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2. 发明申请

WO2005113430A1 CONCURRENT SULFUR DIOXIDE OXIDATION PROCESS AND ITS USE IN MANUFACTURE OF TETRABROMOPHTHALIC ANHYDRIDE 审中-公开
标题翻译：当前的二氧化硫氧化过程及其在制备四氢呋喃非离子水中的应用
公开(公告)号：WO2005113430A1
公开(公告)日：2005-12-01
申请号：PCT/US2004/012861
申请日：2004-04-27
申请人： ALBEMARLE CORPORATION , HARROD, William, B. , HALL, Tyson, J. , KNIGHT, Christopher, S. , PRINDLE, John, C., Jr. , ARMSTRONG, David, M.
发明人： HARROD, William, B. , HALL, Tyson, J. , KNIGHT, Christopher, S. , PRINDLE, John, C., Jr. , ARMSTRONG, David, M.
IPC分类号： C01B17/76
CPC分类号： C01B17/79 , C01B17/76 , C07C51/567 , C07C63/68
摘要： Sulfur trioxide is formed by a process wherein a first gaseous stream comprised of S0 2, SO 3 , and oxygen and/or air is passed into a bed of a vanadium-containing catalyst that oxidizes S0 2 to S0 3 and that releases therefrom a second gaseous stream comprised of sulfur trioxide. This process is improved in a first case by providing vaporized sulfur in the first gaseous stream so that the resultant mixture passes through a substantial portion of the catalyst bed, and maintaining the catalyst bed at one or more temperatures in the range of about 450 to about 700 °C. The sulfur is oxidized to S0 2 . As a result, the second gaseous stream released from the downstream end portion of the catalyst bed has an enriched content of sulfur trioxide, which can be used for production of compounds such as tetrabromophthalic anhydride. In a second case, a stream of sulfur dioxide is generated from sulfur and an oxidant, and this stream is introduced into the first gaseous stream referred to above. In this second case, the feed of sulfur dioxide replaces the vaporized sulfur used in the first case. As in the first case, an enriched stream of sulfur trioxide is released from the downstream end of the catalyst and can be used for producing compounds such as tetrabromophthalic anhydride.
摘要翻译：三氧化硫是通过一种方法形成的，其中由SO 2，SO 3和氧气和/或空气组成的第一气态物流进入含氧催化剂的床中，其将SO 2氧化成SO 3，并从其中释放出由硫组成的第二气态物流三氧化二砷。在第一种情况下，通过在第一气流中提供蒸发的硫使得所得混合物通过催化剂床的大部分，并将催化剂床保持在约450至约 700°C。硫被氧化成SO 2。结果，从催化剂床的下游端部排出的第二气态物质具有富含三氧化硫的含量，可用于生产四溴邻苯二甲酸酐等化合物。在第二种情况下，硫和氧化剂产生二氧化硫流，并将该流引入上述第一气流。在第二种情况下，二氧化硫的进料代替第一种情况下使用的汽化硫。如在第一种情况下，富集的三氧化硫流从催化剂的下游端释放出来，可用于生产化合物如四溴邻苯二甲酸酐。

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