| 发明名称 |
METHOD FOR RECOVERING SULFURIC ACID FROM SULFUROUS BY-PRODUCTS OF A PROCESS FOR PREPARING 2-HYDROXY-4-METHYLTHIOBUTYRIC ACID (MHA) |
| 摘要 |
The invention relates to a method for recovering sulfuric acid from sulfurous by-products which arise in processes for preparing 2-hydroxy-4-methylthiobutyric acid (MRA), wherein the sulfuric acid accumulates in a grade in which it can be directly reused in such processes. For this purpose the combustion gas containing SO2 is passed through a sulfuric H2O2 solution in which the SO2 is oxidised to form sulfuric acid.
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| 申请公布号 |
CA2255483(A1) |
申请公布日期 |
1999.06.09 |
| 申请号 |
CA19982255483 |
申请日期 |
1998.12.08 |
| 申请人 |
DEGUSSA AKTIENGESELLSCHAFT |
发明人 |
HAEFNER, VOLKER;HEINZEL, HARALD;HUTHMACHER, KLAUS;HASSEBERG, HANS ALBRECHT;HASSELBACH, HANS JOACHIM |
| 分类号 |
B01D53/34;B01D53/50;B01D53/77;C01B17/58;C01B17/74;C07C319/20;C07C319/28;C07C323/52;C07C323/60;(IPC1-7):C01B17/90 |
主分类号 |
B01D53/34 |
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