国家/地区 中国（3）
IPC部 C（3）
IPC大类 C01（3）
IPC小类 C01B（3）
IPC C02F001/66（3）
发明人 ZHAN Z（2）
公开年 2023（3）
申请年 2022（2） 
专利权人

Recycling waste water in preparation of graphene useful in optical, electrical, mechanical, and micro-nano processing, comprises e.g. treating graphene acidic wastewater obtained by acid washing process, degrading and decomposing and mineralizing by semiconductor strong ionization.

ZHAN Z

Zero-discharge treatment method for full resource utilization of waste acid in graphene production by e.g. adjusting supernatant pH to neutral by adding sulfuric acid, evaporating and concentrating by mechanical vapor recompression, crystallizing to obtain potassium sulfate, recycling water.

FENG X, FENG J, XIAO L, FENG S

Device used for extracting graphene, consists of stirring tank connected with feed tank and water tank, circulation pump connected to side of stirring tank through pipeline, pneumatic diaphragm pump, pressure filter device, oxidation catalytic device and filter device.

ZHAN Z