At 10:06 on August 7, 2021, the 10/700,000 tons/year ethylene oxide/ethylene glycol unit of the Gulei Refining and Chemical Integrated Project was officially put into operation with oxygen. At 23:06, the output was qualified of monoethylene glycol products. After 13 hours, it set a record for the shortest original start-up product qualification in the industry, marking the first successful commissioning test of the 10/700,000 tons/year ethylene oxide/ethylene glycol unit of the Gulei Refining and Chemical Integrated Project.
The 10/700,000 tons/year ethylene oxide/ethylene glycol unit of the Gulei Refining and Chemical Integration Project adopts the process technology of the American Scientific Design Company (SD). Currently It is the largest single ethylene oxide/ethylene glycol unit in the Sinopec system, including four production units: EO reaction unit, EO distillation EG reaction unit, EG distillation unit and EO storage and transportation unit. It is general contracted by Sinopec Shanghai Engineering Company (SSEC) and constructed by Sinopec Nanjing Engineering Company. The Gulei Petrochemical Project Management Department is responsible for the project construction. Since the process package selection began in January 2018, with the support and efforts of the entire company, the device team has focused on the two focuses of project construction and production preparation, worked together, and proactively promoted to ensure that ethylene oxide/ethylene glycol The project is progressing steadily according to the established milestones. On June 28, 2019, the ethylene oxide/ethylene glycol unit broke ground and entered the comprehensive construction stage. The intermediate handover of the device was completed on March 28, 2021, which lasted 21 months.
On April 15, 2021, the ethylene oxide/ethylene glycol unit moved from project construction to the commissioning preparation stage. It has undergone water combined transportation (cold transportation, hot transportation), The network plan for commissioning and commissioning is steadily advanced through the steps of instrument joint adjustment, catalyst filling, pipeline purging, nitrogen replacement airtightness, equipment integrity inspection, and on-site inspection and evaluation by industry experts.
At 20:11 on July 19th, the device began to configure mixed ethylene glycol for system reverse operation. With the strong support of the patentee, oxygen mixing was completed on July 27th. Station (OMS) system testing. On August 4, with the joint efforts of all majors, the start-up and stable operation of the circulating gas compressor K-115 was successfully completed. On August 7, the device was commissioned for commissioning, which lasted four months. Finally, the ethylene oxide/ethylene glycol device was successfully commissioned and commissioned, and set a record in the industry for the shortest time from initial start-up to product qualification.
In terms of products, the million-ton ethylene and downstream deep processing units of the Gulei refining and chemical integration project are led by steam cracking units and methanol-to-olefin units. Extend development downstream along the C2, C3 and C4 product chains.
The project has a total of 16 sets of process production equipment. The purchased ethane, propane and light naphtha are cracked and separated by steam cracking equipment, and further processed by the cracked gasoline hydrogenation unit, aromatics extraction unit and butadiene extraction unit to obtain ethylene, propylene and butadiene. , benzene, mixed C4, C5, C9 and other basic organic chemical raw materials, together with the methanol to olefins unit to produce ethylene and propylene, are used by downstream chemical plants. Among them: the ethylene product chain includes: ethylene-vinyl acetate resin equipment, ethylene oxide/ethylene glycol equipment, styrene, etc.
The propylene product chain includes: propylene oxide (PO), polypropylene equipment (PP) and acrylic acid/ester equipment. The C4 product chain uses butadiene as raw material to extend backward to build an SBS device, which can be switched to produce SSBR products.
The raffinate C4 of the butadiene unit and the by-product C4 liquefied gas of the MTO unit are used as raw materials for the MTBE unit. The project hydrogen peroxide device ensures the supply of raw materials for the propylene oxide device. The project also includes a light wax device using kerosene as the main raw material and its downstream alkylbenzene device.
Industry insiders said that the Gulei refining and chemical integration is currently the largest petrochemical project in cross-strait cooperation, and has been included in the State Council’s major construction projects to support Fujian in accelerating economic and social development.
So far, Gulei Petrochemical Base in Fujian Province has invested in 17 petrochemical industry projects, with a total investment of more than 75 billion yuan. Among them, the second phase of the Sinopec Gulei refining and chemical integration project is planned to be included in the national petrochemical industry planning and layout plan. Fuhaichuang continues to maintain stable production of PX and PTA, and its production capacity ranks among the top in the country; the raw material plan of the Sinopec Gulei ethylene project strives to complete the “reserve conversion” within the year. planning” and commenced construction. In addition, a number of projects under construction such as Chimei ABS, Xinyang Technology, and Gulei Chemical are accelerating and will be put into production in the second half of the year.
It is reported that by the end of the “14th Five-Year Plan”, Fujian Gulei Petrochemical Base is expected to form two integrated refining and chemical industry chains with a energy level of 100 billion, with single sets of downstream petrochemical products and total The scale is in the leading position in the country, with annual production capacity reaching 21 million tons of oil refining, 3.5 million tons of ethylene, and 4.8 million tons of aromatics. It has cultivated several large-scale petrochemical enterprises that can participate in the international industrial division of labor and have an output value of over 10 billion yuan, forming an industrial cluster worth 100 billion yuan. </p
