Experimental Study of Gas Explosions in Hydrogen Sulfide-Natural Gas-Air Mixtures

Abstract

An experimental study of turbulent combustion of hydrogen sulfide (H 2 S) and natural gas was performed to provide reference data for verification of CFD codes and direct comparison. Hydrogen sulfide is present in most crude oil sources, and the explosion behaviour of pure H 2 S and mixtures with natural gas is important to address. The explosion behaviour was studied in a four-meterlong square pipe. The first two meters of the pipe had obstacles while the rest was smooth. Pressure transducers were used to measure the combustion in the pipe. The pure H 2 S gave slightly lower explosion pressure than pure natural gas for lean-to-stoichiometric mixtures. The rich H 2 S gave higher pressure than natural gas. Mixtures of H 2 S and natural gas were also studied and pressure spikes were observed when 5% and 10% H 2 S were added to natural gas and also when 5% and 10% natural gas were added to H 2 S. The addition of 5% H 2 S to natural gas resulted in higher pressure than pure H 2 S and pure natural gas. The 5% mixture gave much faster combustion than pure natural gas under fuel rich conditions.

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“…H 2 S can also accelerated corrosion rates (Gouda et al, 1993). SRBs' biomass and sulfide metals ions can also decrease the efficiency of secondary oil recovery due to reservoir plugging (Nemati et al, 2001), in addition to the toxic and explosive nature of hydrogen sulfide when mixed with air (Gaathaug et al, 2014). …”

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“…The souring of oil fields occurs because of the H2S and sulfide ions that are produced when the reservoirs are exposed to flooding during the secondary recovery process. The efficiency of secondary oil recovery can be reduced due to the SRB’s biomass and sulfide metal ions ( Gaathaug et al, 2014 ).…”

Biossurfactante produzido por linhagem termo-halofílica de >i<Bacillus alveayuensis>/i<: caracterização química e avaliação da atividade tensoativa em meio poroso com óleo e sobre microrganismos

“…80 São descritos na literatura como causadores de diversos problemas relacionados à indústria petrolífera, tais como: corrosão de dutos, estruturas metálicas e equipamentos, 3 contaminação de poços de injeção, acumulação de resíduos metálicos, 93 acidificação ocasionada pela produção de sulfetos de hidrogênio, 94 que, por ser um gás tóxico, também apresenta risco humano para os trabalhadores no local. 95 Portanto, uma estratégia para o controle destas bactérias redutoras de sulfato é altamente vantajosa para a indústria de petróleo e gás.…”