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INTERIOR OF A GASOLINE PLANT EQUIPPED WITH SIX 50-HORSEPOWER DIRECT-CONNECTED COMPRESSORS.

BULLETIN 88

PLATE VI

TABLE 5.—Results of laboratory tests of samples of gas from different gasoline plants.

PLANT 1,4 NEAR FOLLANSBEE, W. Va.

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Plant numbers arbitrarily assigned for convenience of reference. Analysis calculated "air free" to show composition of crude gas. The crude gas was obtained after the gas had been first compressed but not cooled.

Actual composition of the gas delivered to the compressor.

57858°-Bull. 88-15-5

TABLE 5.—Results of laboratory tests of samples of gas from different gasoline plants—

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TABLE 5.-Results of laboratory tests of samples of gas from different gasoline plants

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TABLE 5.-Results of laboratory tests of samples of gas from different gasoline plants

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PLANT 10, W. Va.

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SIGNIFICANCE OF RESULTS TABULATED.

It is well to again call attention to the fact that the percentages of paraffin hydrocarbons shown in the preceding results of analyses are only approximate. Only the two predominating paraffin hydrocarbons are shown. For instance, in plant 2 the hydrocarbon content of the crude gas is given as CH,, 2.7 per cent, and C2H., 96.1 per cent. Propane, butane, and vapors of the liquid hydrocarbons must be present, else gasoline could not be condensed from the gas. The total hydrocarbon content is correct or nearly correct, however, as is the specific gravity and heating value. The oil absorption shows only the relative solubilities of the different gases under a certain condition. One can determine approximately the relative changes that take place in the plant operation by comparing the different analytical results. For instance, the figures for plant 6, near Riverside, W. Va., indicate that the gas underwent only a small change after compression in the first stage to a pressure of a few ounces. The specific gravity changed only from 1.27 to 1.26, the heating value dropped inapprecia

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