A continuous system and method for solar driven biomass refining coupled with sulfur-containing flue gas desulfurization to produce sulfuric acid

By using a solar-driven photochemical iodine cycle mechanism, the problem of I-reagent regeneration in the biomass production of 5-methylfurfural or its mixture with furfural, which depends on the addition of an external chemical reducing agent, has been solved. This achieves the triple goals of efficient, safe, and low-carbon biomass conversion and flue gas desulfurization to produce sulfuric acid, thereby improving the efficiency and economy of light energy utilization.

CN122273431APending Publication Date: 2026-06-26HUBEI UNIV +1
View PDF 1 Cites 0 Cited by

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
HUBEI UNIV
Filing Date
2026-04-16
Publication Date
2026-06-26

AI Technical Summary

Technical Problem

In existing technologies for producing 5-methylfurfural or mixtures thereof from biomass, the regeneration of the I-reagent relies on the addition of external chemical reducing agents and precious metal catalysts, which poses safety risks and high costs. Furthermore, the photochemical regeneration efficiency is low, and industrialization feasibility is lacking.

Method used

A solar-driven photochemical iodine cycle mechanism is adopted, which uses a dual-channel photocatalytic membrane reaction module to photocatalytically reduce I2 and/or I3- to I- and photocatalytically oxidize SO2 to sulfuric acid, thereby realizing the in-situ regeneration of iodine reagent and the resource utilization of sulfur pollutants in flue gas. The low-potential SOR is used to replace the high-energy-consuming OER as the photogenerated hole consumption pathway.

Benefits of technology

It has achieved green synthesis of high-value biomass chemicals, efficient recycling of iodine reagents, and resource-based sulfuric acid production from flue gas sulfur pollutants, improving the efficiency of light energy utilization, reducing safety risks and costs, and realizing clean and low-carbon production throughout the entire process.

✦ Generated by Eureka AI based on patent content.

Smart Images

  • Figure CN122273431A_ABST
    Figure CN122273431A_ABST
Patent Text Reader

Abstract

This invention belongs to the interdisciplinary technical field of solar energy utilization technology, biomass chemical engineering, and synergistic treatment of flue gas pollution. Specifically, it relates to a continuous system and method for solar-driven biomass refining coupled with sulfur-containing flue gas desulfurization to produce sulfuric acid. The system includes a solar thermochemical conversion and separation module, a dual-channel photocatalytic membrane reaction module, and a flue gas treatment and sulfuric acid concentration module. Sugar-containing biomass, driven by solar thermal energy, undergoes sulfur-containing flue gas desulfurization to produce sulfuric acid without the addition of external hydrogen or precious metal catalysts. ‑ The acidic aqueous solution reacts to convert it into 5-methylfurfural or a mixture of it and furfural, and I ‑ Converted to I2 and / or I3 ‑ Contains I2 and / or I3 ‑ The aqueous phase enters the reduction channel of the dual-channel photocatalytic membrane reaction module and is catalytically reduced and regenerated into I under the drive of sunlight. ‑ The process is then recycled back to the conversion step; simultaneously, sulfur dioxide and / or its water-absorbed state in the sulfur-containing flue gas are photocatalytically oxidized to sulfuric acid in the oxidation channel of this module.
Need to check novelty before this filing date? Find Prior Art