Published at Energy Conversion and managaement – Design and performance study on a novel solar moving-bed pyrolysis reactor for waste salt treatment

<p><a href="https://www.solarpaces.org/wp-content/uploads/2026/03/j.png"><img alt="" class="alignnone size-full wp-image-30340" height="344" src="https://www.solarpaces.org/wp-content/uploads/2026/03/j.png" width="750" /></a><br />
<strong>Abstract:</strong><br />
Industrial waste salts with organic impurities require eco-friendly treatment. Conventional pyrolysis relies on fossil fuels, however, concentrated solar energy offers a clean alternative. This study proposes a novel solar moving-bed pyrolysis reactor for purifying waste salt that combines a planar mirror with a parabolic trough concentrator to enable continuous solar irradiation of a vertical moving-bed reactor. The reactor effectively pyrolyzes organic impurities, achieving a final residual ratio below 0.02, while reactor rotation reduces the circumferential temperature difference to 50 K. Seasonal analysis determined optimal flow rates, resulting in a daily processing capacity of 82.66 kg/d in summer 96 % higher than in winter (42.17 kg/d). Furthermore, A 200 K increase in inlet temperature raised daily capacity by 39.06 %; accordingly, an integrated waste heat recovery system was designed and optimized, further enhancing the daily capacity by up to 40.63 %. This work demonstrates the viability of solar-driven pyrolysis for waste salt purification and highlights the importance of operational optimization for industrial solar thermal applications.</p>
<p><em><strong>Z.J. Dong, H. Ye, W.J. Yan, Y.B. Tao, Design and performance study on a novel solar moving-bed pyrolysis reactor for waste salt treatment, Energy Conversion and Management, Volume 348, Part C,</strong></em><br />
<em><strong>2026, 120748, ISSN 0196-8904, <a href="https://doi.org/10.1016/j.enconman.2025.120748" rel="noopener" target="_blank">https://doi.org/10.1016/j.enconman.2025.120748</a></strong></em></p>
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