Coal devolatilization and hydrogastification

Abstract

a Mineral-mptter-free C and total organic H (that is, including H + Co 11s-moist, mineral-matter-free; cokes-dry, ash-free; 1 kcal/g = bound with 0, S, and N). SCOPEThe formation of hydrates from pure n-butane with water has never been confirmed, and the literature con-Correspondence concerning this paper should be addressed to Donald B. Robinson.tains conflicting opinions on the role of n-butane in hydrate formation from mixtures. T h e object of fie work undertaken in this study was to obtain new experimental

Distributed activation energy modelling for pyrolysis of forest waste using Gaussian distribution

“…70 (2016) (Vand, 1943) and it was adopted in coal the devolatilisation problem by Pitt (Pitt, 1962). Later, the model was used by Hanbaba and his co-worker (Hanbaba et al, 1968), and Anthony and Howard (1976) in their work. The model postulates that the decomposition mechanism takes a large number of independent, parallel, and the first order chemical reactions with different activation energies exhibiting variation in the bond strength of constituent species of biomass.…”

Kinetic Parameters for the Thermal Decomposition of Forest Waste Using Distributed Activation Energy Model (DAEM)

“…Pitt [15] used it for coal devolatilisation problems. Later on adopted by Hanbaba and his co-workers [16] and Anthony [17], [18]. The model assumes that the decomposition mechanism requires a multi-step, independent, parallel and the first order chemical reactions which has different activation energies and reflects variations in the strengths of components of biomass.…”

Double Distribution Activation Energy Model as Suitable Tool in Explaining Biomass and Coal Pyrolysis Behavior

“…The DAEM assumes that a series of first-order parallel reactions occurs, sharing the same pre-exponential factor and characterized by a continuous distribution of the activation energies, In the literature different forms of activation energy distribution can be found: Gaussian [11], Weibull [12] or Gamma [13] distributions; in this study the Gaussian one was adopted.…”