Sulfur recovery method for treating acid gas
A technology for acid gas and sulfur recovery, applied in climate sustainability, sulfur preparation/purification, sustainable manufacturing/processing, etc. problem, to achieve the effect of process economy, solving SO2 emission substandard and high total sulfur yield
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Embodiment 1
[0055] A sulfur recovery process for acid gas treatment, including a thermal reaction stage, a catalytic reaction stage and a tail gas purification treatment stage.
[0056] 1. Thermal reaction stage:
[0057] 1) After the acid gas and air containing about 45% hydrogen sulfide enter the reaction furnace and mix, a high-temperature thermal reaction occurs in the reaction furnace, and the combustion temperature of the reaction furnace is 1150 ° C, so that part of the H 2 S to SO 2 , at high temperature H 2 S and SO 2 A Claus reaction occurs to generate elemental sulfur, forming a process gas containing a combination of hydrogen sulfide, elemental sulfur, and sulfur dioxide;
[0058] 2) After the reaction, the high-temperature air flow enters the waste heat boiler to recover heat and cool down to 300-320°C, and then cools down to 168°C through the primary condenser to separate the liquid sulfur. The liquid sulfur enters the liquid sulfur pool, and the process gas from the prim...
Embodiment 2
[0068] A sulfur recovery process for acid gas treatment, including a thermal reaction stage, a catalytic reaction stage and a tail gas purification treatment stage.
[0069] 1. Thermal reaction stage:
[0070] 1) After the acid gas containing about 50% hydrogen sulfide and air are mixed in the reaction furnace, a high-temperature thermal reaction occurs in the reaction furnace, and the combustion temperature of the reaction furnace is 1170 ° C, so that part of the H 2 S to SO 2 , at high temperature H 2 S and SO 2 A Claus reaction occurs to generate elemental sulfur, forming a process gas containing a combination of hydrogen sulfide, elemental sulfur, and sulfur dioxide;
[0071] 2) After the reaction, the high-temperature gas flow enters the waste heat boiler to recover heat and cool down to 300-320°C, and then cools down to 167°C through the primary condenser to separate the liquid sulfur. The liquid sulfur enters the liquid sulfur pool, and the process gas from the prima...
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