Hydrogen Sulfide Removal With LO-CAT® II From Sour Associated Gas

In November of 1999, PT Pertamina (Indonesia’s state-run oil company) installed the LO-CAT® II Hydrogen Sulfide Oxidation Process for their Mudi Field in East Java, Indonesia. The oil production operation at the Mudi field was producing up to 11 MMSCFD of sour associated gas. This associated gas was to be used to strip additional H₂S from the sour crude and to generate power in 3 gas fired turbines.

Pertamina investigated several alternative sulfur recovery options, evaluating each in accordance with the following criteria:

• Gas capacity turndown requirement = 3:1
• H₂S concentration turndown requirement = 3:1
• H₂S in effluent gas £ 10 ppmv (removal efficiency = 99.9+%)
• Minimal operator attention
• Produce a sulfur product suitable for agricultural use
• Proven reliable process