Maintenance - Alternatives to Refractory Material

Alternatives to Refractory Material Points : Alternatives to Refractory Material, Tangent tube, Monowall or membrane wall Definition Alternatives to obstinate materials be two designs of water wall arrangements devoid of exposed refractory materials. The two types of arrangements are
Tangent tube
Monowall or membrane wall Tangent Tube In tangent tube preparations, small diameter tubes are strictly pitched together to type an arrangement backed by three layers, that is - refractory, insulation and boiler casing. The trouble with this arrangement is to, in case of tube crash the welded repairs turn into a bit difficult to carry out. But repairing is not convenient, the broken tube is to be plugged as of both the sides. while plugged, the tube should be covered by refractory material to protect the insulation layer after it. Monowall Membrane In monowall membrane, every one of the steel tubes are fixed together with the help of a steel strips to type a gas tight enclosure. however it forms a gas tight structure, it requires an insulation and cleaning on the outside. The advantage of a monowall membrane is that it eliminates the problems attached by refractory and expanded joints. In case a tube fails, plugging of tube wants to be done from together the sides without the use of any refractory material. The design is such that the fail tubes, if plugged would neither require any opportunity inspection nor will they create any useful problem.