Transactions of the American Society of Heating and Ventilating Engineers Volume 25

Transactions of the American Society of Heating and Ventilating Engineers Volume 25

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This historic book may have numerous typos and missing text. Purchasers can usually download a free scanned copy of the original book (without typos) from the publisher. Not indexed. Not illustrated. 1920 edition. Excerpt: ... the time of delivery at the house it gets broken up; so by a little mixing I get along very well with it, and by learning how to handle it a great deal of satisfaction can be obtained. A great many people are having trouble with gashouse coke. That may be due to a difference in the quality of gashouse coke as made today or to people not studying the conditions under which they had to fire it. Mr. Easter: That a ton of coke is equal to a ton of anthracite coal in heat units may be qualified somewhat due to the variable character of coals used for coke making. Coke shows a greater range of content other than heat units than the average anthracite coal. The commercial process of making coke, whether in beehive or retort ovens, will not change the character of the coke from that of the coal from which it is made to any great extent. The principal forms of non-combustibles in coking coal consist of bone coal and slate, ash ranging from 10 to 20 per cent, much of which cannot be separated before coking and becomes impregnated within the coke structure, while the ash content in the average anthracite coal is not over one-half that of the best coke, hence the greater loss of fixed carbon in the ton of coke. The slate and bone in anthracite coal is more accessible for separation from the coal in the preparation for shipment than is the case with coke. It. seems a mystery just what the ingredient is which causes the carbon in a certain grade of coal to knit together and form a hard metallic cake in the coking process, while coke made from other coal of practically the same analysis has little or no crushing strength. The structure of coke is variable, some is so light in weight that there is considerable stack loss as compared with anthracite...show more

Product details

  • Paperback | 162 pages
  • 189 x 246 x 9mm | 299g
  • Rarebooksclub.com
  • United States
  • English
  • black & white illustrations
  • 1236976436
  • 9781236976437