GB681609A - Improvements in methods of cleaning gases - Google Patents

Abstract

681,609. Washing gases. BRITISH IRON & STEEL RESEARCH ASSOCIATION. Oct. 26,1950 [Nov. 3, 1949], No. 28172/49. Class 55 (ii) In the removal of dust particles from a stream of gas, a liquid spray is projected across the gas stream, the spray being composed of drops of the same order of size as the particles to be removed and having a velocity which is high relatively to the velocity of the gas stream. As shown, the spray is produced by revolving discs 11 mounted on a shaft 12 driven by a steam impulse turbine 14, a governor 15 for the turbine being mounted on the other end of the shaft. The turbine and governor are supported from the casing 10 by radial tubular struts 16 which are used also for the supply and exhaust of steam and for the supply of water and lubricant. The turbine and governor are covered by fairings 9 to avoid turbulence in the gas stream. A plate 18 gives access, to the spray producer when required. Water from one of the struts 16 is fed through a distributer 19 to the discs 11, the water being led through holes in the spacing collars to emerge on the surfaces of the discs. The discs are rotated at sufficient speed, e.g. 5,000 r.p.m., to ensure that with, say, a 6 inch wide passage between the edges of the discs and a 28 inch diameter casing, the drops hit the casing at about one-fifth of their initial velocity. The water, with collected dust is removed through a drain hole 20, but some of the dust-water particles are entrained in the gas and are removed in a separator consisting of spaced parallel sharply corrugated sheets, the gas flowing transversely to the corrugations. Specifications 22282/02, [Class 55], 17696/10, 23864/11, [both in Class 55 (ii)], and 583,196 are referred to.