SO2 DISPERSION MATHEMATICAL SIMULATION OF FLARE COMBUSTION, CASE STUDY: ABOOZAR OIL AND GAS PLATFORM IN KHARG ISLAND

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ASADOLLAHFARDI G.; DELNAVAZ M.; KHAJOOE A.

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Journal: Modares Civil Engineering journal Year:2016 | Volume:16 | Issue:2 Page(s): 9-20

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Title

SO2 DISPERSION MATHEMATICAL SIMULATION OF FLARE COMBUSTION, CASE STUDY: ABOOZAR OIL AND GAS PLATFORM IN KHARG ISLAND

Author(s)

ASADOLLAHFARDI G. | DELNAVAZ M. | KHAJOOE A. | Issue Writer Certificate

Keywords

SO2Q3

ABOOZAR PLATFORMQ2

AIR POLLUTIONQ2

FLAREQ2

AERMOD MODELQ2

Abstract

Aboozar oil field is located around 75 km south west of Kharg Island, in Bushehr state, southern part of Iran. Aboozar oil and gas complex contains 3 production platforms: Aboozar-A (AA), Aboozar-B (AB) and Aboozar-C (AC). Each of them includes some oil and gas wells which feed the process facilities and in addition each one comprises separate FLARE system in which separated gas is FLAREd over there. Aboozar field offshore process is limited to oil and gas separation, and the produced gas from the separators is disposed in a common FLARE system in which more than 36 million standard cubic feet gas mixture are daily being FLAREd. Flaring is the common practice of burning off unwanted, flammable gases via combustion in an open-atmosphere, non-premixed flame. This gas may be deemed uneconomic to process (i.e. if it is far from a gas pipeline or if it is ‘sour’ and contains trace amounts of toxic H2S) or it may occur due to leakages, purges, or an emergency release of gas in a facility. The flaring process can produce different pollutants such as SO2 as an index pollutant which has a substantial role in the environment and human health. SO2 is one the most major pollutants emitted from production platform FLAREs due to gas mixture combustion. This pollutant concentration depends on the composition of gas sent to the FLARE combustion chamber and also FLARE combustion efficiency. To specify prevention and mitigation measures, it is needed to know about air pollutants concentration. In highly polluted places, to monitor amount of each pollutant all over the region, we should always measure concentration of pollutant by pollutant emission modeling from the source not to need costly routinely measurement by some special devices. Nowadays, AIR POLLUTION models are routinely used in environmental impact assessments, risk analysis and emergency planning, and source apportionment studies. A dispersion model is essentially a computational procedure for predicting concentrations downwind of a pollutant source, based on knowledge of the emissions characteristics. These models is based on mathematical calculation and used to estimate pollutants concentration. As the project target, FLARE modeling as a point source to investigate its concentration around the platforms to understand whether the concentration of pollutant is more than the standard limit value or not was considered. In this project, we have simulated SO2 emission by means of an advanced model based upon the Gaussian model, and we tried to find out SO2 dispersion pathway after flame. In this study, Aboozar production platform FLARE SO2 dispersion has been simulated by means of AERMOD View software and its concentration was determined. FLARE flame length and height was determined, using FLARE flame net heat release value, to achieve FLARE effective height. In addition, meteorological data was pre-processed in Rammet View Software to input in main software. Final results showed that SO2 estimated concentration is being exceeded from threshold limit value all over the complex in all living quarters and production and wellhead platforms based upon the American Conference of Governmental Industrial Hygienists standard. The most SO2 Concentration was determined in 800 km far away of AB platform. Relation coefficient between model and Field measurements was calculated equal to 0.97.

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APA: Copy

ASADOLLAHFARDI, G., DELNAVAZ, M., & KHAJOOE, A.. (2016). SO₂ DISPERSION MATHEMATICAL SIMULATION OF FLARE COMBUSTION, CASE STUDY: ABOOZAR OIL AND GAS PLATFORM IN KHARG ISLAND. MODARES CIVIL ENGINEERING JOURNAL, 16(2), 9-20. SID. https://sid.ir/paper/256823/en

Vancouver: Copy

ASADOLLAHFARDI G., DELNAVAZ M., KHAJOOE A.. SO₂ DISPERSION MATHEMATICAL SIMULATION OF FLARE COMBUSTION, CASE STUDY: ABOOZAR OIL AND GAS PLATFORM IN KHARG ISLAND. MODARES CIVIL ENGINEERING JOURNAL[Internet]. 2016;16(2):9-20. Available from: https://sid.ir/paper/256823/en

IEEE: Copy

G. ASADOLLAHFARDI, M. DELNAVAZ, and A. KHAJOOE, “SO₂ DISPERSION MATHEMATICAL SIMULATION OF FLARE COMBUSTION, CASE STUDY: ABOOZAR OIL AND GAS PLATFORM IN KHARG ISLAND,” MODARES CIVIL ENGINEERING JOURNAL, vol. 16, no. 2, pp. 9–20, 2016, [Online]. Available: https://sid.ir/paper/256823/en

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