January 2020
Special Focus: Sustainability
Treat toxic, malodorous ethylene spent caustic using WAO technology
As China’s largest integrated refinery, Sinopec’s Zhenhai Refining & Chemical Co. (ZRCC) plant can process approximately 23 MM metric tpy of crude oil. The plant produces more than 50 fuel and chemical products, including different grades of gasoline, jet and diesel fuels, asphalt and polypropylene plastics, as well as more than 1 MM metric tpy of ethylene. The latter generates spent caustic, one of the world’s most toxic wastewaters.
The Authors
Mark Clark is a Product Manager with Siemens Water Solutions and a technical expert for Siemens Hydrothermal Technologies. His 25-yr Siemens career has covered all aspects of capital equipment production, including process engineering, project management, sales engineering and technical subject matter expertise. Over his career associated with hydrothermal technologies, Mr. Clark has either designed, managed construction of, or developed more than 50 wet air oxidation systems for the petrochemical and refining industries. He holds a degree in chemical engineering from Michigan Technological University.
Nan Xia is a Chief Process Engineer, as well as a Health, Safety and Environmental Engineer, working in both capacities with the Sinopec Zhenhai Refining & Chemical Co. His many responsibilities involve evaluating, implementing and directing the company’s ethylene wastewater treatment operations. Mr. Xia graduated from Liaoning Shihua University with a degree in environmental protection engineering.
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