This project will make the Xingfa sulphuric acid plant one of the largest in China. MAX3™ not only offers sulphuric acid plants savings in water usage, time and money, but it also allows them to recover more energy while achieving best-in-class emission levels, DuPont reports.
Yidu Xingfa Chemical Co Ltd has awarded DuPont Clean Technologies contracts for the engineering and technology license for this sulphuric acid plant. Xingfa is expanding its existing site, located in the Hubei province near Yichang city, with the aim of roughly doubling the phosphate fertilizer capacity. The new MECS® MAX3 acid plant will process 1,200,000 t/y of sulphuric acid per year, as well as support the production of an additional 400,000 t/y of phosphoric acid, 400,000 t/y DAP and 35,000 t/y of potassium phosphate monobasic.
The plant will enable the Xingfa site to meet or exceed the Chinese Ministry of Environmental Protection’s strict emission requirements which govern the location in the sensitive Yangtze river basin area. “DuPont Clean Technologies is very pleased to be providing its proprietary MECS MAX3 technology for Xingfa’s expansion project to enable the company to become one of the most efficient fertilizer producers in China. This MAX3 sulphuric acid plant is not only a significant step for both DuPont and Xingfa, but also for the sulphuric acid industry,” said Eli Ben-Shoshan, President of DuPont Clean Technologies, “Never before has sulphuric acid technology delivered more value to the end user. MAX3 not only offers sulphuric acid plants savings in water usage, time and money, but it also allows them to recover more energy while achieving best-in-class emission levels.”
The MAX3 plant for Xingfa’s expansion project will have both high pressure and intermediate pressure steam generation that will be used to produce electricity and provide heat to the plant. The plant combines a suite of technologies, including two recent technology breakthroughs – SolvR® and SteaMax™ heat recovery – in a revolutionary simplified sulphuric acid flow scheme. The Xingfa configuration will produce more than 1.5 t of high pressure steam per t of acid, which is an increase of more than 25% over conventional acid plant technologies. SolvR® is the second-generation regenerative technology which demonstrated best in class SO2 emission abatement at the first commercial installation.
MECS MAX3 technology is on the leading edge and further advances DuPont Clean Technologies’ commitment to delivering value to producers of sulphuric acid. This is the first time a sulphuric acid technology has been able to deliver this level of heat recovery, emission performance and favourable capital expense. Furthermore, MECS MAX3 acid plants are designed for a high on-stream time to avoid disrupting the downstream phosphoric acid production while also providing best in class SO2 emission abatement in compliance with local and country environmental requirements.
