Title:
Upgrade of Biofuel Incinerators for Meeting Stringent Emission Requirements on Nox, Dust and Nh3
Author(s):
Rämisch, S., Ebert, J.
Document(s):
Paper
Abstract:
Emission regulations throughout the world continue to tighten, creating technical and economic challenges for various industries. Europe is focusing aggressively on reducing Nitrogen Oxides (NOx) and PM emissions, covering various kinds of industrial sectors. Innovative new technologies are being developed and introduced to meet proposed emissions levels for industries such as waste or biofuel to energy facilities, Cement clinker producers and Sintering processes. In ‘biomass’ incineration, the filter ashes can vary from an easy handling up to very challenging properties such as from animal deriving fuels. Catalytically active ceramic or textile filter media have been applied over the past 15 years ensuring a simultaneous removal of PM and PCDD/F-compounds. A new textile filter type containing 2 filter bags has recently been designed for a multi-functional approach at elevated filter temperatures (T>170°C) where PMs are filtered on an ePTFE membrane (1st layer) and NOx is reduced by a catalytic reaction (2nd layer) with NH3 injected upstream down to emission levels of NOx<50mg/Nm³ with NH3<10mg/Nm³ (at 11Vol%O2). The highly PCDD/F destruction has also been proven. The innovative bag construction enables the removal of the catalytic inner bag once it has been deactivated by ammonium-(bi)-sulphates. An appropriate regeneration process outside the bagfilter was developed for such new DeNOx system. This paper presents concepts for PM filtration in challenging biofuel applications as well as concepts for plant upgrades with regard to lowest NOx/NH3 and PM emission, especially in countries with significant NOx charges for industrial emitters.
Keywords:
membrane, filter, NOx, PCDD/F
Topic:
R&D on Biomass Conversion Technologies for Heating, Electricity and Chemicals
Subtopic:
Solid biofuel combustion for small and medium scale applications
Event:
21st European Biomass Conference and Exhibition
Session:
2CO.10.3
Pages:
602 - 607
ISBN:
978-88-89407-53-0
Paper DOI:
10.5071/21stEUBCE2013-2CO.10.3
Price:
FREE
