500TPD Rice bran solvent extraction plant,rice bran oil mill for processing cooking oil

Henan Huatai Cereals And Oils Machinery Co., Ltd. is a manufacturing enterprise specialized in producing oil machinery in China and have become listed company in December, 2014. Established in 1988, Huatai covers an area of 100,000 square meters and has 180 senior engineering technicians. Our company has 280 sets of automatic processing equipment. Processing capacity of our enterprise is more than 3000 sets every year. Huatai has obtained independent export rights and has passed the evaluation of ISO9001:2000 Quality System Management Certification. We are the outstanding membership corporate of Chinese cereals and oils association, and they do quality quarantee for us. We have got 23 national patents (including 7 invention patents, 6 international medals, 2 national awards and 2 provincial prizes).

Our Factory

Our Processing Equipments

Main Equipments 

   500TPD Rice bran solvent extraction plant,rice bran oil mill for processing cooking oil

Our International Exhibitions

 Process description

1.       Pretreatment plant  

Process diagram 

1.1.     Soybean process diagram

1.2.  Process description for sunflower seed processing

1.2.1.         Measuring and cleaning 

The proposal of measuring is to control the capacity of the plant. Cleaning is very import for the

preparation. Larger materials may wedge between the internal components of the equipment

causing material build-up, which can cause corrosion and shorten the life of the equipment

and reduce its designed efficiency. More important, grain dust and material build-up presents a

hazard for fire. It may require screening to remove large materials, magnets to remove tramp

metals, an aspirator to remove the dust load associated with whole beans.

1.2.2.         Toothed roll crushing machine 

YBKG series toothed roll crushing machine works on the principle that the material flows into the upper and lower toothed rolls evenly through the feeding device. After the change of the speed ratio of each pair of toothed rolls and the adjustment of the spacing, can reduce the load of the toothed roll and the wear degree, increase the service life of the toothed rolls to achieve the best result.

Features of YBKG series toothed roll husking machine: compact structure, wide application range, good crushing rate and crushing effect, small powder degree, low power consumption, easy operation and convenient maintenance, long service life, is upgrading product of husking machine.

1.2.3  Soybean softening

Vertical softening tank is formed by stacking several layers,the structure of each layer is basically the same. There is side interlayer and bottom interlayer. Feeding steam into inter layers to heat and soften materials. There is a vertical axis at the center of softening conditioner passing through each layer, and two paddle type stirring wings on each layer are fixed on vertical shaft to stir the material layer. There is blanking hole on each layer where equipped with automatic material gate.The material height of each layer is controlled by controlling the blanking amount. At the same time,there is exhaust steam pipe on side wall on each layer, which is commonly connected with main exhaust steam pipe to discharge evaporated water vapor in the softening process,increasing soybean’s plasticity to provide conditions for soybean flaking.

1.2.4  Flaking

The soybean adopts paired roller hydraulic flaking machine, and thesoybeanl is pressed into flakes whose thickness is about 0.45-0.55 mm. In the process of flaking, the cell wall of the soybean is damaged under the action of squeezing and rubbing, releasing the oil which is contained in the cell and pressing it into thin slices to shorten the oil flowing path to take the oil out easily during pressing. However, the flakes is not thin as possible. If it is too thin, the powder degree of flakes will increase, and the residue content in  oil will be high.The rolls are made of nichrome alloy with long service life and low failure rate.

1.2.5   Soybean flakes drying

Adopt vertical box body,inside with multi-layer drying layers, feed direct steam in interlayer of drying layer to heat, the upper layer of drying plate adopts chain transmission, through multiple stirring to remove the moisture in soybean flakes.The machine has strong dehydration capacity, stable operation, safe and reliable, and can keep the integrity of soybean flakes. It is ideal drying equipment in soybean once extraction process. The machine has features of good sealing effect, low power consumption, energy saving and convenient maintenance.

1.3.  Process features 

n   Less conveyors,less elevator and screw conveyor. When process can reduce the failure  rate.  

n   Higher automatic control,

n   Dust removal system design is reasonable, the discharge air is in accordance with the

state environmental protection requirements.

n   Parts of the fans adopt variable frequency regulation, reduce the power consumption.

2.       Solvent extraction workshop 

2.1  Process diagram 

2.2  Process description 

2.2.1  Continuous extraction

Material enters the buffer bin on the extractor firstly,the buffer bin is equipped with automatic material level control system, use variable frequency feeding screw conveyor to feed materials into extractor quantitatively .The materials run a circle from feed inlet to outlet in extractor, and spray with miscella with descending concentration between inlet and outlet, before entering drain section, spray with fresh solvent again, at last the wet meal discharges from the bottom of extractor, enters wet meal scraper. Concentrated miscella is pumped to cyclone hydraulic separator by pump to remove meal powder, then enter the miscella tank to further remove the impuritie

2.2.2 DTDC desolventizing  DTDC

The wet meal discharged from the bottom of extractor is conveyed into upper part of the pre-desolventizing layer of DTDC with scraper, heating with indirect steam, make part of solvent evaporate, meal temperature rises; pre-desolventized meal falls into desolventizing layer, utilize secondary steam from desolventizing layer to remove the solvent from the meal, later meal falls into desolventizing layer, feed direct steam, the steam is injected into meal from small holes at  the bottom for steam distillation of solvent in meal,to remove the solvent,part of steam condenses in the meal, play a role in destroying active enzyme in the meal;the desolventized meal falls to the bottom of drying layer by discharge valve for drying,the dried meal is cooled in the cold air layer and then discharged by scraper and sent to the meal warehouse by the horizontal scraper. 

2.2.3  Evaporation, steam stripping

The miscella through the cyclone hydraulic separator go into the No. 1 evaporator, the DT vent can be used as the heating source of the NO. 1 evaporator. The evaporated solvent discharge into the evaporator condenser through the top of No. 1 evaporator separator, the vacuum of evaporator condenserkeep by the steam ejector. The concentrated miscella discharge from the No. 1 evaporator separator at the bottom, heated by the miscella heat exchanger and entered into the No. 2 evaporator. The No.2 evaporator use the indirect steam heating. The evaporated solvent gas go into the evaporation condenser with the solvent gas evaporated by the No.1 evaporator. The No.1 and No.2 evaporator are in the same vacuum. The second concentrated miscella flow out from the No.2 evaporator separator, pumped into the upper of oil stripper. The steam go into the oil stripper from bottom, remove the residue solvent in the miscella. The vents go into the stripper condenser,the vacuum in the oil stripping condenser maintained by high vacuum jet pump. At the bottom of the steam stripping tower, there is alevel control apparatus, which can guarantee the steady flow of the liquid seal and finished oil. The crude oil draw out by the stripper pump,after cooling, the crude oil pump into the oil storage tank.      

    2.2.4   Solvent cooling and water separation section 

Uncondensed vapor of the stripping condenser is pumped into the shell pass of No.1

evaporator by vacuum jet pump, uncondensed vapor of the evaporation condenser is pumped

into the shell pass of No.1 evaporator by vacuum jet pump, uncondensed vapor of shell pass

of No.1 evaporator enters the bottom of energy saver, heat exchange with fresh solvent, the vapor that has not been condensed enters the atmospheric condenser for further condensate. Condensate of evaporation condenser and steam-stripping condenser is pumped to water separation tank.The condensate of the first evaporator, the economizer shell condensate and other condensers flows into the water separator, and after the water is separated, the solvent enters the solvent turnover library.The fresh solvent pumped to the economizer to heat exchange and enter the extractor for recycling. The wastewater separated by the water separator enters the steaming water tank,after evaporated the residual solvent and discharged into the water sealing tank.

2.2.5  Tail gas absorption

Uncondensed vapor out from vent condenser enters from the bottom of absorber, lean

oil sprays down from the upside of the absorber, counter currently contact vent through packing

layer to absorb solvent, absorbed vent discharges into atmosphere by vent fan through flame

arrester from the top of absorber .

Rich oil which absorbs solvent is pumped into the heat exchanger between lean oil and rich oil, then heated by rich oil heater, and enters tower from the upside of desorber, inject direct steam from the bottom of oil stripper to desorber, desorpted gas enters evaporator condenser, lean oil enters absorber to recycle after heat exchanging and cooling.2.3  Process features 

n   Adopt loop extractor and big capacity recycle pump, with advantages of good permeation

effect and lower solvent rate in the meal, make sure the residual oil in meal not more than

1.0% under the circumstance of smaller material-solvent ratio. It can improve theconcentration

of the miscella, reduce the solvent in the meal,and reduced solvent evaporation greatly. 

n   Adopt negative pressure evaporation, reduce evaporation temperature, use DT vent from

DTDC and the steam from steam-jet pump to heat No. 1 evaporator,saved heating

steam of No. 1 evaporator. 

n   Use heat exchanger in paraffin recovery process, exchange heat between high temperature

    paraffin lean oil and low temperature paraffin rich oil, which saves part of heating. 

n   Adopt superior steam trap to reduce steam consumption in workshop, at the same time, collect all the steam condensate and pump into it to the boiler room for recycling, economize soft water and thermal energy.

Yes, we can. We have the experience to undertake big project. 

After delivering the equipments, we will offer you all the relevant documents, like manual book, equipments layout ,installation drawing and so on. And we will delegate engineers to customer’s place according to customer’s requests to help installing all of the equipments ,commissioning and debugging until the plant running smoothly. 

3.Can we visit the running oil factory?

Yes, we can find running factory for you to visit! Welcome for your coming!