Vinasse filtrate evaporation and concentration system for vinasse protein production feed

Abstract

The invention provides a vinasse filtrate evaporation and concentration system for producing feed by vinasse protein, and the system comprises a first-effect evaporator, a second-effect evaporator and a third-effect evaporator; the first-effect evaporator is used for carrying out first-time evaporation and concentration on the vinasse filtrate by utilizing waste gas of a filter residue tube bundle dryer; a heater B of the triple-effect evaporator is used for carrying out second-time evaporation and concentration on the vinasse filtration liquid by utilizing steam separated by the double-effect evaporator, and a heater A of the triple-effect evaporator is used for carrying out third-time evaporation and concentration on the vinasse filtration liquid by utilizing waste gas flowing out of a heater A of the double-effect evaporator; a heater B of the second-effect evaporator is used for carrying out fourth-time evaporation and concentration on the vinasse filtration liquid by utilizing steam separated by the first-effect evaporator; and a heater A of the second-effect evaporator is used for carrying out fifth-time evaporation and concentration on the vinasse filtration liquid by utilizing waste gas flowing out of the first-effect evaporator. High-temperature waste gas generated by filter residues in the drying process of the tube bundle drying machine is used as a heat source, filtrate is evaporated and concentrated, steam does not need to be generated, energy consumption is reduced, and the production cost is reduced.

Description

technical field [0001] The invention relates to the technical field of distiller's grain protein feed production equipment, in particular to a distiller's grain filtrate evaporation and concentration system for producing distiller's grain protein feed by using the waste gas generated when the distiller's grain liquid filter residue is dried in a tube bundle to evaporate and concentrate the distiller's grain filtrate. Background technique [0002] In the process of alcohol production, after the alcohol is distilled from the fermented mash, the distiller's grains rich in protein will be left, and the distiller's grains will be separated into two parts, the filter residue and the filtrate after solid-liquid separation. Finally, it can be used to produce whole distiller's grain dried feed, and the filtrate is also sent to the dryer for drying after being evaporated and concentrated, and the dried product can also be used to produce whole distiller's grain dried feed. At present,...

AI Technical Summary

Problems solved by technology

At present, tube bundle dryers are usually used to dry the filter residues. The tube bundle dryers use high-temperature steam as the heat source. In this process, the filter residue will produce a large amount of high-temperature waste gas during the drying process. At present, the treatment of high-temperature waste gas is usually directly discharged after washing. The heat loss in the high-temperature waste gas causes a large amount of Energy waste

[0003] The filtrate separated from distiller's grains will still contain a large amount of protein, and direct discharge will not only pollute the environment, but also cause the loss of nutrients. For this reason, those skilled in the art usually evaporate and concentrate the filtrate to recover the nutrients in the filtrate. Evaporating and concentrating the filtrate inevitably requires heat. At present, most distiller's grain protein feed manufacturers use raw steam to evaporate and concentrate the filtrate, which consumes a lot of energy and produces high production costs.

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