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Recent Advances in Solid Fuel Conversion Technologies

A special issue of Energies (ISSN 1996-1073). This special issue belongs to the section "I: Energy Fundamentals and Conversion".

Deadline for manuscript submissions: closed (31 December 2023) | Viewed by 3122

Special Issue Editors

Advanced Research Institute of Multidisciplinary Sciences, Beijing Institute of Technology, Beijing, China
Interests: computational particle dynamics; sticking and spreading of droplets; particle deposition issues in a variety of engineering applications, from the ‘sky’ (turbomachinery) to the ‘ground’ (boilers/combustors); CFD modelling and uncertainty quantification; instrumentations for particle deposition

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Guest Editor
Energy 2050, Department of Mechanical Engineering, Faculty of Engineering, University of Sheffield, Sheffield S3 7RD, UK
Interests: clean and sustainable energy; industrial decarbonization and energy efficiency technology with a focus on multi-scale energy process computational and CFD modelling
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Guest Editor
Institute for Thermal Power Engineering, College of Energy Engineering, Zhejiang University, Hangzhou, China
Interests: thermoacoustic instability; coal combustion; coal slagging; porous media combustion; iron ore sintering; solar energy; molten salt CSP

Special Issue Information

Dear Colleagues,

Solid fuel conversion technologies, including coal and biomass, play an essential role in securing the world’s energy supply. Coal-fired power plants currently provide 35% of global electricity. In the short term, coal is still going to be one of the major energy sources, especially in developing countries. With growing concerns in environmental protection and global warming, there is an increased interest in advanced coal combustion technologies with low pollutant emissions (NOx, particulate matter, etc.), oxy-fuel coal combustion, the chemical looping combustion of coal, as well as advanced coal gasification technologies. In the long term, coal is going to be partially replaced by renewable energy, especially biomass, which may be considered carbon neutral. Through integrating with low carbon fuel conversion technologies (oxy-fuel combustion, chemical looping combustion, etc.), firing biomass has the potential to achieve negative net CO2 emissions. Therefore, these advanced biomass conversion technologies are attractive approaches for the removal of CO2 from the atmosphere and to help meet the stringent world carbon emission budgets. Researchers are contributing their efforts towards achieving flame stability, improving energy conversion efficiency, and retrofitting heat transfer and controlling pollutant emissions in order to make these advanced technologies technically feasible. Since biomass fuel may contain high amounts of inorganic matter, especially potassium and chlorine, ash-related issues (slagging, fouling, and corrosion) are believed to be one of the major operation issues for biomass combustion and gasification. Therefore, understanding and controlling ash-related issues is of great importance for these technologies.

This Special Issue focuses on recent advances in both experimental and numerical investigations of solid fuel conversion technologies, inviting original research papers as well as literature reviews. The topics of interest for this Special Issue include (but are not limited to):

  • Coal combustion and biomass combustion;
  • Low pollutant emissions;
  • Advanced fuel conversion technologies (oxy-fuel combustion, chemical looping combustion, gasification, etc.);
  • Experimental and modelling of solid fuel conversion processes;
  • Lab-scale, pilot-scale, and full-scale (industrial) investigations;
  • Flame stability and radiation heat transfer;
  • Slagging, fouling, and corrosion.

Dr. Xin Yang
Prof. Dr. Lin Ma
Prof. Dr. Hao Zhou
Guest Editors

Manuscript Submission Information

Manuscripts should be submitted online at www.mdpi.com by registering and logging in to this website. Once you are registered, click here to go to the submission form. Manuscripts can be submitted until the deadline. All submissions that pass pre-check are peer-reviewed. Accepted papers will be published continuously in the journal (as soon as accepted) and will be listed together on the special issue website. Research articles, review articles as well as short communications are invited. For planned papers, a title and short abstract (about 100 words) can be sent to the Editorial Office for announcement on this website.

Submitted manuscripts should not have been published previously, nor be under consideration for publication elsewhere (except conference proceedings papers). All manuscripts are thoroughly refereed through a single-blind peer-review process. A guide for authors and other relevant information for submission of manuscripts is available on the Instructions for Authors page. Energies is an international peer-reviewed open access semimonthly journal published by MDPI.

Please visit the Instructions for Authors page before submitting a manuscript. The Article Processing Charge (APC) for publication in this open access journal is 2600 CHF (Swiss Francs). Submitted papers should be well formatted and use good English. Authors may use MDPI's English editing service prior to publication or during author revisions.

Keywords

  • solid fuel combustion
  • oxy-fuel combustion
  • chemical looping combustion
  • pollutant emissions
  • flame stability
  • radiative heat transfer
  • slagging, fouling, and ash deposition
  • corrosion
  • CFD modelling

Published Papers (1 paper)

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Research

25 pages, 8298 KiB  
Article
A Recycling Pathway for Rare Earth Metals (REMs) from E-Waste through Co-Gasification with Biomass
by A. S. M. Sazzad Parveg, Ramin Ordikhani-Seyedlar, Tejasvi Sharma, Scott K. Shaw and Albert Ratner
Energies 2022, 15(23), 9141; https://doi.org/10.3390/en15239141 - 2 Dec 2022
Cited by 1 | Viewed by 2453
Abstract
This manuscript investigates an improvised gasification process for capturing and recycling rare earth metals (REMs) from consumer and industrial electronic wastes, often termed “e-waste”. The proposed procedure is based on the formation of coalesced and aggregated metal nodules on biochar surfaces through the [...] Read more.
This manuscript investigates an improvised gasification process for capturing and recycling rare earth metals (REMs) from consumer and industrial electronic wastes, often termed “e-waste”. The proposed procedure is based on the formation of coalesced and aggregated metal nodules on biochar surfaces through the gasification of e-waste mixed with gasifier feedstocks. A preliminary understanding of metal nodule formation based on different atmospheric conditions (inert, oxidizing, and oxidizing followed by reducing atmospheres) was examined in both pilot-scale gasifier and tube furnace experiments using iron powder mixed with corn. Iron powder is representative of the REM in the e-waste. Metal nodule sizes, morphology, and composition are analyzed and compared via scanning electron microscopy (SEM), energy dispersive X-ray spectroscopy (EDS), and X-ray fluorescence spectroscopy (XRF) techniques. We conclude that sintering is the key mechanism responsible for metal nodule growth through metal particle coalescence and aggregation by migration and diffusion of metal particles on biochar surfaces at elevated temperatures. Oxidizing atmosphere followed by a reducing atmosphere facilitates larger metal nodule growth compared to only an inert or oxidizing atmosphere. Additionally, the effect of adding NaCl salt is investigated on lowering the metal nodules’ surface energy and enhancing both metal particle and metal nodule agglomeration characteristics. Salt addition facilitates spherical metal nodule formation without any significant effect on the nodule composition and localized formation of nodules. Full article
(This article belongs to the Special Issue Recent Advances in Solid Fuel Conversion Technologies)
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