| 摘要 |
PURPOSE:To stabilize the performances of absorption and regeneration by treating reducing gas containing S component with an absorbent in the processes of absorption, regeneration, cooling and reduction respectively and recover heat continuously from high temperature gas in a reactor outlet in the regeneration process. CONSTITUTION:High temperature reducing gas 1 containing H2S and COS is fed into a reactor 16, in which H2S and COS are absorbed by Fe2O3 and the like, and turned into refined gas 42. On the other hand, a reactor 19 finished in absorption process in regenerated by gas containing O2 fed from a line 47 is regenerated, while gas generated from an outlet is heat recovered by a heat exchanger 48 and then guided into a S recovery device 53 and an S separator 57 to recover S and returned to a circulating gas line 41. A reactor 18, after the completion of regenerating process, feeds comparatively low temperature circulating gas from a blower 60 to carry out cooling. A reactor 17, after the completion of cooling process, reduces an absorbent through part of the high temperature reducing gas 1, and SO2 and H2S generated at that time are transferred to an S recovery system through a line 44. |
