OCR Text |
Show Coke's Distinct Value in the Home Furnace Soft colli ciiii never he huriieil tn house-heuilng funnier with Mich com pleteness l comliustloii us coke. When Koft coul Is used most of the volume miiiter distilled from the coul escniH-g from the furnace unhurned In the form of Boot, tar. uml combustible gases. 1'iirt of I he soot unit tur Is deposited de-posited on ti e hem lug surfaces of the stove or furnace and In the II lien nml purl csnipos through the chlimiey u visible smoke. The Inr and Soot ilo not hum In the furnace because the furnace lit usually too small and the temperature too low for miilntuinlna their combustion. The residue left after the Inr Hiid Hoot have tieen driven from I he coul Is In the form ot coke. II hums slowly and almost com pli lely In the ainull furnace mid the I, cut which gets Into ll. e house Is most ly I he henl Unit lias heei) generated hy burning this residue. Therefore, when soft coal Is hurncd In the onli nary hoiise-heulliiR fin niice the coal Is first reduced to coke hy driving olTthe volullle uuitler. most of which escapes mihiirned; then the coke hums In the furnace .and I. eats the house, hrlvlng olf the volullle timiter unhurried not only causes direct loss of heal Inn causes a great deal of dirt in the furnace, fur-nace, Hues, holler room, and also In the outside atmosphere. Since the volatile vola-tile tmilter In soft coal Is of negative value so far as healing the house Is concerned, It Is hotter to use a fuel that does not coniuln volatile uuitler Such a fuel Is coke. Ilurenu of Mines |