| 摘要 |
<p>The invention relates to a method and apparatus for recovering sulfur from gaseous material containing hydrogen sulfide. The Claus process is improved by the use of a variable feed of two oxidizers (6, 9) having different oxygen content so that the temperature in the combustion step (1) can be optimized to increase sulfur recovery and to increase the throughput capacity of the process. The recovery process is further improved by providing a deficient oxygen feed in the combustion step (1) and feeding the bulk of the remaining required oxygen into catalytic steps (30a, b, c). The process is further improved by using two stage combustion means (1 and 1a) utilizing two oxidizers (6, 9) thereby insuring better destruction of admixtures in the feed gases in the combustion step (1). The process is further improved by the use of either auxiliary fuel feed (8) or water feed (10) to optimize the temperature of the combustion step (1). Yet another process improvement is provided by using two consecutive combustion stages, (1 and 1a), each having a burner (16), a reaction chamber (3), a boiler (4) and a condenser (29), so as to provide an increase in the throughput capacity of the system.</p> |
