All 4 air separation units with a capacity of 105,000 standard cubic meters per hour in the second phase of Zhejiang Petrochemical have been put into operation
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On April 25, the 40 million tons per year integrated refining and chemical processing project of Zhejiang Petrochemical Co., Ltd. reached a key milestone: the commissioning of the eighth unit, the last of the four air separation units with a capacity of 105,000 standard cubic meters per hour, was successful. This marks the full commissioning of the air separation unit in Phase 2 of the project, which is continuously supplying the gases required for this world-class large-scale integrated petrochemical complex. “At 4:40, Pump A was inspected, its orientation was checked, and grease was applied to it; at 5:25, the pump was started officially, leaks were checked, and loading began… Zheng Jingang, an engineer on the Hangyang project, was keeping a record of the commissioning process in the control room, closely monitoring the values displayed on the screen and constantly adjusting the operating parameters of the air separation equipment together with the technical staff. At 20:00 on that day, the control screen of Unit 8’s air separation system showed that the purity of the oxygen and nitrogen products met the design specifications, indicating that the air separation unit in Phase II of Zhejiang Petrochemical’s 40 million tons per year integrated refining and chemical processing project had been successfully commissioned. This is also a new breakthrough in the field of extra-large packaged air separation units, following the successful development by Hangyang of the cold box for an 80,000-class air separation unit, which is the largest of its kind in the world.
At the beginning of the new year in 2001, Hangyang won the trust of its clients thanks to its R&D, manufacturing, and service capabilities demonstrated in the construction of four air separation units with a capacity of 83,000 standard cubic meters per hour for the first phase of Zhejiang Petrochemical’s project. As a result, it was awarded the contract to supply four such air separation units for the second phase of Zhejiang Petrochemical’s 40 million tons per year integrated refining and chemical processing project. In April of 0 year, 4 sets of 80,000-class complete air separation units developed by Hangyang began operating stably and successfully passed the assessment and acceptance. The requirements regarding grade, sophistication, and stability for the 100,000-class packaged air separation units produced by Zhejiang Petrochemical are higher than those for 80,000-class air separation units. After the horizontal installation of the fully equipped cold box is completed, it needs to be turned 90 degrees to stand upright; the requirements for this process are extremely complex and precise. To this end, Hangyang further optimized the design scheme, taking into full account factors such as lifting, transportation, safety, and energy consumption. It adopted more efficient core components as well as automated and intelligent production equipment. The lifting points that are prone to deformation were calculated, monitored, and inspected, ensuring that each support of the equipment fit perfectly with it. Nearly 4,000 weld joints were processed using comprehensive welding methods, ensuring no deformation during welding; the first-pass qualification rate exceeded 99.5%. This successful drive was made possible by Hangyang Air Separation’s core technologies, as well as its well-developed R&D platforms and systems for key technologies. Throughout the years, Hangyang has taken advantage of the characteristics of the air separation industry – large-scale projects, small markets, long development cycles, and the need for interdisciplinary collaboration – to establish a \"three-tiered testing platform.\" By relying on gas companies located across the country, it has achieved integration of production, research, and application, thereby helping to lift the level of \"Made in China\" products in the air separation industry to a new height.
It is also a new breakthrough in ultra-large-scale packaged air separation units, following the successful development by Hangyang of the cold box for an 80,000-class air separation unit, which is the largest of its kind in the world.
【Major Equipment in the Chemical Equipment Industry】286-105000 Nm^3/h Air Separation Complete Cryogenic Unit https://bbs.hcbbs.com/thread-3346568-1-1.html (Source: Hua Hai Chuan Liu – Haichuan Chemical Forum Website)
The purity of the oxygen-nitrogen products meets the design requirements