Group 1 - The State Intellectual Property Office of China has granted a patent for a system and method for ion exchange purification of phosphoric acid post-treatment to Sinopec Nanjing Engineering Co., Ltd. and Sinopec Refining Engineering Group Co., Ltd. The patent number is CN116899258B, with an application date of June 2023 [1] - Sinopec Nanjing Engineering Co., Ltd. was established in 1986 and is primarily engaged in the construction and installation industry. The company has a registered capital of 5,560.05 million RMB and has participated in 5,000 bidding projects, holds 817 patents, and has 65 administrative licenses [1] - Sinopec Refining Engineering Group Co., Ltd. was founded in 2007 and focuses on water management. The company has a registered capital of 44,185.435 million RMB, has invested in 12 enterprises, participated in 63 bidding projects, holds 5,000 patents, and has 4 administrative licenses [1]
中石化炼化工程取得离子交换净化磷酸后处理系统及方法专利