Abstract:
The present invention provides an enzymolysis device, comprising: a flash column (1) comprising a first interface (5), a second interface (6), a third interface (7) and an outlet (11); a heat source (2) communicated with the third interface (7) of the flash 5 column (1) via a communicating vessel (8), the top of the communicating vessel (8) being higher than the liquid level of the material to be enzyme-digested in the flash column (1); an enzymolysis tank (3) communicated with the outlet of the flash column (1); a material source (10) communicated with the flash column (1) via the first interface (5); and a vacuum pump (4) communicated with the second interface (6) 10 of the flash column (1).
Abstract:
A method for producing ethanol from root and tuber crops comprises the following steps of: (a) removing skin of root and tuber crops by using a peeling device which comprises a pedestal, a roller rotatablely fitted on the pedestal and having a feed inlet and a material discharge hole, a spiral feeder located within the roller and fixedly connected with the inner wall of the roller, and a driving device, wherein raw material of root and tuber crops is fed into the roller via the feed inlet, and the driving device drives the roller and the spiral feeder to rotate together; (b) pulverizing the peeled material obtained in step (a); (c) mixing the pulverized material obtained in step (b) with enzyme, and subjecting the mixture to enzymolysis; and (d) fermenting the enzymolysis product obtained in step (c). The method can improve ethanol yield.
Abstract:
A method for recovering solid residue from waste liquor resulted from ethanol production through cassava fermentation, which comprises steps of removing water from waste liquor to give a filter cake having a water content less than 60wt% based on the total weight of the filter cake; and drying the filter cake to obtain a solid residue.
Abstract:
A device used to remove impurities from raw material is disclosed. The device comprises a conveying unit and an impurity removing unit. The conveying unit is used to convey raw material along a conveying line. The impurity removing unit is in a location where the raw material in the conveying line must pass and is used to remove the band-like light impurities from the raw material conveyed along the conveying line. As the device has an impurity removing unit installed in a location where the raw material in the conveying line must pass, the impurity removing unit may retain the impurities of the raw material containing soft and light impurities when the raw material is being conveyed along the conveying line, thereby playing a role of removing impurities. An ethanol preparation system and method are also disclosed.
Abstract:
A sand sedimentation tank (10) is provided, the tank (10) comprises a tank body (11), an inlet (12) and an outlet (13), wherein the tank body (11) comprises side walls (14) and a bottom (15), the outlet is arranged in a side wall (11), and the bottom (15) has at least one raised part (16) and/or at least one recessed part (17). A sand separator is further provided, the separator comprises a grading unit (30), a particle collector unit (40), and the sand sedimentation tank (10) connected in series. A method for separating mixture of solid particles is further provided. The solid particles comprise first solid particles and second solid particles, wherein, the density of the first solid particles is lower than the density of the second solid particles; the method comprises: forcing the mixture of solid particles to flow with a solvent, making the second solid particles deposit in the flow process to form a layer (22) of the second solid particles, and forcing the first solid particles to continue flowing with the solvent, wherein, the density of the second solid particles is higher than the density of the solvent.
Abstract:
The present invention provides a method for preparing ethanol from root and tuber crops, including the steps of mixing the pulverized crops with enzyme and performing enzymolysis in an enzymolysis device. The enzymolysis device comprises: a flash column; a heat source communicated with the flash column via the third interface; an enzymolysis tank communicated with the flash column via the outlet; a material source communicated with the flash column via the first interface; a vacuum pump communicated with the flash column via the second interface. Before, during or after delivering the pulverized crops into the flash column from the material source, negative pressure in the flash column is established by the vacuum pump to suck the heat medium in the heat source into the flash column to raise the temperature, and then the heated product is delivered to the enzymolysis tank to perform enzymolysis.
Abstract:
A method for producing ethanol from raw material containing cassava residues comprises the steps of: mixing raw material containing cassava residues with enzyme, and enzymolyzing the cellulose in the raw material to give enzymolysis product, wherein the mixing of the enzyme and the raw material comprises mixing the raw material and the enzyme in batches, the batch number is at least two, and each batch of the raw material is added at the amount of at most 60wt% of the total raw material; and fermenting the enzymolysis product. The inventive method can increase utilization rate of the raw material containing cassava residues, and has high ethanol yield.