GB815100A - Improvements in or relating to apparatus for effecting glow combustion at high temperature - Google Patents

Abstract

815,100. Surface combustion apparatus; catalytic and electric igniters. WAGNER, H. Oct. 26, 1955 [Nov. 12, 1954; July 14, 1955; Sept. 23, 1955], No. 30637/55. Classes 75(1) and 75(3) A glow burner comprises a mixing chamber having an injector system similar to that of a Bunsen burner and fine quartz wool fibres or threads disposed as a quartz wool mat supported by a casing in the front of a stream of a mixture of air and combustible gas or vapour. The burner comprises a mixing chamber d provided with an air and gas or vapour injector a, b, c and two frame members, e, f which hold in position two flat protective gauze wires g, h and two quartz wool mats l, k the inner faces F of which are in contact Small quantities of catalytic materials may be introduced into the quartz wool mats or alternatively the quartz wool may form a carrier for the catalyst. The catalysts may be of platinum, palladium or rhodium or substances containing non-precious metals such as cobalt. The catalyst may also be applied to carriers such as kieselguhr silicia acid gel, asbestos clay and other finely distributed oxides and the carriers may be supported by the quartz wool mats. Gauze wire m may be provided at the inner face of the mat k to prevent flashback. A heater P may be placed between the faces F of the mats l, k and catalysts in the form of granules S may be placed within the spaces between the heater wires. The quartz wool filaments may have a diameter of from 0.5 microns to 150 microns. The inner wall of the chamber d is lined with a heat reflecting layer of creased aluminium foil.