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C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
C01B17/00—Sulfur; Compounds thereof
C01B17/69—Sulfur trioxide; Sulfuric acid
C01B17/74—Preparation
C01B17/82—Preparation of sulfuric acid using a nitrogen oxide process
C01B17/84—Chamber process
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Inorganic Chemistry
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FR461641D1913-02-071913-08-13Régulateur par densité pour la pulvérisation de l'eau comprimée et de la vapeur dans les chambres de plomb
ExpiredFR461641A
(fr)