Clean production of chlorine from hydrogen chloride with Mn-compound as intermediate

doi:10.1016/j.cjche.2014.11.015

›› 2015, Vol. 23 ›› Issue (2): 435-440.DOI: 10.1016/j.cjche.2014.11.015

• ENERGY, RESOURCES AND ENVIRONMENTAL TECHNOLOGY • Previous Articles Next Articles

Clean production of chlorine from hydrogen chloride with Mn-compound as intermediate

Gang Yang¹, Yong Sun², Jinping Zhang¹, Zuohu Li¹, Yunshan Wang ¹

1 National Engineering Laboratory of Hydrometallurgical Cleaner Production Technology, Institute of Process Engineering, Chinese Academy of Sciences, Beijing 100190, China;
2 Department of Chemical Engineering, Monash University, VIC 3800, Australia

Received:2013-06-24 Revised:2013-12-13 Online:2015-03-01 Published:2015-02-28
Supported by:
Supported by the National High Technology Research and Development Program of China (2011AA060703) and the Innovation Funds of institute of processes engineering of Chinese Academy of Sciences (062702).

Clean production of chlorine from hydrogen chloride with Mn-compound as intermediate

Gang Yang¹, Yong Sun², Jinping Zhang¹, Zuohu Li¹, Yunshan Wang ¹

1 National Engineering Laboratory of Hydrometallurgical Cleaner Production Technology, Institute of Process Engineering, Chinese Academy of Sciences, Beijing 100190, China;
2 Department of Chemical Engineering, Monash University, VIC 3800, Australia

通讯作者: Gang Yang
基金资助:
Supported by the National High Technology Research and Development Program of China (2011AA060703) and the Innovation Funds of institute of processes engineering of Chinese Academy of Sciences (062702).

Abstract

Abstract: A new process is developed by using compound Mn as intermediate to produce Cl₂ from HCl, with the following steps. (1) HCl steam is decomposed by intermediate Mn₂O₃ to produce Cl₂ and MnCl₂ at 500℃. (2) Produced MnCl₂ is oxidized by water steam to produce MnO at 450℃. (3) The MnO compound is oxidized by air to yield Mn₂O₃. The X-ray diffraction (XRD) crystallite characterization results indicate the high conversion in each step under the optimum experimental conditions. Long term experiments for continuous conversion of HCl to Cl₂ by using Mn₂O₃ as intermediate in a fixed bed reactor indicate that over 90% of HCl could be converted to Cl₂ on stream of 30 h. The production of Cl₂ fromHClwithMn compound as an intermediate and atmospheric steam is a feasible and recyclable process.

Key words: Hydrogen chloride, Chlorine, Manganese chloride, Manganese oxide

摘要： A new process is developed by using compound Mn as intermediate to produce Cl₂ from HCl, with the following steps. (1) HCl steam is decomposed by intermediate Mn₂O₃ to produce Cl₂ and MnCl₂ at 500℃. (2) Produced MnCl₂ is oxidized by water steam to produce MnO at 450℃. (3) The MnO compound is oxidized by air to yield Mn₂O₃. The X-ray diffraction (XRD) crystallite characterization results indicate the high conversion in each step under the optimum experimental conditions. Long term experiments for continuous conversion of HCl to Cl₂ by using Mn₂O₃ as intermediate in a fixed bed reactor indicate that over 90% of HCl could be converted to Cl₂ on stream of 30 h. The production of Cl₂ fromHClwithMn compound as an intermediate and atmospheric steam is a feasible and recyclable process.

关键词: Hydrogen chloride, Chlorine, Manganese chloride, Manganese oxide

Gang Yang, Yong Sun, Jinping Zhang, Zuohu Li, Yunshan Wang . Clean production of chlorine from hydrogen chloride with Mn-compound as intermediate[J]. , 2015, 23(2): 435-440.

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Clean production of chlorine from hydrogen chloride with Mn-compound as intermediate

Clean production of chlorine from hydrogen chloride with Mn-compound as intermediate

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