Chengzhi Yongqing starts up butadiene plant using Wison tech

Nanjing Chengzhi Yongqing Energy Technology Co., Ltd.’s new 100 kilotonnes/year butene-to-butadiene plant, built by Wison Engineering has started producing on-spec butadiene. The plant was deployed with oxidative dehydrogenation of butene-to-butadiene (ODH) proprietary technology licensed by Wison, and built by the Hong Kong-listed company through an EPC contract.

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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 maximising economics of C5 by-product stream from MTO.
This project achieved mechanical completion on May 8, 2019.

The ODH technology and catalyst were developed by Wison in 2013, and commercialised 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.

Besides CAPEX saving, production cost was cut down by RMB1,400 per tonne, and therefore improved project economics.

Founded in 1997, Wison Engineering (Stock code: 2236.HK) is a global leading engineering, procurement and construction management service provider. Wison can provide domestic and international clients with solutions covering the entire project lifecycle, including technology selection, project planning and consultation, project financing, EPC, commissioning and start-up. Wison specializes in the fields of petrochemical, coal-to-chemical, oil refining, natural gas chemical, oilfield ground services, LNG and power generation. With headquarters in both Shanghai and Hong Kong, Wison was listed in Hong Kong in 2012.