Refractory inlay and checker brick system for a regenerator

The refractory inlay for refractory checker bricks addresses clogging issues by enabling adjustable channel widths and improved heat transfer, enhancing regenerator efficiency and reducing dust deposition.

WO2026077622A1 Publication Date: 2026-04-16REFRACTORY INTELLECTUAL PROPERTY GMBH & CO KG
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Patent Information

Application Number
PCT/EP2025/075448
Authority / Receiving Office
WO · WO
Patent Type
Applications
Current Assignee / Owner
Priority Date
2024-10-07
Filing Date
2025-09-08
Publication Date
2026-04-16

AI Technical Summary

Technical Problem

Existing regenerators face issues with clogging due to dust and chemical deposits in channels, particularly in colder areas, which affects heat recovery efficiency and structural integrity, as fixed channel widths cannot be easily adjusted.

Method used

A refractory inlay for refractory checker bricks that allows adjustable channel width through a refractory inlay body with grooves and beveled surfaces, enhancing heat transfer and reducing deposition, integrated with refractory checker bricks to form a stable checkerwork structure.

Benefits of technology

The solution effectively reduces clogging and enhances heat transfer efficiency by allowing adjustable channel widths, improving gas flow and reducing dust deposition, while maintaining structural integrity.

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Abstract

Refractory inlay (1) for a refractory checker brick (2, 2.1, 2.2, 2.3) of a vertical regenerator (3), the refractory inlay (1) comprising a refractory inlay body (10), the refractory inlay body (10) comprising a refractory inlay body top surface (10t) and a refractory inlay body bottom surface (10b); a refractory inlay body front surface (10f) and a refractory inlay body rear surface (10r); a refractory inlay body first side surface (10.1) and a refractory inlay body second side surface (10.2); at least two refractory inlay shafts (11,12), namely a first refractory inlay shaft (11) and a second refractory inlay shaft (12), each refractory inlay shaft (11,12) comprising a refractory inlay shaft top surface (11t, 12t) and a refractory inlay shaft bottom surface (11b, 12b); a refractory inlay shaft front surface (11f, 12f) and a refractory inlay shaft rear surface (11r, 12r); a refractory inlay shaft first side surface (11.1, 12.1) and a refractory inlay shaft second side surface (11.2, 12.2); wherein the refractory inlay shaft second side surface (11.2) of the first refractory inlay shaft (11) is connected to the refractory inlay body first side surface (10.1); wherein the refractory inlay shaft first side surface (12.1) of the second refractory inlay shaft (12) is connected to the refractory inlay body second side surface (10.2); wherein the refractory inlay shaft bottom surfaces (11b, 12b) of the first refractory inlay shaft (11) and the second refractory inlay shaft (12) are configured to be suspended on a refractory checker brick top surface (2t) of a refractory checker brick (2), wherein the refractory inlay body front surface (10f) and / or the refractory inlay body rear surface (10r) comprise grooves (10g).
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