Experiments and modeling of SNCR process in a cyclone reactor

Casper Stryhn Svith, David Brandes, Hao Wu, Weigang Lin, Kim Dam-Johansen

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In this study, the SNCR process was investigated in a pilot scale cyclone reactor by experiments and modeling. Experiments were conducted under different conditions, with inlet gas temperatures of 850-1100 °C, inlet gas velocities of 12-15 m/s, NH3/NO feed molar ratios of 0-7, and with and without particle loading. NOx reduction, ammonia slip, temperature, and concentration profiles inside the cyclone were measured. With a NO inlet concentration of 500 ppm, 90% NO reduction was achieved at inlet temperatures of 900-1000 °C and a NH3/NO ratio of approximately 3, but with ammonia slips of 150-300ppm. Measurements showed that the NO reduction took place mainly in the cyclone inlet, while ammonia converted further inside the cyclone, even in zones with temperatures significantly lower than the typicalSNCR window. The system was modeled by reactor network models using detailed kinetics, and a modelthat could describe the internal concentration profiles was developed.
Original languageEnglish
Publication date2019
Number of pages1
Publication statusPublished - 2019
EventNordic Flame Days 2019 - Turku, Finland
Duration: 28 Aug 201929 Aug 2019


ConferenceNordic Flame Days 2019


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  • Nordic Flame Days 2019

    Casper Stryhn Svith (Organizer)

    28 Aug 2019

    Activity: Attending an eventParticipating in or organising workshops, courses, seminars etc.


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