I D
× COMMENTARYEDITOR'S PAGECOVER STORYIN THE NEWSNEWSFRONTSCHEMENTATOR + Show More
Chemical EngineeringPiezoelectric wood
Researchers at the Swiss Federal Laboratories for Materials Science and…
Chemical EngineeringChementator briefs
L-Alanine DMC Biotechnologies, Inc. (DMC; Boulder, Colo.; www.dmcbio.com) has successfully…
BUSINESS NEWSTECHNICAL & PRACTICALFEATURE REPORTFACTS AT YOUR FINGERTIPSTECHNOLOGY PROFILESOLIDS PROCESSINGEQUIPMENT & SERVICESAPPLIED TECHNOLOGIESFOCUSNEW PRODUCTS + Show More

Comment uncategorized

A two-step process reduces nitrous oxide emissions

By Gerald Ondrey |

Nitrous oxide reduction unit at the caprolactam plant in Antwerp, Belgium (Source: Lanxess)[/caption] Last month, Lanxess AG (Cologne, Germany; www.lanxess.com) inaugurated a new plant in Lillo/Antwerp, Belgium to reduce the nitrous oxide emissions that are generated during the production of caprolactam. The €10-million investment breaks down approximately 500 metric tons (m.t.) of N2O per year, which is equivalent to the climate impact of 150,000 m.t./yr of CO2 (CO2e). A second plant to reduce an additional 300,000 m.t./yr of CO2e is planned to start up in 2023. The new plant uses a two-step process that was developed with cooperation partner CTP Chemisch Thermische Prozesstechnik GmbH (CTP; Graz, Austria; https://ctp-airpollutioncontrol.com). In the first step, N2O is broken down into N2 and O2 using a regenerative thermal oxidation (RTO) process at 1,000°C. In the second step, the oxides of nitrogen (NOx) are reacted with ammonia in a selective catalytic reduction (SCR) unit operating at 250–450°C to produce N2 and water. The combination has an overall 90% abatement efficiency. The plant has a high thermal efficiency, thanks to the use of a specially developed ceramic heat exchanger for heat integration. These heat exchangers…
Related Content

Chemical Engineering publishes FREE eletters that bring our original content to our readers in an easily accessible email format about once a week.
Subscribe Now
Steel Belt Units for Medical Membranes
Upstream Oil & Gas: Automation intelligence from wellhead to distribution
Video - CoriolisMaster
Video - Do you really need a thermowell?
The influence of IIoT in the dewatering process step of pigment production

View More