公开(公告)号：US20200308013A1

公开(公告)日：2020-10-01

申请号：US16755155

申请日：2018-10-11

申请人： NOVOPRO PROJECTS INC.

发明人： Maziar REJAEE ,  Tom NEUMAN ,  Richard Warren CHASTAIN ,  Antoine LEFAIVRE

IPC分类号： C01D15/06 ,  B01J19/06 ,  B01J14/00 ,  B01J19/00 ,  B01D9/00 ,  B01D21/00

摘要： Systems and methods of producing potassium sulfate can involve converting a mixed salts feed stream into a conversion end slurry in a conversion unit, the mixed salts feed comprising at least one potassium-containing salt, at least one chloride-containing salt, at least one magnesium-containing salt and at least one sulfate-containing salt and the conversion end slurry comprising schoenite; separating conversion end slurry into a conversion end solids stream and a conversion brine; leaching the conversion end solids stream in a crystallization unit to produce a potassium sulfate product stream comprising potassium sulfate and a crystallizer mother liquor comprising magnesium sulfate and potassium sulfate; collecting heat generated in the conversion unit by a heat pump; and providing at least a portion of the heat collected to the crystallization unit to regulate a temperature of the potassium sulfate product stream and the crystallizer mother liquor stream contained in the crystallization unit.