. Preventive medicine and hygiene. disinfect-ing the holds of vessels the pipe is usually let down the hatchway untilit is near the bilge. The heavy gas collects at the bottom and graduallyascends, displacing the air, so that it is important to allow an opening GASEOUS DISINFECTANTS—FUMIGATION 1143 of some sort for the exit of the air near the top of the compartment thatis being disinfected. This opening should not he closed until the gasescapes freely. The KinyourirFrancis furnace consists of an iron pan upon whichthe sulphur is burned. Under this pan is a firebox with ashpit and nec-essary d
. Preventive medicine and hygiene. disinfect-ing the holds of vessels the pipe is usually let down the hatchway untilit is near the bilge. The heavy gas collects at the bottom and graduallyascends, displacing the air, so that it is important to allow an opening GASEOUS DISINFECTANTS—FUMIGATION 1143 of some sort for the exit of the air near the top of the compartment thatis being disinfected. This opening should not he closed until the gasescapes freely. The KinyourirFrancis furnace consists of an iron pan upon whichthe sulphur is burned. Under this pan is a firebox with ashpit and nec-essary drafts. The firebox is designed to hold a light fire of wood orshavings and is intended to heat the sulphur pan sufficiently to ignitethe sulphur when thrown upon it at the beginiiing of the operation. Thispart of the apparatus is unnecessary, as the sulphur may be ignitedmore simply by means of some alcohol, turpentine, or kerosene on waste,or a few live coals. When once lighted there is no trouble in keepingthe sulphur QOUBLK eULPHUi^ ipURNACe Fig. 168.—Section through Double Sulphur Furnace. The air enters at A, Fig. 168, through a valve arranged to regulatethe amount of flow. It then passes over the burning sulphur in thedirection shown by the course of the arrows to the fan. Fumes arecompelled to take a devious course around the baffle plates and angleirons, as shown in the drawing, in order to insure complete combustionand to arrest sparks. From B the fumes are sucked to the fan, whichis actuated by a steam engine or electric motor, and which forces thegas through the pipes to the place to be disinfected. Eunning the fan at too high a speed may cause overheating of thepipes or the carrying over of sparks of burning sulphur. The properamount of air should be carefully regulated so as to obtain completecombustion and the maximum amount of sulphur dioxid gas. The pipe conducting the fumes from the sulphur furnace to thecompartment to be disinfected gives a certa
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Keywords: ., bookauthorwh, bookcentury1900, bookdecade1910, booksubjecthygiene
