C - Chemistry – Metallurgy – 01 – B
Patent
C - Chemistry, Metallurgy
01
B
C01B 17/76 (2006.01) C01B 17/16 (2006.01)
Patent
CA 2681425
The invention relates to a method for producing sulphuric acid. According to the invention, a crude gas containing SO2 is produced in a sulphuric acid recovery installation, the crude gas is conducted through at least one reaction container, in which a catalytic reaction of SO2 into SO3 takes place and the SO3 formed in this process is converted into sulphuric acid. The SO2 emission of at least one sub-stream of the gaseous stream that exits the sulphuric acid recovery installation is hydrogenated in an aftertreatment step with a gas rich in H2. The gaseous stream containing H2S that is thus formed is fed to the H2S scrubber of a coke-oven gas installation or petrochemical installation. The invention also relates to an installation for carrying out said method.
L'invention concerne un procédé permettant de produire de l'acide sulfurique, selon lequel un gaz brut contenant du SO2 est produit dans une installation de production d'acide sulfurique. Le gaz brut est acheminé à travers au moins un récipient de réaction dans lequel s'effectue une réaction catalytique du SO2 en SO3. Le SO3 qui en résulte est converti en acide sulfurique. Selon l'invention, les émissions de SO3 d'au moins un courant partiel du flux gazeux sortant de l'installation de production d'acide sulfurique sont hydrogénées avec un gaz riche en H2 dans un étage de traitement subséquent. Le flux gazeux à teneur en H2S obtenu par hydrogénation est acheminé dans le laveur de gaz H2S d'une installation de fours à coke ou dans une installation pétrochimique. L'invention concerne également une installation appropriée pour mettre ledit procédé en oeuvre.
Mcfadden Fincham
Uhde Gmbh
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