| Acid Gas Treatment Technology |
| Acid gases that are produced from the low-temperature methanol absorption and sour water stripping processes in the coal chemical industry or from the sour water stripping and amine absorption-regeneration processes in the refining industry, contain highly concentrated gaseous H2S and organosulfur compounds. JNG's acid gas treatment technology integrates the Claus process with the proprietary EADS technology, compared with conventional 2nd stage Claus+ SCOT, 3rd stage Claus+ SCOT, SuperClaus and EuroClaus, can significantly reducing the system operating cost benefited from saleable ammonium sulfate byproduct while achieving a higher SO2 removal efficiency that can satisfy today's increasingly stringent emission regulations. |
| The Claus process is used to remove 93% to 98% of the H2S in acid gas in the form of elemental sulfur. The residual H2S in the tail gas is then completely converted to SO2 through incineration before the tail gas is sent to the ammonia desulfurization system to remove SO2 and produce ammonium sulfate. Oxygen enrichment is suggested if the sulfide content in the acid gas is lower than 35%. If the sulfide content is lower than 5% or the total sulfur production is less than 3 tpd, direct incineration followed by the ammonia desulfurization process is preferred. |
· The capital and operating cost of tail gas are reduced by 40% compared to the SCOT process
· Simple and efficient process, easy operation, small footprint and operational stability
· Outlet SO2 emission ≤35 mg/Nm3
· Ammonia slip ¡Ü3 mg/Nm3 |
| The old units are easy to retrofit. |
· Elemental sulfur recovery ¡Ý96%, and sulfur product meets the standard of the country or region where the project located
· Total sulfur recovery ¡Ý99.96%, ammonium sulfate product meets the standard of the country or region where the project located
· Outlet SO2 emission ¡Ü35 mg/Nm3
· Ammonia recovery ¡Ý99% |
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