An energy-saving process for producing fuel ethanol from starch-based raw materials
A fuel ethanol and starch-based technology, used in biofuels, fermentation and other directions, can solve the problems of low ethanol concentration, high steam consumption, large waste water and carbon emissions, etc. Effect
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Embodiment 1
[0032] refer to figure 1 An energy-saving process for producing fuel ethanol from a starch-based raw material comprises the following steps:
[0033] S1. Grinding: Corn is used as the starch-based raw material, and the corn is measured by a floor scale and unloaded into the corn hopper, lifted by a conveyor and bucket elevator, purified by magnetic separation, stone removal, impurity removal, and iron removal, and measured. Finally, it is sent to the pulverizer, which is pulled away by negative pressure and sent to the rolling sieve to obtain corn flour with a particle size of 1.8-2.5mm; the unqualified large-grained corn grits are returned to the crushing silo, and enter the crushing section for re-crushing;
[0034] S2. Pulping: Send 120t / h corn flour, 215t / h pulping water, α-amylase and remixed clear liquid to the screw conveyor, and the α-amylase is added twice at the inlet and outlet of the screw conveyor , after stirring, it is sent to the slurry tank for slurry treatme...
Embodiment 2
[0046] refer to figure 1 An energy-saving process for producing fuel ethanol from a starch-based raw material comprises the following steps:
[0047] S1. Crushing: sweet potatoes are used as starch-based raw materials, and the sweet potatoes are weighed by a floor scale and then unloaded into the sweet potato hopper, lifted by conveyors and bucket elevators, purified by magnetic separation, stone removal, impurity removal, iron removal and other processes, and measured Afterwards, it is sent to the pulverizer, which is pulled away by negative pressure and sent to the rolling sieve to obtain sweet potato powder with a particle size of 1.8-2.5mm; the unqualified large-grained sweet potato grits are returned to the crushing silo, and enter the crushing section for re-crushing;
[0048] S2. Pulping: Send 120t / h sweet potato powder, 215t / h mixing water, α-amylase and remixed clear liquid to the screw conveyor, and the α-amylase is added twice at the inlet and outlet of the screw co...
Embodiment 3
[0060] refer to figure 1 An energy-saving process for producing fuel ethanol from a starch-based raw material comprises the following steps:
[0061] S1. Crushing: Sorghum is used as the starch-based raw material. The sorghum is weighed by a floor scale and unloaded into the sorghum hopper. It is lifted by a conveyor and bucket elevator, purified by magnetic separation, stone removal, impurity removal, and iron removal. Afterwards, it is sent to the pulverizer, which is pulled away by negative pressure and sent to the rolling sieve to obtain sorghum flour with a particle size of 1.8-2.5mm; the unqualified large-grained sorghum grits are returned to the crushing silo, and enter the crushing section for re-crushing;
[0062] S2. Pulping: Send 120t / h sorghum flour, 215t / h pulping water, α-amylase and remixed liquid into the screw conveyor, and the α-amylase is added twice at the inlet and outlet of the screw conveyor , after stirring, it is sent to a slurry tank for slurry treat...
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