Conscious interaction with nature and her resources is of little use if production processes themselves are not sustainably designed. This is why Covestro uses and develops innovative processes that ensure greater sustainability in manufacturing.
Whether it’s a basic chemical such as chlorine or polycarbonate and polyurethane – in the chemical industry, lots of energy is required. This is why we optimize the consumption of our production plants using innovative energy measurement and management systems. We want to make our processes simpler, more cost-effective and more environmentally-friendly. Researchers and process technicians are also working continuously on improvements, often in cooperation with external partners.

We use innovative manufacturing processes, such as the oxygen depolarized cathode technique in chlorine production that leads to a 25 percent saving in electricity compared to latest standard membrane technique. This makes a huge difference because of the massive amount of energy required in chlorine production: if this technology was used across the board in Germany alone, it would save as much energy per year as is consumed in Cologne, a city with millions of residents.

With so-called gas phase technology, we can also save 60 percent energy and up to 80 percent solvent usage in the manufacture of the foam component TDI (toluene diisocyanate), a precursor for flexible polyurethane foam. This means that a typical large-scale plant, one with a production volume of 250,000 tons of TDI, emits around 60,000 tons fewer carbon dioxide annually than in a conventional process.

The results speak for themselves: specific greenhouse gas emissions (mainly CO2)  are experiencing a downward trend across the board at Covestro. In 2017, these specific emissions totalled 0.386 metric tons of CO2 equivalents per metric ton of product. This figure is down 43.8% from 2005 and 4.9% lower than 2016. This positive development is largely due to improved energy efficiency in production. With the measures aimed at reducing emissions already successfully implemented, Covestro is well on its way to reaching the reduction goal it has set by the year 2025.