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Tuesday, 17 September 2019
Markets & companies, Raw materials market

Evonik evaluates production processes for specialty polyesters in their entirety

Wednesday, 21 December 2016

With an integrated concept, Evonik can enhance the production processes for more than 120 specialty polyesters. The polyesters are produced by companies in a large number of plants with different designs.

Evonik evaluates production processes for specialty polyesters in their entirety. Source: Evonik

Evonik evaluates production processes for specialty polyesters in their entirety. Source: Evonik

With the polyester process technology platform that was developed by experts in the Coating & Adhesive Resins Business Line it is now possible to optimize the entire production network in a sustainable manner.

High degree of complexity

"The particular challenge in the case of the polyester process technology platform is the high degree of complexity that is determined by the variety of products and also by the different designs of the plants," explains Sabrina Mondrzyk, who coordinates the platform. In addition, most plants don’t manufacture one single product continuously but numerous specialty polyesters one after the other. "In these batch processes the reaction conditions are changed step by step and have to be adapted for the respective product," adds Mondrzyk.

Findings are being used in the new Witten plant

An interdisciplinary team with members from Process Technology, Production, the business line and the Research department systematically analysed the global production landscape of polyesters and identified various factors for optimisation. The expertise that was developed during this time will now be used as a basis to keep the processes throughout the world competitive and to support development of the market in the future. For example, the findings are being used in the new plant for specialty copolyesters in Witten, which will commence operations in 2018 and will be characterised by its high levels of efficiency and product quality.

Minimising the volume of secondary products

With the help of process modeling and simulation, innovative analytics, and investigation of thermodynamic and hydrodynamic effects, the team also developed a whole range of measures that can already be used to improve the way that existing plants are operated. The first improvements have already been implemented, such as minimising the volume of secondary products and reducing raw material consumption. "By doing this, Evonik is making an important contribution towards environmental protection and reducing the consumption of natural resources," emphasizes Dietmar Wewers, head of the business line.

Binders in the coating of metal bands

Among other things, the company’s specialty polyesters are used as binders in the coating of large-scale metal bands and, increasingly, also for the interior coating of food cans. They are also used in reactive single-component and thermoplastic hot melt adhesives for technical joint applications.

Major driver of growth

Evonik Chairman Klaus Engel recognised this innovation when he presented the team of developers from the Resource Efficiency Segment with the company’s Innovation Award for new processes. "We do not innovate simply for the sake of innovation - our aim is to enhance quality of life and to create additional value for our customers," Engel noted. Innovations, he went on to say, are a major driver of growth at Evonik, making them an important pillar of the company’s strategy.

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