Composition of Texas Petroleum.

Mabery, Charles F.

doi:10.1021/ja02030a010

Cited by 10 publications

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“…Both the tar and the extract were subjected to detailed separation and many individual chemical compounds were identified. In Table II is given a partial list of hydrocarbons isolated together with compounds of the same series identified by Mabery (11) in crude petroleums. .In many cases the structure of the hydrocarbons was identified, and the hydrocarbons containing more than the data in Table I.…”

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Thermal Decomposition of the “Coal Hydrocarbon”

Lowry¹

1934

Ind. Eng. Chem.

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necessary, may be accomplished by air-blowing after the hydrocarbon atmosphere has been replaced by an inert one. Refining of BenzeneBenzene derived from the pyrolysis of natural gas appears to differ from coal-tar benzene only in the relative proportions of its constituents, and the same general methods of refining are applicable in both cases. Where the product of pyrolysis is intended as a blending stock, the following are some of the methods of treatment available: inhibitors, sulfuric acid treatment, hydrogenation, fractionation and the separate treatment of the fraction, and vapor-phase refining.Bound up with this question of refining is also the maximum permissible sulfur content of the benzene. The normal product using metal tubes contained 0.5 per cent sulfur, and this, for blending purposes, was considered satisfactory.Pyrolysis benzene is a very suitable material for the testing of inhibitors, and considerable success can be expected by this method.Sulfuric acid refining has proved satisfactory, in that the product, after treatment, is stable and of good quality, but this method is wasteful of what may be useful unsaturated material. Details need not be given as these follow the normal refining lines.Hydrogenation may be applied to the benzene as a whole, and this has been tried with some success, but attention was concentrated on the hydrogenation of such highly unsaturated fractions of the benzene as the styrene fraction. The purpose of this was to produce extremely useful antiknock materials like ethyl benzene and so avoid loss of unsaturated hydrocarbons in refining. The more saturated parts of the benzene might then be refined using sulfuric acid.Vapor-phase refining methods, using such substances as zinc chloride, did not prove to be highly successful in the case of pyrolysis benzene. Influence of Pressure on Pyrolysis of HydrocarbonsLarge-Scale Pyrolysis of Natural Gas. On the semitechnical scale, tests were carried out using metal tubes in the furnace section at a pressure of 30 pounds per square inch gage. This, unfortunately, was a limiting pressure owing to the construction of the plant. The heating system consisted of 12 X 2 inch i. d. tubes in series, of which the first eight were ordinary 2-inch steel tubes and corresponding return bends, while the four hottest tubes were of H. R. 4. steel with return bends of the same material. A lagged expansion box was used.Operation at 30 pounds per square inch was compared with operation at 6 pounds per square inch using stripped gas of specific gravity 1.00 to 1.01. The throughput was increased from 1800 to 2800 cubic feet per hour at the higher pressure.The benzene production was little changed and was of the order of 1.1 gallon per 1000 cubic feet of nitrogen-and hydrogen sulfide-free gas, Under 30 pounds per square inch pressure the plant was easier to run than at the lower pressure, heat transfer was improved, throughput increased, and yield remained the same. AcknowledgmentAcknowledgment is due the Angio-Persian Oil Company, Ltd., for making th...

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confidence: 99%

Thermal Decomposition of the “Coal Hydrocarbon”

Lowry¹

1934

Ind. Eng. Chem.

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“…Attractive in personality, cultured in manner, broadened by her travels, sympathetic in nature, she contributed much to her profession. In a memorial lecture at the university after her death, Acting Chancellor Charles E. Bessey, a distinguished botanist and former colleague at the experiment station, said: "She was not only an eminent chemist, she was a great teacher, and more than that, she was the beloved advisor and counselor of students" (2).…”

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“…Charles F. Mabery (1850-1927, B.S., D.Sc. 1876, 1881 Harvard, with J. P. Cooke) developed the Harvard Summer School and was a faculty member at Case Institute of Technology 1883-1911, where he built up the chemistry department and published important studies on petroleum chemistry 2. In her charming account of visits to leading European universities in 1887, Helen Michael (3) found the University of Zurich ''crowded" with women students.…”

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confidence: 99%