[Chemical Equipment Powerful Equipment] 250 - the first domestically produced quenching oil circulation pump in alpine areas

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Red May for chemical workers! Reply rewards! ---------------------------------------------- The past ten years have been an era of great development for China's chemical industry. The emergence of many new processes, new products, and new equipment has also led to a great development in my country's chemical equipment, which has also promoted the rapid development of the petrochemical industry. Here we have collected and sorted out some of the achievements and breakthroughs made by my country's equipment companies in the large-scale and localization of equipment. Welcome everyone to share, discuss, and exchange, cheer for Made in China, and cheer for chemical equipment! On July 28, 2020, the new quenching oil circulation pump for the three E3 cracking units of Daqing Petrochemical Chemical Plant No. 1 was successfully put into operation. This pump was jointly developed by Daqing Petrochemical and Dalian Shenlan Pump Industry Co., Ltd. It is the first domestically produced quenching oil circulation pump for cracking units in high-cold areas. The successful production this time has broken the previous situation of relying on imports of quenching oil circulation pumps and successfully filled the domestic gap. 　　It is understood that the quenching oil pump is an important piece of equipment in the cracking unit. There are currently three E3 units in the plant, and they are in "two on and one on standby" status in daily production. Under heavy-load production conditions, in order to ensure stable operation of the system, three pumps need to run at the same time. In this case, there is no backup pump. Once there is a problem with the machine pump, it is easy to cause insufficient quenching oil circulation and affect production. To this end, Daqing Petrochemical decided to add a quenching oil circulation pump to the E3 unit to ensure the smooth operation of the unit under high load. 　　According to Feng Zhongliang, deputy director of the No. 1 Chemical Plant, because the viscosity of the quenching oil medium changes greatly and contains a large amount of hard coke powder particles, the performance requirements for the wear and corrosion resistance of the pump casing, impeller and other parts are extremely high. At present, domestic large-scale ethylene plant quenching oil pumps all rely on imports, and the price of each unit ranges from hundreds of thousands to one million US dollars. The price is high, the supply cycle is long, and the after-sales service costs are also high. 　　At the end of 2018, the factory provided the working conditions and operating parameters of the quenching oil pump, and successively raised a number of key technical issues such as the hydraulic performance of the quenching oil pump, the wear resistance of the main material, the vibration performance of the unit, and long-term stable operation protection and control. Through full demonstration and research, the design plan for the new quenching oil circulation pump of the E3 unit was finalized and jointly developed with Dalian Shenlan Pump Industry Co., Ltd. On July 22 last year, the quenching oil pump successfully passed the water test. At the end of June this year, it was officially developed successfully. 　　In order to ensure the smooth placement of the new pump, the plant completed the construction of new quenching oil pump pipelines, foundations, electrical instruments, etc. ahead of schedule, and conducted a comprehensive inspection of the dedicated inlet and outlet pipelines for the quenching oil pump. The technicians formulated a start-up plan for the quenching oil pump and successfully completed the installation, commissioning and various acceptance work. After 72 hours of trial operation monitoring, all indicators of the pump met the working condition parameter requirements and was successfully put into operation.