摘要 |
The present invention provides a process for recovering a tungsten compound from a waste liquor containing a high-boiling organic compound and the tungsten compound, which process comprises the steps of spray-burning said waste liquor at an air ratio of 1.05 or higher under conditions of a temperature and a residence time which lie within the region of a pentagon defined by points A, B, C, D, and E in FIG. 1; quenching the combustion product by immediately bringing it into direct contact with water; and recovering the tungsten compound.
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申请人 |
DAICEL CHEMICAL INDUSTRIES, LTD. |
发明人 |
IMAGIRE, YOSHIYUKI;HIRABAYASHI, TERUHIKO;NONAKA, NOBUO;KITAGAWA, TOSHIFUMI;MURAKAMI, YASUKAZU;ABE, IWAO;UDA, SHINZO;OHSHIMA, OSAMU;TAKEMOTO, ETSUO |