Abstract
The use of existing coal feeding system for the input of the crushed biomass to the energy boiler requires the least expenditures to start and run a multi-fuel combustion installation. And if losing popularity technology of co-firing biomass with coal is intended to allow meeting Polish promises to achieve the 15% share of renewable energy sources in the energy mix by the year 2020, such approach could be expected rather than construction of new, dedicated multi-fuel installations to produce electricity and heat. However, this involves the significant increase of fire and explosion hazard in the coaling system - designed for work with coal, a material with much better parameters characterizing this hazard, than biomass. The article presents the standardized research techniques (applied test stands and methodology) used to determine the data necessary for the design and the application of appropriate measures to reduce fire and explosion hazard related to operation of a mix of coal and biomass.
Highlights
The basic rules for the prevention of explosion and explosion protection include avoiding explosive atmospheres, avoiding any possible effective sources of ignition and limiting the effects of an explosion to an acceptable level [1, 2].Correct assessment of the explosion hazard in accordance with [3] and the selection of appropriate preventive and protective measures requires the determination of the properties of a mixture of a combustible substance with air, informing about the possibility of starting the explosion and behaviour of substances during combustion
Determination of the minimum ignition temperature of dusty explosive atmosphere is carried out according to the standard [7], method B: cloud of dust in a constant temperature furnace
Determination of the minimum ignition temperature of the dust layer is carried out according to the standard [7], method A
Summary
The basic rules for the prevention of explosion and explosion protection include avoiding explosive atmospheres, avoiding any possible effective sources of ignition and limiting the effects of an explosion to an acceptable level [1, 2].
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