Analysis of Micronized Charcoal for Use in a Liquid Fuel Slurry

Abstract

Yellow poplar (Liriodendron tulipifera) was chosen as the woody biomass for the production of charcoal for use in a liquid fuel slurry. Charcoal produced from this biomass resulted in a highly porous structure similar to the parent material. Micronized particles were produced from this charcoal using a multi-step milling process and verified using a scanning electron microscope and laser diffraction system. Charcoal particles greater than 50 µm exhibited long needle shapes much like the parent biomass while particles less than 50 µm were produced with aspect ratios closer to unity. Laser diffraction measurements indicated D10, D50, and D90 values of 4.446 µm, 15.83 µm, and 39.69 µm, respectively. Moisture content, ash content, absolute density, and energy content values were also measured for the charcoal particles produced. Calculated volumetric energy density values for the charcoal particles exceeded the No. 2 diesel fuel that would be displaced in a liquid fuel slurry.

Spraying of Composite Liquid Fuels Based on Types of Coal Preparation Waste: Current Problems and Achievements: Review

“…CLF are normally injected into the combustion chambers of power plants using injectors similar to those used for atomizing conventional liquid fuels. However, due to the rheological, thermophysical, and chemical characteristics of fuel suspensions, the use of standard atomization systems poses certain difficulties [6,16,17]. Efficient injection into the combustion chamber while minimizing clogging phenomena is one of the most important problems that emerge when using composite liquid fuels [18].…”

“…The most popular solid combustible components are coals [11][12][13]39,40] and their derivatives (sludge, filter cake, middlings, semi-coke) [6,9,41]. Peats, solid carbon-containing industrial waste (for example, tire pyrolysis residues) [7], and organic components (sawdust, nutshells and husks, dried algae) [16,17,[42][43][44] can also be successfully utilized in the energy sector as part of CLFs. The most common liquid combustible components include: waste and base oils derived from petroleum (motor, turbine, compressor oils, etc.)…”

“…The most common liquid combustible components include: waste and base oils derived from petroleum (motor, turbine, compressor oils, etc.) [23,33], alcohols [39,45], liquid pyrolysis products, oil sludge and heavy oil [6,10], vegetable oils (including cooking oils), and biodiesel [16,17,42].…”

Biomass Chars: Elaboration, Characterization and Applications

“…Long and Boyette [4] have chosen Yellow poplar (Liriodendron tulipifera) as the woody biomass for the production of charcoal for use in a liquid fuel slurry. Charcoal produced from this biomass resulted in a highly porous structure similar to the parent material.…”

“…This book contains the successful invited submissions [1][2][3][4][5][6][7][8][9][10][11][12][13][14][15] to a Special Issue of Energies on the subject area of "Biomass Chars: Elaboration, Characterization, and Applications". The invited editors have decided to focus the Special Issue on the specific topic of biomass transformation and use.…”