Low-energy-consumption system for preparing solid polyferric sulfate through crystallization and dehydration

• Main Authors: SONG JUN, LIANG ZHIJU, WANG WENZE, CHEN XIAOHUI, WANG FANGSHUN
• Format: Patent
• Language: Chinese; English
• Published: 21.12.2021
• Subjects: CHEMISTRY; COMPOUNDS CONTAINING METALS NOT COVERED BY SUBCLASSESC01D OR C01F; INORGANIC CHEMISTRY; METALLURGY

The utility model belongs to the technical field of solid water purifying agent preparation, and particularly relates to a low-energy-consumption system for preparing solid polyferric sulfate through crystallization and dehydration, which comprises a mixing tank connected with a liquid polyferric sulfate feeding line, the mixing tank is connected with an evaporator through a preheater and a heater in sequence, and a concentrated solution outlet of the evaporator is connected with a drying machine. And a discharge hole of the dryer is connected with the crusher. According to the device, the content of polymeric ferric sulfate in a solution is increased through concentration; then treating the concentrated polyferric sulfate solution through a crystallizing and drying process, crystallizing the viscous polyferric sulfate liquid in a drying machine to separate out solid polyferric sulfate, changing the viscous solution into solid-liquid mixed turbid liquid, continuously heating and evaporating in the drying mach