BV&CE proved 50-1000TPD groundnut oil solvent extraction machine

The pre-pressed cake or flake, firstly enter into the sealed scraper blade to avoid

the solvent gas escaping because of the section without screw blade in the sealed auger.

Material seeds enter into the bo-chained loop type etractor counter-currenting with

the solvent, the grease is etracted.

Miscella condnesity increase from 2% to more than 25%.

Miscella discharged from etractor and into miscella filter, then the leached meal

in the miscella tank enter into evaporation system through the first evaporation

feed pump and finally drop-in DTDC out from wet meal drag conveyor.

*Evaporation process

Using the secondary steam desolventized from DTC desolventizer and produced by

steam-jet pump to heat and evaporate micella in the first long-tube evaporator.

Eport temperature reaches to 58-62c and condensity reaches to more than 65%.

Then, micella enters into the second long-tube evaporator in which the temperature

is heated to 105-110c by indirect steam and the condensity reaches to more than 95%.

Then miscella enters into stripper in which residual solvent in oil will be removed,

the eport temperature reaches to about 105c and the general volatile of the

etracted crude oil is less than 0.30%.

*Desolventizing process

Wet meals discharged from the bottom of etractor enter the top of DTDC and

land on the predesolventizing trayers where thery are heated by the indirect steam,

thus, some solvent in meal is evaporated and meal temperature is risen.

Predesolventized meals land on predesolventizing trayers where they use the second

steam in desolventizing trayers to predesolventize solvent from meal, then meals enter

desolventizing layers in which direct steam is injected.

Direct steam is sprayed into the meals through the bottom holes, and distill the

solvent from meal by using steam in order to remove all solvent.

Desolventized meals land on the following drying and cooling layer to dry and cool meals,

cooled meals land on meal scraper blade from automatic material controlling gate on the

bottom of cooling layer, and then they are entered into meal storehouse.

*Condensation recovery process

Etractor is equipped with a separate condenser, first and second evaporation share

one condenser. Low and high temperature of solvent gas both from first and second

evaporation enter into the condenser after its neutralization, which greatly reduces

the load of condenser and improves the efficiency of condensing.

Stripping and analyzing share one condenser, the non-condensable gases from etractor

and other condensers enter into the vent gas recovery system through the final condenser.

In the recycling system, the cold paraffin will absorb the solvent gas and the final

nonsolvent gas will be discharged through fire resistance valve.

Paraffin absorbed the solvent gas can be also called rich oil, after heating by oil-oil heat

echanger and steam, the rich oil will enter into desorber for desorption,

and into condenser after changing solvent into gas,

the final cooled paraffin can be recycled.

* Absorbing the world's leading core etraction technology, design and develop

a process which is efficient, economical and reliable. Adopting bo-chained loop

type etractor can effectively achieve low residual oil, low solvent consumption

and low failure rate of equipment.

* Full automatic computer control system is adopted in etracting process,

adjust automatically and operate stably.

* Negative pressure technology is adopted in condensate system.

* Stainless steel heat echange tubes and multistage baffling make the condenser

have a high heat transfer effciency, also the water consumption is low.