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Bayer builds new chlorine recycling plant in Shanghai

By Gerald Ondrey |

Bayer MaterialScience (Leverkusen, Germany; www.bayermaterialscience.com) plans to build another chlorine recycling plant at the Bayer Integrated Site Shanghai (BISS). The process for this new unit is based on the catalytic oxidation of hydrogen chloride using oxygen. The new technology has been developed by the Japanese company Sumitomo Chemical Co., Ltd. (www.sumitomo-chem.co.jp), and was licensed to Bayer MaterialScience. The plant will ensure the chlorine supply of the new250,000 ton/yr toluene diisocyanate (TDI) facility in Shanghai. Bayer MaterialScience has now broken ground for this new plant, which is based on the company’s innovative gas phase phosgenation process (CE, May 2007, p. 17; www.chemengonline.com/news/3249.html) and is scheduled to come on stream in 2010. The new chlorine recycling technology was awarded the prestigious Green & Sustainable Chemistry Award in Japan for being both energy-efficient and environmentally friendly. It enables a reduction in energy consumption of more than half versus the conventional process. "By introducing this new chlorine recycling process at Bayer MaterialScience we continue to implement the best and most innovative process technologies to strengthen our leadership…
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