Clean production of chlorine from hydrogen chloride with Mn-compound as intermediate
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Clean production of chlorine from hydrogen chloride with Mn-compound as intermediate
Chinese Journal of Chemical EngineeringVol. 23, Issue 2, Pages: 435-440(2015)
Affiliations:
1. National Engineering Laboratory of Hydrometallurgical Cleaner Production Technology, Institute of Process Engineering, Chinese Academy of Sciences,Beijing,China,100190
2. Department of Chemical Engineering, Monash University,VIC,Australia,3800
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.
DOI:
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.DOI: 10.1016/j.cjche.2014.11.015.
Clean production of chlorine from hydrogen chloride with Mn-compound as intermediate
摘要
Abstract
A new process is developed by using compound Mn as intermediate to produce Cl
2
from HCl
with the following steps. (1) HCl steam is decomposed by intermediate Mn
2
O
3
to produce Cl
2
and MnCl
2
at 500℃. (2) Produced MnCl
2
is oxidized by water steam to produce MnO at 450℃. (3) The MnO compound is oxidized by air to yield Mn
2
O
3
. 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 Cl
2
by using Mn
2
O
3
as intermediate in a fixed bed reactor indicate that over 90% of HCl could be converted to Cl
2
on stream of 30 h. The production of Cl
2
fromHClwithMn compound as an intermediate and atmospheric steam is a feasible and recyclable process.
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references
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