Author(s): Yang Xiaobo, Feng Yong, Ma Baocai, Ma Xiaolong, Dong Chunhua, Song Xingfu, Qinghai Salt Lake Industry Co., Ltd., Qinghai Salt Lake Haina Chemical Industry Co., Ltd., East China University of Science and Technology National Engineering Research Center for Integrated Utilization of Salt Lake Resource
Pages: 145-146
Year: 2015 Issue:  15
Journal: Guangdong Chemical Industry
Keyword:  high-purity hydrogen chloride; special rectification methods; production; recycling economy;
Abstract: Several methods of high-purity gaseous hydrogen chloride production were discussed in the paper, including synthesis from hydrogen and chlorine, decomposition of metal chlorides by acids, stripping from concentrated hydrochloric acid, special rectification methods using dilute hydrochloric acid, purifying hydrogen chloride as by-product from petrochemical processes, thermal decomposition of amine hydrochloric and so on. Particularly, special rectification methods using dilute hydrochloric acid could not only produce high-purity hydrogen chloride, but also deal with the industrial waste chloric acid. It is an energy saving, cost effective method just catering for the scientific development concept. So it will be focused in following discussion.