C - Chemistry – Metallurgy – 01 – B
Patent
C - Chemistry, Metallurgy
01
B
C01B 17/74 (2006.01) C01B 17/76 (2006.01)
Patent
CA 2277577
The present invention relates to a process and to a device for the production of sulphuric acid. The said process, of the contact process type, comprises: - a first step of production of sulphur dioxide from a sulphur-comprising starting material and from an oxidant; - a second step of catalytic oxidation of the said sulphur dioxide to sulphur trioxide in a catalytic converter (20', 60') fed with oxygen; - a third step of production of sulphuric acid from the said sulphur trioxide, the said third step producing, in addition to the said sulphuric acid, waste gases. It is characteristically carried out with recycling of a portion of the said waste gases as at least a fraction of the said oxidant used during the said first step of production of sulphur dioxide.
Arpentinier Philippe
Dumont Marie Noelle
Kalitventzeff Boris
Marechal Francois
L'air Liquide Societe Anonyme Pour L'etude Et L'exploitation Des Proced Es Geo
L'air Liquide - Societe Anonyme A. Directoire Et Conseil de Surv
Ogilvy Renault Llp/s.e.n.c.r.l.,s.r.l.
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