Continuous solid-state separation device and process for producing fuel ethanol

A device for continuously separating fuel ethanol from solid-state fermentation materials, the device comprising:

• a housing (212),
• a screw conveyor for feeding (210) connecting with an inlet of the housing (212),
• a discharging bin (217) and a screw conveyor for discharging (218) connecting with an outlet of the housing (212),
• a rotation shaft (207) located on a center axis of the housing (212), and
• a driving motor (201) connecting with the rotation shaft (207),
• characterized in that:
• under the screw conveyor for feeding (210), on an inside wall of the housing (212) is provided a distributing plate grid (208);
• an inside of the housing (212) along the longitudinal direction has alcohol distillation components and drying components, wherein the drying components are located under the alcohol distillation components and connect with the alcohol distillation components, the alcohol distillation components are composed of a plurality of tower trays (214) connected in series with the rotation shaft, each of the plurality of tower trays (214) is a hollow body made up by two plates and a side wall, on an upper plate are uniformly distributed gaps of ϕ0.1-5 mm (or wire mesh sintering plate with a certain porosity) for steam passing through, and on each of the plurality of tower trays (214) are provided a tower tray rotary grid (213) and a tower tray fan-shaped hole (215);
• a steam inlet of the alcohol distillation components is located at the bottom of the alcohol distillation components, and a steam outlet is located at the top of the alcohol distillation components;
• the drying components are composed of a plurality of heating discs (214′) connected in series with the rotation shaft, wherein each of the plurality of heating discs (214′) is a hollow body made up by two plates and a side wall, and the chamber of the hollow body is provided with steam folding baffles (206), and is input with water vapor;
• the side wall of the heating disc (214′) is symmetrically provided with a steam inlet and a steam outlet;
• each of the plurality of heating discs (214′) is also provided with a heating disc rotary grid (213′) and a heating disc fan-shaped hole (215′);
• the steam inlets of the alcohol distillation components and the heating discs (214′) are respectively connected with a main line for steam inputting (216), and the steam outlet of the alcohol distillation components is connected with an upper steam outlet (211) at the top of the housing, so that the steam directly enters into a rectifying tower for rectifying;
• the steam outlet of the drying components are connected with a main line for steam outputting (205) under the housing, and a main line for steam outputting (205) at the end is provided with a gas-liquid separator (203), to separate steam and condensate.