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The ACO unit of the Yan’an coal, oil, and gas resources comprehensive utilization project produced qualified products. Author/Source: Yaha Coal Chemicals. Date: October 23, 2018. Clicks: 35. At 11 a.m. on October 19, the 400,000 tons per year light oil processing unit (ACO) of the Yanenenghua project, which was EPC-general contracted by Beijing Engineering Company, successfully produced qualified ethylene and propylene products. Thus, the main process flow of this device – including conversion, quenching, compression, cold separation, hot separation, and oxidation of waste alkali – has been established, marking a partial success. This unit is the first hydrocarbon catalytic cracking unit in China to date. ACO catalytic cracking technology replaces the traditional high-temperature steam cracking process by using catalytic reaction techniques to produce high-value materials such as ethylene and propylene at lower temperatures, thereby reducing energy consumption and CO2 emissions. It is reported that the ACO unit, as one of the key units in the energy expansion project, receives great attention from the group company. Since construction began in April 2016, faced with complex processes and a challenging geographical environment, the engineers of the ACO project team overcame difficulties head-on, constantly striving for new heights and making new breakthroughs. They ultimately succeeded in completing the project on schedule, earning high praise from the client. To date, all performance indicators of the device meet the expected standards; it operates smoothly, and the process parameters are within normal ranges. The Yan’an Coal, Oil, and Gas Resources Comprehensive Utilization Project was invested in and constructed by Shaanxi Yanchang Petroleum Group. It is an integrated upstream-downstream project that uses coal, light oil, and natural gas as primary raw materials, with methanol deep-processing units and light oil processing units as its core components. The project covers an area of 3,500 mu, and the estimated total investment is 21.6 billion yuan. The project mainly involves the construction of 8 main production units, including ones for manufacturing 1.8 million tons per year of methanol, 600,000 tons per year of methanol derivatives, 400,000 tons per year of light oil products, 450,000 tons per year of polyethylene, 250,000 tons per year of polypropylene, 200,000 tons per year of butanol, 80,000 tons per year of dipropylheptyl alcohol, and 50,000 tons per year of EPDM rubber, along with the supporting utility systems. Construction of the project began on September 11, 2015; the installation was successfully completed by the end of 2017, and single-unit testing started in the first half of 2018. On September 2, the MTO and olefin separation units were successfully commissioned for the first time!