1、 Hubei Dayukou Chemical Co., Ltd. was registered and established in August 2005, and became the holding company of CNOOC Petrochemical Co., Ltd. in March 2009. Dayukou Company integrates phosphate ore mining and fertilizer production, with multiple production lines. With the planning and deployment of China National Chemical Corporation to build a phosphorus compound fertilizer base in Hubei, more production lines were introduced in 2009 to expand production, forming a production scale of 1 million tons of high concentration phosphorus compound fertilizer per year.

2、 Dayukou Company actively responded to the national call for energy conservation and emission reduction, and carried out energy-saving renovations on its phosphoric acid workshop circulating water system. Several companies have proposed renovation plans before and after. Replace the original pump with a high-performance pump to improve pump efficiency, and renovate its pipeline system. Two energy-saving companies have proposed to renovate the system through energy-saving pumps.

3、 Dayu Electric Plan: The process design outlet pressure is 0.3Mpa to 0.6Mpa, and the design water pump is selected according to 0.6Mpa. In actual operation, the pipeline pressure is adjusted to 0.3Mpa through valves