New process for the production of Nitrous vapours in the manufacture of sulfuric acid.

• 1. 2-氰基-4-硝基苯胺生产中硫酸循环利用新工艺 [P] . 中国专利： CN105859580A . 2016-08-17
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• 3. The production of sulfuric acid with the production of copper sulfate and recovery of the nitrous products in the form of nitric acid. [P] . 法国专利： FR354073A . 1905-09-27

  机译： 硫酸生产与硫酸铜生产以及以硝酸形式回收亚硝酸产物。

• 4. Denitrification process of the nitrous acid, sulfuric acid in the process of production of sulfuric acid by means of the chambers of lead [P] . 法国专利： FR419609A . 1911-01-11

  机译： 铅制腔室生产硫酸过程中亚硝酸，硫酸的反硝化过程

• 5. 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。

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