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Print version | Main page > Technology > Environmental protection  > Direct catalytic oxidation of H2S into elemental sulfur

Direct catalytic oxidation of H2S into elemental sulfur


The technology provides effective treatment of gases both with high (5-95 vol %) and with low (0.01-5 vol %) hydrogen sulfide content.

The compact-size units can be erected directly on sites of extraction and primary processing of oil and gas.

Тwo versions of the technology are available.
Gases with 5-95 % vol of hydrogen sulfide Gases with 0.01-5 % vol of hydrogen sulfide
“acid” gases,associated oil and natural gases,associated oil and natural gases,
hydrotreatment gases, Klaus tail gases
natural gases, etc. geothermal steam, biogas, etc.
The process is achieved in a fluidized catalyst bed reactor. The process is achieved in a fixed catalyst bed reactor; honeycomb catalysts also can be used
Operation parameters of the fluidized catalyst bed reactor
“Acid” gas capacity, m3/h up to 300
Sulfur yield, kg/h up to 200
Volume ratio of hydrogen sulfide in the inlet gas, % 60
Purification degree, % 97
Loaded catalyst, kg 100
Plant payback period, year 0.5-1.5
(compared to the Klaus process)
Reduction in capital cost down to 1/3 – 1/4
Reduction in operation cost down to 1/4 –1/5
Reduction (may be 100-fold) in expenses of waste and utilization of toxic effluents
High purity grade of target products (sulfur, fuel gas)
The technology are used at Russian refineries and oil deposits.

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