发明名称 |
Process of removing calcium and obtaining sulfate salts from an aqueous sugar solution |
摘要 |
The present invention provides a process for obtaining a product stream comprising one or more sulfate salts of potassium, sodium or ammonium from a sugar stream resulting from processing a lignocellulosic feedstock, said sugar stream which includes calcium sulfate and one or more of these sulfate salts. The process comprises (i) treating the sugar stream to remove calcium, thereby producing a sugar stream containing substantially no calcium, and obtaining a salt stream comprising a calcium salt; (ii) choosing a feed stream that is either (a) a clarified salt stream derived from the salt stream of step (i) after removal of calcium therefrom; or (b) the sugar stream containing substantially no calcium that is produced in step (i); (iii) introducing the feed stream chosen in step (ii) to an ion exchange bed; and (iv) regenerating the ion exchange resin bed of step (iii) with sulfuric acid to produce the product stream. |
申请公布号 |
US8273181(B2) |
申请公布日期 |
2012.09.25 |
申请号 |
US20080199976 |
申请日期 |
2008.08.28 |
申请人 |
FOODY BRIAN E.;TOLAN JEFFREY S.;IOGEN ENERGY CORPORATION |
发明人 |
FOODY BRIAN E.;TOLAN JEFFREY S. |
分类号 |
C13B20/00;C13B35/06;C13B10/04;C13B20/14 |
主分类号 |
C13B20/00 |
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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