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Simulation of microwave heating characteristics of activated carbon

  • Carbon Letters
  • Abbr : Carbon Lett.
  • 2025, 35(5), pp.2335~2348
  • DOI : 10.1007/s42823-025-00928-0
  • Publisher : Korean Carbon Society
  • Research Area : Natural Science > Natural Science General > Other Natural Sciences General
  • Received : January 17, 2025
  • Accepted : May 19, 2025
  • Published : December 11, 2025

Qiao Yulei 1 Chen Hang 1 Liu Sihan 1 Xia Anqi 1 Tian Yeshun 1 Wu Changliang 1 Zhang Xiuzhi 1 Feng Shuxia 1 Xia Xiao 1 Zhang Liqiang 1 Duan Guangbin 2

1University of Jinan
2National Engineering Laboratory for Reducing Emissions From Coal Combustion, Engineering Research Center of Environmental Thermal Technology of Ministry of Education, Shandong Key Laboratory of Energy Carbon Reduction and Resource Utilization, Jinan,

Accredited

ABSTRACT

To explore the heating characteristics of activated carbon in a microwave field, the effects of microwave irradiation power, the radius and physical properties of activated carbon, and a symmetrical waveguide on the heating characteristics of activated carbon in a microwave field were studied by experiments and simulation. This study distinguishes itself from previous works by focusing on high-power microwave heating (up to 800 W) and providing a comprehensive analysis of key parameters such as radius, thermal conductivity, magnetic conductivity, and dielectric constant. Additionally, the use of symmetrical waveguides and their impact on heating efficiency represents a novel contribution to the field of microwave-assisted flue gas desulfurization. According to the results, with the increase in microwave irradiation power, the heating rate of activated carbon in the microwave field increases, and the final temperature also rises. Waveguides significantly influence the heating characteristics of activated carbon. When multiple waveguides act on the same microwave field, electromagnetic waves interfere with each other and affect the distribution and intensity of the electromagnetic field. With an increase in the imaginary part of the relative permittivity, the real part of the relative magnetic permeability, and the thermal conductivity of the heated material, the heating characteristics of activated carbon in the microwave field are improved. This study provides a theoretical model for the heating characteristics and temperature distribution of activated carbon in a microwave field under high irradiation power.

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