Pretreatment workshop of oil pretreatment machine:
A. Flow chart of oil pretreatment machine: peanut seeds→magnetic selection→softening&tempering→to expansion→drying&cooling
B. Quality index of crude peanut oil:
|
Item |
Quality index |
|
Smell & Taste |
peanut oil inherent original smell and taste,
no desirable odor |
|
Moisture&Volatiles (%) |
≤0.2 |
|
Insoluble Impurities (%) |
≤0.2 |
|
Acid Value(KOH) (mg/g) |
≤4.0 |
|
Peroxide Value(mmol/kg) |
≤7.5 |
|
Residue Solvent(mg/kg) |
≤100 |
C. Process description of peanut oil pretreatment machine:
1) Magnetic Selection of peanut oil pretreatment machine
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) Softening of peanut oil pretreatment machine
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.
3) Extrusion of peanut oil pretreatment machine
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.
4) Cooling of peanut oil pretreatment machine
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.
