Recycling
Bayer constructs world-scale plant for chlorine recycling in Shanghai
Sep 22, 2006
Announced on September 20, Bayer MaterialScience AG is planning to construct world-scale production plants to manufacture the polyurethane raw materials MDI and TDI at the integrated Shanghai plant.
The chlorine required to operate these plants is produced on site at the world's largest hydrochloric acid recycling plant. Work is currently in progress on Bayer MaterialScience's new hydrochloric acid electrolysis facility, which offers an annual capacity of 215,000 metric tons of chlorine and is due to be commissioned in 2008.
The innovative oxygen-depleting cathode (ODC) technology which has been developed by Bayer MaterialScience and partners will be used at the plant on a world scale for the first time.
Hydrochloric acid occurring as a by-product in isocyanate production is separated during electrolysis into chlorine and water by means of electricity, with oxygen as a further coreactant. The chlorine obtained is reused for isocyanate production and thus deployed in a continuous cycle. The electrode that depletes the oxygen functions as a cathode, which is why the new process is referred to as oxygen-depleting cathode technology.
The chlorine required to operate these plants is produced on site at the world's largest hydrochloric acid recycling plant. Work is currently in progress on Bayer MaterialScience's new hydrochloric acid electrolysis facility, which offers an annual capacity of 215,000 metric tons of chlorine and is due to be commissioned in 2008.
The innovative oxygen-depleting cathode (ODC) technology which has been developed by Bayer MaterialScience and partners will be used at the plant on a world scale for the first time.
Hydrochloric acid occurring as a by-product in isocyanate production is separated during electrolysis into chlorine and water by means of electricity, with oxygen as a further coreactant. The chlorine obtained is reused for isocyanate production and thus deployed in a continuous cycle. The electrode that depletes the oxygen functions as a cathode, which is why the new process is referred to as oxygen-depleting cathode technology.
原创，请勿转载
Specials
Recycling
SACMI (SHANGHAI) MACHINERY EQUIPMENT CO., LTD.
Coperion GmbH
YUYAO KAWAGUCHI Manufacturing Co., Ltd.
GUANGDONG ENMEI CHEMICAL TECHNOLOGY CO., LTD
FUJIAN NAN'AN STAR RUBBER&PLASTIC MACHINERY CO., LTD.
FUJIAN YANGZHU NEW MATERIAL SCIENCE & TECHNOLOGY CO., LTD
HUBEI XINJIANSHI MACHINERY TECHNOLOGY CO.,LTD
HEBEI GELIA PLASTIC MACHINERY SALES COMPANY
Comments
Specials
Recycling
Kirin and The Japan Steel Works conducted a demonstration test of alkaline depolymerization technology capable of rapidly depolymerizing PET using production-scale equipment, with commercialization in mind.
Sep 17, 2026
Automotive
At CRRE 2026, NIO will exhibit at the Sustainable Mobility Themed Zone, presenting both its flagship electric vehicle and sustainable consumer goods.
Sep 16, 2026
Recycling
For the chemical recycling industry, the ultimate test has shifted from "Is the technology viable?" to "How do we build the facilities, commercialize the products, and close the loop on the supply chain?"
Sep 9, 2026
Activities
CRRE 2026 allows visitors to discover next-generation recycling technologies at the exhibition booths and then see selected recycling operations in action through practical plant-visit routes.
Sep 4, 2026
Recycling
ReBioCycle, an EU-funded project, has demonstrated closed-loop recycling of PLA bioplastics from mixed plastic waste returning to virgin-quality material, marking a significant step towards circular packaging in Europe.
Sep 1, 2026
Automotive
As EU’s End-of-Life Vehicles Regulation was confirmed, Röhm’s PLEXIGLAS PMMA contributes to the circularity in future mobility, supporting customers with recycled materials.
Aug 27, 2026
