| 摘要 |
<p>To permit the processing of hydrogen sulfide-fixed nitrogen compound feed streams, e.g. H2S-NH3 mixtures without causing plugging problems usually encountered in a Claus sulfur plant due to the formation of solid nitrogen sulfur salts, a first hydrogen sulfide feed containing substantial quantities of fixed nitrogen compounds, a portion of a second hydrogen sulfide feed essentially free of fixed nitrogen compounds and air are combined in a first thermal reaction zone where the amount of oxygen present is sufficient to achieve a high flame temperature for essentially complete conversion of the fixed nitrogen compounds to inert nitrogen, but insufficient to consume all of the hydrogen sulfide present. The effluent of the first reaction zone is combined with the balance of the second hydrogen sulfide feed in a second thermal reaction zone where hydrogen sulfide and sulfur dioxide react to form sulfur. After sulfur condensation, the gas stream is passed to the conventional catalytic Claus conversion stage zone. There is also provided an improved reaction furnace for use in the process.</p> |
