USRE6568E - Improvement in making illuminating-gas from petroleum - Google Patents

Description

W. 6. WHEN 8|. W. BARKER. Ma k-ing llluminating- Gas from 'Petroleum.

'Reissued July 27,1875.

Wi'fwses. [7a veniori,

' fires in the usual way, so as to bring their to the admission into them of the vapor 0t UNITED STATES PATENT OFFICE,

, WILLIAM 0. WHEN AND WILLIAM BARKER, or BROOKLYN, s'srenons, BY

MESNE ASSIGNMENTS, TO CHARLES F. DEAN, OF NEW'YORK,N. Y.

IMPROVEMENT IN MAKING lLLUMlNA TlNG-GAS FROM-PETROLEUM.

Specification forming part of Letters Patent No. 56,843, dated July 31, 1866; reissue No. 5,873, dated May 12,1874; reissue No.6,568, dated July '27, 1875', application tiled June 21, 1875.

tain a charge of liquid hydrocarbon, which is desired to be worked oif'in one batch, and is to be filled or charged and closed up, except the pipe, as shown in the drawing, before the heat is applied to it. It is then to be heated with a heat which gradually increases.

A bedof porous material in the bottom of the still facilitates the operation but this is well known in distilling,' and is not claimed as'the invention of WREN and BARKER.

Theexhalation or vapor produced from the material by the action of the heat passes by a pipe, A, into the superheater or retort 2, and there, coming into contact with the redhot surfaces of the retort, it is converted into apermanent gas, so that when it passes out of the retort it is no longer condensable, as it would be when in a state of vapor, issuing out of the still;

Two or more retorts may be used, if one is not su'fficient, to convert the vapor from the still into gas and free it from moisture.

In the drawing, B'is a pipe leading the gas from the first to the second retort 3; andG, the pipe leading the gas out of the retorts, in the manner usual in gas-works, which .need not be described. V

It is apparent that the success of the oper ation of converting the vapor issuing out of the still into permanent gas will depend upon the relative supply of vapor, as compared with the extent of hot surfaces in the retorts. It is, therefore, necessary that the heat of the still should be independent of the heat of the retorts. y

The process invented by the said WREN and BARKER depends upon the natural fact that when a charge of liquid hydrocarbon is supplied to a still, and worked ofi in the form of vapor, the vapors of different densities follow each other in succession as the charge is evaporated to greater density, wherein this process ditlers from the older processes of making illuminating gas tromliquid hydrocarbon, in which the liquid is fed drop by-drop to the hot surfaces 'of an evapcrating apparatus, and each drop evaporated To all whom it may concern:

Be it known that VVILLIAM O. WREN and WILLIAM BARKER, both of the city of Brooklyn, in' the county of Kings and State of New York, did invent a newand improved mode of making and producing gas for illuminating purposes from the basis of crude petroleum and kindred material; and I do hereby declare that the following is a full and exact description thereof, reference being had to the accompanying drawings and to the letters of reference marked thereon.

The nature of the invention of said \VREN and BARKER consists in the production of illuminating-gas from crude petroleum or other kindred material by the process of vaporizing a body of liquid hydrocarbon, such as petroleum, naphtha, &c.,in a'still, and converting the vapor evolved from the still into illuminating-gas in a retort or retorts heated by a fire or fires independent of the heat which heats the still-that is to say, an intense heat is produced in and throughout one or more superheaters, such as are'marked 2 and 3' on the annexed diagram, the number used being governed ,by circumstances. These super-F heaters are, in fact, retorts, such as are well known in gas-making, and maybe of any convenient shape, and are to be heated up to the point necessary for the conversion of vapor into gas, and their effective heating-surface is increased by the use of screens or other obstructions, .in the manner well known before the invention of said WREN and BARKER; but these devices are not claimed as the invention of VREN and BARKER. In conducting the process these retorts are heated by temperature up to the converting-point, at which permanent gas is made preparatory petroleum or its kindred products from thestill.

Figure 1 is a vessel, which, in the process, performs the function of a still. In the draw ing it is shown spheric'al, but its shape is not material. It should be large enough to conby itself, giving outall its vapor practically at once, and leaving the non-volatile portions to aceumnlete in the-still.

What I claim'as the invention of WILLIAM G. WREN and WILLIAM BARKER is- The above-described process of producing illuminating-gas from petroleum or its kindred products, in which a charge of liquid hydrocarbon is gradually-heaped in a. still, and

the resultant vapors are then converted from their vaporous form into permanent gas in a retort or retorts heated by independent fires, substantially as described.

CHARLES F. DEAN. Witnesses:

JNO. R. LEFFERTS,

JOHN MOORONE.

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