U. S. Bureau of Mines Experimental Plant

Abstract

A description is given o£ an experimental plant £or the continuous hydrogenation of about 100 pounds of coal per 24 hours. The major difficulties experienced in operation o£ the plant and the solutions adopted are discussed.Typical results on the liquid phase hydrogenation o£ Pittsburgh seam coal are given. THE U, S. Bureau of Mines experimental coal-hydrogenation. plant was built to obtain information regarding the Literature Cited

Hydrogenation of High-Volatile Bituminous Coals

“…The hydrogenation assays were conducted in the experimental plant erected by the Bureau of Mines at Pittsburgh. This plant has been described in previous publications (5,6,8,9,10). The assay procedure comprises pumping a mixture of about equal parts of powdered coal and a heavy oil with hydrogen under 200 to 300 atmospheres pressure into a vertical alloy-steel tube, 3 inches i. d. and 8 feet long, heated to 430-450°C.…”

Hydrogenation and Petrography of Subbituminous Coals and Liginites

“…The eleventh column of Table I shows that there is little, if any, trend with rank of coal observable in the percentage of hydrogen used, based upon the moistureand ash-free coal. However, the hydrogen used per ton of oil produced (column 11 divided by column 7, Table I) increases from about 12 per cent for bituminous coals to about 15 per cent for lignites. This increase is much smaller than one might have predicted upon, considering the oxygen contents (column 10, Table I) of the coals.…”

“…The petrographic and chemical analyses of the Puritan mine coal are given in Table II, along with those for the other subbituminous coals and lignites. Since the halogens are active hydrogenation catalysts (11), the halogen content of the coals of Table II was determined. It was found to be 0.01 per cent or less for all of them.…”

Liquid-Phase Hydrogenation of Pittsburgh Seam Coal

“…A DESCRIPTION of the Bureau of Mines experimental coal hydrogenation plant was published in 1937 (5). Since that time a study has been made of the effect of varying temperature, time of contact, and agitation (hydrogen recirculation rate) on the hydrogenation of Pittsburgh seam coal from the Bureau of Mines Experimental mine at Bruceton, Penna.…”

“…Since that time a study has been made of the effect of varying temperature, time of contact, and agitation (hydrogen recirculation rate) on the hydrogenation of Pittsburgh seam coal from the Bureau of Mines Experimental mine at Bruceton, Penna. Some changes have been made in the plant since the last published description (5). The first section of the present paper discusses these modifications.…”