Charcoal plant construction

The bioassay chambers were constructed of 6.4 mm plexiglass, 0.60 X 0.60 X 2.4 meters in dimension. The air inlet end was fitted with a charcoal filter through which air was drawn through the chamber by a variable velocity fan. The formulations to be tested were applied to growing cotton plants and allowed to age for the desired length of time. The treated plants were positioned at the air inlet end of the ch lmber and the airflow adjusted to approximately 3-5 km/hr. Male pink bollworm moths were positioned at the opposite end of the chamber, downwind of the pheromone source. Moth mortality was recorded versus an untreated control plant to compensate for any natural mortality. Table I summarizes the data from the test designed to demonstrate the attracticide effect. As can be seen, significant mortality is obtained only in the case where pheromone and toxicant are both present. 

Mercerizing Liquors.—Quantities of liquor will vary considerably with the process of washing used in each plant, and a reasonable average will give 2 gal. of 6°Twaddell waste liquor for each pound of cotton mercerized. These liquors are usually concentrated to from 70 to 80 Twaddell in a triple- or quadruple-effect evaporator of the horizontal-tube or rapid-circulation type. The capacity is from 2H to 3H gal. per square foot, with a steam pressure of from 10 to 15 lb. Special construction and entrainment separators are necessary to prevent losses by foaming. The last effect will frequently show incrustations of sodium carbonate which can be dissolved in hot water or weak hquor. Evaporators are usually built of steel with steel or charcoal-iron tubes. 

This paper discusses the preliminary engineering data leading to the construction of a vacuum pyrolysis pilot plant for the conversion of wood into oils, chemicals and charcoal. 

Construction of charcoal and whetlerite plants by Barnebey-Cheney Brothers Engineering Co. at Columbus, Ohio, and Carlisle Lumber Co. at Onalaska, Wash. 

Construction was begun on the first of these plants, a charcoal-whetler-ite plant at Zanesville, Ohio, in December 1940 on the property of the Barnebey-Cheney Engineering Co. ° The whetlerite portion of this plant... 

Interv, Hist Off with Sebastian W. Kessler, 11 Dec 57. Mr. Kessler was CWS engineer on construction of charcoal-whetlerite plants and he supervised their initial operation. 

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