P. 6 ~ Continued - Amine cleaning technology tests successfully in Aramco plants

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Results obtained from Uthmaniyah and Hawiyah field tests of the Amine Shield slipstream unit technology led to the following conclusions:

• The Amine Shield slipstream unit has shown excellent performance in cleaning the DGA solution. Although the unit's processing capacity was limited to 35-70 gpm, which represents less than 1-3% of Uthmaniyah's high-pressure DGA and Hawiyah's GT-3 circulation rates, it resulted in marked improvement in DGA quality in short period.

• Up to 95% removal rate of suspended solids could be achieved across the Amine Shield slipstream unit.

• Up to 90% reduction in suspended-solids content in the amine system is achievable by the Amine Shield slipstream unit.

• Using hot water at 80-90° C. for unit regeneration is critical to ensure good performance of the Amine Shield slipstream unit.

• The current conventional filtration equipment (the precoat filter and carbon filters) for the DGA solution in gas plants is inefficient.

• Current amine analysis methods for suspended solids at gas plant laboratories are inaccurate and require revision and update.

• The Amine Shield slipstream unit capability is better demonstrated at high contamination levels (more than 100 mg/l. TSS and 100 ppm vol hydrocarbon)

• The use of this technology will reduce the contamination levels in the amine-glycol system, which will help improve the solvent performance, minimize foaming and equipment fouling, and reduce solvent losses. Additionally, the long-term benefit of sustaining a clean system will minimize testing and inspection and equipment repairs.

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