U. S. helium plant produces 100 million cubic feet: Gas, Vol. XVI, No. 9
✍ Scribed by R.H.O.
- Book ID
- 104132389
- Publisher
- Elsevier Science
- Year
- 1940
- Tongue
- English
- Weight
- 118 KB
- Volume
- 230
- Category
- Article
- ISSN
- 0016-0032
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✦ Synopsis
The Destructive Distillation of Maple Wood.--DONALD F. OTHMER and W. FRED SCHURIG of the Polytechnic Institute of Brooklyn presented a paper before the Detroit meeting of the American Chemical Society which stated that few reports are available describing experiments showing the effect of different variables on the carbonization of hard wood; and the last ones, with incomplete data, were made some 20 to 25 years ago. There are numerous variables involved in the unit process of destructive distillation as applied to hard woods; and some of these have been studied in their relation to the carbonization of maple cord wood sticks about 17 inches long. A series of runs were made to study the effect of time and temperature (taken at a half-dozen different points throughout the heating assembly), the moisture content of the wood, the age of the wood after cutting, the season of the year when the wood was cut, etc. The retort used was a vertical cylinder with the wood standing on ends. The products obtained were determined: the charcoal as the residue; the acetic, methanol, tar amount and composition of the wood gas at different times during the runs. Much larger amounts of acetic acid and methanol and lower amounts of charcoal were obtained in this retort and with the method of firing used than are obtained in industrial practice indicating that the volatile products may be increased at the expense of the charcoal in a properly designed plant and properly conducted operation. Runs were so made (including one on cotton cellulose) that some conclusions as to the nature of the decomposition and the parts of the wood the various products came from could be drawn. R. H. O.