20-2000T/D Solvent Extraction Plant of Rice Bran Oil

Introduction of Rice Oil Making Craft in Detail

Rice Bran Pretreatment Workshop

1. Rice Bran Oil Making Machine Process flow:

Rice Bran→Cleaning→Rice Bran Separation→Softening&Tempering→To Expansion→Drying & Cooling;

2.Main Equipment Introduction of Rice Bran Oil Making Machine :

1) Magnetic Selection: Cylinder Magnetic Selector is mainly composed of the shell, rotary door, and magnetic core. The magnetic core consists of shunt umbrella hat, magnetic ring and magnetic core cylinder. The materials will fall down from the upper flange mouth, homodisperse fall through a shunt umbrella hat, during this process the mixing iron impurity will be quickly attracted by the magnetic ring, thus separated with the oil material. The Cylinder magnetic selector has the advantages of running  without electric power, saving energ, and ease-maintenance.

2) Bran&Chaff Separation: The Bran&Chaff Separation is mainly achieve by Chaff &Bran Separation Sieve. For the rice bran is mixed with broken rice, fine broken rice, and sometimes even the integrity  rice mixed in for the sieve damage or poor assembly reasons. So if they were not separated out, it will  accelerate the abrasion of the extruder. What's more, the broken rice contains many starch, this will

    lead the problem of the failure of pressure formation. This separation sieve has four layers screens, this

    is equivalent to two screens yield, with the characteristics of large output, good separation effects.

3.Raw Material Requirements& Technical Economic Index

   3.1 Raw Rice Bran Requirements:

           Rice Bran Moisture: ≤13%;

        Rice Bran Oil Content(Dry Basis): 22-23%;

        Rice Bran Contained Oil Acid Value: ≤13;

        Rice Bran Impurity Content: ≤1%;

        Rice Bran Fine Broken Rice Content: ≤8%;

        Unit Weight: 320 kg/m3;

  3.2 Puffing/Extruding Material Index:

          Puffing/Extruding Material Temperature: 100-110℃;

         Puffing/Extruding Material Moisture: Higher 1-1.5% than before Puffed/Extruded;

         Puffing/Extruding Cold Material: ≤8%;

         Unit Weight: 400-450 kg/m3;

  3.3 Main Economic Index Requirements:

        Power Consumption: ≤27 kwh/t Rice Bran

        Steam Consumption: ≤180kg/t Rice Bran (Material Temperature:20℃,Saturated steam gage

         pressure:0.8-1.0Mpa).

Bran-Tips Separation Sieve Picture

3)   Softening: The Vertical Softening Pot consists of several layers of super-posited pots, each layer of

       the pot structure of is basically the same. They all have the edge and bottom laminated sandwich,the

       steam enters through the sandwiches to heat and soft the material. There has a vertical axis through

        the center of each layer of the softening pot, and each layer of the pot has two paddle stirring wings,

        which are fixed on the vertical axis, the paddle stirring wing stirs the materials. And each layer of the

        pot has bed opening and each bed opening has an automatic flow controlling gate, through controlling

        the blanking quantity reach the goal of controlling the height of the material height. Meanwhile, each

        layer of the sidewall of the pot body has the exhaust pipe, the exhaust pipes are connected to the

        exhaust collector, thus to drain the evaporating steam in the process of softening.

Softening & Conditioning Pot Picture

4)   Extrusion/Puffing: The tempered rice bran will be extruded by the extruder in order to strengthen the

      extrusion effect. The oil material will be extruded, kneaded, sheared, pressurized, and under the

      effected of a series of wetted the gushed steam and friction functions, the oil material's cell has been

      completely destoried, the oil will be fully exposed. At the end of the extrusion screw, the material

      pressure and temperature is very high, the high pressure and temperature material get out of the

      hydraulic die head will expand and the moisture of the material will evaporate quickly for the sudden

      release of the pressure, then we can get the loose, porous and high strength extrusion materials.

Extruder/Expansion Machine Picture

5) Cooling: The extruded material will go into the plate dryer, through the adjustment of the plate dryer, the material can reach the best moisture and the optimum temperature to extraction.

Plate Dryer Picture

Crude Rice Bran Oil Extraction Plant (Rice Bran Oil Making Machine)

1.Main Consumption Index:

  1.1 Extraction Process Procedure:

  The puffed/extruded rice bran will be sent to the extractor by the scraper conveyor, the puffed/extruded rice bran will run a circle from the material inlet port to the discharging outlet, and the puffed/extracted will be sprayed by the feed by decreasing concentraction mixed oil at the the material inlet and discharging port, The sprayed puffing/extruding rice bran will be sprayed again by the fresh solvent before it was drained, the drained off wet meal will be discharged by the discharging cell kick-out device of the extractor and sent to the wet meal scraper. The strong mixed oil will go to the two-stage cyclone separator to remove the the powder impurity and then go into the mixed oil tank by the strong mixed oil pump.

2. Process flow:

                                         Extracted Light Petrol          Solvent Recovery

                                                         ↓                                          ↑

Puffing/Extruded Material→Oil Extraction→Mixed Oil Processing→Extracted Crude Oil

                                                                                              ↓

                                         Solvent Recovery←Wet Meal De-solventizing→Product Meal

3. Raw Material Requirements& Technical Economic Index:

     3.1 Main Consumption Index:

             3.1.1Power Consumption:≤ 23 Kwh/t Material;

             3.1.2Steam Consumption:≤280Kg/t(Environment Temperature:20℃, 1Mpa Saturated Steam);

            3.1.3 Solvent Consumption: ≤3.5 Kg/t(Plant Oil Extracted Solvent(GB16629-2008));

            3.1.4 Circulating Water:≤ 320 Kg/ton Material;

4. Product Quality Index:

   4.1 Rice Bran Meal:

   4.2 Residual Oil: ≤ 1.0% (Extracted Method);

   4.3 Moisture: 12-13%(Adjustable);

   4.4 Residual Solvent: ≤350PPM;

   4.5 Extracted Crude Oil:

   4.6 Total Volatile Matter: ≤0.2%;

   4.7 Residual Solvent: ≤100PPM;

Rotecel Extractor Picture

2. De-solventizing Process Procedure:

  The solvent wet meal will be sent to the DTC de-solventizer pre-desloventing layer by the air lock, the bottom part will be heated by the indirect steam to removing part of the solvent; the pre-deslovented wet meal will go into the de-solventizing layer, the de-solventizing layer set self-control thus to keep a certain material layer, the bottom of the material will be passed through the direct steam to remove all the solvent. At the same time, part of the steam will condensate in the meal, the moisture of the meal will increase partially. The de-solventing meal will fall into the drying layer by the rotary valve de-watering after the wet meal into the evaporation layer, evaporation layer set automatic control to maintain a certain material layer, the bottom into the direct steam remove all at the same time, solvent, part of the steam condensation in the meal, meal moisture will increase. Agglomeration by rotary valve quantitative fall into the drying layer, the drying layer hold a certain material level, thus to continue the water removing process, and then the material will be cooled at the cooling layer. Finally the material discharging will be controlled by the automatic self-control door, and the discharging material will be sent to the meal library by meal scraper.

Desolventizer-Toaster/DTDC Desolventizer Picture

3. Evaporation Section:

  The mixed oil will go into the first long tube evaporation tube from the mixed oil tank. The evaporation solvent will go into the evaporative condenser by the separation chamber. The separation chamber outlet pipeline has the liquid level control device thus can keep the liquid seal. Meanwhile, the secondary steam evaporating heating has equipped with the control valve unit so that can control the mixed oil temperature.

  The mixed oil will go into the first long tube evaporation tube from the mixed oil tank. The evaporation solvent will go into the evaporative condenser by the separation chamber. The separation chamber outlet pipeline has the liquid level control device thus can keep the liquid seal. Meanwhile, the secondary steam evaporating heating has equipped with the control valve unit so that can control the mixed oil temperature.

4.Solvent Condensation&Water Distribution Section:

  The condensate will be collected and pumped into the water distribution tank by the condensate recovery pump. The non condensate gas from the final condenser will be sucked into the paraffin recovery device by the tail gas blower.

  The solvent phase will flow into the solvent library for partially recycle. The water phase will pump into the steam cook. The residual solvent will be evaporated by the direct steam from the bottom of the steam tank and then pumped into the water seal pool.

Solvent Condensation & Water Distribution Part Machine Picture

5. Extraction Process Technology Advantages:

   5.1The mixed oil adopts two-stage impurity removal treatment. The strong mixed oil will firstly go into

         the first cyclone separator to remove the bigger meal powder, and then go into the second cyclone

         separator to continue the secondary impurity removal. The mixed oil Basic does not contain solid

          impurities separated by the cyclone separator, the relative clean mixed oil which has been

          separated by the cyclone separator will be pumped into the mixed oil temporary storage tank for

          further sediment, the sediment in the bottom of the mixed oil tank will be pumped into the extractor

          by the slag pump;

  5.2 The secondary steam of the condensate water tank will be used for the waste water pre-heating thus

        to reduce steam consumption;

 5.3 Collecting all steam of the extraction plant and pumping into the boiler room for secondary use, the

       spent water exhaust heat can be used effectively thus to save plant production water.

Rice Bran Oil Refinery & Dewaxing Plant

1.  Process Flow:

                         Phosphoric Acid Alkali Liquid         Hot Water     Vacuum System

                                         ↓                                                ↓               ↑

Filter Crude Oil→Hydration degumming Alkali Liquid→Washing→Drying→Decoloring→

                                                                                                           ↑                 ↓

                                                                                                        Clay         Waste Clay

                Vacuum System              Fat Paste

                          ↑                                  ↑

Filter→Deacidification→Cooling →Degreasing → Filter

                                         ↑                       ↓

                     Refrigeration System      Product Oil

2.Refinery Requirements& Technical Economic Index:

   2.1. Main Consumption Index:

          2.1.1 Power Consumption:≤ 55.68Kwh/t Oil;

           2.1.2 Steam Consumption:≤380Kg/t Oil;

           2.1.3 Process Water Consumption: ≤0.25 t/t Oil;

  2.2 Auxiliary Material Consumption:

        2.2.1 Food Grade Phosphoric Acid (85%): 1.5Kg/t Oil;

        2.2.2 Caustic Soda Consumption:3Kg/t Oil (If the Crude Rice Bran Oil’s acid value is 3-4.0, the

                 crude oil can be refined with NaOH; If the Crude Rice Bran Oil’s acid value is above 4.0, the

                 crude oil shall be Physical de-acidification at first, when the acid value decrease to 3-4.0, the

                crude oil can be refined with NaOH);

      2.2.3 Active Carbon Consumption: 8-10Kg/t Oil; (In necessity);

      2.2.4 Citric Acid Consumption: 0.2Kg/t Oil.

2.3 Refinery Consumption:

      2.3.1 NaOH Consumption in Neutralizing Caustic Refining:1.5*FFA+0.2%(Washing);

      2.3.2 Clay Slag Residual Oil(Decoloring Section): ≤25%;

      2.3.3 Deodorization Spill Content(Deodorization Section): 0.2%;

      2.3.4 Crystallinity Coefficient(Dewaxing&Degreasing Section): Solid Lipid Content(%)*2.5

3. Refinery Section Technology Process Introduction:

    Hydration Degumming, Alkali Refining Technology:

   Take advantage of hydrophilia of the phospholipid and peptizatized impurities of rice bran oil, by adding proper amount of hot water and control other related conditions, when the hydrosol cohesion, sediment, separation in which water sol coagulation, settlement, separation, degumming finished, mix the matched well alkali liquid to the oil to remove the FFA so that it can reach the national standard, the soap-stock produced in this process will be recoveried.

Hydration Degumming, Alkali Refinery Part Machine Picture

  3.1 Decoloration Technology:

       Adding high-efficiency activated clay to the oil, heating under vacuum condition to heat adequately, so that the pigment solid tiny particles suspended in the oil can be adsorbed on the clay grains, then being filtered by the blade filter. This system has perfect arrangement, reliable performance, high configuration main equipment -- decolorizer and leaf filter, thus can guarantee the high quality of the Oil's decoloration and separation.

    This Technology has the advantages of the following:

    1) In the process of decoloring. the clay and oil will be mixed under vacuum circumstances, this avoids

       the effect of air, thus the clay has higher using rate and better decolorization. At the same

       decolorization effect, the clay consumption will be lower;

    2) Auto-weighing the clay addition ratio accurately according decoloring needs, accurate, automatic  

       metering;

   3) The mixing process makes all clay particles can be contacted with oil;

   4) The temporary storage tank of decoloring adopts negative pressure, this can avoid the oil and air

       contact effectively, so that the quality of the intermediate products and terminal products more stable;

   5) The decolored oil will be filtered in aright-right stainless steel filter filter, the residual oil of the meal is

        low, the operation is easy and the equipment's failure rate is also low.

Bleaching/Decolorization Part Machine Picture

3.2 Deodorization

         The process of rice bran oil's deodorization is the combination of flash and delay, which is the result

    of our company's new rice bran oil refining development technology through many years practice and

    research for many years in the field of rice bran oil refining. The processing of this technology goes like

    this: The qualified decolored oil will be heated to the deodorization temperature by pot,Through the high

   vacuum internal, the oil will recycle fully in the pot, thus to achieve the purpose of deodorization.

Deodorization Part Machine Picture

  3.3 Dewaxing & Winterization Section:

    Dewaxing is an important segment of improving edible oil quality . The existence of wax is mainly it can affect the oil's palatability, so the main purpose of dewaxing is to improve the palatability of oil, grease and improve the oil's sensory properties such as transparency and brightness.Different oil's wax content is different, the rice bran oil's de-waxing is essential. Due to the different oil's crystalline nature is different, the crystallization rate, temperature, crystal growing time and filtering method also has bigger difference.

Dewaxing & Winterization Part Machine Picture 

4. Winterization De-waxing technology has the following characteristics:

    4.1 This process adopts vertical crystal maturing tank, it occupies small area and consumes little power;

    4.2 Filtration adopts plate and frame filter, the waxiness strength is high, high strength, thickness is

         uniform, equipment cost is low;

    4.3 The refrigerator is automatic temperature control, thus to ensure the crystallization temperature

         uniformity;

    4.4 The heat ex-change of product oil and crystallization oil, saving energy consumption.

Crude Rice Bran Oil National Standard Quality Index

(GB19112-2003)

Remarks: Indexes in red are Mandatory.  

Pressed &Extracted Rice Bran Oil Quality Indexes

After-selling Service Terms

1.Payment terms: 30%T/T deposit in advance, the balance 70% shall be paid before delivery;

2.Package: The whole machine will be packed in Containers;

3.Delivery time: 40-60 working Days since the date of receiving deposit;

4.Installation&after- selling service: we will appoint 2-3 engineers to your(the buyer) country to conduct

    the installation. It contain the installation, commissioning and debugging until the machine

    running smoothly. Our engineers will also free training your workers to operate the machine;

5.Buyer should pay all the visa charge, round-trip air ticket charge, board and loading, and salary

   USD100.00 per engineer per day;

6. Warranty period: one year. In the warranty period, all because of the quality of products has caused

    the damage or failure of equipment, suppliers will take the responsibility for the free repair and

     replacing spare part. After this period, also will offer support to our customer, such as technology

     conduct, consult and repair service and so on.

  How to Reach Us

On behalf of all staff of my factory, we warmly welcome all of you come to visit our factory for business discussion and hoping we can have a pleasant cooperation! Yours Echo will be always under your service!