Method for removing hydrogen sulfide from natural gas

Details Method for removing hydrogen sulfide from natural gas Method for removing hydrogen sulfide from natural gas

C - Chemistry, Metallurgy

10

L

C10L 3/10 (2006.01) B01D 53/52 (2006.01) B01D 53/73 (2006.01) C01D 5/00 (2006.01)

Patent

CA 2288645

A process for removing hydrogen sulfide from a natural gas stream. Use is made of heat and pressure to induce spontaneous combustion of sodium sulfide. The latter is formed by contacting the stream with an alkali earth salt and subsequently treating the so formed sodium sulfide with sodium bicarbonate to form sodium sulfate. The sodium sulfate is a useful precursor in further chemical processes.

L'invention concerne un procédé de suppression du sulfure d'hydrogène d'un courant de gaz naturel. On utilise de la chaleur et de la pression pour induire la combustion spontanée du sulfure de sodium. On forme ce dernier en mettant le courant en contact avec un sel terreux alcalin et on traite ensuite le sulfure de sodium ainsi formé à l'aide de bicarbonate de sodium de sorte que du sulfate de sodium soit formé. Le sulfate de sodium est un précurseur utile dans d'autres processus chimiques.

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