The Americana; a universal reference library, comprising the arts and sciences, literature, history, biography, geography, commerce, etc., of the world . sses up through the filling against ashower of water dripping over the filling. Theintimate contact of the gas and water resultsin the absorption of the ammonia from the gasand also the removal of a certain part of thesulphur compounds and carbonic acid present inthe gas, in combination with the ammonia — assulphide of ammonia and carbonate of scrubber will also remove any traces of thetar that may have escaped from the condensing
The Americana; a universal reference library, comprising the arts and sciences, literature, history, biography, geography, commerce, etc., of the world . sses up through the filling against ashower of water dripping over the filling. Theintimate contact of the gas and water resultsin the absorption of the ammonia from the gasand also the removal of a certain part of thesulphur compounds and carbonic acid present inthe gas, in combination with the ammonia — assulphide of ammonia and carbonate of scrubber will also remove any traces of thetar that may have escaped from the condensingapparatus. There are several forms of scrubbers. Theabove described is the simplest, and except thatin some of them the scrubbing material is me-chanically moved, so as to come alternately incontact with the water and the gas, the principleof all is substantially the same. The gas passes from the scrubbers into thepurifiers. These are rectangular boxes that areordinarily built from 3 to 8 feet deep, and of ahorizontal section depending upon the amountof gas that it is desired to purify in them. Theyare ordinarily built in sets of four or six, so. XlL r^^^ ^^^-^^^ ^ Fig. 6. gas inlet at the bottom of the B is the gasoutlet. C are the trays upon which the purifyingmaterial D, either lime or iron sponge is is the lid which is made gas-tight by the in-sertion of the lip G on its edges into the water-seal H, bolted to and encircling the Whenthe lid is on the box the lip G, being in water,will prevent the flow of gas from the box intothe atmosphere. When the purifying capacity ofthe material in the has become exhausted,which is determined by appropriate tests, thegas is shut off from that box, the lid is raised,and the material is removed — to be carted away,if it is lime, or to be spread upon a brick orconcrete floor, for re-oxidizing, if it is ironsponge.
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Keywords: ., bookcentury1900, bookdecade1900, booksubjectencyclo, bookyear1908
