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Energies
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Research on Thermo-Chemical Conversion Processes
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Research on Thermo-Chemical Conversion Processes

A special issue of Energies (ISSN 1996-1073). This special issue belongs to the section "A4: Bio-Energy".

Deadline for manuscript submissions: closed (10 March 2023) | Viewed by 2966

Special Issue Editor

Dr. Qian Mao

E-Mail Website
Guest Editor
Institute of Technology for Nanostructures, University Duisburg-Essen, 47057 Duisburg, Germany
Interests: fuel chemistry kinetics; particulates for-mation, propulsion, and catalytic reaction; quantum chemistry, chemical kinetics, and molecular dynamics simulations for the energy and combustion field

Special Issue Information

Dear Colleagues,

The thermochemical conversion process is of great importance in energy generation and utilization. It involves the utilization of heat to desired chemicals or fuels and normally includes combustion, pyrolysis, liquefaction, and gasification. Significant advances in this field have been achieved recently including process and device design, in situ diagnostics, numerical modeling, etc. To reduce the carbon emission and meet the carbon neutrality, it is of great demand in the clean energy generation, conversion, and utilization. This Special Issue of “Research on Thermo-Chemical Conversion Processes” aims to present recent progresses and advances in the field of thermo-chemical conversion processes from experiment, theory, and modelling aspects. Topics include but are not limited to:

  • Characterization of thermo-chemical behavior of traditional fuels and biomass
  • Development of kinetic mechanism model for thermo-chemical conversion processes.
  • Optimization of thermos-chemical conversion processes
  • Advanced in diagnostic methods for thermos-chemical conversion processes.
  • Progress in the generation of renewable energy.
  • Carbon footprint assessment methodology development in thermos-chemical conversion.

Dr. Qian Mao
Guest Editor

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

  • Advanced thermo-chemical conversion technology
  • Diagnostics technique
  • Numerical modelling
  • Chemical kinetics
  • Combustion
  • Pyrolysis
  • Biomass
  • E-fuel

Published Papers (2 papers)

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Research

17 pages, 2856 KiB  
Article
Aspects Regarding the Modelling and Optimization of the Transesterification Process through Temperature Control of the Chemical Reactor
by Ruxandra-Cristina Stanescu, Cristian-Ioan Leahu and Adrian Soica
Energies 2023, 16(6), 2883; https://doi.org/10.3390/en16062883 - 21 Mar 2023
Cited by 2 | Viewed by 1407
Abstract
Currently, biofuels represent a solution for the European Union in the transportation sector in order to reduce the greenhouse gas (GHG) emissions and the dependency of fossil fuels. Biodiesel from vegetable oils is a solution for countries with low GDP per capita to [...] Read more.
Currently, biofuels represent a solution for the European Union in the transportation sector in order to reduce the greenhouse gas (GHG) emissions and the dependency of fossil fuels. Biodiesel from vegetable oils is a solution for countries with low GDP per capita to strengthen the internal agriculture, provide jobs, and reduce the use of fossil fuels. In this study, we model and simulate a temperature regulator designed for the biodiesel transesterification process in a discontinuous batch reactor, using methanol and a homogenous basic catalyst. The simulation was based on the kinetical model of the transesterification reaction and the mathematical model of the reactor. We considered molar ratios of alcohol/oil of 6:1 and 9:1, respectively, to shift the reaction equilibrium towards the production of fatty acid methyl esters. In the design of the simulation, the methanol boiling point was considered a restriction, therefore, temperatures below 65 °C were imposed. The results demonstrate that the increase in temperature results in a decrease in the reaction time and a higher yield, especially for the 6:1 molar ratio reaction, and that the optimum temperature for the batch reactor is of 60 °C. Automatic control improves the performance and costs of production. Full article
(This article belongs to the Special Issue Research on Thermo-Chemical Conversion Processes)
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11 pages, 2054 KiB  
Article
Investigating the Influence of Pore Shape on Shale Gas Recovery with CO2 Injection Using Molecular Simulation
by Juan Zhou, Shiwang Gao, Lianbo Liu, Tieya Jing, Qian Mao, Mingyu Zhu, Wentao Zhao, Bingxiao Du, Xu Zhang and Yuling Shen
Energies 2023, 16(3), 1529; https://doi.org/10.3390/en16031529 - 3 Feb 2023
Viewed by 1233
Abstract
Carbon-dioxide-enhanced shale gas recovery technology has significant potential for large-scale emissions reduction and can help achieve carbon neutrality targets. Previous theoretical studies mainly focused on gas adsorption in one-dimensional pores without considering the influence from the pore geometry. This study evaluates the effects [...] Read more.
Carbon-dioxide-enhanced shale gas recovery technology has significant potential for large-scale emissions reduction and can help achieve carbon neutrality targets. Previous theoretical studies mainly focused on gas adsorption in one-dimensional pores without considering the influence from the pore geometry. This study evaluates the effects of pore shape on shale gas adsorption. The pure and competitive gas adsorption processes of CO2 and CH4 in nanopores were investigated using molecular simulations to improve the prediction of shale gas recovery efficiency. Meanwhile, quantitative analysis was conducted on the effects of the pore shape on the CO2-EGR efficiency. The results indicate that the density of the adsorption layer in pores is equally distributed in the axial direction when the cone angle is zero; however, when the cone angle is greater than zero, the density of the adsorption layer decreases. Smaller cone-angle pores have stronger gas adsorption affinities, making it challenging to recover the adsorbed CH4 during the pressure drawdown process. Concurrently, this makes the CO2 injection method, based on competitive adsorption, efficient. For pores with larger cone angles, the volume occupied by the free gas is larger; thus, the pressure drawdown method displays relatively high recovery efficiency. Full article
(This article belongs to the Special Issue Research on Thermo-Chemical Conversion Processes)
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