. American engineer and railroad journal . r is at the top of the producer,where it uses the waste heal from the escaping gas and whereai the same time the water keeps the top from getting too the larger sizes the vaporizer is separate and connected tothe producer by piping. From the vaporizer, the hot gas flowsthrough the scrubber, which is merely a cylindrical-shaped tankfilled with eoke, over which a spray of water is constantlysprinkled. The large contact surface of the eoke effectuallycleanses the gas of dust and impurities carried over from theproducer, and also acts to eool the g
. American engineer and railroad journal . r is at the top of the producer,where it uses the waste heal from the escaping gas and whereai the same time the water keeps the top from getting too the larger sizes the vaporizer is separate and connected tothe producer by piping. From the vaporizer, the hot gas flowsthrough the scrubber, which is merely a cylindrical-shaped tankfilled with eoke, over which a spray of water is constantlysprinkled. The large contact surface of the eoke effectuallycleanses the gas of dust and impurities carried over from theproducer, and also acts to eool the gas, which is essential inorder to prepare it for use in the engine. With certain fuels, especially when much tar is encountered,it is also necessary to add a sawdust purifier in order to ab-stract the last traces of tar from the gas. While not absolutelyessential, it is always advisable to use a gas tank between and the engine, in which a certain amount of gas isstored ready for use in the engine. This is especially desirable. FIG. 5.—SECTIONAL VIEW OF FAIRBANKS-MORSE GAS ENGINE. where the loads are variable. In the care of the producer, theprincipal attention needed is to poke the fire every few hours, thelength of the interval depending on the quality of the coal, inorder to break up and remove clinkers, which would otherwiseinterfere with the making of sufficient gas. Poke holes are pro-vided so that every part of the fire can be reached conveniently. Fuels. Anthracite in buckwheat or pea sizes, lignite, coke, andcharcoal are the fuels commonly used. In many sections thesmall sizes of anthracite can be bought cheaply in car lots. Forexample, in Chicago the car-load price of buckwheat anthra-cite is usually about $ per ton. In some of the States westof Chicago the price varies from $ to $ per ton. At somepoints in southern Canada these small sizes of Pennsylvania an-thracite can be bought for from $3,00 to $ per ton. In someof the Eastern States
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Keywords: ., bookcentury1800, bookdecade1890, booksubjectrailroadengineering
