公开(公告)号：US06375751B2

公开(公告)日：2002-04-23

申请号：US09377241

申请日：1999-08-19

申请人： Richard C. Reisig ,  Michael Donovan

发明人： Richard C. Reisig ,  Michael Donovan

IPC分类号： C13D316

CPC分类号： C13B10/00 ,  C13B20/00 ,  C13B20/165

摘要： The present invention relates to a process for producing sugar from cane that includes the steps of: (a) grinding sugar cane or pieces thereof into pulp; (b) mechanically separating juice from the pulp; and (c) membrane filtering the separated juice, for example through a ultrafiltration membrane, producing a retentate and a permeate. Preferably in step (a), the cane is cut into pieces having an average fiber length of less than 10 millimeters, more preferably into pieces having an average fiber length of less than 5 mm with a fiber diameter of about 200 microns or less. The mechanical separation of juice from cane pieces can be done suitably by filtration or centrifugation. It is preferred to adjust the pH of the separated juice to at least about 7 prior to membrane filtration, more preferably to at least about 7.5, for example by adding lime or sodium hydroxide. The permeate can be evaporated and crystallized by conventional means to produce white sugar. The mother liquor from this first crystallization can be crystallized further, usually twice more and the sugar obtained can either be used directly as a product, or remelted with the feed to the first crystallization. The remaining mother liquor is molasses.

摘要翻译： 本发明涉及一种从甘蔗生产糖的方法，包括以下步骤：（a）将甘蔗或其碎片研磨成纸浆; （b）将果汁与纸浆机械分离; 和（c）对分离的果汁进行膜过滤，例如通过超滤膜，产生渗余物和渗透物。 优选地，在步骤（a）中，将甘蔗切割成具有小于10毫米的平均纤维长度的片，更优选切割成平均纤维长度小于5mm，纤维直径为约200微米或更小的片。 通过过滤或离心可以适当地进行果汁与甘蔗片的机械分离。 优选在膜过滤之前将分离的果汁的pH调节至至少约7，更优选将至少约7.5调节至至少约7.5，例如通过加入石灰或氢氧化钠。 可以通过常规方法将渗透物蒸发并结晶以产生白糖。 来自该第一次结晶的母液可以进一步结晶，通常两次，所得到的糖可以直接用作产物，或者与进料重结晶进行第一次结晶。 剩下的母液是糖蜜。

公开(公告)号：US06406548B1

公开(公告)日：2002-06-18

申请号：US09618830

申请日：2000-07-18

申请人： Michael Donovan ,  Robert P. Jansen ,  Richard C. Reisig ,  Marc Hlavacek ,  Gordon Walker ,  John C. Williams

发明人： Michael Donovan ,  Robert P. Jansen ,  Richard C. Reisig ,  Marc Hlavacek ,  Gordon Walker ,  John C. Williams

IPC分类号： C13D316

CPC分类号： C13B10/00 ,  C13B20/00 ,  C13B20/165

摘要： A process for producing sugar from cane includes the step of filtering a sucrose-containing feed juice, which has been obtained from macerated sugar cane, through a first ultrafiltration membrane that has a first molecular weight cutoff. This ultrafiltration step produces a first ultrafiltration permeate and a first ultrafiltration retentate. The first ultrafiltration permeate is filtered through a second ultrafiltration membrane that has a second molecular weight cutoff that is lower than the first molecular weight cutoff. This second ultrafiltration step produces a second ultrafiltration permeate and a second ultrafiltration retentate. The second ultrafiltration permeate is nanofiltered through a nanofiltration membrane, thereby producing a nanofiltration permeate and a nanofiltration retentate. The nanofiltration retentate has a higher concentration of sucrose on a dry solids basis than the feed juice in step (a), and can be used in evaporation and crystallization operations to produce crystals of white sugar. The process can optionally include ion exchange and/or electrodialysis purification steps, prior to or after the nanofiltration step. Recycle syrups can be treated with a chromatographic separator to remove excess invert, ash and color.

摘要翻译： 从甘蔗生产糖的方法包括通过具有第一分子量截留值的第一超滤膜过滤从浸出的甘蔗获得的含蔗糖的进料汁的步骤。 该超滤步骤产生第一超滤渗透物和第一超滤滞留物。 第一超滤渗透物通过具有低于第一分子量截止值的第二分子量截止值的第二超滤膜过滤。 该第二超滤步骤产生第二超滤渗透物和第二超滤滞留物。 第二超滤渗透物通过纳滤膜进行纳滤，从而产生纳滤膜渗透物和纳滤膜渗余物。 纳米过滤滞留物在干固体基础上具有比步骤（a）中的进料汁更高的蔗糖浓度，并且可用于蒸发和结晶操作以产生白糖晶体。 该方法可任选地包括在纳滤过程之前或之后的离子交换和/或电渗析纯化步骤。 回收糖浆可以用色谱分离器处理，以去除多余的反转，灰分和颜色。

公开(公告)号：US06440222B1

公开(公告)日：2002-08-27

申请号：US09618831

申请日：2000-07-18

申请人： Michael Donovan ,  Robert P. Jansen ,  Richard C. Reisig ,  Marc Hlavacek ,  Gordon Walker ,  John C. Williams

发明人： Michael Donovan ,  Robert P. Jansen ,  Richard C. Reisig ,  Marc Hlavacek ,  Gordon Walker ,  John C. Williams

IPC分类号： C13D108

CPC分类号： B01D61/142 ,  B01D61/16 ,  B01D2311/04 ,  C13B10/00 ,  C13B20/00 ,  C13B20/165 ,  B01D2311/103 ,  B01D2311/246 ,  B01D2311/2623 ,  B01D2311/268

摘要： A process for producing sugar from beets includes the step of filtering a sucrose-containing feed juice, which has been obtained from macerated sugar beets, through a first ultrafiltration membrane that has a first molecular weight cutoff. This ultrafiltration step produces a first ultrafiltration permeate and a first ultrafiltration retentate. The first ultrafiltration permeate is filtered through a second ultrafiltration membrane that has a second molecular weight cutoff that is lower than the first molecular weight cutoff. This second ultrafiltration step produces a second ultrafiltration permeate and a second ultrafiltration retentate. The second ultrafiltration permeate is nanofiltered through a nanofiltration membrane, thereby producing a nanofiltration permeate and a nanofiltration retentate. The nanofiltration retentate has a higher concentration of sucrose on a dry solids basis than the feed juice in step (a), and can be used in evaporation and crystallization operations to produce crystals of white sugar. The process can optionally include ion exchange and/or electrodialysis purification steps, prior to or after the nanofiltration step. Recycle syrups can be treated with enzyme or a chromatographic separator to remove raffinose.

摘要翻译： 从甜菜制备糖的方法包括通过具有第一分子量截留值的第一超滤膜过滤从浸出的甜菜获得的含蔗糖的进料汁的步骤。 该超滤步骤产生第一超滤渗透物和第一超滤滞留物。 第一超滤渗透物通过具有低于第一分子量截止值的第二分子量截止值的第二超滤膜过滤。 该第二超滤步骤产生第二超滤渗透物和第二超滤滞留物。 第二超滤渗透物通过纳滤膜进行纳滤，从而产生纳滤膜渗透物和纳滤膜渗余物。 纳米过滤滞留物在干固体基础上具有比步骤（a）中的进料汁更高的蔗糖浓度，并且可用于蒸发和结晶操作以产生白糖晶体。 该方法可任选地包括在纳滤过程之前或之后的离子交换和/或电渗析纯化步骤。 可以用酶或色谱分离器处理回收糖浆以除去棉子糖。

公开(公告)号：US06387186B1

公开(公告)日：2002-05-14

申请号：US09376026

申请日：1999-08-19

申请人： Richard C. Reisig ,  Jatal D. Mannapperuma

发明人： Richard C. Reisig ,  Jatal D. Mannapperuma

IPC分类号： C13D100

CPC分类号： C13B10/00 ,  C13B20/00 ,  C13B20/165

摘要： The present invention relates to a process for producing sugar from beets, comprising the steps of: (a) macerating beets or pieces thereof; (b) mechanically separating juice from the macerated beets; and (c) membrane filtering the separated juice, producing a retentate and a permeate. The mechanical extraction of juice can be done on a moving porous vacuum filtration belt with countercurrent flow of macerated beets and water. The pH of the vacuum extracted juice can be adjusted to at least about 7 by addition of sodium hydroxide. This process does not use conventional beet diffusion. No lime and no carbon dioxide are required to be contacted with the juice or the permeate in this process.

摘要翻译： 本发明涉及一种从甜菜制备糖的方法，包括以下步骤：（a）浸渍甜菜或其片; （b）从浸渍的甜菜中机械分离果汁; 和（c）对分离的果汁进行膜过滤，产生滞留物和渗透物。 果汁的机械提取可以在移动的多孔真空过滤带上进行，该过滤带与浸入式甜菜和水的逆流流动。 通过加入氢氧化钠可将真空提取的果汁的pH调节至至少约7。 该方法不使用常规的甜菜扩散。 在此过程中，不需要石灰和二氧化碳与果汁或渗透液接触。