发明名称 |
Sugar beet membrane filtration process |
摘要 |
<p>The present invention relates to a process for producing sugar from beets, comprising the steps of:
(e) slicing sugar beets into cossettes and obtaining a sucrose-containing feed juice therefrom by diffusion, wherein the feed juice also comprises ash and invert sugars;
(f) filtering the sucrose-containing feed juice through a first ultrafiltration membrane that has a first molecular weight cutoff of at least about 2,000 daltons and a pore size no greater than about 0.1 microns, thereby producing a first ultrafiltration permeate and a first ultrafiltration retentate;
(g) filtering the first ultrafiltration permeate through a second ultrafiltration membrane that has a second molecular weight cutoff that is lower than the first molecular weight cutoff and is between about 500-5,000 daltons; thereby producing a second ultrafiltration permeate and a second ultrafiltration retentate; and
(h) filtering the second ultrafiltration permeate through a nanofiltration membrane; thereby producing a nanofiltration permeate and a nanofiltration retentate, wherein the nanofiltration retentate has a higher concentration of sucrose on a dry solids basis than the feed juice in step (c), and wherein the nanofiltration permeate comprises at least about 30% of the ash and at least about 30% by weight of the invert sugars present in the second ultrafiltration permeate.</p> |
申请公布号 |
CZ20020570(A3) |
申请公布日期 |
2002.11.13 |
申请号 |
CZ20020000570 |
申请日期 |
2000.08.15 |
申请人 |
TATE & LYLE SUGAR HOLDINGS, INC.;TATE & LYLE INDUSTRIES, LIMITED |
发明人 |
REISIG RICHARD C.;MANNAPPERUMA JATAL D.;DONOVAN MICHAEL;JANSEN ROBERT P.;HLAVACEK MARC;WALKER GORDON;WILLIAMS JOHN C. |
分类号 |
C13B10/00;C13B20/00;C13B20/14;C13B20/16;(IPC1-7):C13D1/00;C13D3/00;C13D3/16 |
主分类号 |
C13B10/00 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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