期刊
BIOMASS & BIOENERGY
卷 79, 期 -, 页码 116-127出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.biombioe.2015.04.001
关键词
Biomass; Torrefaction; Dust; Explosion; Picea abies; Pinus palustris
资金
- Energy Program [EP/H048839/1]
- New Biomass Energy LLC
- Sea2Sky Energy UK Ltd
- EPSRC [EP/H048839/1] Funding Source: UKRI
- Engineering and Physical Sciences Research Council [EP/H048839/1] Funding Source: researchfish
Pre-treatments, such as torrefaction, can improve biomass fuels properties. Dedicated and coal co-firing plants, in which pulverised biomass and torrefied biomass can be used, are exposed to explosion hazards during handling, storage and transport from the mills to the boiler. Data on the explosion characteristics of biomass and torrefied biomass are scarce. This study presents explosion characteristics (maximum explosion pressure, deflagration index and minimum explosible concentration) of two torrefied wood samples and compares their reactivity to that of their corresponding untreated biomass materials and to a sample of Kellingley coal. Torrefied biomass samples showed higher reactivity, over-pressures were around 9 bar(0.9 MPa, 1 bar = 10(5) Pa) for all biomass samples irrespective of size or sample composition. Derived laminar burning velocities ranged between 0.1 -0.12 m s(-1), and were therefore similar to that of coal (0.12 m s(-1)). The differences in explosion reactivity influence the design of explosion protection measures and can be used to introduce suitable modifications for safe operations with torrefied biomass. (C) 2015 Elsevier Ltd. All rights reserved.
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