title: Laboratory test reactor for the investigation of liquid reducing agents in the selective catalytic reduction of NOx.
abstract: A test reactor was designed and built for investigating liquid reducing agents in the selective catalytic reduction (SCR) process in the laboratory. The design of the experimental setup is described in detail and its performance was evaluated. Using a glass nebulizer, liquid reducing agents were sprayed directly onto a catalyst positioned in a heated glass reactor with a length of 250 mm and an internal diameter of 20.4 mm or 40 mm. Model exhaust gases were mixed from individual gas components and were heated up to 450 °C in a heat exchanger before entering the reactor. The off-gas was analyzed using two complimentary techniques, a multi-component online FTIR gas analysis and a liquid quench gas absorption setup, to detect higher molecular compounds and aerosols. Due to the versatility of construction, processes not related to SCR, but involving three-phase reactions with gases, liquids and a catalyst, can also be investigated.
authors: Paul Scherrer Institute, 5232 Villigen PSI, Switzerland.
authors: D
authors: D
authors: Peitz
authors: A
authors: A
authors: Bernhard
authors: M
authors: M
authors: Elsener
authors: O
authors: O
authors: Kröcher