Multi-source alternative solids fuel line injector for introducing material from non-pressurized source to lean phase pneumatic transmission line and associated changing part

The multi-source alternative solids fuel line injector with a rotary airlock valve and pressure differential regulation system addresses the challenges of injecting ASF by ensuring consistent flow rates and reducing system wear, enhancing combustion efficiency and reducing maintenance.

WO2026132335A1PCT designated stage Publication Date: 2026-06-25FIVES PILLARD +1
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Patent Information

Authority / Receiving Office
WO · WO
Patent Type
Applications
Current Assignee / Owner
FIVES PILLARD
Filing Date
2025-12-18
Publication Date
2026-06-25

AI Technical Summary

Technical Problem

Existing inline injection systems for solid fuels in industrial burners face challenges with alternative solid fuels (ASF) due to their two-dimensional particle size, high surface moisture, and low bulk density, leading to agglomeration, incomplete ejection, and system damage, which affects consistent feed and combustion efficiency.

Method used

A multi-source alternative solids fuel line injector with a rotary airlock valve and pressure differential regulation system, comprising a rotor with airlock pockets and a connecting shaft, uses pressure differentials to ensure seamless injection of ASF with varying densities and moisture levels, minimizing air leakage and maintaining consistent flow rates.

Benefits of technology

The injector enables stable and efficient injection of ASF with bulk densities between 0.15 t/m² and 0.35 t/m², reducing system wear and maintenance, and ensuring consistent fuel supply to burners, thus optimizing combustion and minimizing operational costs.

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Abstract

The invention relates to a multi alternative solids fuel material line injector for introducing material from an unpressurized source to a lean phase pneumatic transport line (1), the injector comprising a rotary airlock valve (2) and a pressure differential regulation system, configured to create and adjust a chosen pressure differential ΔP between an upper part pressure Pa and a lower part pressure Pb of the connecting shaft (5) to set a suction force between the material accumulated in at least one airlock pocket (22) and an injection point (13) when said airlock pocket (22) is aligned with at least part of the injection point (13).
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