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DDGS System

Wort sludge is pumped by the feeding pump into the evaporated alcohol storage tank and then it enters DDGS system.
The wort sludge is separated by the horizontal separator or the frame press, achieving residue and clear liquid. The clear liquid will be pumped into the evaporation system while the residue is transferred by the screw conveyor to the drying system.
The partial separated liquid is pumped into the liquid-gas separating room of evaporator II. The secondary steam from the dryer enters evaporator I, starting heat exchange co-currently with the clear liquid. The auxiliary evaporator is not directly heated by the steam. The route of steam is as follows: the secondary steam generated by the auxiliary evaporator provides heat to the evaporator I; the secondary steam generated by the evaporator I provides heat to the evaporator II; the secondary steam generated by the evaporator II provides heat to the evaporator III; the secondary steam generated by the evaporator III enters the membrane tower, making direct contact with circulating water against the current for condensation. The circulating water then enters the cooling water tower to get cooled down prior to being pumped into the membrane tower for circulation. The steam failing to become condensate will be extracted by vacuum pump. The route of clear liquid starts from evaporator II, then to evaporator III and ends in auxiliary evaporator. The dense liquor meeting the requirement of quality enters the drying system by the circulating pump I.
The standard DDGS high-protein feed is discharged by the conveyor and transferred through the HP blower pipeline to the cyclone and then the de-duster and closed-air aspirator prior to being packaged and stored.

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