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Manufacture of sulphuric acid from hydrogen sulphide gas
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Procédé et installation de fabrication de nitroparaffines par nitration d'hydrocarbures en phase gazeuse
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Process for recycling nitrogen oxides from nitrosyl sulfuric acid to produce concentrated or highly concentrated nitric acid and sulfuric acid
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一种简单、安全的分析纯硫酸制备方法
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Manufacture of sulphuric acid
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Procede d'oxydation thermochimique de l'oxyde de diazote.
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Procede et installation pour la recuperation d'oxydes d'azote provenant d'usines
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Process for removing oxides of nitrogen and sulfur from waste gases
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