公开(公告)号：US20220194790A1

公开(公告)日：2022-06-23

申请号：US17441826

申请日：2020-03-24

申请人： SGL CARBON SE

发明人： Christian WOLTZ ,  Odón de Jesús ANGELES PALACIOS ,  Martin KIBILI ,  Christopher LEUSCHNER

IPC分类号： C01B7/07 ,  B01D53/68 ,  B01D3/14

摘要： A unit for recovering hydrogen chloride from an aqueous liquid which includes hydrogen chloride and is contaminated with compounds of low or no volatility, the unit having an evaporation unit for forming, from the liquid, a vapour which contains hydrogen chloride and a liquid concentrate which is contaminated with the compounds of low or no volatility, a first distillation unit for separating the hydrogen-chloride-containing vapour into a first top product and a first bottom product, and a second distillation unit for separating a hydrogen-chloride-containing aqueous fluid into a second top product and a second bottom product, one of these two distillation units being configured to be able to implement therein a distillation above the ambient pressure, and the other of these two distillation units being configured to be able to implement therein a distillation below the ambient pressure.