. Bulletin of the Department of Agriculture. Agriculture; Agriculture. PRODUCING SODA PULP FROM ASPEN". 11 to the charging temperature and run into the digester, and the cook- ing operation was begun by permitting live steam to enter at the bottom. During the cooking, observations were made at 15-minute intervals of (1) digester temperature, (2) digester pressure, (.3) steam pressure at digester inlet, and (4) room temperature. The volume of liquor. in the digester was also observed, but at hourly intervals. These observations were recorded, and a graphic "log of cook" was
. Bulletin of the Department of Agriculture. Agriculture; Agriculture. PRODUCING SODA PULP FROM ASPEN". 11 to the charging temperature and run into the digester, and the cook- ing operation was begun by permitting live steam to enter at the bottom. During the cooking, observations were made at 15-minute intervals of (1) digester temperature, (2) digester pressure, (.3) steam pressure at digester inlet, and (4) room temperature. The volume of liquor. in the digester was also observed, but at hourly intervals. These observations were recorded, and a graphic "log of cook" was made at the same time, an example of which is shown in figure 3. If at any time the digester temperatures and pressures as observed on the thermometer and pressure gauge did not agree when compared by means of pressure-temperature tables for saturated steam, the excess of pressure was relieved; such a condition occurred as a rule only dur-. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original United States. Dept. of Agriculture. [Washington, D. C. ?] : The Dept. : Supt. of Docs. , G. P. O.
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