As the reporter stepped into the production area of Sinopec Zhenhai Refining & Chemical Co., Ltd., they were immediately captivated by the towering, state-of-the-art refining complex. This facility stands as a symbol of modern industrial development and technological advancement in China's energy sector.
According to company officials, Zhenhai Refining & Chemical boasts a primary oil processing capacity of 20 million tons per year and an integrated processing capacity of 18.5 million tons per year. It has become the largest crude oil processing base in China, serving as a key hub for imported crude oil, sulfur-containing crude oil, and refined product exports. Additionally, it plays a crucial role in the country’s crude oil distribution network.
During the Tenth Five-Year Plan period, the company significantly expanded its refining capacity. Through continuous upgrades and technological improvements, the daily crude oil processing capacity now reaches 20 million tons annually. Last year alone, actual refining exceeded 16 million tons, accounting for roughly 10% of Sinopec’s total output and 6% of the national total. The company consistently ranks first in profitability within China’s refining industry.
By the end of 2004, Zhenhai Refining & Chemical had total assets of 15.89 billion yuan, with net assets reaching 11.57 billion yuan. Its asset-liability ratio remained stable and healthy. In the 2004 edition of Fortune China’s "Top 100 Listed Companies," the company ranked 13th. According to a performance evaluation by Salomon Consulting, Zhenhai Refining & Chemical is among the top 72 refineries in the Asia-Pacific region. Its advanced processing capabilities, particularly in handling high-sulfur crude oil, reflect the cutting-edge level of China’s refining industry.
Hong Bo, head of the technology development section at the management department, participated in the “15†refinery expansion project. He emphasized that each project focused on innovation and the application of self-developed technologies. During the expansion, most equipment was domestically produced, and key processes utilized in-house developed methods. The company also introduced resource-efficient technologies with low exploitation, high utilization, and minimal emissions, establishing a model for circular economy in the refining and chemical industries.
Zhenhai Refinery has implemented hundreds of clean production initiatives, with environmental investment making up 11% of total capital expenditure. Wastewater from sulfur-containing sources is treated and reused in cooling systems, while all hydrogen gas is captured and recycled. Water, gas, petrochemical by-products, and solid waste are all maximized for reuse, offering both environmental protection and significant economic returns.
Currently, the sulfur recovery rate exceeds 99.8%, effectively controlling sulfur dioxide emissions. Wastewater reuse capacity reaches 600 tons per hour, with a reuse rate of over 90%, nearing the goal of zero discharge. After process optimization and equipment upgrades, fresh water consumption per ton of crude oil has dropped to 0.54 tons, and wastewater discharge per ton of crude oil has been reduced to 0.18 tons—reaching international standards. Despite doubling crude oil processing volume, emissions of sulfur dioxide and chemical oxygen demand have significantly decreased, achieving both production growth and pollution control.
Zhenhai Refining & Chemical has been recognized as one of the first eight companies to receive the title of "National Environmental Friendly Enterprise." It is the only company in Sinopec and Zhejiang Province to win this honor.
The expansion of the refinery has had a strong impact on downstream industries. Products are delivered to enterprises outside the province via pipelines, such as Shanghai Secco’s 900,000-ton-per-year ethylene project, with naphtha supplied through undersea pipelines.
In addition, the company actively expands its chemical product chain, producing 600,000 tons of urea, 500,000 tons of paraxylene, and 200,000 tons of polypropylene annually. The paraxylene project was designated a key provincial initiative under the “15†plan. Zhenhai Refining & Chemical places great emphasis on the chemical market, adjusting strategies during the Tenth Five-Year Plan to focus on expanding chemical production and developing high-value-added products. Its Donghai brand asphalt has become the only domestic road asphalt brand used in Formula 1 racing tracks.
Screw Conveyor
The screw conveyor is a new type of transport equipment which continuously pushes materials by rotating screw blades in a closed shell with circular cross-section.
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