国家/地区 中国（3）
IPC部 B（3）
IPC大类 B08（3）
IPC小类 B08B（3）
IPC B08B009/032（3）
发明人
公开年
申请年 2022（2） 
专利权人

Circulating mechanical graphene mechanism, has material returning pipe fixedly connected with right side of box body top part, and feeding tank whose right side is connected with material taking tank.

YU H

Air inlet pipe inner wall carbon removing method for chemical vapor deposition (CVD) growth graphene powder, involves cutting off oxygen, keeping nitrogen unchanged, and cooling after introducing oxygen/nitrogen mixed gas into set time.

CHANG B, DENG K, JIN H, WANG Z

Cleaning steel pipes involves using high-pressure gas pulse to flush the cleaning liquid into the pipeline to be cleaned, and introducing ultrasonic waves.

LI R