国家/地区 中国（2）
IPC部 B（2）
IPC大类 B01（2）
IPC小类 B01D（2）
IPC B01D067/00（2）
发明人 ZENG H（2）
公开年 2021（2）
申请年 2020（2） 
专利权人

Preparation of nano ceramic micro-filtration membrane composite material used in e.g. sewage treatment, involves mixing cerium acetate glycol solution, zinc acetate solution, yttrium acetate and graphene, heating and dry pressing.

ZENG G, ZENG H, LI H

Regenerating pollution-free waste lubricating oil involves statically dehydrating waste lubricating oil, performing distillation to remove distillate to obtain primary distillation substrate, and then performing distillation.

YU J, ZHAO H, ZENG H