Refractory tile system for boiler tube/heat exchanger
US6267066A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Mar 15, 2000 |
| Grant date | Jul 31, 2001 |
| Priority date | — |
| Expiry date | Mar 15, 2020 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF23M2900/05004
- WIPO fieldThermal processes and apparatus
- WIPO sectorMechanical engineering
Abstract
A refractory tile system includes a barrier layer coating applied to the wall (membrane and waterwall or tube wall) of a boiler of an incinerator or heat exchanger. Refractory tiles are then fastened to the tube wall utilizing a floating attachment mechanism to provide a relatively high degree of freedom of movement relative to the tube wall to accommodate micro-scale bowing of the tile generated by the relatively large temperature gradient and mean temperature typically experienced by such tiles. Each tile is also effectively isolated from adjacent tiles by providing a predetermined gap therebetween of sufficient size to effectively prevent macro-scale bowing generated by networking thereof. Moreover, a compressible fibrous mortar is preferably disposed in the gap or channel between each adjacent tile to substantially prevent ash or other contaminants from passing therethrough. The gaps or channels between the adjacent tiles are sized in combination with the known compressibility of a particular compressible mortar selected, so as to prevent macro-scaled bowing from occurring when the tiles are disposed in their maximum micro-scale bowed condition.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.