle heating can help improve viscosity and settling rates. To obtain a quicker clarification, fine solids may be removed quickly by means of centrifuges or decanter separators. Controlled storage, in horizontal or vertical oil tanks with thermal jackets where required, can minimize spoils and ready the oil, in turn, to be filtered, analyzed, or transferred to a refinery.
3B. Oil Cake -Handling and Upside options
The residual oil cake still has 6-8 percent oil (varies). The processing of options is subject to the business model:
Solutions such as screw conveyors, belt conveyors, aeration in storage silos, etc., are used to provide proper conveying, storage, and drying of cake (to guarantee quality and minimize spoilage or dust risks).
The last process is the Oil Refinery Plant, where crude oil is refined to produce clear, pure, odorless, and shelf-stable edible oil. At Sudarshan Engg Works, we provide both Batch Type Refinery Plants (5-25 TPD) and Continuous Type Refinery Plants (30 TPD and more). Our oil refining machines are designed to be efficient and of high quality.
All the refined edible oils manufactured in our plants are odorless, stable, and in line with the international food safety standards.
Refinery Technologies Offered
🔹 Batch Type Refinery (5–25 TPD)
Ideally suited to small and medium oil mills, multi-oil operations, and reduced capital investments.
🔹Continuous Type Refinery (30+ TPD)
Suited to large-scale production and commercial oil refining with PLC engineering, heat recovery, and continuous 24/7 operation.
We offer end-to-end oil mill and refinery solutions, including concept to commissioning. We have organized the method of our project delivery in a structuralized form and have documented it in order to achieve predictable results.
Our turnkey services include:
You receive a ready-to-operate plant, which is very optimized in terms of performance and profits.
We appreciate long-term relationships and provide you with continuous technical support:
