Prefired Module
- 1. PREFIRED MODULE The Detrick prefired module is a composite lining system for industrial furnaces and kilns. It has very low thermal conductivity and low heat storage. The system has been installed in over one thousand furnaces worldwide, and has proven long term performance and reliability. It can be used at temperatures up to 1575°C. The system is based on a prefired vacuum formed five sided box which is filled with bulk insulation. The standard module is edged on two adjacent sides with Demex felt to seal against the next mod- ule. The standard size is 450mm by 300mm, in thicknesses between 100mm and 300mm. The prefired module system performs better and lasts longer than most other systems. High cost components are used where they give the greatest benefit to the user. For over eighty years the Detrick commitment to sound refractory engineering has ensured that our systems are practical and efficient. This is achieved through thorough design, careful selection and testing of materials, establishment of failsafe installation procedures and on-going technical support.
- 2. PERFORMANCE Prefired Modules use lower thermal conductivity materials in the hottest zones. Materials are orientated so that their anisotropic properties work to reduce heat transfer. For the same hotface temperature and thickness the prefired module will give a lower coldface temperature than conventional modules. Materials have a low density so that little energy is wasted during thermal cycling. The modules are prefired to remove shrinkage so that these properties are maintained throughout their life. INSTALLATION Prefired modules are fast and pleasant to install, casings can be prestudded, or studs can be applied as each module is placed. Wide tolerances on the vertical position of the anchor mean that casing faults can often be avoided. The module surface is bonded leading to very little dust being produced during handling. ANCHORAGE The proven anchor system is based on heavy duty clips cut and bent from heat resisting stainless steel plate. The anchors are located in a protected position and are fixed to the furnace shell by fail safe break-off studs, or bolt through screw sets. All welds can be visually and mechanically checked. LOW MAINTENANCE The bonded surface of the module resists gas erosion more than conventional module or blanket linings. The blocks are designed not to shrink in service so that costly resteming and short term maintenance are reduced or eliminated,
- 4. THE DETRICK PREFIRED MODULE M.H.Detrick Company Ltd, Unit 2, 11 Glebe Road, East Gillibrands, Skelmersdale. WN8 9JP Tel: +44 (0) 1695 455574/6 Fax: 0800 066 4062 Email: sales@mhdetrick.co.uk web: www.mhdetrick.co.uk DETRICK PRODUCTS: SUSPENDED CONSTRUCTIONS PREFIRED MODULES BLANKETS MODULES VACUUM FORMED SHAPES BOARD & BLANKETS INSULATING FIREBRICKS DESIGN FLEXIBILITY Every aspect of the system is flexible. Component qualities can be selected for temperatures up to 1575°C, and to resist specific furnace conditions. The anchor quality can be varied to give optimum creep and corrosion resistance. Modules can be supplied with their side walls angled to fit circular casings. Special shapes can be built into the lining to perform specific functions including burner blocks, peepsites, damper ports and bull-noses. Coatings can be applied to the module surface to resist hostile chemical or mechanical environments, and to enhance radiant heat transfer within the furnace. A blanket sealing layer can be installed between modules and casing to protect steelwork in the event of mechanical damage, and to absorb casing deformities. An aluminium or stainless steel Vapour Barrier can be incorporated to deal with corrosive atmospheres. ZONE ENGINEERING Prefired modules can be used in differing grades and in combination with other systems to provide the best cost benefit for an application.