Apparatus for the production of sulphuric acid, and components of the apparatus

• Main Author: FREDERICK WILLIAM STANLEY JONES ET FRANK SMITH
• Format: Patent
• Language: English; French
• Published: 31.08.1984
• Subjects: ALLOYS; BLASTING; CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOIDCHEMISTRY; CHEMISTRY; COMPOUNDS THEREOF; DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OFGENERAL APPLICATION; FERROUS OR NON-FERROUS ALLOYS; HEAT EXCHANGE IN GENERAL; HEATING; INORGANIC CHEMISTRY; LIGHTING; MECHANICAL ENGINEERING; METALLURGY; NON-METALLIC ELEMENTS; PERFORMING OPERATIONS; PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL; THEIR RELEVANT APPARATUS; TRANSPORTING; TREATMENT OF ALLOYS OR NON-FERROUS METALS; WEAPONS

The invention relates to an apparatus for the production of sulphuric acid, and to its components. This apparatus uses at least one gas/concentrated sulphuric acid contact unit which can be in the form of a dehydration tower 10 and/or of one or a number of absorption towers 11, 12, and of heat exchangers 10G, 11G, 12G. The contact unit and/or the heat exchangers are made of austenitic stainless steel with a high silicon content which can also be used in units for concentrating sulphuric acid. The corrosion rates obtained are reduced. Field of application: production of sulphuric acid. L'INVENTION CONCERNE UN APPAREIL DE PRODUCTION D'ACIDE SULFURIQUE, ET SES ELEMENTS.CET APPAREIL UTILISE AU MOINS UNE UNITE DE CONTACT GAZ-ACIDE SULFURIQUE CONCENTRE, POUVANT SE PRESENTER SOUS LA FORME D'UNE TOUR 10 DE DESHYDRATATION ETOU D'UNE OU PLUSIEURS TOURS 11, 12 D'ABSORPTION, ET DES ECHANGEURS DE CHALEUR 10G, 11G, 12G. L'UNITE DE CONTACT ETOU LES ECHANGEURS DE CHALEUR SONT REALISES EN ACIER INOXYDABLE AUSTENITIQUE A FORTE TENEUR EN SILICIUM QUI PEUT EGALEMENT ETRE UTILISE DANS DES UNITES DE CONCENTRATION DE L'ACIDE SULFURIQUE. LES VITESSES DE CORROSION OBTENUES SONT REDUITES.DOMAINE D'APPLICATION : PRODUCTION D'ACIDE SULFURIQUE.