Covestro is pleased to announce that catalyst upgrades in emission control have cut the concentration of nitrous oxide (N2O) by 65 percent and nitrogen oxides (NOx) by 30 percent in exhaust gases at the nitric acid plant inside Covestro Integrated Site Shanghai (CISS), in a solid step in reducing emissions to preserve the Earth. N2O and NOx are the major exhaust gases from the production of the nitric acid plant.
N2O is one of the greenhouse gases included in the Kyoto Protocol with significant global warming potential, and could also have a significant impact on the ozone layer. NOx refers to nitrogen oxides that are most relevant for air pollution, namely nitric oxide (NO) and nitrogen dioxide (NO2), which contribute to the formation of smog and acid rain.
Thus, CISS committed to contain NOx emissions at its production by installing a selective catalytic reduction (SCR) facility at the nitric acid plant when it went into operation in 2008. During a turnaround in November 2016, the plant further cut the concentration of NOx by 30 percent by renovating its SCR catalyst bed in the tail gas treatment reactor and increasing the dosage of catalyst.
In order to reduce carbon footprint, Covestro in 2010 added a new N2O emission reduction catalyst to the plant, thereby reducing carbon dioxide equivalent (CO2e) emissions by 450,000 tons per year (a reduction of 1 ton of N2O is equivalent to a reduction of 310 tons of 2). During the overhaul last November, the plant replaced the N2O abatement catalyst with a new catalyst of higher efficiency, with an additional annual reduction potential of 210,000 tons of CO2e. The two upgrades together lead to a 65 percent reduction in N2O emissions.
“Covestro spares no efforts in looking for new emission reduction and energy conservation projects in our daily operation to mitigate environmental impact,” said Dr. Yun Chen, Head of CISS. “The latest upgrades of the nitric acid plant in CISS underline our dedication towards an even more sustainable production and the company’s value as well.”
Covestro’s global target is to reduce specific CO2e emissions by 50 percent over 2005 by 2025.
With 2016 sales of EUR 11.9 billion, Covestro is among the world’s largest polymer producers. Business activities are focused on the manufacture of high-tech polymer materials and the development of innovative solutions for products used in many areas of daily life. The main segments served are the automotive, electrical and electronics, construction and the sports and leisure industries. Covestro, formerly Bayer MaterialScience, has 30 production sites around the globe and employs approximately 15,600 people (full-time equivalents) as of the end of 2016.
This news release may contain forward-looking statements based on current assumptions and forecasts made by Covestro AG. Various known and unknown risks, uncertainties and other factors could lead to material differences between the actual future results, financial situation, development or performance of the company and the estimates given here. These factors include those discussed in Covestro’s public reports which are available at www.covestro.com. The company assumes no liability whatsoever to update these forward-looking statements or to conform them to future events or developments.