| 摘要 |
PURPOSE:To provide a tail gas treatment apparatus in clans process low in equipment cost and easy in operation control. CONSTITUTION:The tail gas treatment apparatus in a claus process sulfur recovery apparatus has a heating furnace 10 into which tail gas and reducing gas are introduced, a reducing catalyst reactor 20 into which the mixed gas led out of the heating furnace is introduced, waste heat recovery equipment 30 into which the reaction exhaust gas led out of the reactor is introduced and a compressor 40 raising the pressure of the gas led out of the waste heat recovery equipment and contains a separation membrane module 50 receiving the compressed gas led out of the compressor and selectively transmitting H2S gas, a circulating passage supplying the transmitted gas of the separation membrane module to the claus process sulfur recovery apparatus 100 and a passage supplying the non-transmitted gas of the separation membrane module to an incinerator 200. |
