Heat pump type concentration control method of vegetable protein extraction and sterilization technology feed liquid

Abstract

A heat pump type concentration control method of a vegetable protein extraction and sterilization technology feed liquid belongs to the technical field of vegetable protein production technologies and industrial energy saving. When the concentration of the feed liquid discharged from a flash evaporation tank is low due to the affection of the kind and the quality of protein powder in the extraction and sterilization technology of vegetable protein production, a heat pump type liquid feed concentration technology link is set to properly increase the concentration of the spray-dried feed liquid sent to downstream in order to increase the technologic productivity. The heat pump type liquid feed concentration technology link is characterized in that the feed liquid discharged from the flash evaporation tank is sent into a heat pump type negative pressure distillation device, a part of water is separated, and the concentrated feed liquid is sent into the high pressure nozzle of a drying tower, and undergoes spray drying, so the spray drying productivity is increased by 20-40%; and the separated water passes through a post-positioned treatment module, and is sent to a protein production extraction technology segment to realize recycling.

Description

technical field [0001] The invention relates to a heat pump type concentration control method for plant protein extraction and sterilizing process feed liquid, and belongs to the technical field of plant protein production technology and industrial energy saving. Background technique [0002] Plant protein production using soybean protein separation technology usually adopts the following process: extraction process: add water AA+material <1:9>——"separation—"add water BB<1:5>—"second extraction, separation—"milk +Separation of bean clear wastewater——“Add acid to milk for acid precipitation——”Separation into curd + bean clear wastewater (sampling water)——”Curd milk plus alkali neutralization——》Heat exchanger heating and sterilization (130~150 ℃)——"Flash evaporation, cooling (65~75°C)——"Spray drying——"Protein powder discharge. [0003] In the extraction and sterilization process of plant protein production, the raw material liquid is sterilized by steam to become ...

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Problems solved by technology

[0004] The purpose and task of the present invention is to aim at the problem that in the plant protein production process, due to the characteristics of some protein varieties, only a low raw material liquid concentration can be maintained, resulting in a low concentration of the flash tank effluent liquid and a low spray drying capacity. The problem is that after the flash tank, a heat pump feed liquid concentration process is added to concentrate the feed liquid to a higher feed liquid concentration allowed by the downstream spray drying process, so as to increase the process capacity.

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