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    CLN   CH0012142631


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Clariant : StyroMax® UL3 catalyst demonstrates outstanding…

01/11/2022 | 01:38am EDT
  • Risun's new styrene monomer plant in Tangshan reports productivity with rates exceeding 120% of the plant's nominal design capacity with usage of StyroMax UL3
  • StyroMax UL3 catalyst offers high activity and selectivity with significantly reduced steam consumption
  • The project is a collaboration between Clariant Catalysts and the process and engineering company, Ruihua Technology

MUNICH, January 11, 2022 - Clariant announced today that its StyroMax UL3 catalyst is demonstrating successful results at Risun's new styrene monomer plant located in Tangshan, China. 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 (Ruihua Technology). 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 styrene monomer 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-to-oil 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.

Zhi Gang Xu, President of Ruihua Technology, commented, "Clariant's advanced StyroMax UL3 catalysts and our ethylbenzene-to-styrene process have proven that they are a great match, bringing significant economic and process benefits for Tangshan Risun's new plant. We look forward to continued excellent results at the Risun plant, and to further collaboration with Clariant."

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 published this content on 11 January 2022 and is solely responsible for the information contained therein. Distributed by Public, unedited and unaltered, on 11 January 2022 06:37:08 UTC.

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