The production of sulfuric acid with the production of copper sulfate and recovery of the nitrous products in the form of nitric acid.

• 1. 再生硫酸铜的生产设备及再生硫酸铜的生产方法 [P] . 中国专利： CN112408458A . 2021-02-26
• 2. 由冶炼副产品硫酸铜生产食品级硫酸铜的方法 [P] . 中国专利： CN103303964A . 2013-09-18
• 3. Improvements in the Production of Concentrated Nitric Acid and Concentrated Sulphuric Acid from Nitrosulphonic Acid and Nitrous Sulphuric Acid. [P] . 英国专利： GB190603680A . 1906-11-01

  机译： 从亚磺酸和亚硫酸生产浓硝酸和浓硫酸的方法得到改进。

• 4. Method of recovery of nitrous vapours in the form of an aqueous nitric acid. [P] . 法国专利： FR525572A . 1921-09-24

  机译： 以硝酸水溶液形式回收亚硝酸蒸气的方法。

• 5. Process for the production of nitric acid and sulfuric acid, concentrated by means of the acid or sulphuric acid nitrosulfurique nitrous [P] . 法国专利： FR363157A . 1906-07-23

  机译： 硝酸和硫酸的生产方法，通过酸或硫酸将亚硝酸亚硫酸盐浓缩

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• 6. Reaction between Carbohydrates and Sulfuric Acid. III. Depolymerization and Sulfation of Chitosan by Sulfuric Acid [O] . KINZO NAGASAWA, NORIKO TANOURA 1972

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