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    Continuous method for obtaining a crystalline monosaccharide and device for continuous crystallization
    2.
    发明授权
    Continuous method for obtaining a crystalline monosaccharide and device for continuous crystallization 有权

    公开(公告)号：US11981968B2

    公开(公告)日：2024-05-14

    申请号：US17293097

    申请日：2019-11-27

    申请人： BMA BRAUNSCHWEIGISCHE MASCHINENBAUANSTALT AG

    发明人： Mirko Löhn ,  Holger Fersterra

    IPC分类号： C13B30/02 ,  C07H1/06 ,  C07H3/02 ,  C13B30/00 ,  C13B30/04

    CPC分类号： C13B30/022 ,  C07H1/06 ,  C07H3/02 ,  C13B30/002 ,  C13B30/04

    摘要： The invention relates to a continuous method for obtaining a crystalline monosaccharide, comprising: continuous crystallization of the monosaccharide in a main crystallizer (10), wherein crystallization by evaporation and/or crystallization by cooling is carried out continuously on a crystal suspension in the main crystallizer in order to allow crystals of the monosaccharide to grow in the crystal suspension; separation of crystals of the monosaccharide out of the crystal suspension to obtain crystalline monosaccharide; continuous formation of a mass of crystallization magma for the main crystallizer (10) in a cascade, wherein the cascade comprises at least one first stage (13) and a final stage (15) connected in series and each stage comprises at least one pre-crystallizer (13A, 15A), wherein, in the at least one pre-crystallizer (13A) of the first stage (13), a solution is seeded with monosaccharide by means of monosaccharide seed crystals in order to obtain a pre-crystallization magma, and a mass of crystallization magma for the downstream stage (14, 15) is formed from the pre-crystallization magma by means of crystallization by cooling and/or crystallization by evaporation, and wherein a solution containing monosaccharide and a mass of crystallization magma from the upstream stage is supplied to the at least one pre-crystallizer (15A, 15B, 15C) of the final stage (15) to obtain a pre-crystallization magma, and in the at least one pre-crystallizer (15A, 15B, 15C) of the final stage (15) a mass of crystallization magma for the main crystallizer (10) is formed from the pre-crystallisation magma by means of crystallization by cooling and/or crystallization by evaporation; the continuous supply of a solution containing the monosaccharide and a mass of crystallization magma from the at least one pre-crystallizer (15A, 15B, 15C) of the final stage (15) of the cascade to the main crystallizer (10) to provide the crystal suspension.

    CRYSTALLIZATION OF ALLULOSE UNDER REDUCED PRESSURE
    5.
    发明公开
    CRYSTALLIZATION OF ALLULOSE UNDER REDUCED PRESSURE 审中-公开

    公开(公告)号：US20230159579A1

    公开(公告)日：2023-05-25

    申请号：US17917888

    申请日：2021-05-26

    申请人： SAVANNA INGREDIENTS GMBH

    发明人： Timo Johannes KOCH ,  Stephan MOHR

    IPC分类号： C07H1/06 ,  C07H3/02

    CPC分类号： C07H1/06 ,  C07H3/02 ,  C30B7/04

    摘要： The invention relates to a process for the preparation of a solid allulose material comprising crystalline allulose, the method comprising the steps of (a) providing in an evaporating crystallizer an aqueous mother liquor containing dissolved allulose; (b) maintaining, preferably until the end of crystallization, the aqueous mother liquor within the evaporating crystallizer at a crystallization temperature within the range of from 20 to 80° C.; (c) maintaining, preferably until the end of crystallization, the vapor phase above the aqueous mother liquor within the evaporating crystallizer at a crystallization pressure within the range of from 40 to 500 mbar; and (d) inducing crystallization of allulose from the aqueous mother liquor at the crystallization temperature and at the crystallization pressure in a supersaturated state thereby obtaining the solid allulose material as a precipitate and a supernatant.