Diffusion combustion type dual fuel burner and method for controlling its flame length

The dual fuel burner system with adjustable nozzles and a controller maintains consistent flame length by dynamically adjusting fuel ratios, addressing fluctuation issues and ensuring stable combustion in furnaces.

JP7875713B2Active Publication Date: 2026-06-18KAWASAKI JUKOGYO KK
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Patent Information

Authority / Receiving Office
JP · JP
Patent Type
Patents
Current Assignee / Owner
KAWASAKI JUKOGYO KK
Filing Date
2022-04-21
Publication Date
2026-06-18

AI Technical Summary

⚠Technical Problem

Dual-fuel burners using liquid fuel and hydrogen gas fuel experience fluctuating flame lengths due to varying mixing ratios, which can interfere with combustion furnaces and require precise control to maintain appropriate flame lengths.

⚗Method used

A dual fuel burner system with adjustable nozzles and a controller that measures flame length and adjusts the fuel and combustion-supporting gas flow rates to maintain the flame within a desired range by modifying the mixing ratio of liquid fuel and hydrogen gas fuel.

🎯Benefits of technology

The system effectively controls flame length, preventing interference with furnace walls and ensuring consistent operation by dynamically adjusting fuel ratios to match the furnace's requirements.

✦ Generated by Eureka AI based on patent content.

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Patent Text Reader

Abstract

To provide a dual fuel burner of liquid fuel and hydrogen gas fuel capable of controlling a flame length.SOLUTION: Provided is a diffusion-combustion dual fuel burner, including: a liquid fuel nozzle for jetting liquid fuel at a liquid fuel jetting flow rate; a hydrogen gas fuel nozzle for jetting hydrogen gas fuel at a gas fuel jetting flow rate; a combustion supporting gas nozzle for supplying combustion supporting gas; a liquid fuel adjusting device for adjusting a gas fuel jet flow rate; a gas fuel adjusting device for adjusting a liquid fuel jet flow rate; a controller; and a flame length measuring instrument for measuring a flame length. The controller acquires the flame length measured by the flame length measuring instrument, and when the flame length is out of a given proper flame length range, corrects the present mixed combustion ratio of the liquid fuel and the hydrogen gas fuel to make the flame length to be within the proper flame length range, and causes the liquid fuel adjusting device and the gas fuel adjusting device to operate such that the liquid fuel and the hydrogen gas fuel combust at the corrected mixed combustion ratio.SELECTED DRAWING: Figure 1
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