SNCR for Low NOx Emissions – Case Study of a Swedish Waste-to-Energy Plant –
All over the world people understand that reducing air pollution is essential to increase health and comfort of people. Nitrogen oxides (NOx) are among the main components of pollutants caused by combustion processes. It is toxic by direct contact and it causes acid rain.
Therefore, most governments regulate the emission of nitrogen oxides in flue gas from plants of all kind by law and/or financial incentives. NOx reduction by Selective Non Catalytic Reaction (SNCR) is next to the Selective Catalytic Reaction (SCR) the most common way to reduce NOx in flue gases.
During the past years, the efficiency of SNCR Technology could be increased in such a way that it is possible to reduce NOx by more than 70 percent in conventional Waste-to- Energy units. In addition, the application range of SNCR has been extended even for larger combustion plants due to ongoing developments. Today, it is one of the best available technologies for NOx control in many countries world-wide.
Within this paper, a new high performance SNCR application being installed at a Swedish Waste-to-Energy plant will be presented including operational experiences and lessons learnt due to the specifics of this plant.
| Copyright: | © TK Verlag - Fachverlag für Kreislaufwirtschaft | |
| Quelle: | Waste Management, Volume 5 (Dezember 2015) | |
| Seiten: | 14 | |
| Preis inkl. MwSt.: | € 0,00 | |
| Autor: | Dr.-Ing. Wolfgang Schüttenhelm  Philip Reynolds | |
| Artikel weiterleiten | Artikel kostenfrei anzeigen | Artikel kommentieren |
Diese Fachartikel könnten Sie auch interessieren:
Significance of and Challenges for Flue Gas Treatment Systems in Waste Incineration
© TK Verlag - Fachverlag für Kreislaufwirtschaft (9/2016)
Flue gas cleaning downstream of waste incineration plants had its origins in the increased construction and deployment of such plants to counter rising air pollution in the nineteen-sixties. Back then, the ever-growing burden on the environment caused lawmakers to start enacting emission limits for air pollution control. An unceasing series of environmental scandals and increasingly better analytical methods and measuring instrumentation led to a constant reduction of the emission limits and, consequently, to ongoing adjustment and further development of the necessary process stages in flue gas cleaning. As a result, today minimum emissions can be reached even under the challenging condition of deployment of a very inhomogeneous fuel (waste) and, hence, waste incineration today is no longer a key contributor to air pollution. Today, the need for flue gas cleaning is not called into doubt anymore and has long become a matter of course in the industry and in society at large. Apart from ensuring efficient elimination of noxious gases, the focus of today’s further developments is on issues such as energy efficiency, minimization of input materials and recovery and recycling of by-products from flue gas cleaning as valuable raw materials. These issues are also deemed to be key challenges, especially when it comes to selecting sites for new plants in such a manner that potential synergies can be exploited. Such aspects will also have to be considered in the plans for the predicted mega-cities of the future.
Neues aus der Rechtsprechung
© Rhombos Verlag (9/2008)
Bundesverwaltungsgericht zur Alternativenprüfung und Drittschutz von Grenz- und Kontrollwerten / EuGH zur Auslegung der AbfRRL
Flue Gas Treatment – State of the Art
© TK Verlag - Fachverlag für Kreislaufwirtschaft (12/2015)
For the removal of air pollutants from the flue gas, a flue gas treatment system is required downstream the boiler. Such treatment systems consist of a system of cleaning processes for the reduction of particulate, vapour and gaseous substances in the flue gas.
Einhaltung verschärfter NOx- und NH3-Grenzwerte bei bestehenden Anlagen
– Vorgehen und Lösungsansätze anhand von Praxisbeispielen –
© TK Verlag - Fachverlag für Kreislaufwirtschaft (1/2015)
Aufgrund der künftigen neuen bzw. verschärften Grenzwerte für Ammoniak und NOx besteht die Notwendigkeit zum Handeln für Betreiber von thermischen Abfallanlagen. Auch wirtschaftliche Gründe können zur Installation oder zur Ertüchtigung einer SNCR-Anlage mit erhöhter Performance führen. Ein großes Spektrum von Anpassungen steht dabei zur Verfügung, für das ERC Technik systematische Unterstützung bei der Konzept- und Entscheidungsfindung bis hin zur Umsetzung der Maßnahmen bietet.
Betriebserfahrungen nach über 30.000 Stunden der Thermischen Restabfallbehandlungsanlage Bitterfeld
© TK Verlag - Fachverlag für Kreislaufwirtschaft (1/2014)
Die Thermische Restabfallbehandlungsanlage (TRB) steht in dem 1.200 Hektar großen Chemiepark-Areal Bitterfeld-Wolfen. Die Anlage wurde im August 2009 planmäßig in Betrieb genommen.
