What machines are needed for a mustard oil mill plant?

In today's food industry, mustard oil is highly sought after for its unique flavor and health benefits. If you're considering setting up or expanding your mustard oil processing plant, it's important to understand the equipment you need. We'll provide a comprehensive guide to help you choose the right equipment and ensure your production process is efficient and cost-effective.

Seed pretreatment equipment

Seed pretreatment is the first step in mustard oil production. Its purpose is to ensure that the seeds entering the pressing stage are of high quality and free of impurities and moisture. The following machines are used in this stage:

Cleaning equipment : used to remove impurities in mustard seeds, such as soil, sand, straw, etc. Through sieves with different apertures, impurities of different sizes are separated to ensure the purity of the seeds.

Shelling machine : For mustard seeds with hulls, the shelling machine can remove the hulls and increase the oil yield.

Crusher : Crushes the seeds into smaller particles, increasing the surface area of the seeds for subsequent steaming, frying and pressing.

Steam cooker : The crushed seeds are steamed and fried to remove moisture and make it easier to separate the oil inside the seeds. This step is crucial to improving the oil yield and oil quality.

Pressing equipment

The pre-treated seeds are transported to the pressing equipment, where the oil is squeezed out of the seeds through mechanical pressure. Common pressing equipment includes:

Screw oil press : This press uses the rotation of the screw shaft to generate pressure and squeeze the oil from the seeds. This type of press has a simple structure, is easy to operate, and has a high oil yield. It is one of the most commonly used pressing equipment in mustard oil factories.

Hydraulic oil press : This press uses a hydraulic system to generate pressure to squeeze the seeds. The hydraulic press provides uniform pressure, better preserving the nutrients in the oil, making it suitable for production environments with high oil quality requirements.

Solvent extraction equipment

Extractor: The extractor is the core equipment of the extraction process, providing the key to ensuring the complete contact between the mustard seeds and the solvent, and ultimately the extraction of the oil. Common extractor types include rotary extractors, loop type extractors, and drag chain extractors.

Desolventizer: Desolventize the wet meal after extraction to remove residual solvent. Common desolventizers include DTDC desolventizer, which integrates preheating, desolventizing and drying functions.

Stripping tower : The stripping tower is mainly used for evaporation and stripping of mixed oil, achieving effective separation of solvent and oil, thereby obtaining extracted crude oil. The mixed oil from the extractor and degassing machine contains a large amount of solvent and oil, which needs to be processed by the stripping tower.

Solvent recovery system: It consists of a condenser, separator, pump, etc., which recovers the solvent volatilized during production and recycles it.

Filtration equipment

The squeezed crude oil contains impurities and needs to be filtered to improve the transparency and purity of the oil. Commonly used filtering equipment includes:

Plate and frame filters consist of multiple filter plates and filter frames arranged alternately. Crude oil is forced through the filter cloth under pressure, trapping impurities on the surface while clean oil flows through. Plate and frame filters offer excellent filtration performance and are suitable for large-scale production.

Vertical leaf filter : It is a highly efficient solid-liquid separation equipment. The liquid to be filtered (such as crude oil) is pumped into the tank and passes through the surface of the filter leaf. Impurities are retained on the surface of the filter leaf, and the clean liquid is discharged through the filter screen.

Refining equipment

In order to meet edible standards, the filtered crude oil needs to be refined to remove impurities, odors, pigments, etc. The refining equipment mainly includes:

Degumming : The colloidal substances in mustard oil are mainly phospholipids, which affect the transparency, stability and shelf life of the oil. By adding chemicals such as acids or alkalis, the colloidal substances such as phospholipids are removed from the crude oil.

Deacidification : The free fatty acids in mustard oil can increase the acid value of the oil, affecting its taste and shelf life. Alkali refining is mainly used to neutralize the free fatty acids in the crude oil with alkali, reducing the acid value.

Decolorization : The color of mustard oil comes primarily from pigments in the raw materials and some colored substances produced during processing. Adsorption is usually used to remove pigments from the oil using adsorbents such as activated clay and activated carbon, making the oil lighter in color.

Deodorization : Mustard oil may contain some odorous substances that affect the flavor of the oil. Using the principle of vacuum distillation, under high temperature and vacuum conditions, the odorous substances in the crude oil are removed to improve the flavor of the oil.

Storage and filling equipment

Oil storage tank : used to store refined mustard oil to ensure that the oil is not contaminated during storage.

Filling equipment : such as automatic filling machines and sealing machines, used to fill mustard oil into products of different specifications to meet market demand.

Auxiliary equipment

In addition to the above main equipment, the mustard oil factory also needs some auxiliary equipment, such as conveying equipment, storage equipment, heating equipment, etc. to ensure the smooth progress of the production process.

Building an efficient and professional mustard oil production line requires careful selection and configuration of machinery and equipment. As a manufacturer of edible oil processing equipment, we understand the importance of each piece of equipment and are committed to providing our customers with the highest quality equipment and services. If you are planning to build a mustard oil plant or need equipment consultation, please feel free to contact us. QIE Group will provide you with professional solutions and high-quality equipment.