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Wison Engineering announces startup of butene-to-butadiene plant in Nanjing

By Mary Page Bailey |

Wison Engineering Services Co. Ltd. announced that on August 11, Nanjing Chengzhi Yongqing Energy Technology Co., Ltd.’s new butene-to-butadiene plant, built by Wison Engineering, started up successfully and produced on-spec butadiene. The plant was deployed with Oxidative Dehydrogenation of Butene-to-Butadiene (ODH) proprietary technology licensed by Wison, and built by Wison through an EPC contract. The plant is designed to produce 100,000 metric tons per year (m.t./yr) or butadiene.

This is the second commercial application of Wison’s ODH technology and catalyst, and it is also Wison’s first commercial project for integrating an ODH plant with MTO plant and maximizing economics of C5 by-product stream from MTO. This successful start-up further proves Wison’s capability in developing and commercializing new technologies, setting a new milestone for Wison’s path for technological innovation.

The ODH technology and catalyst were developed by Wison in 2013, and commercialized in 2016. In the first licensed plant, ODH catalyst retained its high activity after 3000 hours continuous operation time without regeneration. The catalyst performance remained robust with 80.0% n-butene conversion rate, 93% butadiene selectivity and over 74% butadiene yield. Beside CAPEX saving, production cost was cut down by RMB 1,400 per ton, and therefore improved project economics.

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