GB165419A - Improvements in fuel - Google Patents

Abstract

In a mobile and atomizable fuel which consists of peptizable solid carbonaceous substance suspended in liquid hydrocarbon or fuel oil and which is preferably heavier than water, stability of the suspension is promoted by the addition of 1-10 per cent of a peptizer, such as creosote, naphthalene, anthracene-free oil, or other coal distillates, or tar derived from solvent naphtha. The carbonaceous substance is pulverized or otherwise reduced until about and preferably more than 95 per cent passes through a screen of 100 mesh to the linear inch and 85 per cent through a screen of 200 mesh, and is then mixed with the liquid hydrocarbon by passage through a ball, tube, or paint mill, or by heating to 65-95 DEG C. with or without agitation, or by a combination of these methods; or the solid may be reduced in presence of the liquid. Suitable carbonaceous substances specified are semi-anthracite, bituminous and semi-bituminous coals, and lignites. Suitable liquids mentioned are fuel oils, pressure-still oil or tar, coal tar from coke ovens or gas works, solutions of pitch, and molasses. The liquid should preferably have a viscosity of about 20 DEG Engler at 20 DEG C. and 10 DEG at 30 DEG C. Liquid products may be obtained containing up to 45 per cent of carbonaceous particles, and atomizable pastes containing up to 75 per cent solid particles. Other measures promoting stability may be used in addition, as described in Specification 149,306. Specification 17729/13 also is referred to.