Dark emitters

EP4726258A3Pending Publication Date: 2026-06-24SCHWANK GMBH

Patent Information

Authority / Receiving Office
EP · EP
Patent Type
Applications
Current Assignee / Owner
SCHWANK GMBH
Filing Date
2021-12-10
Publication Date
2026-06-24

AI Technical Summary

Technical Problem

Existing radiant heaters emit pollutants such as carbon monoxide, carbon dioxide, and hydrocarbons due to incomplete combustion, despite efforts to achieve optimal stoichiometric ratios.

Method used

The use of hydrogen as the exclusive fuel source in a dark radiator, combined with a high air-fuel ratio and controlled mixing outside the blower, minimizes pollutant emissions by ensuring complete combustion and reducing flame temperature below nitrogen oxide formation limits.

Benefits of technology

This approach achieves reduced pollutant emissions while maintaining efficiency by utilizing hydrogen's high reactivity and controlled mixing, eliminating the need for flame flashback prevention mechanisms and minimizing thermal impairment.

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Abstract

The invention relates to a dark radiator, comprising a burner (1, 5, 6, 7), a blower (2) and a radiant tube (3) connected to an exhaust gas discharge line, wherein the burner (1) is connected to a fuel gas supply, wherein the blower (2) is configured to supply combustion air to the burner (1), wherein the burner (1) is configured to emit a flame into the radiant tube (3, 3'), and wherein the fuel gas supply is connected to a hydrogen source.
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