Process of recovering sulphuric acid from the acid-tar of benzol purification

• 1. 一种合成2-硝基-4-甲砜基苯甲酸中回收酸套用方法 [P] . 中国专利： CN111302984B . 2022.02.22
• 2. 一种合成2-硝基-4-甲砜基苯甲酸中回收酸套用方法 [P] . 中国专利： CN111302984A . 2020-06-19
• 3. Process for recovering sulphuric acid from the acid-tar of benzol purification [P] . 英国专利： GB281547A . 1927-12-08

  机译： 从苯甲酸纯化的酸焦油中回收硫酸的方法

• 4. A process for recovering sulphuric acid from the acid-tar of benzol purification [P] . 英国专利： GB277619A . 1927-12-08

  机译： 从苯甲酸纯化的酸焦油中回收硫酸的方法

• 5. An improved process and apparatus for dealing with the acid sludge produced in the purification of benzol, and for recovering benzol and its homologues therefrom [P] . 英国专利： GB152054A . 1920-10-04

  机译： 一种改进的方法和设备，用于处理在苯甲酸酯纯化中产生的酸性污泥，并从中回收苯甲酸及其同系物

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• 5. The effects of initial acidity and oxygen-deficient air on the sulphur dioxide efficiency in the ferric sulphate-sulphuric acid leaching process [O] . Cha Louis Angelo 1926

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