Walnut oil production line is a series of equipment to obtain high quality walnut oil, walnut through cleaning, crushing, hulling, roasting, pressing, leaching, refining, dewaxing, deodorizing and other processes to obtain purified walnut oil.
Walnut oil production process:
Fresh walnut kernel → peeling → cleaning → drying and roasting → screw pressing → oil → hydration degumming → deacidification → drying → decolorization → vacuum deodorization → compound antioxidant and nutrient enhancer → mixing → cooling → filling → finished product Refined walnut oil
Walnut oil press equipment adopts twice pressing method to obtain walnut oil. The equipment mainly includes walnut hulling machine, walnut shelling machine, hydraulic oil press, screw oil press, walnut oil refining equipment, etc. Walnut processing equipment can retain the nutrition in the walnut kernel, has high oil yield and low residual oil rate in the cake. The nutrition in the walnut cake is also retained and the cake is well prepared for deep processing. The refined walnut oil has high quality and can be packaged directly for sale. Walnut oil press equipment is suitable for small-scale walnut oil production. We also supply walnut oil extraction equipment which is suitable for large-scale walnut oil processing plant.
Features of Walnut Processing Equipment
- Walnut processing equipment adopts twice pressing technology to maximize the oil yield.
- The nutrition in the walnut kernel is retained in the walnut oil and cake.
- The complete process helps you to process walnut from hulling to refining.
- Walnut oil refining equipment is easy to operate, has low energy consumption, good refining effect and the quality of oil is effectively increased.
Processes of Walnut Oil Production Line
The harvested walnuts are put into the walnut hulling machine to remove the walnut hulls.
This walnut processing machine integrates the functions of hulling and washing. It adopts high speed rotating hob to cut off the hulls. The uncut hulls are removed by the steel brush in the walnut machine. The hulled walnuts are washed to remove the mucus on the surface.
The hulled walnuts are first graded by walnut grading machine and then cracked by the walnut cracking machine. Walnut cracking machine adopts rollers to crack the walnuts. The mixture of walnut shells and kernels are separated by the walnut shell and kernel separator.
Walnut kernels enter the walnut hydraulic oil press for the first pressing of walnut oil. This walnut oil extraction machine adopts hydraulic pressure to press the walnut kernels. The oil obtained is filtered. Walnut oil pressed by this walnut processing machine has high quality.
Walnut cake discharged from the hydraulic oil press has high residual oil rate and is twice pressed by screw oil press to maximize the oil yield. Screw oil press utilizes the pressure in the barrel to press the walnut kernels. Before twice pressing, the walnut cake is cooked in the flat pan oilseed cooker, which increases the oil yield. Then the cake is lifted into the screw oil press. The cake obtained from twice pressing has low residual oil rate and is used for deep processing. The crude walnut oil is filtered.
The filtered walnut oil from the first pressing and second pressing is refined by the refining equipment to increase the quality of the oil. By degumming, deacidification, bleaching, and deodorization, the impurities in the crude walnut oil are removed. Here is the process:
1) The filtered crude walnut oil is pumped into the refining pot and is preheated. With stirring, alkali liquor is added which results in the formation of soapstock. Then the oil is settled and the soapstock is removed. The oil is washed with hot water for several times and then pumped into the bleaching pot.
2) After vacuum dehydration in the bleaching pot, bleaching clay is added for bleaching process. Then the mixture is filtered to remove the bleaching clay.
3) The bleached oil is pumped into the deodorization pot and is distilled under vacuum.
The refining process of walnut oil
- degumming hydration:The colloidal impurities in crude oil are mainly phosphorus. The presence of gelatinous substances such as phospholipids not only reduces the quality of the oil, but also promotes transitional emulsification between the fat and the lye during the alkali refining and deacidification process, which increases the difficulty of separation of the saponins and increases the loss of neutral oil. Therefore, it should be removed first.
- Walnut oil deacidification:Oil deacidification is mainly to remove free fatty acids in crude oil, as well as a small amount of colloids, pigments and trace metals in the oil. Deacidification operation is one of the important factors that directly affect the yield and quality of oil refining. The most widely used in industrial production is alkali refining and deacidification.
- Walnut oil decolorization:The oily color and some other impurities must be decolorized to reach the product quality standard. At the same time, it provides more favorable conditions for deodorization and refining. Decolorization must meet the final requirements of the color and luster of the product; remove relevant pigments and quantitative metals; further remove residual traces of saponins, phospholipids and other colloidal impurities and certain odor substances in the oil; remove polycyclic aromatic hydrocarbons and residual pesticides; reduce oil quality Oxidation value.
- Walnut oil deodorization:The purpose of oil deodorization is to remove odor-causing substances in the oil and other substances that are easy to volatilize, improve the smell and color of the oil, and increase the stability of the oil. The peculiar smell of oil, the peculiar smell produced by decolorization, the clam smell produced by the oxidation of oil, etc. In the deodorization stage, these unpleasant odors are required to be sprayed directly into the steam distillation at high vacuum and high temperature to remove them.
Technical characteristics of walnut oil production line
Highly automated: The latest model of equipment adopts a PLC control system to achieve automated control and regulation of the production process. Through the touch screen interface, operators can easily monitor and adjust various production parameters, improving production efficiency and product quality.
Efficient and energy-saving: The equipment fully considers energy-saving requirements in the design and manufacturing process, adopts low-energy and high-efficiency motors and transmission systems, and reduces energy consumption in the production process. At the same time, the process flow and equipment structure have been optimized, reducing the waste of raw materials and improving production efficiency.
Environmentally friendly and green: The equipment is equipped with advanced environmental protection devices such as oil-water separators and exhaust gas recovery devices, which can effectively treat wastewater and exhaust gas during the production process and reduce environmental pollution. In addition, the equipment also adopts a low-noise design to reduce the impact of production noise on the surrounding environment.
Intelligent management: By integrating advanced sensors and monitoring devices, the latest models of equipment can monitor various parameters in the production process in real time, such as temperature, pressure, flow rate, etc., and automatically adjust them as needed. At the same time, the equipment also has remote monitoring and fault diagnosis functions, which facilitates remote management and maintenance by enterprise managers.