MOSCOW (MRC) -- Clariant has recently announced that its StyroMax UL3 catalyst is demonstrating successful results at Risun’s new styrene monomer (MS) plant located in Tangshan, China, according to Hydrocarbonprocessing.
After a smooth and stable catalyst start-up in October 2020, the plant is reporting very profitable operation with excellent production output. The project is a cooperation between Clariant Catalysts and engineering company Changzhou Ruihua Chemical Engineering Technology Co. Ltd. Through Ruihua’s technology and Clariant’s catalyst, the Risun plant has been able to achieve productivity rates exceeding 120% of the new plant’s nominal design capacity - which is also the highest among all Ruihua process plants in China.
Stefan Heuser, Senior Vice President & General Manager at Clariant Catalysts, commented, “We are delighted by the results of our cooperation with Ruihua in this project. As one of China’s leading private chemicals groups, Tangshan Risun is a highly valuable reference for our StyroMax UL3 styrene catalyst, which has more than demonstrated its excellence for profitable SM production.”
Based on current catalyst performance, the plant is expected to maintain increased yields with productivity of 120% or more. At the same time, it is able to operate at an extremely low steam-tooil ratio of 1.1 wt/wt, which is the lowest among all Ruihua process plants in operation. Consequently, the Risun plant is reporting exceptional energy efficiency. Such benefits are possible for plants operating adiabatic units with low steam-to-oil ratios, since the catalyst is specially designed for these conditions.
The latest generation of the series, the StyroMax UL3 catalyst, is designed to promote dehydrogenation from ethylbenzene to styrene at ultra-low steam-to-oil ratios. While previous catalysts could provide either high activity or high selectivity at such conditions, StyroMax UL3 is the first catalyst to support both, thereby improving yield and significantly reducing process expenses for styrene producers.
As MRC reported earlier, in October 2020, Clariant announced the construction of a new state-of-the-art catalyst production site in China. This project represents a significant investment which further strengthens Clariant’s position in China and enhances its ability to support its customers in the country’s thriving petrochemicals industry.
The new facility will be primarily responsible for producing the Catofin catalyst for propane dehydrogenation, which is used in the production of olefins such as propylene. Thanks to its excellent reliability and productivity, Catofin delivers superior annual production output compared to alternative technologies, resulting in increased overall profitability for propylene producers, says the company. Construction at the Dushan Port Economic Development Zone in Jiaxing, Zhejiang Province was scheduled to commence in Q3 2020, and Clariant expects to be at full production capacity by 2022.
Ruihua Technology is China’s largest process technology licensor for ethylbenzene to styrene monomer, focused on processes with low energy and material consumption using various ethylene feedstock, such as polymer grade ethylene or high ethylene gas content. Over the past decade, the company has been awarded 22 references in China.
Clariant AG is a Swiss chemical company and a world leader in the production of specialty chemicals for the textile, printing, mining and metallurgical industries. It is engaged in processing crude oil products in pigments, plastics and paints.