C - Chemistry – Metallurgy – 01 – B
Patent
C - Chemistry, Metallurgy
01
B
C01B 17/775 (2006.01) B01D 1/00 (2006.01) B01D 53/50 (2006.01)
Patent
CA 2216432
A process for producing in liquid phase, concentrated sulfuric acid in the liquid phase from a source of sulfur dioxide, is described. The process comprises converting the source of sulfur dioxide to sulfuric acid. The liquid phase comprises: a) nitric acid at a sufficient concentration to commence conversion in the presence of oxygen, of sulfur dioxide into sulfuric acid in the initial absence of sulfuric acid, b) nitric acid at a sufficient concentration to maintain conversion of sulfur dioxide in the presence of sulfuric acid either generated by said conversion or present at commencement of said conversion, and c) combined concentration of nitric acid and sulfuric acid ranging from 5M to 16M where the concentration of nitric acid is at least 5M in the initial absence of sulfuric acid, and a source of oxygen is introduced to the aqueous phase at a concentration sufficient to provide for such catalytic conversion of SO2 to H2SO4.
Procédé de production en phase liquide, d'acide sulfurique concentré en phase liquide à partir d'une source de dioxyde de sulfure. Le procédé consiste à convertir la source de dioxyde de sulfure en acide sulfurique. La phase liquide comprend a) de l'acide nitrique en concentration suffisante pour que la conversion puisse de dioxyde de sulfure en acide sulfurique puisse commencer en présence d'oxygène et en l'absence initiale d'acide sulfurique; b) de l'acide nitrique en concentration suffisante pour que la conversion de dioxyde de sulfure soit maintenue en présence d'acide sulfurique généré par ladite conversion ou présent au début de la conversion; et c) une concentration combinée d'acide nitrique et d'acide sulfurique de 5 à 16M, la concentration d'acide nitrique étant d'au moins 5M en l'absence initiale d'acide sulfurique, et une source d'oxygène étant introduite dans la phase aqueuse en concentration suffisante pour que cette conversion catalytique de SO¿2? en H¿2?SO¿4? ait lieu.
Catalytic Sulphur Corporation
Sim & Mcburney
LandOfFree
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