Device for preparing ethanol through immobilized yeast fermentation

The utility model discloses a device for preparing ethanol through immobilized yeast fermentation. The device comprises a fermentation tank body, a vertical stirring device, an immobilized carrier anda circulating pipeline for feeding and discharging of the fermentation tank body, a plurality of feeding spray heads are annularly arranged on the side wall of the fermentation tank body and are usedfor feeding the fermentation tank body; a discharge hole is formed in the bottom of the fermentation tank body and is used for discharging of the fermentation tank body; a circulating pump is arranged between the discharge port and the feeding spray head, and the discharge port and the feeding spray head are connected through a circulating pipeline to form a circulating loop, so that materials inthe fermentation tank body enter the circulating pipeline through the discharge port and enter the fermentation tank body again through the feeding spray head to be circularly fermented under the driving of the circulating pump; a feeding pipe and a discharging pipe are further arranged on the circulating pipeline, and one-way valves are arranged on the feeding pipe and the discharging pipe respectively; a fermentation culture medium is guided into the circulating pipeline through the feeding pipe and enters the fermentation tank body through the feeding spray head; and a fermentation productpasses through the circulating pipeline and is discharged through the discharge pipe. 本实用新型公开了一种固定化酵母发酵制备乙醇的装置，包括发酵罐罐体、立式搅拌装置、固定化载体以及用于发酵罐罐体进料和出料的循环管道；发酵罐罐体的侧壁上环设有若干进料喷头，用于发酵罐罐体进料；发酵罐罐体底部设有出料口，用于发酵罐罐体出料；出料口与进料喷头之间设有循环泵，且通过循环管道连接形成循环回路，使得发酵罐罐体内的物料通过出料口进入循环管道，在循环泵的驱动下，通过进料喷头再次进入发酵罐罐体内循环发酵；循环管道上还设有进料管和排料管，进料管和排料管上分别设有单向阀；通过进料管将发酵培养基导入循环管道，并经进料喷头进入发酵罐罐体内；发酵产物经循环管道，通过排料管排出。