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Acid oil and soapstock, as low-value by-products of vegetable oil refining, represent a significant opportunity for value creation when processed with the right technology. Ocean's professional acid oil / soapstock processing line is a complete industrial system designed for the efficient and environmentally sound conversion of these materials into high-purity industrial raw materials. Our solutions are built around the proven, patented “Environmental Organic Acid Method,” which fundamentally differs from traditional acidulation processes. It utilizes small-molecule organic acids to achieve gentle and thorough reactions under normal temperature and pressure, effectively eliminating impurities and moisture while transforming by-products into valuable co-products. This tailor-made system helps oil processing enterprises achieve full resource recycling, turning waste into profit with stable, low-cost, and sustainable continuous production.
1.Raw Material Receiving and Homogenization
Crude acid oil or soapstock is first collected, filtered, and homogenized in the pretreatment section. This process removes large mechanical impurities and stabilizes the composition of the raw material, creating optimal and consistent feeding conditions for the downstream chemical reaction process.
2.Organic Acid Reaction & Demulsification
The homogenized material is precisely mixed with a specific small-molecule organic acid in a proprietary reactor. This triggers a targeted chemical reaction that breaks the stable emulsion of the soapstock. Unlike traditional methods that rely on strong sulfuric acid, this process uses a milder agent, producing cleaner acidified oil and a separable, valuable organic acid salt solution as a co-product. This is the key step that defines the entire line's efficiency and environmental performance.
3.Gravity Separation and Phase Splitting
Crude fatty acid is first dehydrated and then enters a high-vacuum distillation system equipped with professional evaporation equipment including theThin-Film Evaporator and fractionating column. Under precise temperature and vacuum control, pure fatty acids are efficiently separated from high-boiling residue ("foots"). The low-residence-time working principle of the Thin-Film Evaporator effectively avoids thermal deterioration of heat-sensitive fatty acids and guarantees product purity and color. An optional fractionation stage can further separate mixed acids into high-purity individual components like stearic or oleic acid, enriching the product categories of the fatty acid production line.
4.Vacuum Dehydration and Purification
The primary acidified oil is sent to a vacuum dehydration system for deep drying and degassing. Under high vacuum and controlled temperature, residual moisture, volatile substances, and odors are effectively removed. This step significantly improves the oil's oxidative stability and overall quality, preparing it for final filtration.
5.Fine Filtration and Polishin
The dehydrated acid oil undergoes multi-stage fine filtration to remove any remaining trace suspended particles, ensuring the final product has exceptional clarity and low impurity content, meeting the strict standards for downstream industrial applications.
6.Co-Product Processing & Finished Product Storage
The separated organic acid salt solution is processed in a dedicated system, where it's neutralized and concentrated to produce a high-quality liquid organic co-product. This co-product is a valuable carbon source for wastewater treatment plants, adding significant economic value. Simultaneously, the refined acidified oil is cooled and transferred to finished product storage tanks.
Superior “Environmental Organic Acid” Technology
Ocean’s acid oil production line is built on our patented “Environmental Organic Acid Method.” Unlike traditional sulfuric acid processes, this advanced technology operates under normal temperature and pressure, using a milder organic acid for the reaction. This results in a safer, more efficient process with significantly fewer by-product disposal issues, setting a new standard for sustainable oleochemical processing.
Maximized Value through Co-Product Generation
Beyond producing high-quality acidified oil, our process uniquely creates a valuable liquid organic co-product from the aqueous phase. This by-product is not waste; it is a saleable commodity used as an effective carbon source in wastewater treatment, opening an additional and substantial revenue stream for our clients and maximizing resource utilization.
Stable and Reliable Product Quality
The production line employs precisely controlled reaction, graded purification, vacuum dehydration, and fine filtration. Critical parameters like temperature, reaction ratios, and vacuum levels are strictly monitored. This ensures the finished acidified oil has low moisture and impurity content, high acid value, and excellent oxidation stability, with consistent quality from batch to batch.
High Automation and Easy Operation
Supported by a PLC centralized automatic control system, the production line achieves automated material handling, reaction control, separation, and purification. Core parameters are monitored in real-time with alarms and safety interlocks. The high degree of automation minimizes manual intervention, reducing labor costs and operational errors for reliable, long-term continuous production.
Ocean's advanced processing line, utilizing the “Environmental Organic Acid Method,” is highly adaptable to various raw material sources. It is primarily designed to process both crude acid oil and the more challenging wet soapstock generated from the refining of palm oil, soybean oil, rapeseed oil, sunflower oil, and animal fats. The technology is specifically engineered to handle feedstocks with high moisture and impurity content, efficiently converting them through chemical reaction to consistently produce high-quality finished acidified oil and valuable liquid organic co-product, regardless of the input variability.
The reaction kettle is the heart of the acid oil production line. Specially designed for the “Environmental Organic Acid Method,” it facilitates the precise mixing and reaction of soapstock with a small-molecule organic acid. Its robust construction and efficient agitation system ensure complete reaction and demulsification under normal temperature and pressure, which is critical for maximizing the yield and quality of the final acidified oil.
This is the crucial equipment for separating the reacted mixture into two valuable streams. It allows for efficient gravity-based separation of the upper acidified oil phase and the lower aqueous organic acid salt phase. Its design ensures a clean and continuous split, enabling the independent downstream processing and recovery of both valuable products.
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The vacuum dehydration tower is key equipment for deep purification of the acidified oil. Operating under high vacuum, it removes residual moisture, volatile impurities, and odors at a low temperature, preventing thermal degradation of the oil product. This step is essential for ensuring the low moisture content and high stability of the finished acidified oil.
This system serves as the polishing step for the acidified oil. Through coarse to fine graded filtration, it intercepts and removes the final traces of suspended solids and mechanical impurities, enhancing the product's clarity and quality to meet the stringent requirements of downstream oleochemical processing.
Q: What is the main difference between Ocean's acid oil production line and others?
A: The key difference is our core technology: the patented “Environmental Organic Acid Method.” While many lines use traditional sulfuric acid, which is hazardous and creates difficult-to-handle waste, our process uses a safer organic acid. It operates under normal temperature and pressure, is more environmentally friendly, and uniquely converts the aqueous by-product into a valuable liquid sodium acetate, creating an additional revenue stream beyond the main acidified oil.
Q: What are the by-products of this production process?
A: A major advantage of our “Environmental Organic Acid Method” is that it produces two valuable outputs. The primary product is purified acidified oil, ready for use as a raw material. The co-product is a high-quality liquid sodium acetate solution, which is not a waste but a marketable commodity widely used as an effective carbon source in wastewater treatment plants. This dual-output model maximizes resource utilization and profitability.
Q: What raw materials can be processed by the acid oil production line?
A: Ocean's acid oil production line is specifically designed to process a wide range of feedstock from oil refining, including crude acid oil and wet soapstock. It can handle materials from palm, soybean, rapeseed, sunflower oils, and animal fats. The process is highly adaptable, efficiently treating feedstocks with variable moisture and impurity levels, making it a versatile solution for different oil processing plants.
Q: What are the benefits of investing in an acid oil production line?
A: Investing in Ocean's solution enables your enterprise to recycle low-value oil refining by-products into high-value oleochemical raw materials and a saleable co-product, greatly improving overall project economics. The process boasts energy-saving design, high automation, and reliable operation, which reduces production and labor costs. Most importantly, it offers a safer, more sustainable, and more profitable alternative to traditional acidulation technologies, meeting both industrial environmental standards and your financial objectives.
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