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Title: Designing sea water packed bed scrubber for reducing SO2 emissions of Iran’s south pars gas field phases 9 and 10 claus unit

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Title:
Designing sea water packed bed scrubber for reducing SO2 emissions of Iran’s south pars gas field phases 9 and 10 claus unit
Author Name:
Bahareh Vatankhahi zaferani, Nabiollah Mansouri
Abstract:
Studying of air pollution in special economic zones in Iran shows high concentrations of air pollutants. Selection of an appropriate and cost effective tail gas treatment process to follow existing Claus plants is a challenge facing natural’s gas plants and refiners in Iran. The most common approach is to install an amine-based tail gas treatment unit (TGCU); however installed cost and higher reliability can be achieved by combining two well established processes, super Claus and wet gas scrubber technology. Daily emissions of so2 from the South Pars gas field phase 9 and 10 due to treatment 1160 ton of acid gas and produce 220-260 ton / day of sulfur is about 17-18 ton. Due to low phases distance from Persian Gulf and high pH value of this saline water, using sea water as a solvent for packed bed scrubber is recommended process. Scrubber design was based on the assumption of 95% efficiency and 90% efficiency to reduce H2S in superclaus process. For treating 2495/40 kmol/hr acid gas, minimum sea water flow tare is about 5925 Kg/min and maximum flow rate was calculated 8887 kg/min. The scrubber bed height and diameter was calculated respectively 12 and 2.7 meter.
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