US694621A - Distilling oil. - Google Patents

Description

, Pafefed Mar. 4, |902.

No. 694,62I.

J. A. DUBBS.

DISTILLING OIL.

(Application md Feb. 2s, 190x.;

(llo Model.)

WITNESSES:

vIt

UNITED 'STATES PATENT OFFICE.

JESSE A. DUBBS, OF PITTSBURG, PENNSYLVANIA.

DISTILLING OIL.

SPECIFICATION forming part of .Letters Patent No. 694,621, dated March 4, 1902.

Application sied February 28,

.To all whom it may concern:

Be it known that I, JESSE A. DUBBS, a citizen of the United States, residing at Pittsburg, in the county of Allegheny and State of Pennsylvania, have invented ordiscovered certain new and useful Improvements in Distilling Oil, of which improvements-the following is a specification.

In Letters Patent No. 646,639, granted to me April 3, 1900,-I have described and claimed a method of distilling oil consisting, generally stated, in effecting the vaporization by the conjoint action of heat and air forced-through the oil. Experience has shown that the distillate thus produced is defective vfor illuminating purposes by reason of the smoke and unpleasantodor produced in burning the distillate. l

The object of the present invention is to provide for such a molecular change as will produce an oil which will be smokeless and odorless in combustion.

The invention is hereinafter more fully del scribed and claimed.

In the accompanying drawings, forming a part of this specification, Figure 1 is a sectional elevation of a stillsuitable for the prac-A tice of my invention, and Fig. 2 is a similar view of a still adapted for the practice of va vmodification of the method. Y l

In the practice of my invention the oil is charged into the still l and heated in the usual or any suitable manner lo the temperature usual in distilling oils. Following the instructions set forth in Letters Patent No. 646,639 air is introduced through the pipes 3 and forced through the heated oilin regulated quantities. As before stated, the distillate thus produced is not satisfactory for illuminating purpose, as in combustion considerable smoke andan unpleasant odor are produced. It has been attempted to produce the molecular change necessary for the production of a distillate which in combustion will ybe free fromsmoke and odoi by forcing air Serial No. 49,268. (No specimens.)

vaporous or liquid form, be subjected to the direct action of air that a further molecular change will be effected. This second distillation may be effected in several ways-as, for example, the liquid distillate may be placed in a still similar to the still l and a second distillation effected in the same manner as the first vthat is to say, the distillate is heated in the usual or anysuitable manner toa temperature to effect avaporization of the oil, and air, preferably heated, is introduced through the pipe 3 and forced'through the oil. The amount of air injected is controlled by the quantity lof distillate escaping from the condenser. `By determining thevolume of gas at the temperature in the still necessary Ato produce a cubic foot of distillate the rate of iow of the distillate from the condenser will indicate the rate of evaporation in the still, as the gases flow freely from the still through the condenser. The rate of generation of gas being determined, the operator so adjusts the flow of air that the volume of the latter forced into the still during a given time will be about four times the volu me of gas generated during the same period. In otherwvords, the operator regulates the infiow of air in accordance with the flow of distillate from the condenser..

Inlieuof condensing the vapors generated 'vin 'the` first or original distillation and then subjecting the distillate to a second treatment by air, air `may be forced through the pipe 6 into the vapors contained in the upper portion of the still 1f. The air thus introduced into the vapors will. effect such a molecular change in the hydrocarbons that the oil will burnwith a smokeless and odorless flame. In forcing air into the vapors in the upper part of the still 1 care Ashould be taken that the proportions of air and vapor above .stated should be maintained. D

With some oils it may be necessary to subject them to three or more distillations-that is to say, the distillate from the crude is subj ected to a distillation, as described, and the second distillate is subjected to a similar treatment. These successive distillations may be continued unt-il the desired molecular change has been produced, which is determined by practical tests, such as burning the oil in a lamp. The successive treat-ments of the dis- IOO tillate may be effected either before or after the distillate has been condensed, as hereinbefore stated.

I claim herein as my invention- 1. As an improvement in the artof treating oils the method herein described, which consists in forcing air through the oil while the latter is maintained at a vaporizing temperature and then subjecting the distillate while heated to the action of air, substantially as set forth.

2. As an improvement in the art of treating oils the method herein described which consists in forcing air through the oil While the latter is maintained at a vaporizing temperature condensing the vapors, heating the distillate to a vaporizing temperature and forc- JESSE A. DUBBS.

Witnesses:

F. E. GAITHER, DARWIN S. WoLCoT'r.

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