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<p>Tightening global environmental regulations, particularly in Russia, have made conventional gas-treatment technologies used in the glass industry, such as cyclones, bag filters, and electrostatic precipitators, inadequate. These systems effectively capture suspended particulates. However, they fail to provide the required removal efficiency for key gaseous pollutants such as NO<sub><i>x</i></sub>, SO<sub>2</sub>, and CO. This study develops and experimentally validates a high-efficiency integrated purification system that achieves 90 – 95% removal of gaseous contaminants and near-complete removal of particulate matter.</p><p>A reduction catalyst (20 cm<sup>3</sup> ) supported on mullite–silica fibers, composed entirely of domestic components, demonstrated 95% NO conversion at 350°C in a laboratory reactor. Acatalytic filtering element with a surface area of 0.02 m<sup>2</sup>, tested as part of a pilot-scale unit, achieved simultaneous high removal efficiencies for multiple pollutants: 92% for NO<sub><i>x</i></sub> and 96% for SO<sub>2</sub> at an operating temperature of 380°C. Based on these results, we propose a process chain for integrated flue-gas purification, which involves an acid-gas neutralization reactor, reagent-feeding units (lime, alkaline solution, and ammonia solution), an inertial separator, a block of ceramic catalytic filters, and storage silos for lime and spent sorbent.</p><p>The research was conducted using laboratory and pilot-scale equipment of the FKI-0.02T Kat system at NTC “Bakor.”</p>

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Ceramic Filter Systems for Integrated Purification of High-Temperature Flue Gases from Glass-Melting Furnaces

  • 期刊论文

  • 发表日期：

    2026年3月16日

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  • B. L. Krasny,
  • A. B. Krasny,
  • D. A. Serebryansky,
  • A. V. Sandin

摘要

Tightening global environmental regulations, particularly in Russia, have made conventional gas-treatment technologies used in the glass industry, such as cyclones, bag filters, and electrostatic precipitators, inadequate. These systems effectively capture suspended particulates. However, they fail to provide the required removal efficiency for key gaseous pollutants such as NOx, SO2, and CO. This study develops and experimentally validates a high-efficiency integrated purification system that achieves 90 – 95% removal of gaseous contaminants and near-complete removal of particulate matter.

A reduction catalyst (20 cm3 ) supported on mullite–silica fibers, composed entirely of domestic components, demonstrated 95% NO conversion at 350°C in a laboratory reactor. Acatalytic filtering element with a surface area of 0.02 m2, tested as part of a pilot-scale unit, achieved simultaneous high removal efficiencies for multiple pollutants: 92% for NOx and 96% for SO2 at an operating temperature of 380°C. Based on these results, we propose a process chain for integrated flue-gas purification, which involves an acid-gas neutralization reactor, reagent-feeding units (lime, alkaline solution, and ammonia solution), an inertial separator, a block of ceramic catalytic filters, and storage silos for lime and spent sorbent.

The research was conducted using laboratory and pilot-scale equipment of the FKI-0.02T Kat system at NTC “Bakor.”