| 摘要 |
<p>A process for producing Caro's acid by reaction of at least 85 % by weight sulfuric acid and at least 50 % by weight hydrogen peroxide wherein the sulfuric acid (9) and hydrogen peroxide (1) are fed through separate feed lines (11 and 3), respectively, into a funneling zone (17) open to the atmosphere, the feed lines (11) and (3) having air gaps between their ends and the funneling zone (17); passing the hydrogen peroxide (1) and sulfuric acid (9) by gravity flow from the funneling zone (17) into one end of a reaction zone (22) whose size permits a pressure drop which is at least 8 times the theoretical pressure drop for such reaction zone (22) and removing a mixture containing Caro's acid (28) from the exit end (26) of the reaction zone (22).</p> |
