Serve the country with practical actions; promote the nation through technology.

—— Written on the occasion of the successful manufacturing and delivery of the world-class super-large spiral tube heat exchanger for the Sinopec Ningbo Zhenhai Refining and Chemical Co., Ltd. localization project at Dalian Dongfang Yipeng.

The clouds gather the colors of summer, and the leaves move with the sounds of autumn.

At the moment when the whole country is comprehensively studying and deeply implementing the spirit of the 20th National Congress of the Communist Party of China, further deepening reforms and writing a new chapter in the new era, the key project of the national 14th Five-Year Plan, the high-end synthetic new materials project of Sinopec Ningbo Zhenhai Refining Co., Ltd.The 600,000 tons/year propane dehydrogenation unit, high-temperature large gas-gas heat exchanger engineering development and application localization project——the first set of world-class super-large spiral tube heat exchangers was successfully manufactured at Dalian Dongfang Yipeng Equipment Manufacturing Co., Ltd. on August 20, 2024.Warm congratulations on the successful manufacturing of the super-large spiral tube heat exchanger by Sinopec Zhenhai Refining at Dalian Dongfang Yipeng.

Industry experts from Sinopec, university professors, research institute directors, scholars, colleagues from the equipment manufacturing industry, and journalists from media outlets such as Liaoning TV, Liaoning Daily, Beidou Media, and Lushun TV attended to witness Sinopec.The solemn and eternal historical moment of the factory acceptance meeting for the "Ten Dragon" technology tackling project——the development and application project of the high-temperature large gas-gas heat exchanger at Zhenhai Refining.

The super-large spiral tube heat exchanger for the Sinopec Zhenhai Refining propane dehydrogenation unit has an inner diameter of 6.1 meters, a total length of about 28 meters, and a total metal weight of 850 tons. It is currently the heaviest, largest in diameter, longest, with the largest heat exchange area, highest technical requirements, most precise welding process, and greatest manufacturing difficulty single unit in China and even the world. Its successful design and manufacturing are of great significance for the large-scale development of the unit.

Sinopec Zhenhai RefiningThe on-site meeting of the acceptance of the "High-Temperature Large Gas-Gas Heat Exchanger Engineering Development and Application" localization tackling project.

This equipment is from Sinopec.The "High-Temperature Large Gas-Gas Heat Exchanger Engineering Development and Application" localization technology "Ten Dragon" tackling project has set unprecedented heights and difficulties as well as technical challenges for Dongfang Yipeng in terms of technical design, industry-university-research cooperation, technical exchanges, intelligent manufacturing, process flow, welding technology, processing difficulty, workshop hoisting, component assembly, equipment spraying, and packaging transportation.

From the signing of the contract to the completion of manufacturing, Sinopec's Material Equipment Department, Sinopec Guangzhou Engineering Company, Sinopec Zhenhai Refining Company, Dalian Dongfang Yipeng, Dalian University of Technology, and Nanjing Sanfang Chemical Equipment Supervision Company held nine meetings for docking, exchanges, discussions, and tackling. Dongfang Yipeng has always adhered to the concept of technological innovation and industry refinement, striving for excellence in quality and aiming for high standards in indicators. The design team, welding team, and winding workshop team of the technology center work together with a common goal. Faced with the challenges of the ultra-long and ultra-heavy spiral heat exchanger, the special welding structure of the high-temperature end tube plate and heat exchange tube inner hole, and many other difficulties, the chairman of the company, Xing Pengwan, personally took the lead, guiding the engineering technicians and operation teams to use their intelligence, stimulate innovative vitality, and work hard to overcome difficulties. They continuously improved processes, optimized designs, and tried every means to overcome challenges. They meticulously designed and deliberated over countless days and nights, not overlooking any detail, striving for excellence in every aspect. Each discussion and revision was a collision and sublimation of ideas, laying a solid foundation for the final success.

Chairman Xing Pengwan of Dongfang Yipeng had a cordial exchange with Shou Binan, the chief engineer of the China Special Equipment Inspection and Research Institute and the chief expert in special equipment safety technology of the State Administration for Market Regulation, at the expert review meeting.

This equipment innovatively adopts small diameter thick tube plate inner hole welding technology at the high-temperature end, independently develops new anti-wear and anti-vibration pads, and innovatively uses non-contact assembly technology for ultra-large and ultra-heavy heat exchange tube bundles and shells. It has independently designed ultra-large thousand-ton level spiral tube machines, gas protection tools for inner hole welding, and rapid pressure testing tools for heat exchange tubes.

Dongfang Yipeng has organized production from the determination of technical drawings to material procurement, from tool design to production organization, with shift manufacturing. In the ultra-large spiral tube clean workshop, bright white steel pipes shuttle through the large spiral tube machine developed by Yipeng people, weaving beautiful geometric patterns; the welding rods in the hands of the welders emit dazzling arcs, and sparks fly; the custom-designed tracks carry the tools independently developed by Yipeng people, and the superb craftsmanship fully expresses the "craftsman spirit" of Yipeng people.Craftsman spirit.

With collective strength, nothing is insurmountable; with collective wisdom, nothing is unachievable.

Dongfang Yipeng fromFrom the signing of the contract on March 6, 2023, to the completion of manufacturing on August 20, 2024, the task of manufacturing the first set of world-class super-large spiral tube heat exchangers for the Sinopec high-temperature large gas-gas heat exchanger engineering development and application localization tackling project was successfully completed nearly two months ahead of schedule. This not only refreshed the equipment manufacturing capacity of super-large efficient spiral heat exchangers in China but also added new momentum to the vigorous development of the Chinese petrochemical industry.The emergence of the world-class super-large spiral tube heat exchanger from Sinopec is like a dazzling new star rising in the sky of technology, illuminating the path of technological development. It not only fills the gap in the domestic field of Sinopec but also wins more voice for China in the international energy market.Sinopec Guangzhou Engineering Company, Dongfang Yipeng, and Nanjing Sanfang Supervision Company held a tackling meeting on-site.

The successful manufacturing of the world-class super-large spiral tube heat exchanger by Sinopec marks a further enhancement of Dalian Dongfang Yipeng Equipment Manufacturing Co., Ltd.'s capabilities in technological innovation, research and development.The "intelligent" manufacturing capabilities and process levels have been further improved. This contributes to building a new development pattern for the private economy, enhancing innovative strategic planning, developing new quality productivity according to local conditions, supporting the local economic development and business environment construction in Dalian, achieving a new economic breakthrough in the revitalization of the old industrial base in Northeast China, enhancing the visibility and reputation of enterprises, and assisting Dongfang Yipeng in its next 20 years of development, implementing the spirit of the 20th National Congress of the Communist Party of China with intelligent achievements, contributing Eastern wisdom and strength, and laying a solid foundation for the development of China's national equipment manufacturing industry to go global.

Dongfang YipengThe "craftsman team" production scene of the super-large spiral tube heat exchanger.

A refreshing breeze breaks the heat, a triumphant song of the Third Plenary Session; clouds gather, summer colors fade, and joyful news frequently arrives from the vast land of China.

Sinopec Zhenhai Refining & Chemical's high-end synthetic new material propane dehydrogenation unit, a project for the development and application of large high-temperature gas-to-gas heat exchangers with domestic innovation.——The first world-class ultra-large spiral tube heat exchanger has been successfully manufactured by Dongfang Yipeng, marking a significant milestone. It signifies a historic spring for China's private enterprises and economy, coinciding with the successful convening of the 20th National Congress of the Communist Party.

Sinopec Zhenhai Refining & Chemical's ultra-large spiral tube heat exchanger has been successfully loaded and is ready to set sail from Lüshun New Port.

From the eastern coast to the western Gobi, from the northern border to the southern sea, batches of major national equipment shining with Chinese wisdom and strength continue to emerge, showcasing confidence and determination in achieving high-level technological self-reliance. The first world-class ultra-large mixed feed spiral tube heat exchanger has been successfully manufactured by Dongfang Yipeng, achieving a series of innovations in technological innovation, product structure innovation, and process design, which are crucial for adjusting the energy structure, building a green low-carbon economy, achieving energy conservation and emission reduction, and addressing climate change."Building a Beautiful China" has significant practical implications.The ocean-going cargo ship carrying major national equipment sets sail towards the victorious harbor of Ningbo.

The East rushes forward, the sea surges ahead.

The tide of reform and opening up is surging. Located in Northeast Asia.Dalian Dongfang Yipeng, a coastal open city and a hub of the "Belt and Road" maritime and air intersection, bears historical responsibilities and contemporary missions. Dongfang Yipeng will always adhere to the orientation of the world's technological frontier and national strategic needs, aiming at the direction of "specialized, refined, distinctive, and innovative," continuously deepening the construction of an innovation system integrating production, education, research, and application, enhancing the company's continuous innovation capability and core competitiveness, developing towards high-end, intelligent, and green, developing new quality productivity according to local conditions, and continuously promoting the economy towards high-quality development. We will vigorously promote the spirit of entrepreneurship, actively fulfill social responsibilities, contribute to the local economic development of Dalian and the comprehensive revitalization of Liaoning, and passionately contribute the wisdom of the East and the strength of Yipeng people to achieve Chinese-style modernization.

Looking far at Laotieshan, the vast universe supports half the sky; filling the Bay of Bohai, Dongfang Yipeng soars into the sky.