Paper details

Title:

Corrosion Relevant Properties of Flue Gas from Small Scale Wooden Biofuel Combustion

Author(s):

Schwabl, M., Schmidl, C., Haslinger, W., Wopienka, E., Humel, S., Voglauer, B.

Document(s):

Abstract:

The testing of metal chimney systems concerning their resistance against cold end corrosion is defined in the European normative EN 1856­1. In this normative hydrochloric acid and sulphur dioxide are considered as the main corrosion relevant species. The testing is conducted with flue gas from natural gas, oil and coal combustion. Wooden biofuels, however, are still not regarded. This work therefore states the basis for an adaption of the EN 1856­1 for flue gas from the wooden biofuel combustion. Flue gases from the combustion of six different fuels ­three pelletized fuels, one chipped fuel and two log wood fuels ­ in four different combustion systems, automatically and batch fed systems, are surveyed. The flue gas was condensed in an external Carbon heat exchanger and the retrieved condensate was analysed to corrosion relevant elements. An overall mass balance of chlorine and sulphur release was conducted to identify the pathway of these elements through the combustion process. These determinations showed that the combustion feeding has a strong influence on the emission of corrosion relevant elements. Batch fed systems showed a higher emission of hydrochloric acid and sulphur dioxide comparing to automatically fed systems.

Keywords:

biomass, chemical composition, corrosion, mass balance, small scale application, wood

Topic:

Biomass Conversion Technologies for Heating, Electricity and Chemicals                  

Subtopic:

Fuel and system characterisation

Event:

19th European Biomass Conference and Exhibition

Session:

OA7.3

Pages:

952 - 959

ISBN-13:

978-88-89407-55-4

ISBN-10:

88-89407-55-7

Paper DOI:

10.5071/19thEUBCE2011-OA7.3

Price:

FREE