The rice bran oil production line includes pretreatment, extraction, and refining processes to obtain edible oil. Rice is a by-product of rice milling, and its oil content varies depending on the variety and the amount of impurities in the rice, typically ranging from 12% to 20%.
We are a manufacturer of rice bran oil pressing production lines and rice bran oil refining and processing equipment. Our company is engaged in the research and development of rice bran oil production equipment and has rich experience in the production design of rice bran oil equipment. The rice bran oil production equipment we manufacture is sold worldwide. The company’s main products include rice bran hydraulic pressing equipment, rice bran oil refining equipment, and rice bran oil production lines. We provide professional and high-quality full process services for domestic and foreign clients, including oil engineering consulting and design, equipment manufacturing, mechanical and electrical engineering system delivery, engineering general contracting, operation and maintenance.
We can provide refining processes according to different oil products and requirements
- According to customer needs and requirements, we can provide refining processes such as enzymatic degumming, anhydrous soap removal, pre decolorization, and two-stage capture of fatty acids;
- The entire workshop has a high degree of automation, with fully computerized display and automated control;
- Make the most of the waste heat in the production line and reduce steam consumption as much as possible;
- A device for odor capture was designed during the blowing of white clay cakes to eliminate odor pollution during the decolorization process and meet environmental protection requirements;
- The vacuum system adopts frozen vacuum or frozen water vacuum system, greatly reducing steam consumption and wastewater discharge;
- It has the advantages of high product yield, excellent oil quality indicators, and low consumption;
Rice Bran Oil Extraction Plant Introduction
Rice bran oil extraction plant produces rice bran oil using expansion extraction technology. The rice bran oil plant includes rice bran pretreatment & expanding workshop, rice bran oil solvent extraction workshop and rice bran oil refining workshop. Rice bran oil production line adopts rice bran expander to make the rice bran into porous expanded pellets, which improves solvent permeability and increases extraction efficiency. Adopts negative pressure evaporating system and mineral oil system, having the features of saving energy and good crude oil quality. Rice bran oil refinery plant adopts physical deacidification and deodorization technology, having high refining yield and the oil obtained has shallow color and good quality.
Rice Bran Oil Processing
Fresh rice bran oil making have three stages: rice bran pretreatment, rice bran extraction, and rice bran crude oil refining. Rice bran pretreatment means that the rice bran is puffed and dried and then enters the solvent extraction workshop to extract oil. The puffed rice bran has the effect of keeping fresh and can be stored. adopts an extractor specially designed for rice bran leaching and a rice bran steaming machine, which can well realize the leaching and desolventization of rice bran, and can run continuously for several years without failure. The use of rice bran preservation, puffing leaching, physical decolorization, physical deacidification and other processes can be used to process first-class rice oil that meets national standards.
The solvent extraction method is the most commonly process in the market, the residual oil rate is less than 1%. A full range of advanced rice bran oil processing solution, including raw material pretreatment technology, solvent extraction technology, physical refining technology and rice bran protein processing technology, recover higher quality rice bran protein, committed to optimizing technology processes, reuse processing by-products while increasing annual output, help rice bran oil mill achieve higher processing capacity and improve their products quality and profit.
Solutions For Rice Bran Oil Processing
1.Rice Bran Pretreatment & Expanding Workshop
rice bran→rice bran cleaning→rice bran and broken rice separation→conditioning→expanding→drying and cooling→to solvent extraction workshop
2.Rice Bran Oil Solvent Extraction Workshop
rice bran→solvent extraction→wet meal desolventizing→evaporating and stripping→solvent recovery→crude extracted rice bran oil
3.Rice bran oil refining equipment process flow
Leached rice bran oil → degum drying section → dewaxing section → primary decolorization section → physical acid removal section → alkali refining section → secondary decolorization section → deodorization section → degreasing section → finished oil
Technology Feature
1.Rice bran oil cake solvent extraction process, negative pressure evaporation technology, help to improve energy efficiency and heat recovery, and reduce steam consumption.
2.Rice bran oil refining, innovative continuous deacidification and deodorization process, help improve the overall refining efficiency, ensure the quality and food safety of rice bran oil, and also prolong the storage time.
3.Recover higher quality rice bran protein, help rice bran oil mill achieve higher processing capacity and improve their products quality and profit.
Rice Bran Pretreatment & Expanding Workshop
rice bran→rice bran cleaning→rice bran and broken rice separation→conditioning→expanding→drying and cooling→to solvent extraction workshop
The rice bran pre-treatment process includes bran and thresher rice separation, tempering, puffing, drying and other process.
Firstly, the rice bran is separated from the threshing rice to remove the impurities such as broken rice and coarse bran shells in the rice bran, after cleaning it up, the rice bran is sent into the tempering pot to adjust the temperature and moisture to a condition suitable for puffing.
The effect of puffing is to destroy the cellular organization of the rice bran and change the internal voidiness of the rice bran, while simultaneously boosting the permeability of the rice bran and improving the leaching efficiency. After puffing process, the rice bran enters the flatbed drying equipment for drying and cooling.
The pre-treated rice bran can be sent directly into the leaching plant for processing, or it can be stored first (for approximately one week).
1.Rice Bran Cleaning
First, the rice bran enters the cleaning screen in the rice bran oil plant to remove the impurities. Then roller magnetic separator is adopted to remove the iron impurities. Iron impurities can cause damage to the expander and influence the expansion effect.
2.Rice Bran and Broken Rice Separation
The rice bran goes through rice bran & broken rice separator to remove broken rice and whole rice. This process can ensure normal operation of the rice bran oil processing plant, reduce residual oil rate in the meal, reduce solvent consumption and increase the oil yield. The broken rice can be used for sugar and liquor making.
3.Rice Bran Conditioning
Conditioning is to preheat the rice bran and adjust the moisture content. The moisture content can decide the elasticity and plasticity of the expanded materials. Preheating can improve the expansion effect and increase the capacity. The rice bran enters the conditioner for conditioning process in the rice bran oil production line.
4.Rice bran Expanding
The conditioned rice bran enters the rice bran expander and direct steam is injected. By the rotating of the main worm shaft, the materials are extruded, heated, sheared and kneaded, the temperature and pressure increases and the materials are extruded out. With the sudden decrease of the pressure, the moisture evaporates rapidly and the materials expand and form the porous pellets.
Adopting expansion technology in the rice bran oil production line can increase extraction efficiency, reduce residual oil rate in the meal, increase the capacity of the oil extractor, reduce power consumption and improve the quality of the extracted rice bran oil.
5.Drying and Cooling
The expanded materials have high temperature and high moisture content and shall be dried and cooled to meet the requirement of the extraction process. Usually, chain dryer or pneumatic dryer is adopted in the rice bran oil processing plant for the drying and cooling of expanded rice bran.
Rice Bran Oil Solvent Extraction Workshop
rice bran→solvent extraction→wet meal desolventizing→evaporating and stripping→solvent recovery→crude extracted rice bran oil
The rice bran oil leaching workshop consists of solvent leaching system, wet meal desolvation system, mixed oil evaporated stripping system and solvent recovery system.
The conveying equipment transfers the puffed rice bran particles to a solvent extractor. Depending on the organic solvent extraction principle, through the spraying and soaking way to ensure good contact between the rice bran cake and solvent, the resulting mixed oil will be extracted and then forwards the evaporation and stripping system to vaporize the solvent and separate it from the oil to obtain crude rice bran oil.
we design negative pressure evaporation technology, innovative technologies are dedicated to saving energy and reusing materials, ensuring excellent quality of rice bran oil, helping to improve energy efficiency and heat recovery, and reducing steam consumption.
1.Solvent Extraction
The expanded rice bran enters the rotocel extractor or loop extractor in the rice bran oil extraction plant to extract the oil with a solvent. The drained wet meal is sent to the DTDC desolventizer by the wet meal scraper conveyor. The thick miscella is pumped into the miscella centrifugal separator and continuous miscella filter to remove the solid impurities, and finally pumped into the miscella holding tank.
2.Wet Meal Desolventizing
The solvent containing wet meal discharged from the oil extractor enters the DTDC desolventizer to separate the solvent from the meal. The wet meal first enters the predesolventizing layer of the desolventizer to remove part of the solvent heated by indirect steam. After that, the meal enters the desolventizing layer to remove the rest solvent distilled by direct steam. The desolventized meal contains a large amount of water and falls into the drying later to remove water. The dried meal enters the cooling layer to lower down the temperature and is then sent to the meal storehouse for packaging. The mixed vapor from the desolventizer in the rice bran oil plant enters the shell pass of first long tube evaporator as the heat source.
3.Evaporating and Stripping
The miscella from the miscella holding tank enters the first evaporator, the second evaporator and the disk stripping column in the rice ban oil plant to separate solvent and crude rice bran oil. The solvent vapor enters the condensing system. The crude oil enters the crude oil holding tank. The rice bran oil extraction plant adopts negative pressure evaporation technology, saving steam consumption and the extracted crude oil has good quality.
4.Solvent Recovery
The solvent vapor in the rice bran oil extraction plant enters the condensing system. The non-condensing vapor from the evaporating condenser and stripping condenser is pumped out by the steam jet pump and pumped into the shell pass of the first evaporator, resulting in the negative pressure of the evaporating system.
The condensate from the condensing system enters the water separator. The solvent separated enters the solvent holding tank for recycling use. The water separated enters the boiling tank to strip the residual solvent by direct steam.
The solvent-carrying air in the rice bran oil extraction plant enters the vent gas condenser. The vent gas from the vent gas condenser enters the mineral oil system in the rice bran oil plant. The unabsorbed vent gas is vented into the atmosphere.
Rice bran oil refining equipment process flow
Leached rice bran oil → degum drying section → dewaxing section → primary decolorization section → physical acid removal section → alkali refining section → secondary decolorization section → deodorization section → degreasing section → finished oil
The rice bran oil produced by leaching method will contain various impurities, such as cake meal powder, plant fibre, phospholipids, free fatty acids, pigments, water, solvents, etc. These impurities cause the oil to be highly susceptible to rancidity, and some of the oil will contain harmful elements and heavy metals, which will cause harm to human body after consumption.
Therefore, the crude oil must be refined by physical or chemical refining to remove impurities, solvents and harmful elements. Rice bran oil refining workshop has six main processes, water degumming process, physical deacidification and deodorization process, continuous dehydration process, bleaching and filtration process, crystallization and dewaxing process, finally, the most impurities and harmful substances are removed from the oil.
The continuous refining system is an innovative combination of different technologies that are designed to work in harmony with the rest of the production line and help improve the overall refining efficiency, ensure the quality and food safety of rice bran oil, and also prolong the storage time.
Rice bran protein process
Rice bran protein process:
In particular, rice bran has a not-negligible amount of lipids and nutrients, where the protein content in defatted rice bran can be as high as 18%. However, the first fate of rice bran is the feed formulation industry, losing the opportunity for the recovery of its potential. It is of great practical significance to recovery new protein resources from rice bran and improve the value of rice bran.
We has developed the rice bran protein extraction process since the earliest days of the industry, from rice bran separation, granulation and drying process, through solvent leaching, low temperature precipitation, protein separation, acid precipitation, curdling and so on, to effectively extract the rice bran protein to meet the dietary needs.
