Process for the production of sulfur, starting from the...

C - Chemistry – Metallurgy – 01 – B

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C01B 17/05 (2006.01) B01D 53/52 (2006.01)

Patent

CA 2560772

Process for the production of sulfur, obtained in pure form, and possibly easily disposable even at ambient temperature, starting from hydrogen sulphide contained in natural gas, which includes: a) oxidizing a portion of hydrogen sulphide to sulfur dioxide; b) dissolving in water the sulfur dioxide obtained in step (a) ; c) carrying out the reaction (I) : 2H2S+S02 .fwdarw. 3S+2H20 (I) making the remaining hydrogen sulphide to react with the solution prepared in step (b); and d) using the thus obtained sulfur suspension for the production sulfur or, alternatively, to use it for the disposal of the sulfur itself in a site reserved for such purpose.

Cette invention concerne un procédé de production de soufre obtenu sous forme pure et pouvant être facilement éliminé, même à température ambiante, à partir du sulfure d'hydrogène contenu dans du gaz naturel. Ce procédé consiste: a) à oxyder une partie du sulfure d'hydrogène en dioxyde de soufre; b) à dissoudre dans l'eau le dioxyde de soufre obtenu à l'étape (a); c) à effectuer la réaction chimique (I): 2H2S+S02? 3S+2H20 (I) qui pousse le sulfure d'hydrogène résiduel à réagir avec la solution préparée à l'étape (b); et d) à utiliser la suspension de soufre ainsi obtenue pour produire du soufre ou, dans une variante, pour éliminer le soufre lui-même au niveau d'un site réservé à cet effet.

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